US Pat. No. 9,555,843

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body having a vehicle body frame; and
a weight that can be attached to the vehicle body frame;
wherein when the weight is attached to a length of the vehicle body frame, an upper end portion of the weight is disposed
in a same position as or upwardly of a lower end portion of the vehicle body frame, and at the same time in a same position
as or downwardly of an upper end portion of the vehicle body frame; and wherein:

the weight includes an inner space formed inside thereof, and a first communicating portion and a second communicating portion
which communicate the inner space with an outside of the weight; and

there is provided an extension member disposed to extend in the vehicle body front/rear direction via the weight, the extension
member being extended via the first communicating portion from the outside of the weight into the inner space and extended
via the second communicating portion from the inner space of the weight to the outside.

US Pat. No. 9,116,015

DISPLAY SYSTEM FOR WORK VEHICLE HAVING A DISPLAY SWITCHING COMMAND DEVICE FOR SWITCHING A DISPLAY IN A DISPLAY DEVICE

Kubota Corporation, Osak...

1. A display system for a work vehicle comprising:
a display device having an information display area;
a display control unit for controlling the display device for reading and displaying written and stored information;
a display switching command device which outputs a display switching command for switching a display in the display device;
a rotation sensor for detecting an output rotational speed of an engine; and
a key switch,
wherein the display control unit selects and sets, based on an output from the display switching command device, one or more
of an operating time display mode for displaying an operating time of an engine, an instantaneous fuel consumption display
mode for displaying an instantaneous fuel consumption, an average fuel consumption display mode for displaying an average
fuel consumption, and an amount of used fuel display mode for displaying an amount of used fuel, as a display mode for the
information display area,

wherein, when the display control unit is stopped by the key switch, a storing operation is performed to readably store a
total operating time of the engine, the operating time of the engine after a reset thereof, the average fuel consumption or
the average fuel consumption after a reset thereof, and the amount of used fuel or the amount of the fuel used after a reset
thereof, which have been computed until the output rotational speed falls below to a second predetermined rotational speed;
and

wherein, when the output rotational speed detected by the rotation sensor becomes greater than or equal to a first predetermined
rotational speed and then an engine stall is determined by detecting the output rotational speed fallen below the second predetermined
rotational speed, the storing operation is performed to readably store the total operating time of the engine, the operating
time of the engine after a reset thereof, the average fuel consumption or the average fuel consumption after a reset thereof,
and the amount of used fuel or the amount of the fuel used after a reset thereof, which have been computed until the output
rotational speed falls below the second predetermined rotational speed.

US Pat. No. 9,073,581

WORKING VEHICLE

Kubota Corporation, Osak...

1. A working vehicle comprising:
a traveling machine assembly;
a drive unit;
a bonnet configured to cover the drive unit; and
a cover provided below the bonnet and configured to be removably attached to the traveling machine assembly, including
a main body portion extending in a longitudinal direction of the traveling machine assembly,
a first male engagement portion provided at a front end portion of the main body portion,
a second male engagement portion provided at a rear end portion of the main body portion, and
a third male engagement portion provided at a lower end portion of the main body portion,wherein
the traveling machine assembly includes a first female engagement portion configured to be engaged with the first male engagement
portion, a second female engagement portion configured to be engaged with the second male engagement portion, and a third
female engagement portion configured to be engaged with the third male engagement portion,

the first male engagement portion and the first female engagement portion, when engaged together, permit the main body portion
to move in the longitudinal direction of the traveling machine assembly,

the second male engagement portion and the second female engagement portion, when engaged together, permit the main body portion
to move in the longitudinal direction of the traveling machine assembly,

a position where the third male engagement portion and the third female engagement portion are engaged together is within
a range in which the main body portion is permitted to move in the longitudinal direction of the traveling machine assembly,
when the first male engagement portion and the first female engagement portion are engaged together and the second male engagement
portion and the second female engagement portion are engaged together, and

the third male engagement portion and the third female engagement portion, when engaged together, limit movement of the main
body portion in the longitudinal direction of the traveling machine assembly.

US Pat. No. 9,352,673

ARMREST

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a driver seat;
an armrest arranged on a lateral side of the driver seat;
a height adjustment mechanism adjusting a height of the armrest; and
a flip-up mechanism swinging the armrest around a shaft center oriented in a lateral direction relative to the driver seat,
whereby the arm rest can flip up from a use position to a non-use position,

wherein a height position of the flip-up mechanism changes when a height position of the armrest changes via the height adjustment
mechanism, and

wherein the flip-up mechanism is located behind the height adjustment mechanism of the armrest.

US Pat. No. 9,328,673

ENGINE

KUBOTA Corporation, Osak...

1. An engine comprising,
an electronic throttle device including a throttle suction passage and a butterfly throttle valve having a laterally extending
throttle valve shaft,

a control unit for controlling the electronic throttle device,
a gaseous fuel supply unit,
a gaseous-fuel mixer is used as the gaseous fuel supply unit, including a venturi passage and a gaseous fuel inlet facing
the venturi passage,

a crankshaft defining a longitudinal direction in an extending direction thereof,
an engine cooling fan positioned on a front side of the engine in the longitudinal direction and a side opposite from the
front side being a rear side, and

a collector of an intake manifold extending in the longitudinal direction, wherein
the electronic throttle device is mounted rearwardly of the collector,
the gaseous-fuel mixer is mounted rearwardly of the electronic throttle device,
the venturi passage and the throttle suction passage are connected to each other in series in the longitudinal direction,
the gaseous fuel inlet is downwardly provided in a ceiling wall of the venturi passage,
a plurality of branch portions of the intake manifold are downwardly led out from a lower surface of the collector,
a front end wall of the collector projects forward of a front end wall of a front-most one of the branch portions, and
an inner surface of a front end lower corner of the collector, connecting the front end wall of the collector and the front
end wall of the front-most branch portion is curvedly shaped, a tangent of said curved shape gradually approaching horizontal
as the curved shape approaches the front end wall of the front-most branch portion from the front end wall of the collector.

US Pat. No. 9,316,142

SPARK IGNITION ENGINE

KUBOTA Corporation, Osak...

1. A spark ignition engine comprising:
a cylinder head cover attached to a top surface of a cylinder head;
a plug hole formed on the top surface of the cylinder head outside of the cylinder head cover;
a spark plug attached to an inner part of the plug hole;
an ignition coil case having a coil case peripheral wall;
an ignition coil integral type plug cap attached to the spark plug, the plug cap being formed by attaching a flexible cylinder
portion to an ignition coil case, with a tip part of the flexible cylinder portion being inserted into the plug hole and thus
fitted in the spark plug,

an intake manifold attached to the cylinder head,
a coil case attachment stay directly fixed to the intake manifold and including a board, a cylinder portion through hole formed
in the board, the flexible cylinder portion penetrating through the through hole, and an upper part of the board defining
a coil case attaching portion, and

a tongue piece protruding from the coil case peripheral wall, and mounted on the coil case attaching portion,
wherein the coil case peripheral wall abuts a coil case attaching portion edge portion such that the tongue piece is directly
attached to the coil case attaching portion with a coil case attaching screw tool in a state in which the ignition coil case
is prevented from rotating by the coil case attaching portion edge portion, thereby fixing the ignition coil case to the coil
case attachment stay.

US Pat. No. 9,327,582

WORKING MACHINE HAVING A CONDENSER AND PROTECTION COVER

KUBOTA CORPORATION, Osak...

1. A working machine including a driving seat, the working machine comprising:
a machine body;
a cabin provided on one side of the machine body, the cabin being configured to surround the driving seat;
a side cover provided on another side of the machine body opposite the one side;
a condenser unit provided between the cabin and the side cover to be adjacent to the cabin, the condenser unit including:
a condenser for an air conditioner, the condenser including a heat radiation surface oriented to face upward or downward;
and

a cooling fan configured to cool the condenser; and
a protection cover configured to cover an upper portion of the condenser unit, the protection cover including, on an upper
surface side of the protection cover, a wall part oriented to face a direction opposite to a direction of an operator's eye
from an inside of to the cabin, the wall part including an air intake vent configured to take cooling air into the protection
cover.

US Pat. No. 9,316,310

WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
an engine;
a travelling device;
a hydro static transmission (HST) pump composed of a tilted-plate type variable capacity pump driven by the engine;
an HST motor connected to the HST pump and a pair of gear-changing oil passages to form a closed circuit with the HST pump
and the pair of gear-changing oil passages, the HST motor being configured to be driven by a discharge oil from the HST pump
to drive the travelling device;

a pilot pump driven by the engine;
a travel operation device configured to control a tilted plate of the HST pump due to a pilot oil discharged by the pilot
pump;

a pressure control valve configured to control a travel primary side pressure, the travel primary side pressure being a pressure
of a primary side of the travel operation device;

an acceleration operating member for increasing and decreasing an engine speed of the engine to determine a target engine
speed; and

a control unit configured to control the pressure control valve, the control unit including:
a no-load characteristic line showing a relationship, under a condition where the engine is unloaded, between the travel primary
side pressure and a real engine speed that is an actual speed of the engine; and

a drop characteristic line provided for each of the target engine speeds determined by the acceleration operating member,
the drop characteristic line showing a relationship, under a condition where a predefined load or more is applied to the engine,
between the travel primary side pressure and the real engine speed, and the drop characteristic line including:

a first characteristic line portion used for decreasing the travel primary side pressure on a basis of a difference between
the real engine speed and the target engine speed, the target engine speed being a speed of the engine determined by the acceleration
operating member; and

a second characteristic line portion used for decreasing the travel primary side pressure on a basis of a difference between
the real engine speed and the target engine speed and at a rate smaller than a rate for decreasing the travel primary side
pressure in the first characteristic line portion,

wherein the control unit is configured to control the pressure control valve on a basis of the no-load characteristic line
when the engine is unloaded and to control the pressure control valve on a basis of the first characteristic line portion
and the second characteristic line portion when a predetermined load or more is applied to the engine.

US Pat. No. 9,285,028

SELF-PROPELLING WORK VEHICLE FOR FORWARD AND REVERSE DRIVE

KUBOTA CORPORATION, Osak...

1. A self-propelling work vehicle for forward and reverse drive comprising:
a vehicle body;
a variable propelling power supply section for supplying forward drive power and reverse drive power to propelling drive wheels;
a handle unit attached to the vehicle body for a first shift movement along a first direction with a neutral position and
a second shift movement from the neutral position along a second direction intersecting the first direction, wherein forward
drive speed or reverse drive speed is determined based on the first shift movement;

a guide unit including a maximum forward speed guide member for defining a shift movement end of the handle unit determining
a maximum forward speed of the forward drive speed, and a neutral guide member for guiding the second shift movement of the
handle unit from the neutral position defined as a starting position, wherein the guide unit is mounted to the vehicle body;

the maximum forward speed guide member comprising at least one opening for receiving at least one bolt so as to retain the
maximum forward speed guide member in a fixed position;

the maximum forward speed guide member and the neutral guide member being positionally adjustable independently of each other;
and

the maximum forward speed guide member, after being positionally adjusted, remaining fixed in place with respect to the vehicle
body via the bolt,

wherein at least one of:
the maximum forward speed guide member and the neutral guide member are slidable relative to one another when positionally
adjusted and are disposed one above another after being positionally adjusted; and/or

the maximum forward speed guide member and the neutral guide member are slidable relative to a common surface of the vehicle
body and overlie one another after being positionally adjusted.

US Pat. No. 9,180,850

WORKING VEHICLE

KUBOTA CORPORATION, Osak...

1. A working vehicle comprising:
a brake operating system transmitting a brake operating force of a brake operating device from an equalizer to brake mechanisms
of left and right wheels, the equalizer having a pair of arm portions transmitting the brake operating force to the left and
right brake mechanisms; and

a swingable balance member absorbing a difference between operating strokes of the left and right brake mechanisms,
the brake operating device comprising:
a single brake piston being actuated in a projecting direction by pressure of brake oil supplied by a depression operation
of a brake pedal; and

a brake operating member transmitting an operating force of a parking brake operating tool,
wherein
the brake operating member is connected to and applies a pulling force from one side of the balance member,
the brake piston is structured and arranged to transmit an actuating pushing force in the projecting direction to the balance
member, said pushing force being exerted from an opposite side of the balance member, and

movement of the brake operating member during application of the pulling force allowing relative linear movement between the
brake piston and the balance member.

US Pat. No. 9,058,051

GRIP

Kubota Corporation, Osak...

1. A grip comprising:
a grip body forming a gripping control portion of a device to be held with the operator's palm and fingers, the grip body
including:

a head portion;
a trunk portion extending from the head portion and having a diameter smaller than a diameter of the head portion;
a first surface extending along a length of a front side of the head portion and the trunk portion, the first surface comprising
a groove formed at an upper part thereof;

a second surface extending along a length of a first side of the head portion and the trunk portion;
a third surface extending along a length of a rear side of the head portion and the trunk portion;
an open surface extending along the length of a second side of the head portion and the trunk portion, the open surface positioned
between the first surface and the third surface; and

a switch mounted on the head portion of the grip body,
wherein a first rising portion is formed between the groove and the open surface and a second rising portion is formed between
the groove and the second surface, and

wherein at least a portion of the groove is substantially flushed and continuous with a pivotal-point surface of a control
element of the switch.

US Pat. No. 9,327,772

CABIN DEVICE OF WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A cabin arrangement of a working machine having a device frame and a working device disposed on the device frame, the cabin
arrangement comprising:
a cabin disposed on the device frame, the cabin being configured to surround an operating device and a driver's seat, the
cabin including:

a right support and a left support, the right support and the left support each having a lower part outer surface portion;
a pedestal provided on a lower portion of the device frame;
a hydraulic equipment disposed on the pedestal;
an installation part provided above a front part of the pedestal;
an attachment body provided on a front lower part of the cabin, the attachment body being disposed on the installation part,
the attachment body being coupled at least to a lower part of the right support at a right end portion of the attachment body
or to a lower part of the left support at a left end portion of the attachment body;

a front cover provided between the front part of the pedestal and the front lower part of the cabin, the front cover being
configured to cover a front outside of the hydraulic equipment;

a front glass provided on a front lower part of the cabin; and
a front plate disposed above the front cover and fixed to the attachment body at an intermediate portion on the front plate,
the intermediate portion being intermediate between ends of the front plate in a vertical direction, the front plate including:

a first plate provided between the front glass and the front cover; an upper surface part serving as a second plate, the upper
surface part extending from an upper part of the first plate toward an inside of the cabin; and

a standing edge part serving as a third plate, the standing edge part standing upward from an end of the upper surface part,
the front plate supporting a lower edge of the front glass on the upper surface part in front of the standing edge part and
covering front of the installation part of the pedestal,

wherein
the lower part outer surface portions of the right support and the left support are extended downward lower than the attachment
body and are adjacent to a lower part of the front plate,

the attachment body includes:
a band plate provided extending between the right support and the left support and fixed to the intermediate portion on the
front plate; and

a base plate overlapped on the band plate at an intermediate portion on the band plate, the intermediate portion being intermediate
between ends of the band plate in a longitudinal direction, and

the base plate is attached to the installation part together with the band plate.

US Pat. No. 9,328,757

HYDRAULIC SYSTEM FOR WORK MACHINE

KUBOTA CORPORATION, Osak...

1. A hydraulic system for a work machine, comprising:
a hydraulic actuator;
a pilot operated directional control valve configured to control the hydraulic actuator;
a remote control valve configured to operate the pilot operated directional control valve in a pilot operation;
a tank;
a pilot pump configured to discharge oil, the oil being sucked from the tank;
a discharging circuit configured to supply the oil, the oil being discharged from the pilot pump;
a pilot pump oil passage configured to supply the oil to the remote control valve, the oil being supplied from the discharge
circuit;

an unloading valve configured to include a supply position and an unloading position and to be switched between the supply
position and the unloading position, the supply position allowing the discharging circuit to be communicatively connected
to a starting end of the pilot pump oil passage, the unloading position blocking the communicative connection between the
between the discharging circuit and the starting end of the pilot pump oil passage and allowing the starting end of the pilot
pump oil passage to be communicatively connected to the tank; and

a warm-up circuit configured to supply the oil of the discharging circuit to a terminal of the pilot pump oil passage, the
warm-up circuit including a connecting oil passage configured to connect the discharging circuit to the terminal of the pilot
pump oil passage.

US Pat. No. 9,283,951

SPEED CHANGE SYSTEM FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
right and left rear wheels;
a continuously variable transmission device operable to change speed of traveling power of the vehicle steplessly;
right and left brake pedals, each of the brake pedals being operable to be pressed across a braking canceling region, a braking
speed change region defined continuous with the braking canceling region, and a braking stop region defined continuous with
the braking change speed region;

a right brake braking the right rear wheel with a braking force in accordance with a pressing operation amount the right brake
pedal;

a left brake braking the left rear wheel with a braking force in accordance with a pressing operation amount the left brake
pedal;

a pedal sensor for detecting a dual pressing operation position of the right and left brake pedals; and
a vehicle speed control unit, wherein when the dual pressing operation position of the right and left brake pedals is within
the braking change speed region, the vehicle speed control unit controls the continuously variable transmission device toward
a decelerating side thereof, in accordance with a dual pressing operation amount of the right and left brake pedals within
the braking change speed region.

US Pat. No. 9,242,681

CABIN SYSTEM

Kubota Corporation, Osak...

1. A cabin system to be mounted on a fore/aft elongated vehicle body, the cabin system comprising:
a pair of right/left front support pillars;
a pair of right/left rear support pillars;
a front upper beam joining upper portions of the pair of right/left front support pillars, the front upper beam being an angular
pipe having an upper face, a bottom face, a front side face and a rear side face, each of the upper face and the bottom face
being inclined forward and upward, wherein the front upper beam is curved in form of an arch such that a longitudinal center
portion of the front upper beam is positioned forwardly of opposed ends of the front upper beam;

a rear upper beam joining upper portions of the pair of right/left rear support pillars; and
a driver's seat provided within an inner space defined by the pair of right/left front support pillars, the pair of right/left
rear support pillars, the front upper beam and the rear upper beam.

US Pat. No. 9,194,475

WORK VEHICLE

Kubota Corporation, Osak...

1. A vehicle speed control arrangement for a work vehicle, comprising:
speed change operating means for speed-changing a stepless speed change device to change an output from the stepless speed
change device;

a brake device for braking a wheel with a braking force according to an operational position of an operational pedal which
is automatically returned to a stepping release position;

a pedal sensor for detecting the operational position of the operational pedal; and
controlling means for controlling an operation of the speed change operating means based on the output from the pedal sensor,
thereby to change the output from the stepless speed change device to a speed according to the output from the pedal sensor
in a speed change range between a set speed preset by a speed change operational tool and a zero speed;

wherein said controlling means includes, as speed change output setting data indicative of relationship between operational
positions of the operational pedal and outputs from the stepless speed change device, first data for setting a deceleration
completion position of the operational pedal where the output from the stepless speed change device is zero to provide a larger
operational amount of the operational pedal from said stepping release position, and second data for setting said deceleration
completion position to provide a smaller operational amount of the operational pedal from said stepping release position;
and

wherein upon detection, from the output from said pedal sensor during execution of a controlling operation based on said first
data, that the operational position of the operational pedal is at a position on the side of a stepping limit position beyond
said deceleration completion position, said controlling means is switched over from a state for executing the controlling
operation based on said first data to a state for executing the controlling operation based on said second data.

US Pat. No. 9,151,262

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle, comprising:
an engine;
an authentication processing unit for permitting the engine to be started only when stored authentication information and
authentication information inputted by a manual operation are identical to each other;

storage means for pre-storing the stored authentication information;
a first switch and a second switch for performing the manual operation,
wherein the stored authentication information is the number of operation iterations of the first switch and the number of
operation iterations of the second switch, at least one of the number of operation iterations of the first switch and the
number of operation iterations of the second switch being set to at least two, and the authentication processing unit being
configured to acquire, as the inputted authentication information, the number of operation iterations of the first switch
and the number of operation iterations of the second switch;

authentication information identifying means for comparing the inputted authentication information acquired by the authentication
processing unit with the stored authentication information; and

power controlling means for allowing power to be supplied to a starter motor of the engine when the inputted authentication
information is identical to the stored authentication information at the authentication information identifying means.

US Pat. No. 9,261,182

SHIFT POWER TRANSMISSION APPARATUS AND TRAVEL POWER TRANSMISSION DEVICE

Kubota Corporation, Osak...

1. A shift power transmission apparatus comprising:
an input shaft receiving engine drive force;
a hydraulic continuously variable transmission driven by the input shaft;
a planetary power transmission section combining the drive force from the input shaft and an output from the hydraulic continuously
variable transmission for outputting the combined drive force therefrom; and

an output rotary member outputting power to a travel apparatus,
wherein the planetary power transmission section and the output rotary member are arranged on a side of the hydraulic continuously
variable transmission associated with an engine-coupled side of the input shaft; and

wherein the drive force is inputted to the planetary power transmission section from a portion between the engine-coupled
side and a hydraulic continuously variable transmission-coupled side of the input shaft,

wherein the shift power transmission apparatus further comprises:
an input-side clutch mechanism switching the planetary power transmission section between an interlocking-on state and an
interlocking-off state with respect to the input shaft; and

an output-side clutch mechanism switching the output rotary member between an interlocking-on state and an interlocking-off
state with respect to a motor shaft of the hydraulic continuously variable transmission.

US Pat. No. 9,180,776

WORK VEHICLE WITH ENGINE MOUNTED REARWARDLY

KUBOTA CORPORATION, Osak...

1. A fuel system for a work vehicle comprising:
a fuel tank comprising a main tank body and an auxiliary tank body;
a canister;
a fuel-gas introducing passage for connecting a top portion of the auxiliary tank body to the canister;
the top portion of the auxiliary tank body being located higher than the main tank body when the fuel tank is installed on
the work vehicle; and

a fuel filling pipe extending through the top portion of the auxiliary tank body and having a first end arranged outside the
auxiliary tank body and a second end arranged within the auxiliary tank body

wherein the work vehicle is a mower and the main tank body has a larger horizontal cross-section than the auxiliary tank body.

US Pat. No. 9,429,066

SUBCHAMBER TYPE COMBUSTION CHAMBER FOR DIESEL ENGINE

KUBOTA Corporation, Osak...

1. A subchamber type combustion chamber for a diesel engine in which a subchamber is communicated with a main combustion chamber
through a nozzle hole, a fuel injection nozzle faces into the subchamber, and a glow plug extends into the subchamber,
wherein a heat generating portion of the glow plug includes a rod-shaped portion having an end defining a circular peripheral
edge and a projecting portion projecting from the end of the rod-shaped portion, the projecting portion having a convex curved
surface projecting from the circular peripheral edge of the end of the rod-shaped portion and reducing in diameter therefrom,

wherein the percentage of value P/D obtained by dividing projection dimension P of the projecting portion from the end of
the rod-shaped portion by diameter dimension D at the end of the rod-shaped portion is 3% to 23%, and

wherein the percentage of value S1/S2 obtained by dividing surface area S1 of the projecting portion of the glow plug by surface area S2 of the subchamber is 0.66% to 1.28%.

US Pat. No. 9,353,666

EXHAUST TREATMENT DEVICE OF DIESEL ENGINE

KUBOTA Corporation, Osak...

1. An exhaust treatment device of a diesel engine comprising:
a combustible gas generator,
a combustible gas generating catalyst chamber provided in the combustible gas generator,
a combustible gas generating catalyst for generating combustible gas, housed in the combustible gas generating catalyst chamber
and having a catalyst inlet portion at a central upper portion thereof and a catalyst outlet portion in a lower end portion
thereof,

a heater in the catalyst inlet portion of the combustible gas generating catalyst,
a liquid fuel retaining member fitted over a periphery of the heater, and
a guide plate positioned at a lower face of the liquid fuel retaining member,
an air-fuel mixing chamber formed at an upper portion of the combustible gas generator, air and liquid fuel being supplied
into the air-fuel mixing chamber to form an air-fuel mixture,

a combustible gas release port,
an exhaust passage, and
a diesel particulate filter (DPF),
wherein:
the air-fuel mixture is supplied from a lower end portion of the air-fuel mixing chamber to the combustible gas generating
catalyst through the catalyst inlet portion, and flows down the liquid fuel retaining member and along an upper face of the
guide plate to a periphery of the guide plate,

the heater radiates heat to generate combustible gas from the air-fuel mixture by the combustible gas generating catalyst,
the generated combustible gas flows out of the combustible gas generating catalyst through the catalyst outlet portion, and
is released from the combustible gas release port into the exhaust passage on an upstream side of the DPF, and

the combustible gas is burned with oxygen in exhaust located in the exhaust passage, which creates combustion heat thereby
increasing a temperature of the exhaust, and heat of the exhaust burning and removing particulate matter (PM) accumulating
in the DPF.

US Pat. No. 9,403,560

WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a driver's seat arranged in a front section of a vehicle body;
a rear seat arranged behind the driver's seat and comprising:
a seat portion;
a back portion; and
at least one link member arranged on a lateral side of the rear seat and being structured and arranged to allow switching
between a seating mode and a storage mode, wherein, in said seating mode, the back portion is positioned behind the seat portion,
and wherein, in said storage mode, the back portion is positioned in a more forward position; and

a carrier bed arranged in a rear section of the vehicle body.

US Pat. No. 9,238,899

FRONT LOADER

KUBOTA CORPORATION, Osak...

1. A front loader comprising:
a boom actuator configured to pivotally drive a boom along a vertical direction relative to a traveling vehicle body about
a first pivot axis which is oriented along a right/left direction;

a bucket actuator configured to pivotally drive a bucket along the vertical direction relative to the boom about a second
pivot axis which is oriented along the right/left direction;

a boom angle detector for detecting a vertical pivot angle of the boom;
a bucket angle detector for detecting a vertical pivot angle of the bucket relative to the boom;
a calculating section for calculating a ground pivot angle of the bucket based on an output from the boom angle detector and
an output from the bucket angle detector;

a manual controlling section for controlling operations of the boom actuator and the bucket actuator based on an operational
instruction outputted from an instruction operational tool;

a ground angle maintaining controlling section for controlling the operation of the bucket actuator based on an output from
the calculating section such that a ground pivot angle of the bucket may be maintained constant irrespective of any vertical
pivotal movement of the boom;

a storage section storing an elevation restricted angle which is set smaller by a set angle than an elevation limit angle
of the bucket and a lowering restricted angle which is set greater by a set angle than a lowering limit angle of the bucket;
and

the ground angle maintaining section being configured to stop the bucket actuator when it is detected based on an output from
the bucket angle detector, the elevation restricted angle and the lowering restricted angle, that a vertical pivot angle of
the bucket has reached the elevation restricted angle or the lowering restricted angle.

US Pat. No. 9,227,481

CABIN FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A cabin for a work vehicle having an air-conditioning duct (15) and an air conditioning unit (A), the cabin comprising:
an outer roof (13) and an inner roof (14) defining a space (a) therebetween;

an ambient air feed opening (13C) and an ambient air intake opening (13B) defined in the outer roof (13), the ambient air intake opening (13B) drawing in ambient air toward the ambient air feed opening (13C);

a circulation opening (14A) defined in the inner roof (14) for drawing in air within the cabin;

a valve mechanism (17) switchable between a first state in which the ambient air is drawn in through the ambient air intake opening (13B) to the space (a) defined between the outer roof (13) and the inner roof (14), and a second state in which the ambient air is cut off for circulating the air within the cabin to/from the space (a);

a driver's seat (12) positioned below the inner roof (14);

a pair of right and left front vertical frames (2);

a pair of right and left first rear vertical frames (2);

a pair of right and left second rear vertical frames (2) extending rearwardly of the first rear vertical frames (2); and

an annular upper frame (6) extending over respective upper ends of the front vertical frames (2), the first rear vertical frames (2) and the second rear vertical frames (2), the upper frame (6) including:

a front transverse frame portion extending over the respective upper ends of the right front vertical frame (2) and the left front vertical frame (2);

a right fore-and-aft frame portion (6A) extending over the respective upper ends of the right front vertical frame (2), the right first rear vertical frame (2) and the right second rear vertical frame (2);

a left fore-and-aft frame portion (6A) extending over the respective upper ends of the left front vertical frame (2), the left first rear vertical frame (2) and the left second rear vertical frame (2); and

a rear transverse frame portion (6B) extending over the respective upper ends of the right second rear vertical frame (2) and the left second rear vertical frame (2), the rear transverse frame portion (6B) having fore-and-aft extensions at opposite ends thereof to form a U-letter as seen from above, the rear transverse frame
portion (6B) projecting rearwardly from the right and left second rear vertical frames (2);

wherein the air conditioning unit (A) is housed within the space (a) defined between the outer roof (13) and the inner roof (14);

wherein the air conditioning unit (A) is located rearwardly of the right and left second rear vertical frames (2) and mounted adjacent to and inwardly of the rear transverse frame portion (6B) in form of the U-letter; and

the air conditioning unit (A) is located rearwardly with respect to a rearward end of the driver's seat (12).

US Pat. No. 9,173,346

RIDING MOWER WITH BLADE MOTOR CONTROL

KUBOTA CORPORATION, Osak...

1. A riding mower comprising:
a vehicle body having a driver seat;
a driving wheel unit supporting the vehicle body;
a mower unit comprising:
at least one blade structured and arranged to cut grass;
at least one blade motor structured and arranged to cause rotation of the at least one blade; and
at least one work condition detection sensor structured and arranged to detect a load of the at least one blade motor;
at least one of:
at least one running condition detection sensor structured and arranged to detect or sense a running condition of the driving
wheel unit; or

at least one steering condition detection sensor structured and arranged to detect or sense a steering condition; and
a sensor information processor structured and arranged to receive signals from:
the at least one work condition detection sensor; and
the at least one running condition detection sensor and/or the at least one steering condition detection sensor;
a mower controller that controls an operation of the at least one blade motor in one of a steady mode and a power saving mode
in which consumed power is smaller than the steady mode; and

a work load evaluator that evaluates the load of the at least one blade motor,
wherein the mower controller operates the at least one blade motor in the power saving mode when the load of the at least
one blade motor is determined to be below a threshold value and using information from the work load evaluator, and

wherein the at least one work condition detection sensor also senses an amount of rotation of the at least one blade motor.

US Pat. No. 9,096,127

DRIVE CONTROL SYSTEM FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A drive control system for a work vehicle, comprising:
a power transmission device having a drive mode switching mechanism that performs drive mode switching between a four-wheel
drive mode in which drive power is transmitted to front wheels and rear wheels and a two-wheel drive mode in which drive power
is transmitted to only the rear wheels;

a slip ratio detection unit that calculates a slip ratio with respect to a contact area of wheels that are being driven;
an inclination angle detection unit that detects an inclination angle in a front-back direction of the work vehicle; and
a drive mode control unit that outputs a drive mode switching request to the drive mode switching mechanism based on the slip
ratio detected by the slip ratio detection unit and the inclination angle detected by the inclination angle detection unit,

wherein a drive mode switching request for switching to the four-wheel drive mode is output in a case where a slip ratio exceeding
a slip ratio threshold set in advance is detected,

a drive mode switching request for switching to the two-wheel drive mode is output in a case where a reduction in the slip
ratio and a reduction in the inclination angle are detected, and

wherein an inclination angle, that is smaller by a predetermined percentage than the inclination angle detected by the inclination
angle detection unit at the time of outputting the drive mode switching request for switching to the four-wheel drive mode,
is stored as an inclination angle threshold, and wherein when the inclination angle detected by the inclination angle detection
unit after switching to the four-wheel drive mode is smaller than the inclination angle threshold, a drive mode switching
request for switching from the four-wheel drive mode to the two-wheel drive mode is outputted.

US Pat. No. 9,097,170

ENGINE

KUBOTA CORPORATION, Osak...

1. An engine having an exhaust manifold covered by a manifold heat shield cover and an exhaust pipe directed downward from
the exhaust manifold, the engine comprising:
a cooling fan disposed on a front portion of the engine and having an airflow path on which the exhaust pipe is disposed;
an auxiliary component heat shielding plate extending down from the manifold heat shield cover along a back side of and adjacent
the exhaust pipe;

an auxiliary engine component disposed beneath the manifold heat shield cover and having a front side that is spaced from
a back side of the auxiliary component heat shielding plate; and

an air flow guide plate positioned between the exhaust pipe and a cylinder block so as to provide an air flow space between
the air flow guide plate and the cylinder block,

wherein a cooling air flow passing through the air flow space is supplied to the auxiliary engine component.

US Pat. No. 9,045,016

HYDRAULIC SUSPENSION SYSTEM FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A hydraulic suspension system comprising:
a suspension mechanism for a traveling vehicle body;
a suspension reference position variation mechanism for varying a reference position of a suspension stroke of the suspension
mechanism;

an intermediate value calculator for detecting a maximum position and a minimum position of the suspension stroke and calculating
an intermediate value between the maximum and minimum positions;

a cumulating unit for cumulating a frequency at which an intermediate position deviates from a target range as a cumulative
frequency;

a control unit for controlling an operation variation mechanism so that the intermediate position moves in a preset target
direction when the cumulative frequency obtained from the cumulating unit exceeds a preset cumulative frequency;

a stopped state detector for detecting a state in which operation of the suspension mechanism has stopped; and
a control management unit for controlling the suspension reference position variation mechanism so that when an operation
of the suspension mechanism is detected to be in a stopped state, the operation of the suspension mechanism moves toward the
target range, in preference to control based on the cumulative frequency of the cumulating unit.

US Pat. No. 9,428,048

WORK VEHICLE WITH IMPROVED FUEL TANK MOUNTING

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a vehicle body frame;
a cabin mounted to the vehicle body frame so as to be isolated from vibration;
a fuel tank located at least partially below the cabin,
a bracket extending laterally outward in cantilever from at least one of a left side and a right side; and
the bracket comprises:
a cabin support portion carrying and supporting one front-back direction side of the cabin from below via a vibration isolation
member; and

a tank support portion supporting one front-back direction side of the fuel tank.

US Pat. No. 9,377,034

WORK MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a plurality of hydraulic actuators;
a variable displacement hydraulic pump for supplying pressure oil to these hydraulic actuators; and
a load sensing system for controlling a discharge pressure of the hydraulic pump so as to render a differential pressure obtained
by subtracting a maximum load pressure among the hydraulic actuators from a discharge pressure of the hydraulic pump to be
a constant pressure, wherein

the working machine is provided with: a first load pressure flow passage which introduces load pressures of the hydraulic
actuators to be outputted to a PLS transmission line which transmits the maximum load pressure among the hydraulic actuators
at the time of activating the hydraulic actuators; and

a second load pressure flow passage which is a flow path for introducing the load pressures of the hydraulic actuators to
be outputted to said PLS transmission line during operation after activations of the hydraulic actuators, and wherein a flow
rate of the pressure oil therein is reduced lower than that in said first load pressure flow passage.

US Pat. No. 9,308,819

SPEED CHANGE CONTROL SYSTEM FOR A VEHICLE

Kubota Corporation, Osak...

1. A speed change control system having a constant speed mode for causing a vehicle to travel at a constant speed, comprising:
a stepless speed change device for steplessly speed-changing a rotational power from an engine and outputting the speed-changed
power;

a speed change control section for setting a speed change value of the stepless speed change device;
a speed change operational tool for providing the speed change control section with a speed change command;
a constant speed travel operational device for providing the speed change control section with a changing command for changing
a constant speed mode speed change value which is a speed change value at the time of the constant speed mode, a shifting
command for shifting to the constant speed mode, and a departing command for departing from the constant speed mode;

a storage section for storing the constant speed mode speed change value set by the constant speed travel operational device;
and

a constant speed travel management section for causing the speed change control section to execute the constant speed mode
with using the constant speed mode speed change value retrieved from the storage section, based on the shifting command from
the constant speed travel operational device,

wherein the constant speed travel operational device is constituted of a single constant speed travel operational instrument,
and

the constant speed travel operational instrument has a changing operational position for providing the speed change control
section with the changing command by a predetermined speed change value unit, a shifting operational position for providing
the speed change control section with the shifting command, and a departing operational position for providing the speed change
control section with the departing command, and

wherein the constant speed travel operational instrument is capable of operational displacements in one direction and in the
other direction, across and relative to a neutral position as a reference point to which the instrument is urgedly maintained,

a terminal end operational displacement position in the one direction is the shifting operational position,
a terminal end operational displacement position in the other direction is the departing operational position, and
a unit operational displacement position to the terminal operational displacement positions in the one direction and the other
direction is the changing operational position.

US Pat. No. 9,307,695

WIND-GENERATING MOWER BLADE

Kubota Corporation, Osak...

1. A cutter blade for a mower which is driven to rotate about a vertical axis inside a housing, the cutter blade comprising:
a blade body;
a blade portion formed in the blade body; and
a pair of wind generating portions, each of the wind generating portions being formed in the blade body on its side opposite
in a width direction thereof to the side where the blade portion is formed, the wind generating portions being formed by being
raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof;

wherein at an outer end portion of the wind generating portions in the longitudinal direction of the blade body, there are
formed a plurality of recessed portions, each of the recessed portions being recessed more inwards than the remaining portion
of the outer end portion;

wherein there are formed protruding portions at respective areas between and across adjacent recessed portions; and
wherein the recessed portion in one of the pair of wind generating portions is formed at a position orthogonal to a position
of the protruding portion in the other of the pair of wind generating portions across the vertical axis of the cutter blade.

US Pat. No. 9,097,340

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
an engine;
a traveling hydrostatic stepless speed changer apparatus including,
a variable displacement type hydraulic pump driven by the engine;
a variable displacement type hydraulic motor driven by work oil from the hydraulic pump, and
a high-pressure oil passage and a low-pressure oil passage connecting the hydraulic pump with the hydraulic motor;
a hydraulic actuator for operating a swash plate of the hydraulic motor; and
a charge pump driven by the engine for feeding the work oil to the high-pressure oil passage and the low-pressure oil passage;
wherein the hydraulic actuator is arranged such that the hydraulic actuator operates the swash plate of the hydraulic motor
by a first pilot pressure and a second pilot pressure, the first pilot pressure being branched from the high-pressure oil
passage and applied to the hydraulic actuator for operating the swash plate of the hydraulic motor to a low speed side, the
second pilot pressure being branched from the charge pump and applied to the hydraulic actuator for operating the swash plate
of the hydraulic motor to a high speed side.

US Pat. No. 9,469,189

WORK VEHICLE WITH IMPROVED EXHAUST COMPONENT COOLING

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a diesel engine mounted in a rear portion of a vehicle frame;
a cooling fan arranged forward of the diesel engine;
an exhaust gas purification device configured to filter particulate matter contained in exhaust gas discharged from the diesel
engine;

an exhaust discharge opening expelling the exhaust gas to a vehicle exterior;
an inlet-side exhaust passage conveying exhaust gas from an exhaust manifold of the diesel engine to an inlet of the exhaust
gas purification device;

an outlet-side exhaust passage conveying exhaust gas from an outlet of the exhaust gas purification device to the exhaust
discharge opening;

a first portion of the outlet-side exhaust passage extending from the outlet of the exhaust gas purification device to a first
end portion of the exhaust gas purification device; and

a second portion of the outlet-side exhaust passage arranged downstream of the first portion and being each of:
oriented along a transverse direction of the work vehicle; and
arranged below the exhaust gas purification device.

US Pat. No. 9,315,103

MULTIFUNCTION OPERATION TOOL AND ARMREST OPERATION DEVICE

KUBOTA CORPORATION, Osak...

1. A multifunction operation tool controlling a work vehicle with speed changing capability, the multifunction operation tool
comprising:
a swing body swingably supported at least in a front/back direction of a vehicle body for implementing acceleration control
and deceleration control;

a grip body arranged on a free end portion of the swing body;
a grip part arranged on the grip body and being defined by a convex surface arranged on a first lateral area of the grip body
and a vertical lateral surface;

a second lateral area arranged on the grip body and being located on an opposite lateral side of the vertical lateral surface
of the grip part;

an operator-facing surface arranged on the second lateral area of the grip body and extending to the vertical lateral surface;
and

operation switches,
wherein at least one operation switch is arranged on the vertical lateral surface and two or more operation switches are arranged
on the operator-facing surface.

US Pat. No. 9,238,900

FRONT LOADER

KUBOTA CORPORATION, Osak...

1. A front loader comprising:
a boom actuator configured to pivotally drive a boom along a vertical direction relative to a traveling vehicle body about
a first pivot axis which is oriented along a right/left direction;

a bucket actuator configured to pivotally drive a bucket along the vertical direction relative to the boom about a second
pivot axis which is oriented along the right/left direction;

a manual controlling section for controlling operations of the boom actuator and the bucket actuator based on a manual operation
of an operational tool;

a boom angle detector for detecting a vertical pivot angle of the boom;
a bucket angle detector for detecting a vertical pivot angle of the bucket relative to the boom;
a calculating section for calculating a ground pivot angle of the bucket based on an output from the boom angle detector and
an output from the bucket angle detector;

a storage section storing relation data representing relation between a vertical pivot angle of the boom and a limit scoop
angle of the bucket;

a setting section for setting the limit scoop angle corresponding to a vertical pivot angle of the boom, based on the output
from the boom angle detector and the relation data; and

a scoop angle limit controlling section configured to control an operation of the bucket actuator in such a manner that the
ground pivot angle of the bucket will not exceed the set limit scoop angle when arrival of the ground pivot angle of the bucket
at the set limit scoop angle is detected based on an output from the setting section and an output from the calculating section.

US Pat. No. 9,216,777

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body;
a seat section;
a load-carrying platform disposed rearwardly of the seat section, the load-carrying platform having a bottom portion;
a storage space disposed rearwardly of the seat section and immediately under the bottom portion of the load-carrying platform,
the storage space extending in a lateral width direction of the vehicle body, and the storage space opening toward a lateral
side of the vehicle body;

an engine; and
a speed changer receiving power from the engine;
wherein the engine and the speed changer are disposed rearwardly of the storage space.

US Pat. No. 9,165,127

WORKING MACHINE, DATA COMMUNCATION SYSTEM FOR WORKING MACHINE, OPERATION SYSTEM FOR WORKING MACHINE, AND SETTING CHANGE SYSTEM FOR WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising
a control device configured to make wireless communication with a mobile terminal and including a working machine-use ID code
and a registration code stored therein, the working machine-use ID code being different from the registration code, wherein
the machine-use ID code is pre-assigned to said working machine when manufactured, and the registration code is pre-set for
said working machine and used for a user registration,

said control device comprising:
an ID code registration device configured to perform said user registration by checking whether a registration code inputted
by a user matches with said registration code stored in the control device, and configured to, only when the registration
code inputted by the user matches with said registration code stored in the control device, transmit the working machine-use
ID code stored in the control device to the mobile terminal and to instruct the mobile terminal to register said transmitted
working machine-use ID code as a mobile-use ID code, said mobile-use ID code being saved in a storage part of the mobile terminal
and used for an authentication process;

an ID code checking device configured to, during said authentication process, check whether said mobile-use ID code stored
in the mobile terminal and said working machine-use ID code stored in the control device match with each other; and

a data communication device configured to enable data communication between the mobile terminal and the control device when
the ID code checking device establishes matching between the mobile-use ID code and the working machine-use ID code and to
disable the data communication when the ID code checking device does not establish the matching.

US Pat. No. 9,302,582

DISPLAY SYSTEM FOR WORK VEHICLE HAVING POWER TAKE OFF (PTO)

Kubota Corporation, Osak...

1. A display system for a work vehicle having at least one kind of Power Take Off (PTO) mode, comprising:
a rotation speed display section for selectively displaying an engine rotation speed or at least one kind of PTO rotation
speed in a same display area;

a display selection switch for outputting an engine display selection command selecting the engine rotation speed to be displayed,
and also outputting a PTO display selection command selecting the PTO rotation speed to be displayed;

a discrimination display section for displaying a group of discriminating objects each having an icon, the icon having a turn-ON
state and a turn-OFF state; and

a display control section for controlling contents displayed by the rotation speed display section, and also controlling the
turn-ON state and the turn-OFF state of the icon of the discrimination display section;

wherein the group of discriminating objects includes an engine discrimination object for identifying the engine rotation speed
and at least one kind of PTO discrimination object for identifying the PTO rotation speed;

wherein in response to the engine display selection command, the display control section provides the rotation speed display
section with an engine rotation speed display signal generated based on a detection signal from an engine rotational speed
sensor that detects the engine rotational speed, and the icon of the engine discrimination object to be turned ON and the
icon of each of any other discrimination objects than the engine discrimination object to be turned OFF; and

wherein in response to the PTO display selection command, the display control section provides the rotation speed display
section with a PTO rotation speed display signal generated based on a detection signal from the engine rotational speed sensor,
and causes the discrimination display section to turn the icon of the PTO discrimination object associated with the PTO display
selection command ON and turn the icon of each of any other discrimination objects other than the turned-ON discrimination
object OFF;

wherein when the PTO display selection command is outputted and power transmission to the PTO shaft is blocked, the display
control section provides the rotation speed display section with a display signal indicative of a zero rotational speed instead
of the PTO rotation speed display signal; and

wherein when the engine display selection command is outputted and the power transmission to the PTO shaft is blocked, the
display control section provides the rotation speed display section with the engine rotation speed display signal.

US Pat. No. 9,222,383

WORKING VEHICLE INCLUDING EXHAUST GAS TREATMENT DEVICE

Kubota Corporation, Osak...

1. A working vehicle comprising:
an engine;
a vehicle body frame on which the engine is mounted;
an exhaust gas treatment device for treating exhaust gas of the engine;
a fixing base for fixing the exhaust gas treatment device, the fixing base being separated from the engine by a gap;
a support body for connecting the fixing base to the vehicle body frame, the support body being separated from the engine
by a gap; and

a bellows pipe for absorbing solid-borne sound, the bellows pipe being provided in a connection area where a suction pipe
of the exhaust gas treatment device is connected to an exhaust manifold of the engine,

wherein the suction pipe includes an upper pipe portion extending from a portion below a transverse cross-sectional center
of the exhaust gas treatment device and being bent obliquely downward at an obtuse angle, and a lower pipe portion forming
the connection area, and a depression angle of a pipe axis of the lower pipe portion relative to the exhaust gas treatment
device is larger than that of the upper pipe portion.

US Pat. No. 9,437,098

OPERATION MACHINE

KUBOTA CORPORATION, Osak...

1. An operation machine comprising:
a warning generation means configured to determine whether there is abnormality or not and to generate a warning when there
is abnormality;

a warning storage means configured to store warning information on the warning;
a display means configured to display the warning information stored in the warning storage means; and
a warning pseudo erasing means configured to erase specified warning information of the warning information in a pseudo-erasing
manner, the warning pseudo erasing means being configured to provide, after the warning information displayed by the display
means is specified as the specified warning information, an instruction to make the specified warning information remain in
the warning storage means and to make the display means not display the specified warning information.

US Pat. No. 9,323,278

CONTROL LEVER SYSTEM

Kubota Corporation, Osak...

1. A control lever system for a work vehicle having a frame structure delimiting between an operator-side space adjacent to
an operator and a device-side space adjacent controlled devices, the control lever system comprising:
a floor panel having a flat surface portion, the floor panel forming a part of the frame structure;
a pivotal shaft extending along the floor panel and mounted adjacent a lever opening formed in the flat surface portion;
a boss portion supported to the pivotal shaft to be rotatable about the pivotal shaft;
a control lever portion radially extending from the boss portion to the operator-side space;
a controlled lever portion radially extending from the boss portion to the device-side space; and
a seal member for closing a gap between the boss portion and an area of the flat surface portion where the lever opening is
formed, the boss portion coming into contact with a portion of the seal member adjacent the boss portion,

wherein the seal member has a substantially rectangular cross-sectional shape, the seal member being attached to a lower side
surface of the flat surface portion such that a terminal edge of the seal member comes into direct contact with an outer periphery
of the boss portion over and across an axial length of the boss portion.

US Pat. No. 9,200,551

EXHAUST TREATMENT APPARATUS FOR ENGINE

KUBOTA Corporation, Osak...

1. An exhaust treatment apparatus for an engine, comprising:
an exhaust passage;
an oxidation catalyst that is disposed in the exhaust passage;
a combustible gas generator;
a combustible gas supplying passage that is disposed in parallel to and beneath the exhaust passage;
a heat releasing port that is opened in an upstream side in the exhaust passage from the oxidation catalyst and in a downstream
side in the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating
with each other through the heat releasing port;

an ignition apparatus that is disposed beneath the heat releasing port, heat of flaming combustion of combustible gas ignited
by the ignition apparatus being supplied to the exhaust passage to raise a temperature of exhaust in the exhaust passage;
and

a flame holding plate that is provided beneath the heat releasing port in a downstream side in the combustible gas supplying
passage from the ignition apparatus, wherein

an exhaust guiding plate is provided at a top portion of the flame holding plate,
the exhaust guiding plate is bent to form an upward slope toward a downstream side in the exhaust passage, and
the exhaust guiding plate covers the ignition apparatus from diagonally above,
a flame holding plate-equipped component that is equipped with the flame holding plate, the flame holding plate-equipped component
being fixed by being clamped between an exhaust upstream side component and an exhaust downstream side component;

an exhaust upstream side gasket that is clamped between an exhaust upstream side face of the flame holding plate-equipped
component and the exhaust upstream side component; and

an exhaust downstream side gasket that is clamped between an exhaust downstream side face of the flame holding plate-equipped
component and the exhaust downstream side component, wherein

when the flame holding plate-equipped component, the exhaust upstream side gasket, and the exhaust downstream side gasket
are seen from their respective exhaust upstream side faces, an exhaust upstream side leading piece that is led out toward
an exhaust upstream side and an exhaust downstream side leading piece that is led out toward an exhaust downstream side are
provided on one of right and left sides of the flame holding plate-equipped component, wherein

exhaust upstream side engaging pieces are provided on right and left sides of the exhaust upstream side gasket, respectively,
exhaust downstream side engaging pieces are provided on right and left sides of the exhaust downstream side gasket, respectively,
in a proper overlaid state where the exhaust upstream side gasket, the flame holding plate-equipped component, and the exhaust
downstream side gasket are overlaid in this order from an exhaust upstream side having their respective exhaust upstream side
faces oriented in an identical direction, the components are overlaid as being closely attached to one another, and

in an improper overlaid state where at least one of an overlaying order of the exhaust upstream side gasket, the flame holding
plate-equipped component, and the exhaust downstream side gasket and an orientation of the components is different from that
in the proper overlaid state, wherein at least one of the exhaust upstream side engaging pieces and the exhaust downstream
side engaging pieces interfere with at least one of the exhaust upstream side leading piece and the exhaust downstream side
leading piece, such that at least two components out of the overlaid components are not closely attached to each other.

US Pat. No. 9,174,613

VEHICLE SPEED OPERATING DEVICE FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A vehicle speed operating device for a work vehicle having a body frame, a travel device and a brake for braking the travel
device, comprising:
a continuously variable transmission having an operating shaft;
a shift pedal disposed on a first lateral surface side that is one of left and right lateral surfaces of the body frame;
a first mechanical linkage mechanism linking the shift pedal on the first lateral surface side to the operating shaft;
a brake pedal disposed on a second lateral surface side that is the other of the left and right lateral surfaces of the body
frame, and linked to the brake;

a linkage shaft rotatably provided on the body frame and passing laterally through the body frame;
a first projecting end portion, of the linkage shaft, projecting from the first lateral surface and having attached thereto
one or both of the shift pedal and the first mechanical linkage mechanism;

a second projecting end portion, of the linkage shaft, projecting from the second lateral surface;
a speed maintenance mechanism linked to the second projecting end portion with a configuration capable of holding the operating
shaft at a given shift position via the linkage shaft, and disposed on the second lateral surface side; and

a second mechanical linkage mechanism disposed on the second lateral surface side, and linking the brake pedal to the speed
maintenance mechanism, such that the speed maintenance mechanism is switched from a state of holding the operating shaft at
a given shift position to a state of releasing the holding, in tandem with the brake pedal being pressed down.

US Pat. No. 9,328,743

PRESSURE EXCHANGER AND PERFORMANCE ADJUSTMENT METHOD OF PRESSURE EXCHANGER

Kubota Corporation, Osak...

1. A pressure exchanger for exchanging pressures between a first fluid and a second fluid, the pressure exchanger comprising:
a rotator having, around a rotation axis, a pressure transmission section provided such that a first flow path into or out
of which the first fluid flows from a first end of the rotator is communicated with a second flow path into or out of which
the second fluid flows from a first end of the rotator;

a first lateral member provided, in a thickness direction along the rotation axis, with a first fluid inflow path for guiding
the first fluid to the first flow path, a second fluid outflow path for guiding the second fluid after the exchanging of pressures
from the second flow path, a second fluid inflow path for guiding the second fluid to the second flow path, and a first fluid
outflow path for guiding the first fluid after the exchanging of pressures from the first flow path; and

a second lateral member, wherein the rotator is rotatably sandwiched between the first lateral member and the second lateral
member, with a retentive member being interposed therebetween,

wherein the rotator is accommodated in a space defined by the first and second lateral members, and the retentive member is
sandwiched between the lateral members, the first flow path and the second flow path pass through the rotator, and gaps into
which the first fluid and the second fluid flow are provided between the rotator and the first and second lateral members,
respectively, and

wherein the first and second lateral members are provided outside the rotator with press spaces pressing the lateral members
toward the rotator, and the first and second lateral members are provided with continuous holes for guiding at least one of
the first fluid and the second fluid supplied to the first flow path or the second flow path into the press spaces.

US Pat. No. 9,421,841

HYDRAULIC SUSPENSION SYSTEM FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A hydraulic suspension system for a work vehicle equipped with an implement, comprising:
a suspension mechanism for a traveling vehicle body;
a suspension reference position variation mechanism for varying a reference position of a suspension stroke of the suspension
mechanism;

a suspension stroke position sensor for detecting a suspension stroke position;
a control unit for controlling the suspension reference position variation mechanism on a basis of the suspension stroke position
so that the suspension stroke of the suspension mechanism moves toward a preset target range;

an operation detector for detecting an operation for raising or lowering the implement; and
a control management unit for increasing a control frequency of the suspension reference position variation mechanism to be
greater than a frequency when the implement is not being raised or lowered, on a basis of raising or lowering operation information
generated by the operation detector.

US Pat. No. 9,174,854

BRONZE-TYPE TITANIUM OXIDE COMPOUND CONTAINING POTASSIUM, METHOD OF MANUFACTURING THE SAME, AND LITHIUM-ION SECONDARY BATTERY USING THE SAME

Kubota Corporation, Osak...

1. A bronze-type titanium oxide in which potassium tetratitanate expressed by a general formula K2Ti4O9 is obtained by converting a mixture of a titanium compound and a potassium compound into potassium dititanate expressed by
a general formula K2Ti2O5 by burning processing, then eluting a part of potassium ions of the potassium dititanate to change a composition thereof and
thereafter performing thermal processing, and which is obtained by eluting potassium of the obtained potassium tetratitanate
and performing thermal processing,
wherein, in an X-ray diffraction spectrum of the potassium tetratitanate obtained by using a Cu—K? ray source, between a peak
intensity Ia of a (200) plane, a peak intensity Ic of a (004) plane and a peak intensity Ib of a (31-3) plane, a relationship
of Ia>Ib>Ic and a relationship of 5.0>Ia/Ic>2.0 are satisfied, and

a concentration of potassium in the bronze-type titanium oxide is equal to or more than 0.1 mass percent but equal to or less
than 2.0 mass percent.

US Pat. No. 9,045,171

WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
an engine compartment supported by a vehicle frame and being located behind a driver seat;
the engine compartment comprising a front area, a middle area, and a rear area and being sized and configured to contain therein
an engine and at least one engine accessory;

a fixed hood structured and arranged to cover the rear area;
a swing hood movable about a swing axis between at least a closed position and an open position;
the swing axis extending through the rear area along a direction transverse to a longitudinal direction of the vehicle,
wherein, in the open position, the swing hood covers and at least partially contains therein the fixed hood,
wherein, in the closed position, the swing hood covers the front area and middle area and includes a portion that overlaps
a front end portion of the fixed hood, and

wherein the swing hood overlaps more of lateral side portions of the fixed hood in the open position than in the closed position.

US Pat. No. 9,488,300

PIPE JOINT

Kubota Corporation, Osak...

1. A pipe joint in which a spigot formed at an end of one pipe is inserted into a socket formed at an end of another pipe,
the pipes being joined to each other, the pipe joint comprising:
an annular sealing material interposed and compressed between an inner circumferential surface of the socket and an outer
peripheral surface of the spigot to exhibit desired sealing properties; and

a push ring fastened to the socket to keep the sealing material in a compressed state in which the sealing material is interposed
between the inner circumferential surface of the socket and the outer peripheral surface of the spigot,

wherein spacers for forming a space between the socket and the push ring are provided between the socket and the push ring
fastened to the socket and at a plurality of spaced-apart points in a circumferential direction of the push ring or the socket,

wherein at least one of the spacers is monolithically formed on at least one of the socket and the push ring so as to protrude
in a pipe axial direction, and

wherein the space between the socket and the push ring provides communication between the sealing material and an outer periphery
of the push ring and the socket in a pipe diameter direction.

US Pat. No. 9,416,704

EXHAUST GAS TREATMENT DEVICE OF ENGINE

KUBOTA Corporation, Osak...

1. An exhaust gas treatment device of an engine comprising a combustible gas generating catalyst (2) and an exhaust gas treatment portion (10), in which combustible gas (8) is produced by catalytic reaction which generates heat at the combustible gas generating catalyst (2), the combustible gas (8) is mixed with exhaust gas (9) which passes through an engine exhaust gas path (4), and the exhaust gas (9) heated by combustion of the combustible gas (8) is supplied to the exhaust gas treatment portion (10), wherein the combustible gas generating catalyst (2) comprises an aggregate of a plurality of catalyst portions (2a), each of the catalyst portions (2a) includes a matching surface (2b) with respect to adjacent one of the catalyst portions (2a), a fastening ring (11) is fitted over the combustible gas generating catalyst (2) in which the matching surfaces (2b) of the adjacent catalyst portions (2a) are abutted against each other, and the matching surfaces (2b) of the adjacent catalyst portions (2a) are brought into tight contact with each other by a fastening force of the fastening ring (11).

US Pat. No. 9,416,881

HIGH TEMPERATURE GATE VALVE

KUBOTA CORPORATION, Osak...

1. A high temperature gate valve comprising:
a valve body including:
a valve body main portion having a flow path; and
a bonnet portion;
a valve element configured to open and close the flow path by moving between an open position and a closing position along
an axis; and

a plurality of guide members provided in the valve body, configured to guide the valve element in an axis direction,
wherein the valve element slides along the axis direction guided by the guide members, the valve element at the closing position
blocking the flow path by projecting into the valve body main portion, and at the open position retracting into the bonnet
portion from the valve body main portion,

and wherein each of the guide members is divided into a plurality of guiding elements divided in the axis direction, the plurality
of guiding elements in each of the guide members being aligned in the axis direction, a gap being formed between adjacent
guiding elements in the axis direction, each of the guiding elements being welded to an inside of the valve body.

US Pat. No. 9,155,245

WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A ride-on work vehicle comprising:
an engine in which a plurality of pulleys for transmitting power are fitted to an output shaft disposed in such a manner as
to project downward from a bottom;

a mount surface comprising an opening into which the plurality of pulleys can be inserted;
the engine being mounted on the mount surface with the plurality of pulleys inserted into the opening from above;
said opening into which the plurality of pulleys can be inserted being sized to allow removal of the engine with said pulleys
fitted to the output shaft;

a mower unit disposed forward of the engine; and
a rotatable drive wheel,
wherein the power of the engine is transmitted to the mower unit via at least one of the plurality of pulleys, and further,
is transmitted to the drive wheel via at least one of the plurality of pulleys.

US Pat. No. 9,079,491

WORK VEHICLE

Kubota Corporation, Osak...

1. A power transmission apparatus for a work vehicle, comprising:
a speed change device for shifting power from an engine and transmitting the power to a propelling line;
a forward/reverse drive switching device for switching power from the engine between forward drive and reverse drive;
a PTO shaft for taking off working power;
a working transmission line for transmitting power from the engine to the PTO shaft;
a clutch element for establishing and breaking power transmission from the engine to the PTO shaft; and
a transmission case including a first housing space for housing the speed change device, and a second housing space defined
rearward of the first housing space for housing the forward/reverse drive switching device,

wherein the clutch element is housed in the first housing space.

US Pat. No. 9,493,180

TRAVELING VEHICLE

KUBOTA CORPORATION, Osak...

1. A traveling vehicle comprising:
a traveling machine body supported by a pair of left and right driving wheels;
a pair of left and right motors connected to the pair of left and right driving wheels, respectively, and configured to independently
drive the pair of left and right driving wheels, respectively;

a riding part disposed behind the traveling machine body, connected to the traveling machine body, and configured to enable
riding of a worker;

a handle connected to the traveling machine body so as to be swingable left and right with respect to the traveling machine
body;

a weight shift detection sensor configured to detect a forward and backward weight shift of the worker who is riding on the
riding part;

a swinging operation detection sensor configured to detect a leftward and rightward swinging operation amount of the handle;
and

a controller configured to control operation of the pair of left and right motors based on detection values by the weight
shift detection sensor and the swinging operation detection sensor.

US Pat. No. 9,457,756

WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a vehicle body;
a cockpit section arranged in a front area of the vehicle body;
a carrier bed arranged in a rear area of the vehicle body;
a rollover protective structure protecting the cockpit section;
the rollover protective structure including:
a pair of left and right front supporting columns arranged in a front area of the cockpit section;
a pair of left and right rear supporting columns arranged in a rear area of the cockpit section;
a rearward overhanging frame extending rearward from an upper part of the rear supporting columns; and
a rear end and corner areas of the rearward overhanging frame being free of and unsupported by any vertical supporting columns.

US Pat. No. 9,416,707

DIESEL ENGINE

KUBOTA Corporation, Osak...

1. A diesel engine comprising:
an engine body;
a DPF (diesel particulate filter);
an SCR catalyst (selective catalytic reduction catalyst);
a DPF case;
an SCR catalyst case; and
an SCR base bracket, wherein
the DPF is accommodated in the DPF case,
the SCR catalyst is accommodated in the SCR catalyst case,
the DPF case and the SCR catalyst case are mounted on the engine body,
the SCR catalyst case is placed in a direction which extends along the DPF case,
a flywheel housing is placed on a rear end of a cylinder block of the engine body,
a cylinder head cover is placed on an upper portion of a cylinder head of an upper portion of the cylinder block of the engine
body,

the DPF case is placed directly above the flywheel housing and right behind the cylinder head cover,
the SCR catalyst case is placed directly above the cylinder head cover,
the SCR catalyst case is placed and mounted on the SCR base bracket, and
the SCR base bracket includes a forwardly-extending portion which extends forward and is supported by an intake manifold through
a front support stay.

US Pat. No. 9,272,636

WORK VEHICLE FOR TRANSMITTING DRIVE POWER FROM AN ELECTRIC MOTOR TO A PROPELLING TRANSMISSION SYSTEM

Kubota Corporation, Osak...

1. A work vehicle comprising:
a power unit;
an electric motor activated by electric power from the power unit;
a power control unit for controlling electric power supplied from the power unit to the electric motor; and
a propelling transmission system for receiving drive power from the electric motor,
wherein the power control unit is arranged in a portion of a rear fender projecting outwardly from a propelling vehicle body
to cover above a rear wheel.

US Pat. No. 9,125,340

RIDE-ON LAWN MOWER

Kubota Corporation, Osak...

1. A ride-on lawn mower comprising:
a traveling vehicle body including an operator's seat, and a wheel post for supporting a steering wheel mounted forward of
the operator's seat;

a mower apparatus connected to a front part of the traveling vehicle body;
a roll-over protective structure mounted in a rear part of the operator's seat; and
a front guard provided on the wheel post and extending upward from the wheel post and forward of the steering wheel.

US Pat. No. 9,404,814

ENGINE EXHAUST HEAT TEMPERATURE DETECTION DEVICE

KUBOTA CORPORATION, Osak...

1. An engine exhaust heat temperature detection device comprising:
an exhaust gas temperature detection sensor arranged at a position so as not to be directly exposed to exhaust gas;
said position being outside of an exhaust pipe peripheral wall on a far side of a curvature center, and outside a muffler
provided in an exhaust gas flow passage of an engine, the muffler having a portion that causes internal moving exhaust gases
to impinge at a heat spot, wherein the exhaust gas temperature detection sensor is located outside of the muffler adjacent
to the heat spot and adapted to detect that an atmosphere temperature at the position outside the muffler has reached a predetermined
temperature indicative of an increase in a temperature inside the muffler, or outside an exhaust pipe constituting the exhaust
gas flow passage on a more downstream side than the muffler in an exhaust direction, the exhaust pipe having a portion that
causes internal moving exhaust gases to impinge at a heat spot, wherein the exhaust gas temperature detection sensor is located
outside of the exhaust pipe adjacent to the heat spot and adapted to detect that an atmosphere temperature at the position
outside the exhaust pipe has reached a predetermined temperature indicative of an increase in a temperature of an exhaust
gas inside the exhaust pipe.

US Pat. No. 9,155,246

RIDING TYPE MOWER

KUBOTA CORPORATION, Osak...

1. A riding mower, comprising:
a mower body frame extending in front-and-rear directions between a pair of left and right rear wheels;
a mower deck;
cutting blades;
a horizontal installation surface defined in an area near the rear wheels;
an engine arranged on the installation surface, rearward of one or two axles of the rear wheels;
an operator's seat arranged forward of the engine; and
a fuel tank located on the mower body frame in a manner which contributes to vehicle stability, the fuel tank including:
a front tank portion extending in the front-and-rear directions below the operator's seat;
a rear tank portion connected with the front tank portion, extending in mower body front-and-rear directions on one side of
the engine in mower body transverse directions, and extending higher than the front tank portion; and

a rear end of the rear tank portion extending further rearward than an axis of the pair of left and right rear wheels.

US Pat. No. 9,393,524

ENGINE EXHAUST TREATMENT DEVICE

KUBOTA Corporation, Osak...

1. An engine exhaust treatment device for generating a combustible gas, the device comprising;
a combustible gas generator;
a combustible gas emission port for emitting the combustible gas to an exhaust passage;
a combustion catalyst for catalyst-combusting the combustible gas; and
a diesel particulate filter arranged on a downstream side of the combustion catalyst,
wherein a temperature of an exhaust increases by heat of the catalyst combustion of the combustion catalyst, particulate matter
accumulated in the diesel particulate filter are combusted and removed, a combustible gas supply passage communicates with
the exhaust passage on an upstream side of the combustion catalyst, and an air supply unit and an ignition unit are provided
in the combustible gas supply passage, the air supply unit and the ignition unit being interlocked with a control unit, such
that in a case where the temperature of the exhaust is lower than a predetermined temperature, the control unit supplies air
to the combustible gas by the air supply unit and causes ignition of the combustible gas by the ignition unit, so as to cause
flame combustion of the combustible gas, and such that the temperature of the exhaust in the exhaust passage is increased
by heat of the flame combustion, and

wherein a mixing chamber for mixing the combustible gas and the air is formed along the combustible gas supply passage on
an upstream of the ignition unit, a combustible gas nozzle and an air supply tube being provided in the mixing chamber, the
combustible gas nozzle being arranged in a center part of the mixing chamber along a forming direction of the mixing chamber,
a plurality of combustible gas outlets being formed on a circumferential surface of the combustible gas nozzle, the air supply
tube being arranged in an inner circumferential surface part of the mixing chamber along a circumferential direction of an
inner circumferential surface of the mixing chamber, the air supplied from the air supply tube being whirled around the combustible
gas nozzle along the inner circumferential surface of the mixing chamber, and the combustible gas supplied in a radial direction
of the mixing chamber from the combustible gas outlets being mixed with the whirled air.

US Pat. No. 9,334,626

WORKING MACHINE

KUBOTA CORPORATION, Osak...

2. A working machine comprising:
an operator seat;
a right side panel provided on a right side of the operator seat;
a left side panel provided on a left side of the operator seat; and
a joint structure configured to joint an upper portion of an intermediate portion of the right side panel and an upper portion
of an intermediate portion of the left side panel to each other, the joint structure including:

a lower member configured to joint an upper portion of the right side panel and an upper portion of the left side panel to
each other;

an upper member provided above the lower member with a clearance kept from the lower member;
a front joint member configured to joint a front portion of the upper member and a front portion of the lower member to each
other; and

a rear joint member configured to joint a rear portion of the upper member and a rear portion of the lower member to each
other, wherein

the lower member includes:
an installation member extends between the upper portions of the right side panel and the left side panel to be welded to
the right side panel and to the left side panel; and

a plate member is overlapped with an upper surface of the installation member to be attached to the upper surface,
the front joint member and the rear joint member joint the plate member and the upper member to each other, and
the rear joint member is attached to a back surface of the installation member at a lower portion of the rear joint member.

US Pat. No. 9,216,764

VEHICLE STEERABLE BY MOVEMENT OF CENTER OF GRAVITY

KUBOTA CORPORATION, Osak...

1. A vehicle steerable by movement of a center of gravity, the vehicle comprising:
a mower unit;
at least one auxiliary wheel;
a left drive wheel driven by a left rotary driver;
a right drive wheel driven by a right rotary driver;
a steering stand comprising:
a steering step surface; and
a load detection module detecting a load distribution on the steering step surface of a driver arranged on the steering step
surface;

a gravity center position calculator calculating a position of the center of gravity of the driver on the steering step surface
based on a detection signal from the load detection module;

a travel controller having a first control mode and a second control mode;
the first control mode controlling rotary drive of the left rotary driver and the right rotary driver so as to achieve one
of:

forward travel based on the position of the center of gravity; and
turning based on the position of the center of gravity;
the second control mode controlling the rotary drive of the left rotary driver and the right rotary driver so as to achieve
one of:

forward travel based on the position of the center of gravity;
turning based on the position of the center of gravity; and
backward travel based on the position of the center of gravity; and
a driver input operation device providing the travel controller with a selection command to select one of the first control
mode and the second control mode based on an input operation of the driver,

wherein the driver input operation device is usable during mowing and while the mowing unit is operating, and
wherein the travel controller prevents backward travel unless the driver is gripping a grippable support.

US Pat. No. 9,386,449

DATA COMMUNICATION SYSTEM FOR WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A data communication system for a working machine, comprising:
a data communication device configured to obtain data relating to the working machine;
a mobile terminal configured to receive the data of the data communication device by wireless communication; and
a management server configured to output an authorization key for wireless communication between the data communication device
and the mobile terminal, wherein

the mobile terminal includes:
an information output logic configured to output, to the management server, a mobile terminal identification information and
a working machine identification information, the mobile terminal identification information identifying the mobile terminal,
the working machine identification information identifying the working machine; and

an authorization key output logic configured to output, to the data communication device, the authorization key outputted
from the management server,

the management server includes:
a user management database configured to register the mobile terminal identification information relating to the mobile terminal
and the working machine identification information relating to a sold working machine and to relate the mobile terminal identification
information and the working machine identification information to each other;

a user registration determination logic configured to determine whether or not the mobile terminal and the working machine
are registered to be related to each other on the basis of the mobile terminal identification information and the working
machine identification information each outputted from the mobile terminal and of the mobile terminal identification information
and the working machine identification information each stored in the user management database; and

an authorization information output logic configured to output the authorization key necessary for wireless communication
between the mobile terminal and the working machine when the user registration determination logic determines that the mobile
terminal and the working machine are registered to be related to each other, and

the data communication device includes
a communication authorization logic configured to authenticate the authorization key outputted from the mobile terminal with
an authorization key previously stored in the communication authorization logic to determine validation of the authorization
key outputted from the mobile terminal, and to authorize wireless communication between the data communication device and
the mobile terminal when determining validation of the authorization key outputted from the mobile terminal.

US Pat. No. 9,357,695

RIDING MOWER

KUBOTA CORPORATION, Osak...

1. A riding mower comprising:
a mower assembly supported on a vehicle body frame between pairs of left and right rear wheels and front wheels;
a steering assembly configured for operation by a driver;
a driver seat; and
a floor panel provided on the vehicle body frame and extending frontward from an area that includes the driver seat;
said floor panel comprising:
a main panel section located in front of the driver seat; and
left and right footrest sections each extending further frontward from the main panel section; and
a recessed portion arranged on at least one side edge of the floor panel, the recessed portion including a side edge dropoff
point that, in a top view, defines a shortest distance to a an imaginary front-back direction centerline of the vehicle body
in comparison to at least one of front and back ends of the at least one side edge of the floor panel.

US Pat. No. 9,382,926

OIL PASSAGE CHANGE-OVER VALVE

KUBOTA CORPORATION, Osak...

1. An oil passage change-over valve comprising:
a valve body configured to be attached to an attachment surface, having:
a first opening portion formed in one side of the valve body, the first opening portion being disposed to arrange an axis
of the first opening portion parallel to the attachment surface; and

a second opening portion and a third opening portion formed in another side of the valve body, the second opening portion
and the third opening portion being disposed, arranging an axis of the second opening portion and an axis of the third opening
portion parallel to the axis of the first opening portion and to the attachment surface,

the axis of the second opening portion being located closer to a side of a first surface than the axis of the third opening
portion, the first surface being one of two side surfaces of the valve body, the two side surfaces being spaced in a direction
parallel to the attachment surface and perpendicular to the axes,

the axis of the third opening portion being located closer to a side of a second surface than the axis of the second opening
portion, the second surface being the other one of the two side surfaces and being opposed to the first surface,

an end portion of the second opening portion, the end portion of the second opening portion being closer to the second surface,
being located closer to the side of the second surface than a first end portion of the first opening portion, the first end
portion of the first opening portion being closer to the first surface,

an end portion of the third opening portion, the end portion of the third opening portion being closer to the first surface,
being located closer to the side of the first surface than an second end portion of the first opening portion, the second
end portion of the first opening portion being closer to the second surface, the valve body internally including:

a first oil passage for connecting the valve hole with the first opening portion;
a second oil passage deviated by 120 degrees from the first oil passage for connecting the valve hole with the second opening
portion; and

a third oil passage deviated by 120 degrees from the first oil passage for connecting the valve hole with the third opening
portion;

a valve element rotatably provided in the valve hole of the valve body; and
a communicating oil passage formed in the valve element for alternately communicating the first opening portion with one of
the second opening portion and the third opening portion.

US Pat. No. 9,964,244

SEPARATION PREVENTING DEVICE OF FLUID PIPE, AND PIPE JOINT

COSMO KOKI CO., LTD., (J...

1. A separation preventing device of a fluid pipe that prevents separation of the fluid pipe in a pipe axis direction, the separation preventing device comprising:a main body member that is externally fitted to an outer peripheral surface of the fluid pipe and has a recess portion facing the outer peripheral surface;
a locking member that is housed in the recess portion in a tiltable manner and is able to bite into the outer peripheral surface of the fluid pipe; and
a pressing unit that is provided in the main body member and presses the locking member,
the locking member has a plurality of wedge portions in a front-back direction of a pipe axis of the fluid pipe, and an auxiliary wedge projection portion that regulates biting of a front wedge portion of the plurality of wedge portions into the fluid pipe, when the fluid pipe moves to a separation side in the pipe axis direction,
wherein the projection portion is provided between a front wedge portion and a rear wedge portion of the plurality of wedge portions.

US Pat. No. 9,810,356

SEPARATION PREVENTING DEVICE OF FLUID PIPE, AND PIPE JOINT

COSMO KOKI CO., LTD., (J...

1. A separation preventing device that prevents separation of a fluid pipe in a pipe axis direction, the separation preventing
device comprising:
a main body member that is externally fitted to an outer peripheral surface of the fluid pipe and has a recess portion facing
the outer peripheral surface;

a locking member that is housed in the recess portion in a tiltable manner and is able to bite into the outer peripheral surface
of the fluid pipe;

a pressing member that is provided in the main body member and presses the locking member so as to bite into the outer peripheral
surface of the fluid pipe; and

an interposition member interposed between the locking member and the pressing member,
wherein the pressing member is configured to press a center portion in the circumferential direction of the locking member;
the interposition member is equipped with a tapered surface coming into contact with an outer surface of the locking member,
and is housed in the recess portion in a state of having an acceptable movement and tilting value in the pipe axis direction
of the fluid pipe; and a gap portion which permits movement and tilting of the locking member is formed between an end surface
on a rear side of the center portion of the locking member and a side wall surface of the recess portion.

US Pat. No. 10,063,016

FUSE PROTECTED SOCKET HAVING ADDITIONAL ATTACHMENT POINTS

Kubota Corporation, Osak...

1. An electric connector to be incorporated in an electric circuit, the electric connector comprising:a socket connector;
a bar-like plug connector to be inserted/withdrawn to/from the socket connector; and
a fuse;
wherein when the plug connector is inserted to the socket connector, electric conduction is established in the electric circuit via the fuse; and
the fuse is attached to the socket connector; and
wherein the socket connector includes a positive electrode portion and a negative electrode portion that can be electrically conducted with the plug connector; and
the positive electrode portion is disposed on a far side in an inserting direction of the plug connector, and the negative electrode portion is disposed on a near side in the inserting direction.

US Pat. No. 9,789,872

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
an engine;
a transmission capable of converting power of the engine into forward travelling power or reverse travelling power and outputting
the converted power;

a travelling apparatus capable of being driven by the power output from the transmission;
a travelling body capable of travelling using the travelling apparatus;
an accelerator operation tool capable of changing a target rotational speed of the engine through an operation;
a travelling state determination unit capable of determining a travelling state of the travelling body; and
a control unit that, if it has been determined by the travelling state determination unit that the travelling body is in a
reverse travelling state, restricts an upper limit value of the target rotational speed of the engine that is based on an
operation on the accelerator operation tool to be a lower value than in a case where it has been determined by the travelling
state determination unit that the travelling body is in a forward travelling state;

wherein, for a same travelling speed in the forward travelling state and the reverse travelling state, a ratio of a reduction
ratio when in the reverse travelling state to a smallest reduction ratio when in the forward travelling state is set to be
substantially equal to a ratio of the upper limit value of the target rotational speed of the engine when in the reverse travelling
state to the upper limit value of the target rotational speed of the engine when in the forward travelling state at the smallest
reduction ratio.

US Pat. No. 9,541,943

OPERATION LEVER AND GRIP

KUBOTA CORPORATION, Osak...

1. An operation lever for operation of a blade of a dozer unit disposed on a construction machine, the blade being operated
in an up and down action, in an angle action and in a tilting action, the angle action moving the blade to differentiate back
and forth positions of longitudinal ends of the blade, the tilting action moving the blade to differentiate vertical positions
of longitudinal ends of the blade, comprising:
a lever shaft including: an upper part extending upward, the upper part being located above a center portion of the lever
shaft relative to a longitudinal direction of the lever shaft, the lever shaft being configured to be operable back and forth,
corresponding to the up and down action of the blade; and

a grip provided on the upper part of the lever shaft, the grip including:
a grip core member attached to the lever shaft, the grip core member including:
a first stopper and a second stopper; and
a grip main body configured to be rotated about a shaft center of the lever shaft and being supported by the grip core member,
thereby being capable of rotating in a clockwise direction and in a counterclockwise direction from a neutral position by
a predetermined rotation angle, such that rotation of the grip main body is configured to cause movement of the blade in the
angle action and in the tilting action, wherein

the first stopper is configured to restrict the rotation of the grip main body in the counterclockwise direction from the
neutral position by a first predetermined rotation angle, and

the second stopper is configured to restrict the rotation of the grip main body in the clockwise direction from the neutral
position by a second predetermined rotation angle, and

wherein the second predetermined rotation angle is different from the first predetermined rotation angle.

US Pat. No. 9,506,552

WORK VEHICLE WITH IMPROVED TRANSMISSION HYDRAULICS

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a transmission system decreasing or changing a speed of a driving force from an engine and outputting the driving force;
a transmission case housing the transmission system;
a hydraulic circuit supplying oil collected in the transmission case to hydraulic equipment;
a storage space housing a minimum speed transmission portion of the transmission system being defined at least by a dividing
wall of the transmission case, and

a suction intake oil passage of the hydraulic circuit being located at a bottom portion of the storage space,
wherein the dividing wall comprises at least one bearing holder.

US Pat. No. 9,857,296

OPTICAL GRAIN EVALUATION DEVICE AND COMBINE HARVESTER PROVIDED WITH OPTICAL GRAIN EVALUATION DEVICE

Kubota Corporation, Osak...

1. An optical grain evaluation device comprising:
a light source;
a light-projecting part through which light from the light source is projected to stored grain;
a light-receiving part on which light that has been projected to the grain through the light-projecting part and transmitted
through the grain is incident, the light-receiving part being lined up with the light-projecting part at a distance;

a grain evaluation unit configured to evaluate the grain based on information relating to the light received by the light-receiving
part;

a shielding part that separates an area between the light source and the light-projecting part from an area between the light-receiving
part and the grain evaluation unit, so as to prevent light from the light-projecting part from directly entering the light-receiving
part; and

a shutter that is provided separate from the shielding part so as to be switchable between an open state in which the light
from the light source is allowed to pass through the light-projecting part, and a closed state in which the light is prevented
from passing through the light-projecting part,

wherein the area between the light source and the light-projecting part, and the area between the light-receiving part and
the grain evaluation unit are configured, over the entirety of the areas, as air transmission areas in which light is transmitted
through air.

US Pat. No. 9,670,939

OPERATION CONTROL SYSTEM

KUBOTA CORPORATION, Osak...

1. An operation control system for a work apparatus arranged on or mounted to a work vehicle comprising:
a controller controlling the work apparatus;
at least a first hydraulic valve and at least a second hydraulic valve configured to control hydraulic pressure supply to
the work apparatus;

an operation unit providing an operation input signal to the controller;
the operation unit comprising at least a first mounting base arranged adjacent at least a second mounting base;
the first mounting base being configured to receive a first single-operation tool;
the second mounting base being configured to receive a second single-operation tool; and
a multi-operation tool mountable to both the first mounting base and the second mounting base.

US Pat. No. 9,127,627

INTAKE DEVICE OF A VERTICAL MULTICYLINDER ENGINE

KUBOTA Corporation, Osak...

1. An intake device of a vertical multi-cylinder engine, connectable to an intake port of a cylinder head of the engine, the
intake device comprising:
an intake manifold having:
a collector portion extending in a front-to-rear direction, and having a front end and a back end,
an intake air introducing portion disposed centrally in the front-to-rear direction of the collector portion, and
a first branch portion extending from the front end of the collector portion and a second branch portion extending from the
back end of the collector portion, the first and second branch portions being configured to connect to the intake port,

a throttle body located at an upper portion of the intake air introducing portion, the throttle body having a throttle passage
oriented in an up-down direction,

a butterfly-type throttle valve located in the throttle passage for throttling an air intake stream downward, the throttle
valve being pivotable about a valve shaft attached to the throttle passage and oriented in the front-to-rear direction, and

a blow-by gas inlet portion disposed on a downstream side of the air intake stream and downstream from the throttle valve,
in a peripheral wall of the throttle passage on a side toward which the lower end portion of the throttle valve is directed
when in a half-open position.

US Pat. No. 9,540,713

PIPE PROVIDED WITH CORROSION PREVENTION LAYER ON THE OUTSIDE SURFACE

Kubota Corporation, Osak...

1. A cast-iron pipe provided with a corrosion prevention layer on an outside surface thereof by spraying, wherein
the corrosion prevention layer comprises a Zn—Sn—Mg alloy sprayed coating comprising Sn in a content of more than 10% by mass
and less than 40% by mass, Mg in a content of more than 0.05% by mass and less than 5% by mass and a balanced composed of
Zn,

at least a portion of the Zn in the sprayed coating of the corrosion prevention layer is distributed independent of the Zn—Sn—Mg
alloy in the sprayed coating of the corrosion prevention layer.

US Pat. No. 9,518,490

EXHAUST GAS PROCESSING DEVICE FOR ENGINE

KUBOTA Corporation, Osak...

1. An exhaust gas processing device for an engine comprising:
a combustible gas producer, a combustion catalyst, an exhaust processing unit, and a control unit, the exhaust gas processing
device being configured such that a combustion catalyst burning gas is produced by the combustible gas producer under the
control of the control unit, the resultant combustion catalyst burning gas is mixed with an exhaust gas passing an engine
exhaust gas channel and catalytically burned with the combustion catalyst, and then, the exhaust gas whose temperature is
increased by catalyst combustion is supplied to the exhaust processing unit,

wherein the control unit allows the combustible gas producer to produce a combustion catalyst warming gas before the combustion
catalyst burning gas is produced, the resultant combustion catalyst warming gas is mixed with the exhaust gas passing the
engine exhaust gas channel and ignited by an igniter disposed upstream of the combustion catalyst that is thus warmed with
the exhaust gas whose temperature is increased by flame combustion;

the combustion catalyst burning gas is produced in the case where a warming end condition for the combustion catalyst is established;
and

the establishment of the warming end condition for the combustion catalyst signifies the establishment of either one of a
first condition or a second condition: the first condition in which an inlet temperature of the combustion catalyst is equal
to or higher than an activation requirement temperature of the combustion catalyst, and further, an outlet temperature of
the combustion catalyst is equal to or higher than an activation confirmation temperature of the combustion catalyst in excess
of the inlet temperature of the combustion catalyst; and the second condition in which the outlet temperature of the combustion
catalyst exceeds a warming confirmation temperature of the combustion catalyst that is set to be higher as an engine speed
is lower, for a predetermined period of time.

US Pat. No. 9,481,223

CABIN FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A cabin for a work vehicle having an air-conditioning duct (15) extending through a roof (7), the cabin comprising:
an outer roof (13) and an inner roof (14) defining a space (a) therebetween;

an ambient air feed opening (13C) and an ambient air intake opening (13B) that are defined in the outer roof (13), the ambient air intake opening (13B) drawing in ambient air toward the ambient air feed opening (13C);

a circulation opening (14A) defined in the inner roof (14) for drawing in air within the cabin;

a driver's seat (12) positioned below the inner roof (14);

an air conditioning unit (A) located rearwardly of the driver's seat (12);

a right front vertical frame (2) and a left front vertical frame (2);

a right rear vertical frame (2) and a left rear vertical frame (2); and

an annular upper frame (6) extending over respective upper ends of the right front vertical frame (2), the left front vertical frame (2), the right rear vertical frame (2) and the left rear vertical frame (2), the annular upper frame (6) including:

a front transverse frame portion (6E) extending between the right front vertical frame (2) and the left front vertical frame (2);

a right fore-and-aft frame portion (6A) extending over the respective upper ends of the right front vertical frame (2) and the right rear vertical frame (2);

a left fore-and-aft frame portion (6A) extending over the respective upper ends of the left front vertical frame (2) and the left rear vertical frame (2); and

a rear transverse frame portion (6B) extending between the respective upper ends of the right rear vertical frame (2) and the left rear vertical frame (2), the rear transverse frame portion (6B) projecting rearwardly from the right rear vertical frame (2) and the left rear vertical frame (2);

wherein the air conditioning unit (A) is housed within the space (a);
wherein the rear transverse frame portion (6B) has a U-letter form as seen from above, and the air conditioning unit (A) is arranged inside the U-letter form of the rear
transverse frame portion (6B) and rearwardly of the driver's seat (12);

wherein the air-conditioning duct (15) has a blow-off opening (15a) for blowing off conditioned air arranged forwardly of the driver's seat (12);

wherein each of the right front vertical frame (2) and the left front vertical frame (2) is curved to project forwardly relative to a vehicle body, and the respective upper ends of the right front vertical frame
(2) and the left front vertical frame (2) are positioned rearwardly of respective lower ends of the right front vertical frame (2) and the left front vertical frame (2);

wherein the front transverse frame portion (6E) is curved to project upward relative to the vehicle body such that a center position of the front transverse frame portion
(6E) is located at a higher level than the respective upper end of the right front vertical frame (2) and the left front vertical frame (2); and

wherein a windshield (25) of the cabin is surrounded by the right front vertical frame (2), the left front vertical frame (2) and the front transverse frame portion (6E).

US Pat. No. 9,476,334

WORKING VEHICLE

KUBOTA CORPORATION, Osak...

1. A working vehicle comprising:
a vehicle frame;
a mower unit coupled to the vehicle frame;
an engine having a head cover;
a cooling fan provided on a side of the engine to blow air to the engine;
a muffler main body provided on an opposite side of the engine in a position lower than an upper surface of the head cover
of the engine;

an exhaust pipe having a portion exposed in a position higher than the upper surface of the head cover of the engine and facing
an air blowing path of the cooling fan to discharge exhaust from the muffler main body;

a spacing gap arranged within an upstream end of the exhaust pipe; and
said spacing gap being located at a position higher than:
the muffler main body; and
the upper surface of the head cover of the engine,
wherein the working vehicle is a mower vehicle and the engine is at least one of oriented along a front and back direction
of the mower vehicle and/or arranged at a rear of the mower vehicle.

US Pat. No. 9,458,753

DIESEL ENGINE WITH REDUCED PARTICULATE MATERIAL ACCUMULATION AND RELATED METHOD

KUBOTA Corporation, Osak...

1. A diesel engine comprising:
a control unit operatively connected to and programmed to control a DOC, a DPF, a PM accumulation amount estimating device
of the DPF, a DPF regenerating device, a DOC inlet exhaust gas temperature detector, an intake throttle device, an air intake
amount detector and a load detector,

wherein when a PM accumulation estimate value of the DPF reaches a predetermined value (P) and DOC inlet exhaust gas temperature
reaches a predetermined value (T0), then a DPF regenerating processing is started, unburned fuel is mixed into exhaust gas
in the DPF regenerating processing by the DPF regenerating device under control of the control unit, temperature of exhaust
gas rises by catalytic combustion at the DOC of the unburned fuel, PM accumulated on the DPF is burned and removed and the
DPF is regenerated,

wherein if the PM accumulation estimate value of the DPF reaches a predetermined value (P) and the DOC inlet exhaust gas temperature
does not reach the predetermined value (T0), then air intake amount feedback control is carried out by the control unit, in
the air intake amount feedback control, a target value of DPF regenerating intake throttling is set to a predetermined air
intake amount (V), and

when the DOC inlet exhaust gas temperature reaches the predetermined value (T0) by the DPF regenerating intake throttling,
the DPF regenerating processing is started, and

when the DPF regenerating processing is not started even when elapsed time reaches a predetermined value (t) after the air
intake amount feedback control is started in a state where the DOC inlet exhaust gas temperature does not reach the predetermined
value (T0), then the air intake amount feedback control is changed to exhaust gas temperature feedback control by the control
unit, in the exhaust gas temperature feedback control, a target value of DPF regenerating intake throttling is changed to
the predetermined DOC inlet exhaust gas temperature (T0) by the control unit, and

when the DOC inlet exhaust gas temperature reaches the predetermined value (T0) by the DPF regenerating intake throttling,
the DPF regenerating processing is started, and when application of a load exceeding a predetermined amount is detected before
the DOC inlet exhaust gas temperature reaches the predetermined value (T0), the exhaust gas temperature feedback control is
returned to the air intake amount feedback control by the control unit.

US Pat. No. 9,416,701

WORK VEHICLE HAVING EXHAUST APPARATUS

Kubota Corporation, Osak...

1. A work vehicle comprising:
a motor section positioned forwardly of a driver's section in a vehicle body; and
an exhaust apparatus including
an exhaust gas purifying device mounted on the motor section such that the exhaust gas purifying device is disposed in a portion
of the motor section rearwardly of the vehicle body, the exhaust gas purifying device being aligned with a direction of a
width of the vehicle body and configured to purify exhaust gas of an engine,

an exhaust pipe, through which the exhaust gas discharged from the exhaust gas purifying device flows, the exhaust pipe having
an upstream end portion thereof in a gas flowing direction connected to a rear side of the exhaust gas purifying device, and
a downstream end portion thereof in the gas flowing direction disposed forwardly of the exhaust gas purifying device, and
the exhaust pipe comprising: a first extending portion extending rearward from the rear side of the exhaust gas purifying
device; a second extending portion bent from a rear end portion of the first extending portion in an L-letter shape and extending
therefrom in the direction of the width of the vehicle body; and a third extending portion bent from an end portion of the
second extending portion remote from the first extending portion and extending forward therefrom, and

a mixing exhaust pipe having a discharge opening and formed as a tube larger than the exhaust pipe in diameter with overlapping
a distal end portion of the exhaust pipe in a radial direction, the mixing exhaust pipe drawing ambient air by the exhaust
gas emitted from the exhaust pipe, mixing the exhaust gas with drawn ambient air, and discharging the mixed gas to the outside
from the discharge opening, the mixing exhaust pipe being arranged in a lower side position of the motor section on one side
of the direction of the width of the vehicle body with its axis extending along a longitudinal direction of the vehicle body
and with the exhaust gas being discharged toward the front of the vehicle body, and the exhaust pipe being connected to an
end portion of the exhaust gas purifying device on the other side of the direction of the width of the vehicle body to extend
toward the one side of the direction of the width of the vehicle body and overlapping the mixing exhaust pipe in the radial
direction.

US Pat. No. 9,353,770

HYDRAULIC SYSTEM FOR A WORK VEHICLE

Kubota Corporation, Osak...

1. A hydraulic system for a work vehicle, comprising:
a variable displacement pump operable with drive power form an engine;
an actuator for regulating a discharge rate of the variable displacement pump; a preferential flow-dividing valve for supplying
a fixed amount of oil discharged from the variable displacement pump preferentially to a preferential hydraulic oil section
and supplying a surplus oil flow from the pump to a non-preferential hydraulic oil section;

a plurality of electromagnetic proportional control valves provided in the non-preferential hydraulic oil section for controlling
oil flows relative to a plurality of hydraulically operated devices included in the non-preferential hydraulic oil section,
the plurality of electromagnetic proportional control valves including a high priority electromagnetic proportional control
valve and a low priority electromagnetic proportional control valve;

a second preferential flow-dividing valve provided in the non-preferential hydraulic oil section for supplying a preferential
oil flow to the high priority electromagnetic proportional control valve, and supplying a surplus oil flow of the preferential
oil to the low priority electromagnetic proportional control valve;

a necessary flow rate calculating module for directly calculating a necessary oil flow rate in each of the preferential hydraulic
oil section and the non-preferential hydraulic oil section based on a preferential oil flow rate of the preferential flow-dividing
valve supplied oil to the preferential hydraulic oil section and an amount of current distributed to each of the plurality
of electromagnetic proportional control valves in the non-preferential hydraulic oil section;

correlation data showing relationship among the discharge rate of the variable displacement pump, a rotational speed of the
engine and an operational amount of the actuator;

a target operational amount setting module for providing a control target operational amount of the actuator for obtaining
the necessary oil flow rate calculated at the necessary flow rate calculating module based on the necessary oil flow rate
calculated at the necessary flow rate calculating module, an output from a rotary sensor for detecting the rotational speed
of the engine, and the correlation data; and

an operation control module for controlling the actuator based on the control target operational amount.

US Pat. No. 9,181,679

WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a right travelling device;
a left travelling device;
a travelling machine body including the right travelling device and the left travelling device;
a rotating base installed on the travelling machine body;
an operation seat arranged on one of right and left sides of the rotating base;
a vehicle equipment arranged on the other one of the right and left sides of the rotating base;
an equipment cover provided openably and closably, the equipment cover being configured to cover the vehicle equipment; and
a lateral shaft configured to pivotally support a front lower portion of the equipment cover on the rotating base, the lateral
shaft including:

one end positioned on a side closer to the operation seat; and
the other end positioned on a side closer to a side portion of the rotating base, the one end positioning anteriorly to the
other end.

US Pat. No. 9,045,028

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a power unit;
an electric motor activated by electric power from the power unit;
a propelling transmission system for receiving drive power from the electric motor;
a cabin configured for receiving a driver that rides inside the cabin;
an air conditioner for adjusting air temperature in a interior of the cabin;
a roof portion provided at a top portion of the cabin, the roof portion having a roof interior space defined between a lower
bottom wall and an upper top wall,

wherein the roof interior space comprises:
a cooling space defined by a unit housing case for housing a case power unit, an air-intake duct for supplying air from outside
of the cabin to the unit housing case, and an air-discharge duct for feeding out air within the unit housing case to the outside
of the cabin;

a ventilation space for taking air from the outside of the cabin into the air conditioner when the air conditioner performs
ventilation in the interior of the cabin; and

a fan provided in the cooling space, the fan taking in air from the outside of the cabin and discharging air from the unit
housing case to the outside of the cabin through the air-discharge duct.

US Pat. No. 9,981,544

ELECTRIC WORK VEHICLE

Kubota Corporation, Osak...

1. An electric work vehicle comprising:a left motor that drives a left drive wheel;
a right motor that drives a right drive wheel;
a cooling liquid circulation flow path connected to the left motor and the right motor;
a radiator and a pump disposed on the cooling liquid circulation flow path; and
a cooling liquid distribution mechanism configured to, according to a travel state, adjust a ratio between a cooling liquid flow amount that flows from the pump to the left motor and a cooling liquid flow amount that flows from the pump to the right motor,
wherein the travel state is an inclination angle in a vehicle body transverse direction of a traveling vehicle body, and the cooling liquid distribution mechanism is a distribution valve that makes a cooling liquid flow amount to a motor that drives a drive wheel located on a lower side of an inclination greater than a cooling liquid flow amount to a motor that drives a drive wheel located on an upper side of an inclination.

US Pat. No. 9,849,854

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body frame;
a protection frame extending upwards from the vehicle body frame, the protection frame including left and right strut members
and an arch member extending between and detachable from the left and right strut members;

a support frame provided in the vehicle body frame and configured to support the protection frame to the vehicle body frame,
the support frame including a pair of left and right pipe-like supporting portions, each supporting portion being provided
under a laterally outward tilted orientation with an upper portion of the supporting member being positioned on a more laterally
outer side of a vehicle body and being configured to removably support the strut member; and

a connection tool configured to non-removably connect the left and right strut members to the left and right supporting portions.

US Pat. No. 9,659,112

PIPELINE STRUCTURE AND COMPUTER READABLE RECORDING MEDIUM HAVING RECORDED THEREON PROGRAM FOR PIPELINE STRUCTURE

KUBOTA CORPORATION, Osak...

1. A pipeline structure of a buried pipeline, comprising:
a first collar and a second collar spaced apart from each other; and
a plurality of pipes, said pipes being connected to one another by joints,
wherein:
an inter-collar pipeline is formed of said pipes disposed between said first collar and said second collar,
an extra-collar pipeline is formed of said pipes disposed exterior to said first collar and said second collar,
said inter-collar pipeline includes (i) at least one pipe with spigots at both opposing ends thereof and (ii) a first pipe
and a second pipe such that a spigot of said first pipe is inserted into a socked of said second pipe,

said extra-collar pipeline includes at least one pipe with a spigot at one end thereof, and
comparing said inter-collar pipeline and said extra-collar pipeline of the same length, a number of joints is larger in said
inter-collar pipeline than in said extra-collar pipeline.

US Pat. No. 9,516,808

GRASS MOWER

Kubota Corporation, Osak...

1. A grass mower comprising:
a vehicle body frame extending along a centerline of a vehicle body front/rear direction;
a front wheel unit having a left front wheel and a right front wheel which are mounted to the vehicle body frame;
a rear wheel unit having a left rear wheel and a right rear wheel which are mounted to the vehicle body frame; and
a mower unit disposed between the front wheel unit and the rear wheel unit downwardly of the vehicle body frame, the mower
unit including a rotary blade unit that has at least a left blade and a right blade which are disposed side by side in a vehicle
body left/right direction;

wherein the rotary blade unit is configured such that a tread-on track of the left front wheel as seen in the plane view is
overlapped with a rotation locus portion of the left blade from the front side to the rear side thereof and a tread-on track
of the right front wheel as seen in the plane view is overlapped with a rotation locus portion of the right blade from the
front side to the rear side thereof; and

wherein the left front wheel and the right front wheel have a center position that is equidistant from the left front wheel
and the right front wheel the center position being offset from the centerline of the vehicle body front/rear direction; and

a center of a running track of the left front wheel is confined within a width of the left rear wheel and a center of a running
track of the right front wheel is confined within a width of the right rear wheel.

US Pat. No. 9,951,684

SPARK-IGNITION ENGINE

KUBOTA Corporation, Osak...

1. A spark-ignition engine comprising: an engine cooling fan disposed in front of the engine; a flywheel disposed behind the engine; a cylinder head cover mounted to an upper side of a cylinder head; an intake manifold mounted to one side wall of the cylinder head; an exhaust manifold mounted to the other side wall of the cylinder head; a throttle body; a gas mixer; a gas regulator; and a gas relay pipe,wherein a collector portion of the intake manifold is supported to extend in a front-back direction on one side of the cylinder head cover, the throttle body is mounted to a back portion of the collector portion of the intake manifold, the gas mixer is mounted to a back portion of the throttle body above the flywheel,
the gas regulator is disposed on a side of the exhaust manifold above the flywheel and mounted to the cylinder head, and the gas relay pipe is supported to extend sideways between the gas regulator and the gas mixer behind the cylinder head cover.

US Pat. No. 9,815,364

WORK VEHICLE HAVING ENGINE MOUNTED THERETO

KUBOTA CORPORATION, Osak...

1. A work vehicle having an engine mounted thereto, comprising:
a vehicle body frame extending in a longitudinal direction of vehicle;
a seat supporting deck supported to the vehicle body frame via a suspension unit;
a driver's seat supported on an upward side of the seat supporting deck;
a fuel tank supportively connected to the seat supporting deck and being spaced from and located below the driver's seat,
said fuel tank being configured to supply fuel to the engine; and

a canister supportively connected to the seat supporting deck and located adjacent to the fuel tank,
wherein vibration of the vehicle body frame is not transmitted directly to the fuel tank and canister.

US Pat. No. 9,803,333

HYDRAULIC SYSTEM FOR WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A hydraulic system for a working machine, comprising:
a plurality of hydraulic actuators;
a control valve configured to control the hydraulic actuators;
a tank configured to store a hydraulic operation fluid;
a variable displacement pump configured to discharge the hydraulic operation fluid stored in the tank to supply the hydraulic
operation fluid to the hydraulic actuators;

a regulator configured to control the variable displacement pump;
a pilot pump configured to discharge a hydraulic pilot fluid;
a load sensing system configured to control a discharge pressure of the variable displacement pump with use of the regulator
to maintain a differential pressure to be a constant pressure, the differential pressure being obtained by subtracting a second
signal pressure from a first signal pressure that is the discharge pressure of the variable displacement pump, the second
signal pressure being the maximum one of the load pressures generated in the hydraulic actuators;

a signal tube provided extending from the control valve to the regulator, the signal tube being configured to send the second
signal pressure to the regulator;

a throttle provided on the signal tube; and
a warm-up circuit configured to supply the hydraulic pilot fluid to a downstream side of the throttle provided on the signal
tube.

US Pat. No. 9,731,760

TRAVELING VEHICLE

KUBOTA CORPORATION, Osak...

1. A traveling vehicle comprising:
a traveling machine body supported by a pair of left and right driving wheels;
a pair of left and right motors connected to the pair of left and right driving wheels, respectively, and configured to independently
drive the pair of left and right driving wheels, respectively;

a work device disposed in front of the traveling machine body, and connected to the traveling machine body;
a riding part disposed behind the traveling machine body, connected to the traveling machine body, and configured to enable
riding of a worker;

a weight shift detection sensor configured to detect a weight shift of the worker who is riding on the riding part; and
a controller configured to control operation of the pair of left and right motors based on a detection value by the weight
shift detection sensor.

US Pat. No. 9,639,998

GROUND WORK VEHICLE, GROUND WORK VEHICLE MANAGEMENT SYSTEM, AND GROUND WORK INFORMATION DISPLAY METHOD

Kubota Corporation, Osak...

1. A ground work vehicle configured to perform work using a work apparatus while traveling, the ground work vehicle comprising:
a travel information generation unit configured to, over time, generate travel information indicating a travel state;
a work information generation unit configured to, over time, generate work information indicating a work state of the work
apparatus;

a travel evaluation unit configured to, based on the travel information and the work information, divide traveling of the
ground work vehicle into non-work traveling and actual work traveling; and

a data visualization unit configured to generate visual data, according to which the result of the division performed by the
travel evaluation unit is made visible.

US Pat. No. 9,567,729

WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a motor having an output shaft, the output shaft protruding toward a back of a machine body;
an attachment surface disposed on a rear portion of the motor, the attachment surface facing backward; and
a mount member configured to support the motor, the mount member including:
a first support member supported by a first position and a second position disposed on the rear portion of the motor and having
an opposite attachment portion, the opposite attachment portion being attached opposite to the attachment surface;

an elastic member attached to the first support member; and
a second support member configured to support the elastic member between the first position and the second position.

US Pat. No. 9,487,149

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body;
an occupants' section provided in the vehicle body and having a driver's seat and a passenger's seat;
a storage space that is provided under the seats and opened upwards, the storage space having a first storage space section
disposed under the driver's seat and a second storage space section disposed under the passenger's seat, the first storage
space section and the second storage space section being immovable relative to the vehicle body along a front-rear direction
of the vehicle body; and

a rail member that slidably supports the driver's seat while allowing the driver's seat to be moved relative to the first
storage space section in the front-rear direction of the vehicle body, the rail member being supported by a vehicle body frame
to be pivotable about an axis extending along a lateral width direction of the vehicle body;

wherein the seats are supported to be pivotable about an axis extending along the lateral width direction of the vehicle body
and access to the first storage space section and the second storage space section is made possible by upwardly pivoting these
seats, the driver's seat being pivotable together with the rail member;

wherein the first storage space section has a front-rear length shorter than the front-rear length of the second storage space
section;

wherein the passenger's seat is non-slidable along the front-rear direction of the vehicle body; and
wherein a storage box defining the first storage space section and the second storage space section is provided between the
vehicle body and the seats.

US Pat. No. 9,164,513

WORK VEHICLE COORDINATING SYSTEM

Kubota Corporation, Osak...

1. A work vehicle coordinating system configured to carry out a ground work by a main work vehicle and an un-manned controlled
sub work vehicle that follows up the main work vehicle, the system comprising:
a main-vehicle position detection module detecting a position of the main work vehicle;
a sub-vehicle position detection module detecting a position of the sub work vehicle;
a main-vehicle traveling path calculation section calculating a traveling path of the main work vehicle from the position
of this main work vehicle;

a turning detection unit detecting a turn traveling of the main work vehicle in a turning area to shift from a first work
traveling mode to a second work traveling mode;

a work traveling target calculation section calculating a target traveling position at time of a work traveling of the sub
work vehicle, based on a ground working width of the main work vehicle, a ground working width of the sub work vehicle, a
work traveling path of the main work vehicle and a position of the sub work vehicle;

a turn traveling target calculation section calculating a turn traveling path of the sub work vehicle in the turning area
based on the ground working width of the main work vehicle, the ground working width of the sub work vehicle, a turn traveling
start position and a turn traveling end position of the main work vehicle and calculating also a turn traveling target position
of the sub work vehicle at the time of a turn traveling based on the turn traveling path; and

a steering control section for un-manned controlling the sub work vehicle based on the target traveling position.

US Pat. No. 10,111,382

MID-MOUNT RIDING GRASS MOWER WITH A MOWER UNIT COVER

Kubota Corporation, Osak...

1. A mid-mount riding grass mower comprising:a traveling vehicle body;
a mower unit liftably suspension-supported at a front/rear intermediate lower portion of the traveling vehicle body;
a belt transmission device attached to an upper portion of the mower unit; and
a cover unit that covers the belt transmission device;
wherein the mower unit includes a blade rotatable with a driven pulley of the belt transmission device, and a mower deck that covers the blade from the above;
the cover unit includes a lower cover extending upward from the mower deck so as to surround three sides of the belt transmission device, and right and left side covers detachably attached to right and left end portions of the traveling vehicle body;
the lower cover has an upper end disposed higher than an upper end of the belt transmission device, the lower cover having a vertical length for forming a maintenance space relative to the front/rear intermediate lower portion of the traveling vehicle body when the mower unit is located at its lower limit position; and
each of the right and left side covers has a vertical wall that overlaps respective outermost sides of the lower cover as seen in a right/left direction in a lifting range of the mower unit.

US Pat. No. 10,030,570

WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:a vehicle body frame;
an engine;
an engine mounting member having an engine mounting face, the engine mounting member being connected to the vehicle body frame;
an engine hood configured to cover the engine from above, a lower end of the engine hood and the vehicle body frame together forming a gap therebetween; and
an air deflector configured to change the direction of the cooling air current to guide cooling air flowing downwards along a side face of the engine toward the engine mounting face and to the gap.

US Pat. No. 9,943,023

LIFT CONTROL APPARATUS FOR GROUND WORK APPARATUS

KUBOTA CORPORATION, Osak...

1. A lift control apparatus for a ground work apparatus of a traveling work vehicle, comprising:a height sensor configured to generate a height detection signal indicative of an actual height position of the ground work apparatus;
an input operation device configured to accept an input of an upper limit position setting from an operator for the ground work apparatus;
an upper limit manager configured to set the upper limit position of the ground work apparatus based on an operation input signal from the input operation device; and
a setting prohibitor configured to set the upper limit position as the actual height position of the ground work apparatus, under a certain condition;
the setting prohibitor being further configured to determine that the certain condition occurs when the upper limit position being set based on the operation input signal is lower than the actual height position of the ground work apparatus, as detected by the height sensor.

US Pat. No. 9,725,090

SPEED CONTROL FOR WORKING VEHICLE

KUBOTA CORPORATION, Osak...

1. A speed control device in a traveling work vehicle, the speed control device changing a speed of rotational drive power
from an engine to drive vehicle wheels and comprising:
a speed change device;
a maximum speed definer defining a maximum speed of the traveling work vehicle;
a target speed calculator determining a target speed, based on operation movement or position of the speed change device;
a vehicle speed controller adjusting or changing at least one of:
engine revolutions; and/or
a speed change ratio;
a vehicle speed obtainer obtaining an actual speed of the traveling work vehicle;
a braking device that is different and distinct from the speed change device and that is configured to brake the traveling
work vehicle;

a forcible target speed modifier forcibly modifying the target speed to a lower speed based on operation or movement of the
braking device; and

a release operable to treat an operation of the speed change device as a trigger to cancel the target speed forcibly modified
by the forcible target speed modifier, and conform the target speed to the actual vehicle speed.

US Pat. No. 9,596,804

RIDING MOWER

KUBOTA CORPORATION, Osak...

1. A riding mower comprising:
a pair of left and right front frames extending lengthwise along the vehicle body;
a pair of left and right rear frames extending rearward from the front frames lengthwise along the vehicle body;
a rollover protective structure including a pair of left and right supporting columns;
a pair of left and right front wheels coupled to the front frames;
a pair of left and right rear wheels coupled to the rear frames;
an operating unit;
a drive unit mounted in an area of the rear frames;
at least one first coupling part coupling one front frame and one rear frame;
at least one second coupling part coupling the one front frame and one supporting column;
at least one third coupling part coupling the one supporting column and the one rear frame,
wherein said first, second and third coupling parts define portions of at least one structural element that is triangular
shaped or defines a triangular shaped opening and includes:

a portion on the one front frame extending to at least the first coupling part;
a portion on the one supporting column extending to at least the second coupling part; and
a portion on the one rear frame extending to at least the third coupling part.

US Pat. No. 9,561,789

HYBRID WORK VEHICLE

Kubota Corporation, Osak...

1. A hybrid work vehicle comprising:
an internal combustion engine for supplying driving force to a running device and a work implement via a transmission shaft;
a motor generator for assisting the internal combustion engine by outputting power to the transmission shaft;
a battery for receiving charging electricity from the motor generator and giving driving electricity to the motor generator;
a load information generation unit for generating load information indicating a rotational load received by the internal combustion
engine when in a constant-speed control mode for maintaining a constant number of revolutions of the internal combustion engine,
based on an input parameter; and

an assistance calculation unit for calculating an amount of assistance for the internal combustion engine by the motor generator
when in the constant-speed control mode, based on the load information.

US Pat. No. 9,521,806

FARM WORK MACHINE, FARM WORK MANAGEMENT METHOD, FARM WORK MANAGEMENT PROGRAM, AND RECORDING MEDIUM RECORDING THE FARM WORK MANAGEMENT PROGRAM

Kubota Corporation, Osak...

1. A farm work machine operable in a variety of work modes, comprising:
a communication unit that can read farm work information for a selected target farm work sector from a database of a management
center storing the farm work information for each farm work sector, with using a communication network;

a work mode setting unit that sets work modes;
a work mode comparison unit that effects comparison between a set work mode set by the work mode setting unit and a registered
work mode included in farm work information read from the database;

a display data generation unit that generates display data based on the farm work information and the result of the comparison
in order to display the farm work information read by the communication unit and result of the comparison effected by the
mode comparison unit on a display;

at least one sensor configured to acquire, during a farm work performed by the farm work machine, evaluation information related
to the farm work; and

a work evaluation information outputting unit for outputting the evaluation information of the farm work effected in the work
mode at the time of completion of the farm work,

wherein the display data generation unit generates display data based on the evaluation information to display contents of
the evaluation information on the display.

US Pat. No. 9,485,909

MOWER AND GRASS MOWING MACHINE INCLUDING THE SAME

KUBOTA CORPORATION, Osak...

1. A mower for discharging mowed grasses from a discharge port provided in a side part of a mower deck to an exterior of the
mower deck, the mower comprising:
a flexible guide member formed in a flat plate shape;
a coupling assembly attaching the guide member to the mower deck for pivotal movement in an up and down direction in relation
to the mower deck, the coupling assembly comprising a pivot frame fixed to the guide member and for movement with the guide
member during said pivotal movement;

the guide member being configured to assume the flat plate shape while fixed to the mower deck via the coupling assembly;
and

a fixing member for fixing the guide member to the mower deck in a state that the guide member is bent into a shape capable
of guiding the mowed grasses discharged from the discharge port, the fixing member being separate from both the pivot frame
and the guide member.

US Pat. No. 9,441,514

DIESEL ENGINE

Kubota Corporation, Osak...

1. A diesel engine comprising an engine body, a DPF case and an SCR catalyst case, a DPF accommodated in the DPF case and
an SCR catalyst accommodated in the SCR catalyst case, a DPF-side exhaust gas relay pipe and an SCR-side exhaust gas relay
pipe, the DPF-side exhaust gas relay pipe and the SCR-side exhaust gas relay pipe respectively including straight pipe portions,
wherein
the DPF case and the SCR catalyst case are mounted on the engine body and the DPF case and the SCR catalyst case are oriented
in a direction which extends along a crankshaft center axis,

the DPF case is supported by the engine body through an exhaust gas introducing pipe, and the SCR catalyst case is supported
by the DPF case through an exhaust gas relay pipe,

the exhaust gas relay pipe is placed between an exhaust gas discharge pipe of the DPF case and an exhaust gas introducing
pipe of the SCR catalyst case,

the straight pipe portion of the DPF-side exhaust gas relay pipe is placed along a peripheral wall of the DPF case in a direction
which extends along a longitudinal direction of the DPF case, and the straight pipe portion of the SCR-side exhaust gas relay
pipe is placed along a peripheral wall of the SCR catalyst case in a direction which extends along a longitudinal direction
of the SCR catalyst case,

when a width direction of the engine body is defined as a lateral direction, exhaust gas discharged from the DPF case and
urea aqueous solution injected from a urea aqueous solution injector are mixed with each other in the straight pipe portion
of the SCR-side exhaust gas relay pipe,

the DPF case and the SCR catalyst case are arranged side by side in a lateral direction and sandwiched between the straight
pipe portions of the DPF-side exhaust gas relay pipe and the SCR-side exhaust gas relay pipe and the straight pipe portions
are placed on opposite sides from each other in the lateral direction, the straight pipe portion of the SCR-side exhaust gas
relay pipe is arranged on an opposite side from the DPF case in the lateral direction, and the SCR catalyst case is sandwiched
between the straight pipe portion of the SCR-side exhaust gas relay pipe and the DPF case; and

when a direction of the crankshaft center axis is defined as a longitudinal direction and a flywheel housing is defined as
existing on a rear side, the exhaust gas discharge pipe of the DPF case rearwardly curves and extends from a peripheral wall
of a front end of the DPF case on a side opposite from the SCR catalyst case, the exhaust gas introducing pipe of the SCR
catalyst case rearwardly curves and extends from a peripheral wall of a front end of the SCR catalyst case on a side opposite
from the DPF case, the DPF-side exhaust gas relay pipe comprises the straight pipe portion and a curved pipe portion, the
straight pipe portion straightly extends rearward from an extending end of the exhaust gas discharge pipe of the DPF case,
the curved pipe portion laterally curves and extends from an extending end of the straight pipe portion toward the SCR catalyst
case, the SCR-side exhaust gas relay pipe comprises the straight pipe portion and a curved pipe portion, the curved pipe portion
forwardly curves and extends from an extending end of the curved pipe portion of the DPF-side exhaust gas relay pipe toward
the exhaust gas introducing pipe of the SCR catalyst case, and the straight pipe portion straightly extends forward from an
extending end of the curved pipe portion toward an extending end of the exhaust gas introducing pipe of the SCR catalyst case.

US Pat. No. 9,045,880

OPERATING MACHINE

KUBOTA CORPORATION, Osak...

1. An operating machine comprising:
right-side and left-side travel devices;
a hydraulic actuator for driving the left-side travel device;
a hydraulic actuator for driving the right-side travel device;
a front working device;
a hydraulic actuator for driving the front working device;
a variable displacement hydraulic pump for discharging pressure oil to be fed to each of the hydraulic actuators, the variable
displacement hydraulic pump being a split-flow-type and having a first discharge port P1 and a second discharge port P2 both
for discharging the pressure oil to each of the hydraulic actuators; and

a travel independent valve configured to be switchable between:
a merging position for merging the pressure oil from the first discharge port P1 of the hydraulic pump with the pressure oil
from the second discharge port P2 of the hydraulic pump to effect the supply of the pressure oil to the hydraulic actuators;
and

an independently feeding position for independently effecting the supply of the pressure oil from the first discharge port
P1 of the hydraulic pump to the hydraulic actuator of the right-side travel device and the supply of the pressure oil from
the second discharge port P2 to the hydraulic actuator of the left-side travel device,

the travel independent valve being switched to the merging position in a case of driving the front working device without
actuation of either of the right-side or the left-side travel devices, or

a case of driving each of the right-side and the left-side travel devices and the front working device concurrently, or
being switched to the independently feeding position in a case of driving each of the right-side and the left-side travel
devices without actuation of the front working device;

a load sensing system adapted to control a discharge flow rate of the variable displacement hydraulic pump based on a pressure
difference between:

a discharge pressure of the split-flow-type variable displacement hydraulic pump; and
a maximum load pressure that is a highest one of load pressures of the hydraulic actuators of the right-side and left-side
travel devices and the front working device in any one of a case where the travel independent valve is in the merging position
and in a case where the travel independent valve is in the independently feeding position.

US Pat. No. 10,071,924

DIFFUSION PIPE AND METHOD FOR CLEANING DIFFUSION PIPE

Kubota Corporation, Osak...

1. A diffusion pipe comprising:a membrane body made of a viscoelastic material and formed in a tubular shape having an inner surface and an outer surface, the membrane body being provided with a plurality of diffusion slits cutting therethrough between the outer surface and the inner surface; and
a tubular membrane support body that supports the membrane body from inside of the membrane body, the membrane support body having a plurality of through-holes passing through a tube wall, provided on an upper side and a lower side of the membrane support body,
wherein the plurality of through-holes include:
a first group of through-holes provided on the upper side of the membrane support body; and
a second group of through-holes provided on the lower side of membrane support body, the second group of through-holes being smaller in number and smaller in a total opening area than the first group of the through-holes.

US Pat. No. 10,030,362

CABIN OF WORKING MACHINE, WORKING MACHINE HAVING CABIN, AND METHOD FOR MANUFACTURING CABIN

KUBOTA CORPORATION, Osak...

1. A cabin comprising:a frame member forming an entrance opening, the frame member being disposed in front of an operator seat;
a roof arranged above the operator seat;
a first panel configured to be capable of being moved to a first position where the front panel closes the entrance opening and to a second position between the operator seat and the roof;
a lock member disposed on the first panel, the lock member being configured to be freely movable;
a holding member configured to be engaged to the lock member to hold the first panel at the second position;
a pressing member configured to press the lock member toward a direction opposite to a direction of engaging to the holding member; and
a second panel disposed on a side of the operator seat,
wherein the holding member is disposed on an upper portion of the front portion of the second panel.

US Pat. No. 9,895,966

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body frame;
an engine mounted to the vehicle body frame;
a cooling fan unit provided on one side of the engine;
a coolant fluid radiator provided on an opposite side of the cooling fan unit;
a cooling unit comprising at least a first cooler provided on a side of the coolant fluid radiator opposite a side facing
the cooling fan unit; and

a link mechanism connected to the cooling unit and being structured and arranged to allow a distance between the cooling unit
and the coolant fluid radiator to be changed;

the link mechanism comprising a four-link mechanism that comprises a left upper link member, a right upper link member, a
left lower link member, and a right lower link member;

the left upper link member being pivotally connected at a first support point on an upper portion of the coolant fluid radiator
and being pivotally connected at a second support point of the first cooler;

the right upper link member being pivotally connected at a third support point on the upper portion of the cooling fluid radiator
and being pivotally connected at a fourth support point of the first cooler;

the left lower link member being pivotally connected at a fifth support point on the upper portion of the cooling fluid radiator
and being pivotally connected at a sixth support point of the first cooler; and

the right lower link member being pivotally connected at a seventh support point on the upper portion of the coolant fluid
radiator and being pivotally connected at an eighth support point of the first cooler.

US Pat. No. 9,746,076

SPEED DATA DISPLAY SYSTEM FOR A WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A speed change display control device for a traveling work vehicle comprising:
a main speed change device switching between speed change stages without interrupting transmission of drive power;
an auxiliary speed change device switching between speed change stages accompanied by an interruption in the transmission
of drive power;

a speed change controller outputting a speed change control command to the main speed change device and the auxiliary speed
change device and creating a vehicle speed change ratio with combinations of main speed change stages of the main speed change
device and auxiliary speed change stages of the auxiliary speed change device; and

the speed change controller comprising a display screen generator generating at least a first display screen and a second
display screen,

wherein the first display screen comprises:
an auxiliary speed change stage display area displaying a grouping of the auxiliary speed change stages;
a main speed change stage display area displaying a grouping of the main speed change stages assigned to the auxiliary speed
change stages; and

an engaged speed change stage display area displaying engaged speed change stages, and
wherein the second display screen comprises:
the auxiliary speed change stage display area;
the main speed change stage display area;
a lower limit selection area where the speed change stage defining a lower limit of the vehicle speed change ratio is selected;
an upper limit selection area where the speed change stage defining an upper limit of the vehicle speed change ratio is selected;
and

a selected speed change stage display area displaying the currently selected upper limit and lower limit speed change stages.

US Pat. No. 9,771,854

ENGINE WATER-COOLING DEVICE

KUBOTA Corporation, Osak...

1. An engine water-cooling device comprising: an intra-head cooling water jacket in a cylinder head; a thermostat; a bypass
passage; a radiator; and a cooling water pump, and
configured such that engine cooling water in the intra-head cooling water jacket flows back to the cooling water pump via
the bypass passage bypassing the radiator and when a water temperature of the engine cooling water detected by the thermostat
exceeds a predetermined value, the thermostat causes the engine cooling water in the intra-head cooling water jacket to flow
back to the cooling water pump via the radiator,

wherein the engine water-cooling device includes a thermostat housing that houses the thermostat, the thermostat housing is
mounted to a front wall of the cylinder head in one side portion in a width direction of the cylinder head, the cooling water
pump is mounted to a front wall of a cylinder block in a central portion in a width direction of the cylinder block,

the bypass passage includes an intra-head bypass passage in the cylinder head, and the intra-head bypass passage includes
a width-direction passage portion extending from a position behind the thermostat housing to a position behind and above the
cooling water pump.

US Pat. No. 9,699,962

MOWER UNIT

Kubota Corporation, Osak...

1. A mower unit detachably mounted between front wheels and rear wheels of a mid-mount grass mower, the mower unit comprising:
a blade cover including;
a top plate, and
a side plate extending from a circumferential edge of the top plate;
a pair of right and left ride-over deck units provided on the top plate, each ride-over deck unit including;
a support deck fixed to an upper face of the top plate,
a wheel guide member movable between a home position for storage in the support deck and a bridging position for bridging
between the support deck and a ground surface, and

a tethering member for tethering the support deck with the wheel guide member,
wherein the wheel guide member slides between and across the home position and the bridging position relative to the tethering
member.

US Pat. No. 9,670,883

ENGINE

KUBOTA Corporation, Osak...

1. An engine comprising an engine body, a DPF case, a high pressure EGR path, a supercharger and a low pressure EGR path,
in which the high pressure EGR path is interposed between an exhaust manifold and an intake manifold, an exhaust gas discharge
path extends from the DPF case, an intake pipe extends from an air compressor of the supercharger, the low pressure EGR path
is interposed between the exhaust gas discharge path of the DPF case and the intake pipe, and the low pressure EGR path is
provided with a low pressure EGR cooler, wherein the DPF case is installed in an engine body, and when an extending direction
of a crankshaft is defined as a longitudinal direction and a flywheel is defined as existing on a rear side and a width direction
of the engine body is defined as a lateral direction, the low pressure EGR path includes a rear path portion extending along
a rear side of the engine body, and a side path portion extending along a lateral side of the engine body on a side close
to the exhaust manifold, and
wherein the side path portion of the low pressure EGR path includes a downward convex bypass path portion which extends downward
and then upward, and an upper side terminal end of the downward convex bypass path portion is connected to the intake pipe.

US Pat. No. 9,668,404

MOWER WITH IMPROVED EXHAUST GAS COMPONENT COOLING

KUBOTA CORPORATION, Osak...

1. A mower comprising:
a vehicle frame extending in a front-back direction and being suspended on front wheels and rear wheels;
a mower unit mounted on or to the vehicle frame;
a driver's seat arranged on the vehicle frame;
a transmission arranged at least partially below the driver's seat;
a diesel engine located behind the transmission such that a bottom of the engine is positioned higher than a bottom of the
transmission;

an exhaust gas purification device arranged on a location behind the diesel engine and being configured to collect particulate
matter contained in exhaust gas discharged from the diesel engine;

an air cleaner arranged at a location in front of the exhaust gas purification device and above the diesel engine, wherein
the air cleaner includes an inflow pipe having an air intake opening; and

a radiator located in a radiator space in an area between the transmission and the diesel engine and having an upper end disposed
at a higher position than the air cleaner,

wherein the air intake opening of the inflow pipe reaches a top end of the radiator in the radiator space.

US Pat. No. 9,624,646

WORKING MACHINE AND METHOD FOR OPERATING WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a machine frame;
a cabin disposed on the machine frame;
a boom disposed on a side of the cabin;
an auxiliary attachment configured to be attached to and detached from a tip end portion of the boom;
an actuator configured to be activated by an operation fluid and to activate the auxiliary attachment;
a solenoid valve having a solenoid and being configured to control, based on a control signal outputted to the solenoid, a
pilot pressure being a pressure of a pilot fluid different from the operation fluid;

an auxiliary control valve configured to supply, based on the pilot pressure controlled by the solenoid valve, the operation
fluid to the actuator;

an operation member having a head portion;
a first switch being disposed on the head portion of the operation member and being operable to set an operation amount;
a second switch being disposed on the head portion of the operation member and being operable by being pressed, the second
switch being configured to automatically return to an initial position; and

a control unit configured to detect an operation of the first switch and an operation of the second switch, the control unit
further being configured to:

output a control signal based on the operation amount of the first switch,
continuously output the control signal to the solenoid of the solenoid valve when the operation of the first switch is detected
after detecting a release of the operation of the second switch under a state where the operation of the second switch is
detected, and

release a continuous mode by further performing the operation of the second switch under a state where the control unit is
in the continuous mode or to release the continuous mode by further performing the operation of the first switch under a state
where the actuator is activated in the continuous mode.

US Pat. No. 9,622,406

MID-MOUNT MOWER WITH POWER TRANSMISSION COUPLING

Kubota Corporation, Osak...

1. A mid-mount mower having a mower unit mounted under a vehicle body between front wheels and rear wheels, the mower comprising:
a lift link mechanism having a front link and a rear link provided in the vehicle body and spaced apart from each other in
a vehicle body front/rear direction;

a blade housing having an engaged portion engageable with an engaging portion provided in the vehicle body in association
with a movement of the vehicle body in the vehicle body front/rear direction;

a blade power transmission mechanism having a vehicle body side power transmission mechanism and a mower side power transmission
mechanism as units separate from each other and having also a power coupling mechanism for coupling an output shaft of the
vehicle body side power transmission mechanism with an input shaft of the mower side power transmission mechanism;

a coupling operational tool for establishing coupling between the input shaft and the output shaft by displacing the power
coupling mechanism in the vehicle body front/rear direction in a connection state for establishing engagement between the
engaging portion and the engaged portion; and

a first locking mechanism for locking the engaging portion and the engaged portions at the mutually engaged position;
wherein the first locking mechanism includes a locking engagement piece pivotally supported to the vehicle body and a locking
link for pivoting the locking engagement piece; and

the engaging portion and the engaged portion are locked when the locking engagement piece comes into engagement with the blade
housing in association with a pivotal movement of the locking engagement piece; and

wherein a displacement of the operational tool is transmitted to the locking link and the locking link converts this displacement
of the operational tool into a displacement of the locking engagement piece.

US Pat. No. 9,617,706

WORKING MACHINE WITH HYDRAULIC HOSE AND BOOM INTERMEDIATE PORTION

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a machine frame;
an operator seat disposed on the machine frame;
a boom disposed on each side of the operator seat, the boom including
a boom base portion disposed on a position corresponding to a rear portion of the machine frame,
a boom tip end portion arranged opposite the boom base portion, and
a boom intermediate portion disposed between the boom base portion and the boom tip end portion;
a boom cylinder having one end connected to the boom base portion an another end connected to the machine frame, the boom
cylinder being configured to swing the boom upward and downward; and

a hydraulic hose inserted into a rear side of the boom base portion and being disposed inside the boom intermediate portion,
the hydraulic hose being used for passage of an operation fluid.

US Pat. No. 9,616,736

ELECTRIC WORK VEHICLE

Kubota Corporation, Osak...

1. An electric work vehicle comprising:
a left rear wheel and a right rear wheel;
a vehicle frame supporting the left rear wheel and the right rear wheel;
a motor unit including a left motor and a right motor arranged side by side in a transverse direction of the vehicle and connected
to the vehicle frame;

a left transmission mechanism extending rearward in a fore-and-aft direction of the vehicle from a left side of the left motor
to transmit power from the left motor to the left rear wheel;

a right transmission mechanism extending rearward in the fore-and-aft direction of the vehicle from a right side of the right
motor to transmit power from the right motor to the right rear wheel;

a battery casing including an upper casing extending rearward of the left transmission mechanism and the right transmission
mechanism from a top surface of the motor unit, and a lower casing projecting downward from a bottom of a rear half of the
upper casing; and

a battery unit housed in the battery casing.

US Pat. No. 9,580,112

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body frame;
an engine and a radiator which are mounted on the vehicle body frame;
a hood switchable between a closed state for covering the engine and the radiator and an opened state for opening the engine
and the radiator to the outside;

an air cleaner having an intake pipe, the intake pipe extending through a space formed between the hood and the radiator when
the hood is under the closed state; and

an elastic body closing a gap around the intake pipe in said space when the hood is under the closed state;
wherein the elastic body includes:
a first elastic portion fixed to the radiator,
a second elastic portion disposed closer to the hood than the first elastic portion, the second elastic portion being switchable
between an engaged state in which the second elastic portion surrounds the intake pipe in cooperation with the first elastic
portion and an engagement released state in which the intake pipe is opened to the outside, and

an engaging portion for engaging and maintaining the second elastic portion under the engaged state;
wherein under the closed state of the hood, the engaging portion maintains the second elastic portion under the engaged state,
and the elastic body maintains the intake pipe at a predetermined position and closes said gap; and

wherein the first elastic portion and the second elastic portion are formed integrally with each other such that the elastic
body may be opened/closed.

US Pat. No. 9,572,298

RIDING MOWER WITH IMPROVED OPERATION VISIBILITY

KUBOTA CORPORATION, Osak...

1. A mower comprising:
a vehicle frame supported on front wheels and rear wheels;
a mower unit mounted to the vehicle frame;
a driver's seat arranged on the vehicle frame;
a left panel positioned on a left side of the driver's seat; and
a display unit arranged in an area of the left panel, wherein the display unit includes a screen,
wherein both a left front corner area of the mower unit and the display unit are visible to a driver seated on the driver
seat along a sight line extending from the driver to the left front corner area, and

wherein the screen of the display unit faces a top center portion of a seat back of the driver seat.

US Pat. No. 9,528,242

FRONT LOADER WITH SWING LINK MEMBER

KUBOTA CORPORATION, Osak...

1. A front loader, comprising:
a fixed bracket mountable to a vehicle body;
a boom mounted to the fixed bracket so as to be vertically swingable about a first horizontal pivot;
an implement mounted to a free-end part of the boom so as to be swingable about a second horizontal pivot; and
a mechanical posture maintaining mechanism for substantially maintaining a posture of the implement one of:
regardless of swing displacement of the boom; and/or
between different swing displacement positions of the boom,
wherein:
the boom has a curved shape in which a longitudinal central side of the boom is located above a center-to-center straight
line extending between a center of the first pivot and a center of the second pivot;

the posture maintaining mechanism includes:
a swing link member having two free-end parts and disposed in an area of a longitudinal center location of the boom so as
to be swingable about a third horizontal pivot;

a base-end link member extending between the fixed bracket and one of the free-end parts of the swing link member; and
a free-end link member that links the other free-end part of the swing link member to the implement,
the swing link member is configured so that one of the free-end parts serves as an inner free-end part located inward in a
boom bending direction from an upper surface of the boom, and the other free-end part serves as an outer free-end part located
outward in the boom bending direction from the upper surface of the boom, and

the boom includes:
a base-end boom part located on the first pivot side from a peak that is furthest from the center-to-center straight line;
and

a free-end boom part located on the second pivot side from the peak, and the free-end boom part being provided with the third
pivot;

a boom cylinder connected to the fixed bracket and to a point located behind the swing link member; and
the swing link member is configured so that a triangular shape area is formed by:
the third horizontal pivot;
a first coupling shaft coupling the free-end part to the base-end link member; and
a second coupling shaft coupling the other free-end part to the free-end link member.

US Pat. No. 9,499,045

WORKING VEHICLE

Kubota Corporation, Osak...

1. A working vehicle comprising:
a fuel tank;
a tank support member configured to receive and support the fuel tank from below; and
an inverse U-shaped hood support member provided in a standing manner in a state of spanning left and right of the fuel tank,
the hood support member including a rubber member that acts on an upper portion side of the fuel tank so as to hold the fuel
tank at a predetermined position on the tank support member,

wherein the rubber member includes left and right rubber members that act externally from above lateral sides of the fuel
tank and on left and right corner portions on the upper side of the fuel tank, and the fuel tank is held in a sandwiched manner
between the tank support member and the left and right rubber members due to the elasticity of the left and right rubber members.

US Pat. No. 9,347,351

EXHAUST TREATMENT DEVICE FOR DIESEL ENGINE

KUBOTA Corporation, Osak...

13. An exhaust treatment device for a diesel engine in which an exhaust flow divider is provided in an exhaust path, the exhaust
flow divider causes an exhaust to flow an EGR gas with PM unevenly distributed and a remaining discharged gas in a divided
manner, the EGR gas is recirculated to a combustion chamber, and the discharged gas is discharged to an atmospheric side,
wherein
a first corona discharge passage and a second corona discharge passage are provided at the exhaust flow divider, corona discharge
in the first corona discharge passage causes the PM, water vapor, and oxygen in the exhaust to generate electron attachment,
and electrostatic force causes the exhaust to flow the EGR gas with the electron-attached PM, water vapor, and oxygen unevenly
distributed and the remaining discharged gas in a divided manner, the discharged gas is guided to the second corona discharge
passage, corona discharge in the second corona discharge passage causes gas molecules in the discharged gas to dissociate,
and NOx in the discharged gas is reduced to N2,

a power supply relay box is mounted to a lower end part of the exhaust flow divider, a power supply box is mounted to a lateral
side of this power supply relay box, an electric insulator is provided on a lower end wall of the exhaust flow divider, a
conductor penetrating the electric insulator is introduced from the power supply relay box to the exhaust flow divider, and
a current is supplied from a power supply in the power supply box to the first-corona negative electrode of the first corona
discharge passage and the second-corona negative electrode of the second corona discharge passage in the exhaust flow divider
via the conductor, and

a clear air inlet and an inside air outlet are provided in the power supply box, the clean air inlet is communicated with
an air cleaner, the inside air outlet is communicated with an air compressor inlet of a supercharger, an inside air within
the power supply box is discharged from the inside air outlet with suction force of the supercharger, and a clean air of the
air cleaner is introduced into the power supply box from the clean air inlet.

US Pat. No. 10,099,547

WORK VEHICLE

Kubota Corporation, Osak...

1. A utility vehicle comprising:a vehicle body;
a seat mounted on the vehicle body;
an engine located behind the seat relative to a longitudinal direction of the vehicle body, the engine being provided with a cylinder head, and having an exhaust gas outlet port that is open in a front surface of the engine;
an exhaust pipe that extends forward from the exhaust gas outlet port, then curves, and extends rearward relative to the longitudinal direction; and
a heat insulation member that covers the front portion of the exhaust pipe behind the seat relative to the longitudinal direction, the heat insulation member including:
a front-side portion that covers a front side of the front portion of the exhaust pipe;
an upper-side portion that extends rearward from an upper end portion of the front-side portion and covers an upper side of the front portion of the exhaust pipe;
an extension portion that extends rearward from a rear end portion of the upper-side portion and covers an upper side of a front portion of the cylinder head; and
a framework that surrounds the engine, the framework including right and left longitudinal frames extending along the longitudinal direction in right and left upper regions relative to the engine, respectively, wherein the front-side portion of the heat insulation member is supported by and between respective front end portions of the right and left longitudinal frames.

US Pat. No. 10,038,176

ELECTRIC WORK VEHICLE

Kubota Corporation, Osak...

1. An electric work vehicle comprising:a plurality of battery mounting portions with each of the battery mounting portions comprising a main body contact such that the electric work vehicle comprises a plurality of main body contacts;
a plurality of battery packs each comprising a battery contact and detachably mounted to the battery mounting portions such that each of the battery contacts is electrically connected to one of the plurality of main body contacts;
a power feeding circuit to which each of the plurality of main body contacts is electrically connected in parallel;
a battery switch associated with each of the plurality of battery packs such that the electrical work vehicle comprises a plurality of battery switches, each of the plurality of battery switches having a first position that blocks flow of electric power from one of the plurality of battery packs to the power feeding circuit;
a switch operating portion for operating the plurality of battery switches;
a charged amount estimating portion for estimating a charged power of each of the plurality of battery packs mounted to each of the plurality of battery mounting portions;
an electric motor driven by power fed from at least one battery pack via the power feeding circuit; and
a driving wheel receiving power transmitted from the electric motor.

US Pat. No. 10,030,595

MULTIPURPOSE VEHICLE

Kubota Corporation, Osak...

1. A multipurpose vehicle comprising:an engine;
a fuel supply unit that supplies fuel to the engine;
a gear transmission device that changes speed of power from the engine through a shifting operation;
a coupling state detection sensor that detects a coupling state of the gear transmission device;
a determination unit configured to determine when the coupling state is an incomplete coupling state based on a detection signal from the coupling state detection sensor; and
a fuel supply control unit that executes a fuel cut to reduce a supply amount of the fuel from the fuel supply unit to the engine to a value less than a reference value based on receiving an indication from the determination unit that the coupling state is the incomplete coupling state.

US Pat. No. 10,029,571

ELECTRIC WORK VEHICLE

Kubota Corporation, Osak...

1. An electric work vehicle comprising:a vehicle body including a steering operation unit;
a left motor which supplies rotating power to a left drive wheel supporting the vehicle body to the ground;
a right motor which supplies rotating power to a right drive wheel supporting the vehicle body to the ground;
a motor control unit which provides drive signals to the left motor and the right motor independently of each other in response to an operation relative to the steering operation unit;
a yaw rate detector which detects an actual yaw rate of the vehicle body;
an arithmetic yaw rate computing unit which derives an arithmetic yaw rate based on a rotating speed of the left motor or the left drive wheel and a rotating speed of the right motor or the right drive wheel; and
a slip detection unit detecting occurrence of slipping based on the arithmetic yaw rate and an actual yaw rate, wherein the slip detection unit determines that the electric work vehicle travels on a sloping ground if the actual yaw rate exceeds the arithmetic yaw rate.

US Pat. No. 9,834,088

WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a front;
a rear opposite to the front in a front-rear direction of the work vehicle;
a lateral direction perpendicular to the front-rear direction;
an engine;
a hood to cover the engine;
a fuel tank to store fuel;
a fuel supply path via which the fuel stored in the fuel tank is to be supplied to the engine;
a separator provided in the fuel supply path to remove water in the fuel flowing through the fuel supply path, the separator
including a protruding portion protruding from the hood in the lateral direction; and

a front protector provided at a front side of the protruding portion of the separator to protect a front portion of the protruding
portion.

US Pat. No. 9,820,436

COMBINE FOR MEASURING THE WEIGHT OF GRAIN RETAINED IN A GRAIN TANK

Kubota Corporation, Osak...

1. A combine comprising:
a traveling device configured to support a traveling machine body;
a reaper unit configured to reap standing grain culms;
a threshing device configured to thresh the reaped grain culms;
a grain tank configured to retain the grain threshed by the threshing device;
a weight measurement unit configured to perform weight measurement on the grain retained in the grain tank;
a measurement instruction unit configured to output a weight measurement signal; and
an ECU comprising at least: i) a working state determination unit operatively connected to at least the weight measurement
unit and the measurement instruction unit; and ii) a weight measurement decision unit operatively connected to the working
state determination unit,

wherein the ECU is configured to:
perform, by the working state determination unit, working state determination for determining whether the combine is in a
working state or a non-working state, based on states of the traveling device, the reaper unit, and the threshing device determined
from a signal from at least one sensor operatively connected to the working state determination unit; and

instruct, by the weight measurement decision unit, the weight measurement unit to perform the weight measurement based on
the weight measurement signal,

wherein the working state determination unit of the ECU is configured to perform the working state determination when the
weight measurement signal is output from the measurement instruction unit, and if it is determined that the combine is in
the working state, the weight measurement decision unit of the ECU is configured not to instruct the weight measurement unit
to perform the weight measurement.

US Pat. No. 9,783,203

RIDING WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A riding mower comprising:
a vehicle body having a driver seat;
a driving wheel unit supporting the vehicle body;
a mower unit having a rotating blade that performs mowing work;
a working electric motor that drives the rotating blade;
an electric motor controller controlling an operation of the working electric motor in each of:
a steady mode; and
a power saving mode in which consumed power is less than the steady mode; and
a work load evaluator evaluating a load of the working electric motor,
wherein the electric motor controller operates the working electric motor in the power saving mode in a case where the load
of the working electric motor is evaluated by the work load evaluator and is determined to be lower than a threshold value,
and

wherein the riding mower operates with the following modes of operation:
the power saving mode is maintained for a predetermined time when the load of the working electric motor in lower than the
threshold value; and

the working electric motor is instantly switched to the steady mode when the load of the working electric motor is equal to
or greater than the threshold value.

US Pat. No. 9,686,912

LAWN MOWER HAVING A GRASS COLLECTION SYSTEM WITH AIR FLOW RECYCLE FOR STANDING UP GRASS FOR CUTTING

KUBOTA CORPORATION, Osak...

1. A ride-on lawn mower comprising:
a vehicle body;
a mower deck supported by or on the vehicle body, the mower deck comprising:
at least one rotationally driven blade configured to cut grass and generate an air flow capable of transporting the cut grass;
a cutting chamber housing the at least one blade; and
an ejection outlet adapted to allow the cut grass to be ejected;
at least one grass collection container collecting the cut grass ejected from the ejection outlet;
a first passage connecting the ejection outlet and the at least one grass collection container;
a second passage connecting the at least one grass collection container and at least one air chamber arranged inside the mower
deck and in a vicinity of the cutting chamber;

said air chamber being located peripherally outside said cutting chamber;
a vertical partition wall located inside the mower deck and separating the at least one air chamber and the cutting chamber;
said driven blade being located inside said vertical partition wall; and
said vertical partition wall comprising at least one of:
a curved section; and
an upper end extending to an upper inside surface of the mower deck,
wherein an air flow supplied to the at least one air chamber from the at least one grass collection container is supplied
to the grass collection container from the cutting chamber, and

wherein air from said supplied air flow is introduced into the at least one air chamber at a location peripheral to the cutting
chamber and functions to stand up the grass during grass cutting.

US Pat. No. 9,615,508

LAWN MOWER WITH RESPECTIVE BLADE SPEED DETECTION RELATIVE TO GROUND

KUBOTA CORPORATION, Osak...

1. A lawn mower comprising:
a work device having a plurality of blades for performing lawn mowing work, the plurality of blades being driven by rotational
power;

a power device configured to transmit rotational power to each of the plurality of blades, and be capable of optionally changing
the rotation number of the rotational power transmitted to each of the plurality of blades;

a blade speed detection unit configured to detect respective speeds of the plurality of blades to a ground;
a control device configured to perform energy-saving control during which the plurality of blades rotate at different speeds
to achieve reduced power consumption during movement of the lawn mower;

the power device includes a plurality of working motors provided to correspond to the plurality of blades respectively, and
configured to generate rotational power by using electric power; and

a traveling machine body connected to the work device, and capable of traveling on the ground, wherein
the blade speed detection unit includes:
a machine body speed detection unit configured to detect a speed and an angular speed of the traveling machine body to the
ground; and

a first calculation unit configured to calculate a speed of each of the plurality of blades to the ground based on the detected
speed and the detected angular speed of the traveling machine body.

US Pat. No. 9,534,551

WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a diesel engine configured to increase a speed by an accelerating operation;
an exhaust gas cleaning device having a filter for catching a particulate matter included in an exhaust gas exhausted from
the diesel engine;

a display device configured to display information related to the working machine; and
a control unit configured to:
control operation of the diesel engine to combust and remove the particulate matter deposited in the filter of the exhaust
gas cleaning device and configured to obtain a deposition amount of the particulate matter deposited in the filter of the
exhaust gas cleaning device,

perform an automatic regeneration for automatically increasing a temperature of the exhaust gas when the deposition amount
obtained by the control unit is equal to or more than a second deposition amount preliminarily determined, thereby automatically
combusting and removing the particulate matter deposited in the filter; and

make the display device display a warning when the deposition amount obtained by the control unit is equal to or more than
a first deposition amount during the automatic regeneration, the first deposition amount being preliminarily determined and
larger than the second deposition amount, the warning requesting the accelerating operation for increasing the speed of the
diesel engine.

US Pat. No. 9,526,199

WORK VEHICLE COORDINATING SYSTEM

Kubota Corporation, Osak...

1. A work vehicle coordinating system for carrying out a ground work in a central work land and a headland extending around
the central work land by an unmanned steerable sub work vehicle and a man-steered main work vehicle in cooperation with each
other, the system comprising:
a main vehicle position detection module for detecting a position of the main work vehicle;
a sub vehicle position detection module for detecting a position of the sub work vehicle;
a central work land path calculation section for calculating a central work land traveling path to be used by the sub work
vehicle in an unmanned steered work traveling in the central work land;

a first steering control section for unmanned-steering the sub work vehicle ahead of the main work vehicle based on the position
of the sub work vehicle detected by the sub vehicle position detection module and the central work land traveling path;

a headland path calculation section for calculating a headland traveling path to be used for unmanned steered traveling of
the sub work vehicle based on a traveling path of the main work vehicle in the headland; and

a second steering control section for unmanned-steering the sub work vehicle to follow the main work vehicle based on the
position of the sub work vehicle detected by the sub vehicle position detection section and the headland traveling path.

US Pat. No. 10,125,474

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle adapted to mount a front work implement operated under a forward facing posture and a rear work implement operated under a reverse facing posture, the work vehicle comprising:a one-hand control type forward/reverse operational unit including:
a first operational tool operable by one hand of a driver under the reverse facing posture; and
a second operational tool operable by the one hand engaged in operation of the first operational tool; and
a control device comprising an input/output interface operatively connected to the first operational tool and the second operational tool, the control device configured to:
input by the input/output interface a first operational signal outputted from the one-hand control type forward/reverse operational unit in response to an operation on the first operational tool, and a second operational signal outputted from the one-hand control type forward/reverse operational unit in response to an operation on the second operational tool; and
output by the input/output interface a traveling command for causing a vehicle body of the work vehicle to travel forwardly or reversely, based on the first operational signal and the second operational signal.

US Pat. No. 10,072,391

WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:a machine body;
an operator seat mounted on the machine body;
a boom configured to be swung upward and downward;
a boom base portion disposed on a position corresponding to a rear portion side of the machine body, the boom base portion including:
an inner side wall; and
an outer side wall disposed opposite to the inner side wall;
a lift link disposed on a rear portion of the boom base portion;
a first pivot shaft configured to pivotally support one end side of the lift link;
a second pivot shaft configured to pivotally support the other end side of the lift link;
a boom cylinder disposed in front of the lift link, the boom cylinder being configured to swing the boom upward and downward;
a third pivot shaft configured to pivotally support one end side of the boom cylinder; and
a fourth pivot shaft configured to pivotally support the other end side of the boom cylinder, wherein
one end side of the lift link is pivotally supported on the boom base portion by the first pivot shaft,
the other end side of the lift link is pivotally supported on the machine body by the second pivot shaft,
one end of the boom cylinder is inserted between the inner side wall and the outer side wall in front of the lift link and is pivotally supported on the boom base portion by the third pivot shaft,
the other end of the boom cylinder is pivotally supported on the machine body by the fourth pivot shaft below the lift link,
a width of the lift link opposed to the inner side wall and the outer side wall, the width corresponding to a portion in a predetermined area between one end of the lift link and the other end, is smaller than a clearance between a first surface of the inner side wall and a second surface of the outer side wall, the first surface being opposed to the second surface,
the portion in the predetermined area of the lift link and the one end side of the lift link pivotally supported on the boom base portion are inserted between the inner side wall and the outer side wall,
the machine body includes:
a pair of support walls, one of the support walls being arranged on one side of the other end side of the lift link, the other one of the support walls being arranged on the other side of the other end side of the lift link; and
a rear wall arranged behind the lift link, the rear wall being configured to join the pair of support walls to each other, and
the second pivot shaft is disposed between the pair of support walls,
the lift link includes
a back surface formed to have a curved shape protruding forward in a side view,
the back surface having
a center portion in a longitudinal direction positioned forward from an upper end of the rear wall,
the back surface bowing forward from an imaginary line drawn from the first pivotal shaft to the second pivotal shaft and being located forward from the upper end of the rear wall, and
the lift link has:
a main wall portion including:
an upper portion pivotally supported on the boom base portion by the first pivot shaft;
a lower portion pivotally supported on the machine body by the second pivot shaft; and
a protruding portion protruding rightward and leftward from a rear portion of the main wall portion and formed extending from the upper portion of the main wall portion to the lower portion of the main wall portion.

US Pat. No. 9,972,840

TITANIUM OXIDE COMPOUND, AND ELECTRODE AND LITHIUM ION SECONDARY BATTERY EACH MANUFACTURED USING SAME

KUBOTA CORPORATION, Osak...

6. A titanium oxide compound comprising bronze-type titanium oxide or titanium oxide mainly composed of bronze-type titanium oxide, wherein the titanium oxide contains 0.005 to 1.2 mass % inclusive of calcium and 0.15 to 0.2 mass % inclusive of silicon, or contains 0.005 to 0.1 mass % inclusive of calcium and 0.15 to 0.5 mass % inclusive of silicon.

US Pat. No. 9,945,464

TRANSMISSION APPARATUS

Kubota Corporation, Osak...

1. A transmission apparatus provided in a tractor and configured to transmit power outputted from an engine to a traveling device and an implement, the transmission apparatus comprising:a forward/reverse switching mechanism;
a hydrostatic stepless speed changer mechanism;
a planetary gear mechanism;
a rear wheel driving section; and
an implement clutch;
wherein the forward/reverse switching mechanism includes:
a forward/reverse switching mechanism input section configured to input power outputted from an engine output section included in the engine, and
a forward/reverse switching mechanism output section configured to switch over the power inputted to the forward/reverse switching mechanism input section to forward rotation or reverse rotation and to output the resultant power;
wherein the stepless speed changer mechanism includes:
a stepless speed changer mechanism input section configured to input the power outputted from the forward/reverse switching mechanism output section, and
a stepless speed changer mechanism output section configured to steplessly speed-change the power inputted to the stepless speed changer mechanism input section and to output the resultant power;
wherein the planetary gear mechanism includes:
a planetary gear mechanism first input section configured to input the power outputted from the stepless speed changer mechanism output section,
a planetary gear mechanism second input section configured to input the power outputted from the forward/reverse switching mechanism output section without the power being steplessly speed-changed by the stepless speed changer mechanism, and
a planetary gear mechanism output section configured to synthesize the powers inputted to the planetary gear mechanism first input section and the planetary gear mechanism second input section and to output the resultant synthesized power;
wherein the rear wheel driving section includes a rear wheel driving section input section configured to input the power outputted from the planetary gear mechanism output section; and
wherein the implement clutch includes:
an implement clutch input section configured to input the power outputted from the engine output section,
an implement clutch output section capable of outputting the power inputted to the implement clutch input section, and
wherein:
respective rotational axes of at least the engine output section, the forward/reverse switching mechanism input section, the planetary gear mechanism first input section, the planetary gear mechanism second input section, the planetary gear mechanism output section, and the implement clutch input section are disposed on a common first axis;
a second axis extending coaxially with a rotational axis of the rear wheel driving section input section is disposed below the first axis;
a third axis extending coaxially with a rotational axis of the stepless speed changer mechanism input section and
a fourth axis extending coaxially with a rotational axis of the stepless speed changer mechanism output section;
the third axis and the fourth axis are disposed below the first axis and above the second axis; and
the first axis, the second axis, the third axis and the fourth axis are disposed parallel with each other along a front/rear direction of the tractor in a side view of the tractor.

US Pat. No. 9,909,659

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
an engine;
a stepless speed changer device having a drive pulley receiving input of power of the engine, a driven pulley, and an endless
rotary body wound around and entrained between the the drive pulley and the driven pulley; and

an accommodating body having an accommodation space for accommodating the drive pulley, the driven pulley and the endless
rotary body;

wherein the accommodation space includes an air passage for causing air introduced from the outside to flow from the driven
pulley side to the drive pulley side to be eventually discharged to the outside,

wherein the accommodating body includes a first discharge opening capable of discharging air from the accommodation space
to the outside,

wherein the first discharge opening is disposed on a side opposite the driven pulley relative to the drive pulley,
wherein at a portion of the accommodating body located between the drive pulley and the driven pulley, there is provided a
second discharge opening separately of the first discharge opening, the second discharge opening being capable of discharging
air from the accommodation space to the outside, and

wherein the first discharge opening and the second discharge opening are provided parallel with each other between the accommodating
space and the outside of the accommodating space.

US Pat. No. 9,902,292

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a boarding section provided with a seat that allows an occupant to be seated thereon;
an engine located below the seat; and
a separator that separates a foot space for an occupant and the engine from each other along a front-rear direction of the
work vehicle, the foot space being formed forward of the engine, the separator being provided with a radiator part formed
therein, the radiator part being configured to radiate heat.

US Pat. No. 9,902,384

HYDRAULIC SYSTEM AND WORK MACHINE

KUBOTA CORPORATION, Osak...

1. A hydraulic system comprising:
a motor;
a brake to be actuated by an operation fluid to brake the motor when a hydraulic pressure is relieved and to release the braking
when the hydraulic pressure is applied;

a switch valve to be switched to a first position and to a second position, the first position being provided for relieving
the hydraulic pressure from the brake, the second position being provided for applying the hydraulic pressure to the brake;

a first fluid tube to connect the switch valve and the brake;
a second fluid tube connected to the first fluid tube at a connecting portion and communicated with a tank;
a first throttle disposed on the second fluid tube; and
a second throttle disposed on the first fluid tube and on an upstream side between the connecting portion and the switch valve.

US Pat. No. 9,897,185

SHIFT POWER TRANSMISSION APPARATUS AND TRAVEL POWER TRANSMISSION DEVICE

Kubota Corporation, Osak...

1. A shift power transmission apparatus comprising:
an input shaft receiving engine drive force;
a hydraulic continuously variable transmission driven by the input shaft;
a planetary power transmission section combining the drive force from the input shaft and an output from the hydraulic continuously
variable transmission for outputting the combined drive force therefrom; and

an output rotary member outputting power to a travel apparatus,
wherein a forward/reverse switching mechanism is provided to be switchable between a forward power transmission state for
converting the drive force from the input shaft into forward drive force to be transmitted to the planetary power transmission
section, and a reverse power transmission state for converting the drive force from the input shaft into reverse drive force
to be transmitted to the planetary power transmission section, and

the forward/reverse switching mechanism is further switchable to a neutral state in which power transmission between the input
shaft and the planetary power transmission section is cut off; and

wherein a clutch mechanism is provided for switching an interlocking state of a motor shaft of the hydraulic continuously
variable transmission to the output rotary member between an on-state and an off-state.

US Pat. No. 9,873,089

METHOD FOR LIFTING MEMBRANE SEPARATION APPARATUS

Kubota Corporation, Osak...

1. A method for lifting the membrane separation device immersed in liquid to be treated so as to obtain permeated liquid through
a filtration membrane, the method comprising:
injecting a gas into a predetermined region of the membrane separation device, thereby raising the membrane separation device
by a buoyancy generated by the injected gas through the liquid to be treated; and

engaging an engaging portion of a lifting apparatus with an engageable portion provided to an upper portion of the membrane
separation device, thereby lifting the membrane separation device,

wherein the predetermined region is a space forming a flow path for the permeated liquid having passed through the filtration
membrane.

US Pat. No. 9,872,431

WIND-GENERATING MOWER BLADE

Kubota Corporation, Osak...

9. A cutter blade for a mower which is driven to rotate about a vertical axis inside a housing, the cutter blade comprising:
a blade body, the blade body having a first longitudinal outer end, and a second longitudinal outer end opposite from the
first longitudinal outer end in a longitudinal direction of the blade body;

a first blade portion formed in the blade body associated with the first longitudinal outer end;
a second blade portion formed in the blade body associated with the second longitudinal outer end;
a first wind generating portion formed in the blade body on a side opposite from the first blade portion in a width direction
of the blade body, the first wind generating portion being formed by being raised and bent from the blade body over a predetermined
area from the first longitudinal outer end, a raised portion of the first wind generating portion defining a first boundary
between the first wind generating portion and a remaining portion of the blade body, the first boundary extending with an
inclination angle toward a rotation advance direction of the cutter blade relative to a longitudinal direction of the blade
body; and

a second wind generating portion formed in the blade body on a side opposite from the second blade portion in the width direction,
the second wind generating portion being formed by being raised and bent from the blade body over a predetermined area from
the second longitudinal outer end, a raised portion of the second wind generating portion defining a second boundary between
the second wind generating portion and a remaining portion of the blade body, the second boundary extending with an inclination
angle toward a rotation advance direction of the cutter blade relative to a longitudinal direction of the blade body;

wherein the first wind generating portion has a plurality of first recessed portions formed at the first longitudinal outer
end, and a plurality of first protruding portions formed between adjacent first recessed portions, the first recessed portions
and the first protruding portions extending continuous with each other via a smooth curved line in form of an arc, and one
of the first recessed portions is formed at a position on the first boundary; and

wherein the second wind generating portion has a plurality of second recessed portions formed at the second longitudinal outer
end, and a plurality of second protruding portions formed between adjacent second recessed portions, the second recessed portions
and the second protruding portions extending continuous with each other via a smooth curved line in form of an arc, and one
of the second recessed portions is formed at a position on the second boundary.

US Pat. No. 9,863,299

ENGINE EXHAUST TREATMENT DEVICE

KUBOTA Corporation, Osak...

1. An engine exhaust treatment device comprising:
a selective catalytic reduction (SCR) catalyst case housing an SCR catalyst;
an SCR exhaust inlet pipe; and
a urea water injector having a nozzle portion directed toward an inside of the SCR exhaust inlet pipe,
the SCR exhaust inlet pipe comprising:
an inner peripheral face,
an exhaust deflector mounted to the inner peripheral face on an exhaust upstream side from the urea water injector,
the exhaust deflector having an exhaust deflecting face extending from the inner peripheral face toward a downstream side
of the exhaust deflecting face, the exhaust deflecting face gradually separating from the inner peripheral face as the exhaust
deflecting face extends from an exhaust upstream side toward an exhaust downstream side, such that inversion of exhaust back
toward the upstream side is suppressed, thereby lowering exhaust back pressure and exhaust flowing toward the nozzle portion
of the urea water injector is deflected by the exhaust deflector and diverted from the nozzle portion.

US Pat. No. 9,849,779

UTILITY WORK VEHICLE

Kubota Corporation, Osak...

1. A utility work vehicle comprising:
a vehicle body;
right and left front wheels and right and left rear wheels supporting the vehicle body;
an engine section disposed at a rear portion of the vehicle body, the engine section including:
an engine having an output shaft oriented laterally along a right/left direction of the vehicle body;
a speed changer device having an input shaft oriented laterally along the right/left direction of the vehicle body, the speed
changer device being disposed rearwardly of the engine;

a belt type stepless speed changer device disposed on one right/left side of the engine and the speed changer device and configured
to transmit power from the engine to the speed changer device; and

a clutch disposed between the engine and the belt type stepless speed changer device;
wherein:
a space is formed downwardly of the clutch and extending within a length of the clutch between the engine and the belt type
stepless speed changer device;

a front wheel driving output shaft extends forwardly from the speed changer device at a portion downwardly of the speed changer
device and facing the space and is positioned outside of the space; and

a transmission shaft is connected to the front wheel driving output shaft coaxially therewith, the transmission shaft extending
forwardly through the space.

US Pat. No. 9,849,790

UTILITY VEHICLE

Kubota Corporation, Osak...

1. A utility vehicle comprising:
an electric motor configured to drive a propelling device;
a battery configured to supply electric power to the electric motor;
a temperature sensor configured to detect a temperature of the battery;
a discharge current setting unit configured to determine an upper limit discharge current value based on the detected temperature
detected by the temperature sensor; and

a control unit configured to regulate discharge current of the battery within the upper limit discharge current value determined
by the discharge current setting unit and to control driving of the electric motor;

wherein, while the detected temperature is falling from a first predetermined temperature to a second predetermined temperature
that is lower than the first predetermined temperature, the discharge current setting unit determines a constant upper limit
discharge current value as the upper limit discharge value,

while the detected temperature is falling from the second predetermined temperature to a third predetermined temperature that
is lower than the second predetermined temperature, the discharge current setting unit gradually increases the upper limit
discharge current value as the detected temperature falls, in which the lower the detected temperature is, the higher the
upper limit discharge current value is,

after the detected temperature falls to the third predetermined temperature, the discharge current setting unit determines
a maximum discharge current value of the battery as the upper limit discharge current value regardless of a further fall of
the detected temperature,

while the detected temperature is rising to a fourth predetermined temperature that is higher than the third predetermined
temperature and lower than the first predetermined temperature, the discharge current setting unit determines the maximum
discharge current value as the upper limit discharge current value, and

while the detected temperature is rising from the fourth predetermined temperature to the first predetermined temperature,
the discharge current setting unit gradually decreases the upper limit discharge current value as the detected temperature
rises, in which the higher the detected temperature is, the lower the upper limit discharge current value is.

US Pat. No. 9,839,174

WORK VEHICLE COOPERATION SYSTEM

Kubota Corporation, Osak...

1. A work vehicle cooperation system in which a master work vehicle and an unmanned-navigation type slave work vehicle that
emulates the master work vehicle perform ground work using a work implement, comprising:
a master position detection module that detects a master position, which is a position of the master work vehicle;
a slave position detection module that detects a slave position, which is a position of the slave work vehicle;
a master traveling track calculation unit that calculates a traveling track of the master work vehicle based on the master
position;

a slave traveling target calculation unit that calculates a target traveling position of the slave work vehicle based on the
traveling track of the master work vehicle;

a master parameter generation unit that generates a master work parameter relating to work executed by the master work vehicle
and a master driving parameter relating to driving executed by the master vehicle, the master work parameter and the master
driving parameter being linked with the master position;

a slave parameter generation unit that generates a slave work parameter and a slave driving parameter for the slave work vehicle
based on the master work parameter and the master driving parameter, the slave work/driving work parameter and the slave driving
parameter being linked with the corresponding target traveling position of the slave work vehicle; and

a navigation control unit that navigates the slave work vehicle in an unmanned manner based on the slave position, the target
traveling position, the slave work parameter, and the slave driving parameter.

US Pat. No. 9,816,411

BREATHER DEVICE FOR ENGINE

KUBOTA Corporation, Osak...

1. A breather device for an engine and comprising an oil filter chamber at a midpoint of a blow-by gas passing route and an
oil filter housed in the oil filter chamber,
wherein the oil filter chamber is partitioned with a partition wall into an upstream filter chamber and a downstream filter
chamber arranged in a front-back direction, the filter is formed by an upstream filter and a downstream filter, the upstream
filter is housed in the upstream filter chamber and the downstream filter is housed in the downstream filter chamber, respectively,
and a side gas expansion chamber is provided beside the oil filter chamber so that blow-by gas flows from the upstream filter
into the downstream filter through the side gas expansion chamber, and

wherein a side wall is provided between the oil filter chamber and the side gas expansion chamber and an upstream filter chamber
outlet and a downstream filter chamber inlet are open respectively in portions of the side wall close to the partition wall.

US Pat. No. 9,784,153

ENGINE

KUBOTA Corporation, Osak...

1. A vertical, straight two-cylinder engine comprising:
a cylinder head including combustion chamber roofs of the two adjacent cylinders,
a branched intake port for introducing intake air into the adjacent cylinders,
intake valve ports provided at branched ends of the intake port, an intake poppet valve provided in each intake valve port
and intake air being sucked through the intake valve ports along a wall between the cylinders,

one throttle body attached to the cylinder head,
one fuel injector attached to the one throttle body, and
a pair of crank pins having a crank pin angle set to 360 degrees,
wherein:
when viewed parallel to cylinder center axes, assuming a width direction of the cylinder head as a horizontal direction, a
port inlet of the intake port is disposed just beside a partition wall for partitioning the combustion chamber roofs of the
adjacent cylinders, port central axes of the intake port are disposed closer to the partition wall than a central virtual
line of each cylinder, the central virtual line passing corresponding one of the cylinder center axes and extending horizontally,

when viewed parallel to the cylinder center axes, the intake port comprises a pair of curved ports protrudingly curving in
a direction away from the partition wall, extending from the port inlet and terminating atop the cylinders, and a corresponding
pair of straight ports extending straight in a direction toward the centers of the combustion chamber roofs, from terminal
ends of the curved ports to the intake valve ports at the combustion chamber roofs,

when viewed parallel to the cylinder center axes, tangential virtual lines extending from endpoints of curved port central
axes along tangent lines of the endpoints pass the intake valve ports, and straight port central axes extending from the endpoints
of the curved port central axes are further away from the partition wall than the tangential virtual lines,

such that the intake air bent through the curved ports passes the straight ports, and is sucked through the intake valve ports
along the wall between the cylinders,

wherein fuel injected from the one fuel injector hits directly against a valve head of each intake valve at the same time,
and the fuel is injected from the fuel injector to the intake port within a crank angle range from preceding 40 degrees to
subsequent 30 degrees of a bottom dead center, partitioning an explosion stroke and an exhaust stroke of one cylinder and
partitioning an intake stroke and a compression stroke of another cylinder at the same time.

US Pat. No. 9,764,761

WORK VEHICLE HAVING ENGINE AND HYDRAULIC STEPLESS SPEED CHANGING DEVICE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
a frame unit extending along a vehicle body front-rear direction;
a first drive wheel mounted to the frame unit on one side in a vehicle body transverse direction;
a second drive wheel mounted to the frame unit on the other side in the vehicle body transverse direction;
a driver's seat supported to the frame unit;
a first hydraulic stepless speed changing device mounted to the frame unit on one side in the vehicle body transverse direction
and configured to transmit power to the first drive wheel;

a second hydraulic stepless speed changing device mounted to the frame unit on the other side in the vehicle body transverse
direction and configured to transmit power to the second drive wheel;

an engine mounted to the frame unit rearwardly of the driver's seat;
a battery mounted to the frame unit rearwardly of the driver's seat;
a fuel tank mounted to the frame unit downwardly of the driver's seat;
a hydraulic stepless speed changing device oil tank mounted to the frame unit on one side in the vehicle body transverse direction;
a first hydraulic passage connecting the hydraulic stepless speed changing device oil tank to the first hydraulic stepless
speed changing device;

a second hydraulic passage extending from one side to the other side of the frame unit in the vehicle body transverse direction,
thus connecting the hydraulic stepless speed changing device oil tank to the second hydraulic stepless speed changing device;

a cable harness extending from one side to the other side of the frame unit in the vehicle body transverse direction along
the second hydraulic passage; and

a bridge beam extending from one side to the other side of the frame unit in the vehicle body transverse direction between
the second hydraulic passage and an electric wiring.

US Pat. No. 9,725,018

SEAT DEVICE FOR A VEHICLE

KUBOTA CORPORATION, Osak...

1. A seat for a vehicle comprising:
a seat part that is generally upward-and-downward swingably supported and is capable of changing a posture thereof to a use
posture that allows sitting on the seat part and to a non-use posture that does not allow sitting on the seat part, wherein
the seat part has a front end and a rear end, and wherein in the non-use posture, the front end is arranged below the rear
end;

a support part that is generally upward-and-downward swingably supported and that is configured to support the seat part when
the seat part is in the use posture;

a guide part fixed to a bottom surface of the seat part and comprising:
a free groove that slidably guides a predetermined portion of the support part; and
a regulation groove that regulates sliding of the predetermined portion in a state in which the seat part has been changed
to the use posture;

a biasing member that biases the support part so that the predetermined portion is held in the regulation groove in the state
in which the seat part has been changed to the use posture; and

a release member configured to cause the predetermined portion to slide from the regulation groove to the free groove whereby
the support part swings in first direction against a biasing force of the biasing member.

US Pat. No. 9,752,302

WORKING MACHINE

KUBOTA CORPORATION, Osak...

1. A working machine comprising:
a machine body;
a motor mounted on the machine body;
a fan arranged above the motor, the fan being configured to generate an air flow downward;
a radiator arranged above the fan and on one side of the machine body in a machine width direction;
an oil cooler arranged adjacent to the radiator and on the other side of the machine body in the machine width direction;
a condenser arranged above the radiator and the oil cooler; and
a stay member being configured to stay the condenser at a tilted-up position where the condenser is tilted upward from upper
surfaces of the radiator and the oil cooler,

the stay member includes:
a first bracket disposed around the condenser;
a second bracket disposed around the condenser, the second bracket being different from the first bracket;
a shaft portion disposed between the first bracket and the second bracket;
a frame body configured to support the condenser;
a joint portion attached to a front portion side of the frame body and connected to the shaft portion; and
a stay portion configured to stay the condenser at the tilted-up position, the condenser being tilted by the joint portion
turned about the shaft portion.

US Pat. No. 9,719,618

PIPE JOINT

Kubota Corporation, Osak...

1. A pipe joint in which a spigot formed at an end of one pipe is inserted into a socket formed at an end of another pipe,
the pipes being joined to each other, the pipe joint comprising:
an annular sealing material interposed and compressed between an inner circumferential surface of the socket and an outer
peripheral surface of the spigot to exhibit desired sealing properties;

a push ring fastened to the socket to keep the sealing material in a compressed state in which the sealing material is interposed
between the inner circumferential surface of the socket and the outer peripheral surface of the spigot, the push ring having
a stepped concave surface formed thereon, the stepped concave surface having a bottom surface and being configured to prevent
an end of the sealing material fitted into the stepped concave surface from moving in a diameter expansion direction, the
push ring being configured to push the sealing material into a gap between the inner circumferential surface of the socket
and the outer peripheral surface of the spigot;

a centering mechanism configured to guide the push ring in a pipe diameter direction such that a center of the push ring is
aligned with a pipe axis when the push ring pushes the sealing material into the socket, the centering mechanism comprising
a first tapered surface formed on the push ring and being in contact with an outer periphery of the end of the sealing material,
the first tapered surface being formed in a vicinity of the bottom surface of the stepped concave surface and gradually expanded
in diameter towards the socket;

an annular lock ring fitted in a lock ring accommodating area defined between the inner circumferential surface of the socket
and the outer peripheral surface of the spigot; and

a projection formed on the spigot and engaged with the annular lock ring to secure the annular lock ring within the lock ring
accommodating area,

wherein the first tapered surface and the bottom surface are separate surfaces.

US Pat. No. 9,708,793

WORK VEHICLE AND RUNNING CONTROL APPARATUS CAUSING AUTOMATIC RUNNING OF WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle, comprising:
an own vehicle position detection module configured to detect an own vehicle position;
a path calculation unit configured to calculate a target running path;
an automatic running control unit configured to execute automatic running based on the own vehicle position and the target
running path;

a manual running operation unit configured to be manually operated;
a manual running control unit configured to execute manual running based on an operation signal from the manual running operation
unit;

a first control unit configured to execute a change from manual running by the manual running control unit to automatic running
by the automatic running control unit, a manual stoppage of the vehicle being a condition for the change;

a second control unit configured to execute a forced stoppage of the vehicle when changing from automatic running by the automatic
running control unit to manual running by the manual running control unit; and

a third control unit configured to execute a forced stoppage of the vehicle by temporarily suspending automatic running by
the automatic running control unit in response to a suspend instruction from the manual running operation unit, and configured
to resume automatic running by the automatic running control unit in response to a resume instruction from the manual running
operation unit.

US Pat. No. 9,699,961

MOWING VEHICLE INCLUDING ARRANGEMENT FOR RAISING/LOWERING HEIGHT OF A MOWER UNIT

Kubota Corporation, Osak...

1. A mowing vehicle comprising:
a driving wheel unit that is driven by a travel driving mechanism;
a traveling state detection portion that detects a traveling state including traveling and stopping of the vehicle;
a mower unit that is supported by the vehicle;
a raising/lowering mechanism that changes a height of the mower unit with respect to ground;
a mowing blade driving mechanism that drives a mowing blade of the mower unit;
a raising/lowering control portion that provides, to the raising/lowering mechanism, a raising/lowering control signal for
changing the height of the mower unit with respect to the ground between an operation height and a non-operation height, the
operation height being a height with respect to the ground suitable for mowing and including a lowest height, and the non-operation
height being a height with respect to the ground unsuitable for mowing and including a highest height;

a mowing blade driving control portion that controls driving of the mowing blade;
a mower unit state detection portion that detects a state of the mower unit including the height of the mower unit with respect
to the ground and driving or stopping of the mowing blade; and

a management portion that provides control instructions to the raising/lowering control portion and the mowing blade driving
control portion based on the traveling state detected by the traveling state detection portion and the state of the mower
unit detected by the mower unit state detection portion.

US Pat. No. 9,656,687

VEHICLE HAVING INDEPENDENTLY DRIVEN AND CONTROLLED RIGHT AND LEFT DRIVE WHEELS

Kubota Corporation, Osak...

1. A self-propelled vehicle comprising:
a vehicle body;
a maneuvering unit mounted on the vehicle body and operated by a driver aboard the vehicle body;
a control unit for generating a control amount for changing a travel speed and a travel direction of the vehicle, based on
an operational amount of the maneuvering unit;

at least one freely steerable caster wheel;
a drive unit including a first drive section and a second drive section which are driven and controlled independently of each
other by said control amount;

a drive wheel unit including a left drive wheel driven for traveling by the first drive section and a right drive wheel driven
for traveling by the second drive section; and

a bank detector for detecting a degree of bank of the vehicle and outputting it to said control unit;
wherein the drive unit is configured to output a drive torque to the left drive wheel via the first drive section and the
right drive wheel via the second drive section, and the drive torque output by the drive unit to the left drive wheel and
the right drive wheel, respectively, causes rotation of the left drive wheel and the right drive wheel;

wherein a travel direction of the vehicle is changed by the drive unit outputting different drive torques to the left drive
wheel and the right drive wheel to cause a rotation difference between the left drive wheel and the right drive wheel; and

wherein said control unit includes:
a processing section for receiving a measured actual rotation speed of the left drive wheel and a measured actual rotation
speed of the right drive wheel;

a base control amount calculation section for determining a target rotational speed for the left drive wheel and a target
rotational speed for the right drive wheel based on the control amount;

a drive torque calculation section for calculating a drive torque required to be output by the drive unit for resolving a
difference between the target rotational speed and the actual rotation speed in each of said first drive section and said
second drive section;

a compensation torque calculation section for calculating a compensation torque to be output by the drive unit for resolving
a direction difference between a target travel direction and an actual travel direction in a bank traversing travel, for said
first drive section and said second drive section based on said bank degree; and

a correction section for correcting said control amount based on said required drive torque and said compensation torque for
offsetting a force in an inclinedly downward direction applied to the left drive wheel and the right drive wheel during the
bank traversing travel by adding said compensation torque to said required drive torque.

US Pat. No. 9,556,772

FUEL TANK AND LIQUID TANK CONFIGURATION FOR A WORK VEHICLE

KUBOTA CORPORATION, Osak...

1. A work vehicle comprising:
an engine;
a fuel tank that has a fuel supply inlet and stores engine fuel; and
a liquid tank that has a liquid supply inlet and stores purification liquid used in purification of engine exhaust gas,
wherein the liquid tank is associated with the fuel tank so as to be protected by the fuel tank, whereby the liquid tank is
not directly exposed to hot air from the engine,

wherein the fuel tank comprises:
a main tank section that extends along a side of a transmission along a front-rear direction of a vehicle body; and
an extension tank section that extends forward and outward from the main tank section,
the liquid tank comprises:
a columnar-shaped sub-tank chamber; and
a main tank chamber that extends in a lateral direction from said sub-tank chamber, and
the extension tank section comprises a recessed section adapted to at least partially receive therein or accommodate a portion
of the main tank chamber of the liquid tank,

wherein the work vehicle further comprises a heat exchanger adapted to receive engine coolant and being arranged inside the
sub tank chamber.

US Pat. No. 9,534,352

BOOM FOR WORKING MACHINE WITH SWELLING PART

KUBOTA CORPORATION, Osak...

1. A boom for a working machine, the boom comprising:
a forked base support of which a base end side is pivotally supported by a machine body and a fore end side is connected with
a boom main body,

the base support comprises:
a body part that has a hose introduction hole for inserting a hydraulic hose from the machine body into the boom main body;
and

a left and right pair of leg parts that are extended in a forked shape from the body part toward the machine body, and swingably
pivotally supported on a machine body side,

the body part includes:
sidewalls that are connected with the left and right leg parts;
an upper wall that connects between upper parts of the left and right sidewalls; and
a lower wall that connects between lower parts of the left and right sidewalls, and
a part surrounded by the left and right sidewalls, the upper wall, and the lower wall is configured as the hose introduction
hole, and

the upper wall of the body part includes:
an inner surface on a first side that faces the lower wall; and
an outer surface on a second side that faces opposite the inner surface;
on the first side of the upper wall of the body part, an enlarged opening part that extends in an upward direction away from
the lower wall from the fore end side toward a forked side is formed, and on the second side of the upper wall of the body
part, a swelling part that extends in the upward direction away from the lower wall from the fore end side toward the forked
side so as to correspond to the first side of the upper wall, and skirt parts that separate in a forked shape and extend downward
from a lateral center of a top part of the swelling part toward upper surfaces of the left and right leg parts are formed.

US Pat. No. 9,511,761

HYBRID VEHICLE

Kubota Corporation, Osak...

1. A hybrid vehicle comprising:
an engine having an output shaft;
a clutch having an input member and an output member;
a stepless speed changer mechanism having a driving shaft and a driving member; and
a motor generator having a rotor;
wherein the output shaft is connected to the input member, the output member is connected to the driving shaft, and the rotor
is connected and mounted on the driving shaft between the driving member and the output member;

wherein the rotor defines a cooling air introduction hole opened in a longitudinal direction of the drive shaft for communicating
a first space disposing the driving member and a second opening disposing the input member with each other;

wherein the output member and the driving shaft are connected coaxially and together, the rotor is fixedly engaged to the
driving shaft, and a stator of the motor generator is fixed to a clutch casing of the clutch and to a speed changer case of
the stepless speed changer mechanism; and

wherein the clutch casing defines an air inlet opening defined at a position on the clutch casing overlapped with the clutch
in a direction extending along a length of each of the output member and the driving shaft, and the air introduced through
the air inlet opening flowing through the cooling air introduction hole and reaching the speed changer case.

US Pat. No. 10,124,659

UTILITY WORK VEHICLE

Kubota Corporation, Osak...

1. A utility work vehicle comprising:an engine section including an engine having its output shaft oriented laterally along a right/left direction of a vehicle body, a speed changer device having its input shaft oriented laterally along the right/left direction of the vehicle body, the speed changer device being disposed rearwardly of the engine, and a belt type stepless speed changer device disposed on one right/left side of the engine and the speed changer device and configured to transmit power from the engine to the speed changer device;
a rear frame supporting the engine section, the rear frame including right and left rear wheel supporting portions provided at right and left end portions disposed on more laterally outer sides of the vehicle body than the engine section and configured to support right and left rear wheels via right and left rear suspensions, each one of the right and left rear wheel support portions having a front supporting member and a rear supporting member extending upwards from the rear frame; and
a main frame supporting the rear frame;
wherein the rear supporting member is disposed on more rear side of the vehicle body than the belt type stepless speed changer device, the rear supporting member having a vertical length extending from the rear frame to a rear frame portion of the main frame disposed upwardly of the rear frame to connect an upper end portion of the rear supporting member to the rear frame portion; and
wherein the front supporting member is disposed on more laterally outer side of the vehicle body than the belt type stepless speed changer device, the front supporting member having a vertical length smaller than the rear supporting member, the front supporting member forming, between an upper end of this front supporting member and the rear frame portion, a space that allows attachment/detachment of a speed changer cover detachably attached to the belt type stepless speed changer device from a laterally outer side of the vehicle body.

US Pat. No. 10,029,731

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:a vehicle body frame;
a prime mover unit disposed in a front part of a vehicle body;
a driving part disposed in a rear part of the vehicle body; and
a battery disposed between the prime mover unit and the driving part:
the vehicle body frame including:
a base frame disposed in a lower part of the vehicle body; and
a center pillar disposed between the prime mover unit and the driving part, the center pillar extending upward from the base frame;
the prime mover unit including a radiator disposed immediately forward of the center pillar;
the driving part including a steering wheel disposed above the battery; and
the center pillar including:
a partition that is made of a steel plate, the partition dividing a storage space, formed in the front part of the vehicle body, fore and aft into a first space adjacent the prime mover unit and a second space adjacent the battery;
a first supporting member that is made of a steel plate and supports the partition from below;
a second supporting member that is made of a steel plate and supports the radiator from below;
a third supporting member that is made of a steel plate and supports the steering wheel; and
a mounting platform that is made of a steel plate and on which the battery is mounted,
the partition, the first supporting member, the second supporting member, the third supporting member and the mounting platform being configured as an integrated structure by welding.

US Pat. No. 9,919,697

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a traveling device having a pair of left and right front wheels that can be driven and a pair of left and right rear wheels
that can be driven;

an engine that drives either one pair of the pair of left and right front wheels and the pair of left and right rear wheels;
an electric motor that drives the other pair of the pair of left and right front wheels and the pair of left and right rear
wheels;

a battery for supplying electric power to the electric motor;
a controller configured to control the electric motor based on relation between a rotational speed of the electric motor and
a torque instruction value;

a front-wheel rotational speed detection sensor for detecting a rotational speed of the front wheels; and
a rear-wheel rotational speed detection sensor for detecting a rotational speed of the rear wheels;
wherein the controller includes:
a rotational speed reduction degree calculating section for calculating, based on a detection value from the front-wheel rotational
speed detection sensor and a detection value from the rear-wheel rotational speed detection sensor, a rotational speed reduction
degree which is a degree of reduction of the rotational speed of either the front wheels or the rear wheels that are driven
by the electric motor relative to a rotational speed of either the front wheels or the rear wheels that are driven by the
engine;

a torque upper limit value changing section for changing an upper limit value of the torque instruction value, based on result
of comparison between the rotational speed reduction degree and a reference value; and

wherein the torque upper limit value changing section is configured to increase the upper limit value of the torque instruction
value in a powering range in case the rotational speed reduction degree is greater than the reference value and to decrease
the upper limit value of the torque instruction value in the powering range in case the rotational speed reduction degree
is smaller than the reference value.

US Pat. No. 9,914,487

WORK VEHICLE

Kubota Corporation, Osak...

1. A work vehicle comprising:
a vehicle body frame;
a prime mover part that is supported by the vehicle body frame;
a bonnet that is configured to vertically swing between a closed position at which the prime mover part is covered, and an
open position at which the prime mover part is open; and

a support frame that supports a free end side of the bonnet located at the closed position;
wherein
the bonnet is provided with, in free end parts of left and right inner side surfaces of the bonnet, left and right guide-target
parts that are arranged in at least lower end portions of the free end parts,

the support frame is provided with left and right guiding parts that are located at the same height as an upper end of the
prime mover part, and are configured to come into contact with the left and right guide-target parts when the bonnet swings
downward to the closed position, so as to enable the bonnet to be centered with respect to the vehicle body frame, and

at least the left and right guide-target parts or the left and right guiding parts have left and right inclined surfaces that
serve as centering effective surfaces.

US Pat. No. 9,906,967

WORK MACHINE AND COMMUNICATION MONITORING METHOD

Kubota Corporation, Osak...

1. A work machine comprising:
a work section for effecting a ground work;
a communication section capable of communication with an external server via a mobile communication terminal, the mobile communication
terminal comprising a GPS acquiring section and a terminal display; and

a control section operatively connected to the communication section and configured to:
receive GPS location information and field identification information of a field in which a work is to be effected from the
mobile communication terminal, wherein the GPS location information is acquired by the GPS acquiring section of the mobile
communication terminal and the field identification information is generated by the mobile communication terminal requesting
a field map from the external server, displaying the field map on the terminal display of the mobile communication terminal,
and selecting the field identification information of the field upon which the ground work is to be effected;

generate work information based on the ground work effected by the work section;
associate the work information with the GPS location information and the field identification information; and
transmit the work information, associated with the GPS location information and the field identification information, to the
external server via the communication section and the mobile communication terminal.

US Pat. No. 9,845,857

COMBINE

Kubota Corporation, Osak...

1. A combine that is provided with a speed-change power transmission apparatus including: a hydraulic static continuously
variable transmission unit that has a hydraulic pump and a hydraulic motor, receives an input of drive force from an engine,
and subjects the drive force to speed change; a planetary power transmission unit that combines the drive force from the engine
and an output from the continuously variable transmission unit and outputs a combined drive force to a travelling apparatus;
and a power transmission case that houses the continuously variable transmission unit and the planetary power transmission
unit, wherein
a continuously variable transmission case portion of the power transmission case is formed integrally with a planetary power
transmission case portion of the power transmission case, the continuously variable transmission case portion housing the
continuously variable transmission unit, and the planetary power transmission case portion housing the planetary power transmission
unit,

a partition that separates a continuously variable transmission compartment of the continuously variable transmission case
portion and a planetary power transmission compartment of the planetary power transmission case portion from each other is
provided within the power transmission case, the continuously variable transmission compartment housing the continuously variable
transmission unit, and the planetary power transmission compartment housing the planetary power transmission unit, and

a port block with which a drive circuit that connects the hydraulic pump and the hydraulic motor to each other is formed is
attached to an end portion of the continuously variable transmission case portion, the end portion being opposite a side to
which the planetary power transmission case portion is coupled.

US Pat. No. 9,821,618

SUSPENSION SYSTEM

Kubota Corporation, Osak...

1. A suspension system comprising: a suspension mechanism for a traveling vehicle body;
a suspension reference position varying mechanism configured to vary a suspension reference position which is a reference
position of a suspension stroke of the suspension mechanism;

a suspension stroke sensor configured to output a detection signal for obtaining the suspension stroke; and
a controller configured to control the suspension reference position varying mechanism, the controller including:
a maximal value calculating section for calculating a maximal value corresponding to a maximal position of the suspension
stroke each time a control cycle is lapsed, based on the detection signals obtained during a prior set period back from the
lapse of said control cycle;

a minimal value calculating section for calculating a minimal value corresponding to a minimal position of the suspension
stroke based on the detection signals;

an intermediate value calculating section for calculating an intermediate value from the calculated maximal value and the
calculated minimal value;

a time period setting section for setting said prior set period to have a sufficient length to include a plurality of said
maximal values and a plurality of said minimal values, said intermediate value being calculated from the greatest one of the
plurality of said maximal values and the smallest one of the plurality of said minimal values;

a target range setting section for setting a target range to be compared with the intermediate value;
a suspension reference position determining section, the suspension reference position determining section outputting a control
command to the suspension reference position varying mechanism for displacing the calculated intermediate value toward a target
range when the calculated intermediate value is deviated from the target range; and

a hydraulic control amount calculating section for calculating a control amount for the suspension reference position varying
mechanism so as to realize the suspension reference position determined by the suspension reference position determining section;

and
wherein said controller is configured to increase a control execution frequency to the suspension reference position varying
mechanism when a traveling speed of the vehicle body is a low speed, and to decrease the control execution frequency when
the traveling speed of the vehicle body is a high speed.

US Pat. No. 9,715,231

AGRICULTURE SUPPORT SYSTEM

KUBOTA CORPORATION, Osak...

1. An agriculture support system comprising:
a mobile terminal allocated to an agricultural operator;
an external device different from the mobile terminal;
an operation contents creation part configured to create an operation contents, the operation contents including an agricultural
operation to be carried out in an agricultural field; and

an operation instruction part configured to send the operation contents to the mobile terminal, wherein the mobile terminal
includes:

an obtaining part configured to obtain the operation contents created by the operation contents creation part;
a first display part configured to display an operation confirmation screen that shows the operation contents, the operation
contents being obtained by the obtaining part;

a confirmation button configured to select and confirm the operation contents shown on the operation confirmation screen;
and

a notification part configured to notify the external device of completion of selecting and confirming the operation contents
using the confirmation button, the operation contents being shown on the operation confirmation screen of the mobile terminal,
and wherein

the external device displays the operation contents confirmed by the mobile terminal.

US Pat. No. 9,694,679

DRIVE CONTROL SYSTEM FOR WORK VEHICLE

Kubota Corporation, Osak...

1. A drive control system for a work vehicle, comprising:
a power transmission device having a drive mode switching mechanism that performs drive mode switching between a four-wheel
drive mode in which drive power is transmitted to front wheels and rear wheels and a two-wheel drive mode in which drive power
is transmitted to only the rear wheels;

a request determination unit that determines a necessity for an increase in drive power on a contact area of the work vehicle,
and outputs an increase request depending on the determination result;

a drive mode control unit that outputs a drive mode switching request for switching to the four-wheel drive mode to the drive
mode switching mechanism, in response to output of the increase request; and

a target revs detection unit that detects a target number of revolutions of an engine of the work vehicle,
wherein the request determination unit determines that the increase in drive power is necessary and outputs the increase request,
when an actual number of revolutions of the engine is greater than the target number of revolutions by a predetermined value
or more, and wherein the predetermined value is stored.

US Pat. No. 9,649,924

WORK/UTILITY VEHICLE

KUBOTA CORPORATION, Osak...

1. A work or utility vehicle comprising:
a drive source;
a vehicle body frame;
left and right front wheels supported on the vehicle body frame;
left and right rear wheels supported on the vehicle body frame;
a transmission case supported on the vehicle body frame and transmitting a driving force from the drive source to at least
the left and right rear wheels;

left and right vertical frames arranged in a rear frame section of the vehicle body frame;
at least one left and right suspension arm movably coupled to a respective one of the left and right vertical frames;
a detachably mounted guard member protecting the transmission case and having a protecting portion disposed behind the left
and right vertical frames;

an upper end of the guard member being arranged below an upper end of the left and right vertical frames;
the protecting portion being located such that an imaginary horizontal line oriented along a front and back direction of the
vehicle body frame passes through the transmission case and a vertical center of the protecting portion;

a stabilizer supported at two ends by suspension arms of the left and right rear wheels and being arranged in a position that
is lower than the guard member; and

the stabilizer being arranged closer to a lower end than to an upper end of the left and right vertical frames,
wherein the protecting portion of the guard member is structured and arranged to overlie and protect a rear side of the transmission
case and the stabilizer is arranged forwardly of the protecting portion.

US Pat. No. 9,642,303

GRASS CUTTER INCLUDING A FAN ABOVE THE MOWER DECK

KUBOTA CORPORATION, Osak...

1. A grass cutter comprising:
a mower comprising:
a rotary blade cutting grass by being driven to rotate;
a mower deck housing the rotary blade below a top of the mower deck;
a fan; and
a fan cover that covers the fan, the fan cover being separate from and arranged above the top of the mower deck, the fan generating
carrier air;

the fan and the blade being rotatable coaxially; and
a duct comprising:
a duct body communicating with the mower deck and extending in a conveyance direction of grass clippings cut by the rotary
blade;

the duct body including a side wall facing the fan; and
a carrier-air opening configured to allow carrier air generated by the fan to be introduced into the duct body;
the carrier-air opening being formed on the side wall.

US Pat. No. 9,540,979

WORKING VEHICLE

Kubota Corporation, Osak...

1. A working vehicle having an exhaust gas cleaning device, comprising:
a driving operation section;
an engine disposed in an engine room covered by a hood disposed forwardly of the driving operation section;
a DPF mounted upwardly of the engine, the DPF including an upper face portion, a bottom face portion, a first lateral face
portion facing a laterally inner side of a vehicle body, and a second lateral face portion facing a first laterally outer
side of the vehicle body;

an SCR disposed upwardly of the engine in juxtaposition with the DPF in a vehicle body transverse direction, the SCR including
an upper face portion, a bottom face portion, a first lateral face portion facing a second laterally outer side of the vehicle
body opposite to the first laterally outer side, and a second lateral face portion facing the laterally inner side of the
vehicle body; and

a connecting pipe including a first connecting end connected to the first lateral face portion of the SCR, a second connecting
end connected to the second lateral face portion of the DPF, and a main body portion extending from the first connecting end
to the second connecting end, the main body portion extending along the second lateral face portion of the DPF and the first
lateral face portion of the SCR at positions lower than the upper face portion of the DPF and the upper face portion of the
SCR.

US Pat. No. 10,036,303

LAWN MOWER

Kubota Corporation, Osak...

1. A lawn mower comprising:a pair of left and right main frames;
an engine mounted to the pair of left and right main frames;
a radiator for cooling water that cools the engine;
a cooling fan for feeding cooling air to the radiator;
a hood accommodating the engine, the radiator and the cooling fan; and
an air deflector provided between the pair of left and right main frames and configured to change direction of cooling exhaust air flowing toward a ground surface,
wherein in plan view, the air deflector is provided between one of the pair of left and right main frames and a lateral side wall of the engine associated with the one of the pair of left and right main frames.

US Pat. No. 10,018,290

PRESSING RING, JOINT, AND VALVE

KUBOTA CORPORATION, Osak...

1. A pressing ring for pressing an annular sealing member of a joint to a rear of a socket of the joint, wherein the socket is formed on a first passage forming member, wherein the spigot is formed on a second passage forming member and lies in the socket, wherein the annular sealing member lies in a sealing member insertion space, wherein an inner periphery of the rear of the socket has a peripheral wall protruding inward in a radial direction of the second passage forming member, wherein the sealing member insertion space is located between an opening end face of the socket, the peripheral wall of the socket, an outer circumference of the spigot, and an inner circumference of the socket, wherein the pressing ring is fitted onto the spigot, wherein the joint joins the first passage forming member and the second passage forming member, wherein the spigot lies in the socket, wherein the pressing ring is movable by a pressing member along an axis of the second passage forming member in a pressing direction, wherein the pressing ring is fastened to the socket with a plurality of bolts, the pressing ring comprising:a plurality of bolt insertion holes into which the plurality of bolts are inserted;
a pressing face in contact with an end of the annular sealing member and arranged opposing the opening end face of the socket at a predetermined distance from the opening end face of the socket, the pressing face being configured to press the annular sealing member;
a plurality of protrusions arranged outside of the plurality of bolt insertion holes in the radial direction of the second passage forming member to contact the opening end face of the socket and arrange the pressing face at the predetermined distance from the opening end face of the socket; and
an escaping portion dimensioned to allow a part of the annular sealing member to escape when the part of the annular sealing member is pressed by the pressing face, the escaping portion being a recessed portion dimensioned to create an opening near an area of the opening end face of the socket that is opposed to the escaping portion, the escaping portion being arranged inside of the plurality of bolt insertion holes in the radial direction of the second passage forming member and outside of the pressing face in the radial direction of the second passage forming member, the escaping portion being recessed from the pressing face in a drawing direction of the spigot,
wherein, in the radial direction of the second passage forming member, a clearance between the inner circumference of the socket and the outer circumference of the spigot is less than a distance between the outer circumference of the spigot and the escaping portion.

US Pat. No. 10,010,834

OPERATING METHOD FOR MEMBRANE SEPARATION DEVICE AND MEMBRANE SEPARATION DEVICE

Kubota Corporation, Osak...

1. A method for operating a membrane separation device, the membrane separation device including a separation membrane immersed in water to be treated and an air diffusion device positioned below the separation membrane, the membrane separation device providing treated water that has permeated through the separation membrane while diffusing air from the air diffusion device towards the separation membrane, the method comprising:setting and updating a target value of an amount of the diffusion air diffused from the air diffusion device based on a transmembrane pressure difference of the separation membrane; and
diffusing air from the air diffusion device towards the separation membrane by controlling the amount of the diffusion air to become the target value by increasing or decreasing the amount of the diffusion air,
wherein the setting and updating the target value includes:
updating the target value such that a change or a rate of change in the target value has a first predetermined absolute value when the amount of the diffusion air is being increased based on the transmembrane pressure difference indicating that materials are attached to the separation membrane; and
updating the target value such that the change or the rate of change in the target value has a second predetermined absolute value when the amount of the diffusion air is being decreased based on the transmembrane pressure difference not indicating that materials are attached to the separation membrane, the first predetermined absolute value being greater than the second predetermined absolute value such that the amount of the diffusion air is increased at a first rate greater than a second rate at which the amount of the diffusion air is decreased, thereby enhancing a cleaning effect when the materials are attached to the separation membrane and the amount of the diffusion air is being increased while reducing a risk of clogging of the separation membrane due to a sudden reduction of the amount of the diffusion air when the amount of the diffusion air is being reduced.