US Pat. No. 9,217,527

NO-SKIVE HYDRAULIC HOSE COUPLING WITH IMPROVED HOSE RETENTION AND SEALING

Caterpillar Inc., Peoria...

1. A hydraulic hose and coupling assembly, comprising:
a hydraulic hose having an inner elastomeric liner, a reinforcing layer comprised of a plurality of metallic wires surrounding
the inner elastomeric liner, and an outer elastomeric cover surrounding the metallic reinforcing layer; and

a coupling secured to the hydraulic hose in a no-skive arrangement and having a proximal end adjacent to an opening of the
hydraulic hose and a distal end further removed from the hydraulic hose opening than the proximal end, the coupling including:

an inner stem inserted into the hose and in engagement with the inner elastomeric liner, the inner stem having an inner diameter,
a first end and a second end, the first end free of the hose and the second end disposed inside the hose, the inner stem including
a plurality of radially inwardly directed recesses, a radially outwardly directed serration, and a plurality of straight cylindrical
outer surfaces positioned within an outer ferrule, wherein each of the straight cylindrical outer surfaces that are positioned
within the outer ferrule are oriented parallel to a longitudinal axis of the inner stem and are disposed before or after each
of the recesses positioned within the outer ferrule; and

the outer ferrule surrounding the outer elastomeric cover, the outer ferrule including a plurality of radially inwardly extending
barbs disposed in first, second, third and fourth circumferential rows, the fourth row of barbs disposed to extend toward
and align with a first of the plurality of straight cylindrical outer surfaces of the inner stem, the third row of the barbs
disposed to extend toward and align with a second of the plurality of straight cylindrical outer surfaces of the inner stem,
the second straight cylindrical outer surface flanked by at least two of the recesses, wherein one of the rows of barbs is
disposed to extend toward and align with the serration,

wherein the rows of barbs and the inner stem define a plurality of hose retention and sealing zones, the plurality of hose
retention and sealing zones each having a Menor Factor, the Menor Factor in each zone decreasing from the proximal end toward
the distal end,

wherein the Menor Factor is the mathematical equation
FM=WD/LC+(BH)(TW)+½ZL
wherein FM equals the Menor Factor;

WD equals wire deflection;

LC equals liner compression;

BH equals barb height;

TW equals tip width; and

ZL equals zone length.

US Pat. No. 9,434,425

TRACK JOINT ASSEMBLIES

Caterpillar Inc., Peoria...

1. A track joint assembly, comprising:
a first link having a first bore;
a second link having a second bore;
a bushing including:
a first axial end portion having a first outer surface configured to engage with the first bore; and
a second axial end portion having a second outer surface configured to engage with the second bore; and
a seal assembly positioned at an axial end of the first axial end portion, and contacting the first link at a seal-link interface.

US Pat. No. 9,109,942

METHOD OF CALCULATING PAYLOAD MATERIAL WEIGHT AND MACHINE USING SAME

Caterpillar Inc., Peoria...

1. A machine having a payload material weight calculation algorithm executable thereon, comprising:
a machine frame supported by a conveyance;
a dump body pivotally mounted on the machine frame and having a loaded condition in which the dump body supports a payload
material and an unloaded condition in which the dump body is substantially free of the payload material;

a first front strut and a first rear strut positioned to support the dump body relative to the machine frame; and
an electronic controller in communication with the first front strut and the first rear strut and configured to:
determine a first force on the first front strut and the first rear strut in the unloaded condition,
adjust the first force based on at least one of an unloaded front strut friction force corresponding to the unloaded condition
and an unloaded rear strut friction force corresponding to the unloaded condition to define an unloaded weight,

determine a second force on the first front strut and the first rear strut in the loaded condition,
adjust the second force based on at least one of a loaded front strut friction force corresponding to the loaded condition
and a loaded rear strut friction force corresponding to the loaded condition to define a loaded weight, and

determine a weight of the payload material based on a difference between the loaded weight and the unloaded weight.

US Pat. No. 9,064,352

POSITION IDENTIFICATION SYSTEM WITH MULTIPLE CROSS-CHECKS

Caterpillar Inc., Peoria...

1. A system for determining the position of a mobile machine, the system comprising:
at least one motion sensor configured for detecting one or more of changes in position, velocity, acceleration, heading, wheel
speed, rotation, steering angle, or orientation of the mobile machine;

at least one global positioning system (GPS) receiver in addition to said at least one motion sensor, said at least one GPS
receiver configured to generate a first location signal indicative of an actual location of the mobile machine;

an integration module configured to integrate information from said at least one motion sensor and said at least one GPS receiver
to generate a second location signal indicative of an actual location of the mobile machine; and

a controller in communication with the at least one motion sensor, the at least one GPS receiver, and the integration module,
the controller being configured to:

determine the reliability of information received from the at least one motion sensor, the at least one GPS receiver, and
the integration module; and

following a period of time from when received information is first determined to be unreliable, switching from determining
the position of the mobile machine using information determined to be unreliable to determining the position of the mobile
machine using dead reckoning from a last known good position of the mobile machine, a determined wheel speed of the mobile
machine, and a steering command being provided to the mobile machine.

US Pat. No. 9,279,234

DOOR SYSTEM FOR A MACHINE

Caterpillar Inc., Peoria...

10. A door system for a machine, the door system comprising:
a door frame including a first panel and a second panel coupled to the first panel,
the first panel including a first outer portion and a second outer portion coupled to the first outer portion, the first outer
portion having a first outer leg, an intermediate portion, and a second outer leg together defining a cavity having a U-shape
with a width about a first axis, the first outer leg disposed closer in proximity to the window than the second outer leg,
the second outer portion extending from the first outer leg toward the window about a second axis that is perpendicular to
the first axis; and

the second panel having a first inner portion, a lip portion and a second inner portion coupled to one another, the first
inner portion joined to the second outer portion of the first panel at a first coupling, the first coupling extending about
the second axis, the second inner portion having a first inner leg and a second inner leg together defining a seal channel
wall that extends within the cavity, the first inner leg extending from the lip portion, the second inner leg coupled to the
second outer leg of the first outer portion at a second coupling in a direction substantially about the first axis; and

a latch bracket coupled to the door frame, wherein the second outer leg of the first outer portion of the first panel has
two slanted sides located in the vicinity of the latch bracket, and wherein the slanted sides are converging distally from
the first outer leg.

US Pat. No. 9,057,324

SIX-STROKE ENGINE SYSTEM WITH BLOWDOWN TURBOCHARGER

Caterpillar Inc., Peoria...

1. An internal combustion engine system operating on a six-stroke cycle comprising:
an engine including a combustion chamber including a piston reciprocally disposed in a cylinder to move between a top dead
center position and a bottom dead center position, the combustion chamber further including:

an exhaust valve adapted to open and close to selectively expel exhaust gasses from the combustion chamber during an exhaust
stroke;

a blowdown exhaust valve adapted to open and close to selectively expel blowdown exhaust gasses from the combustion chamber
during a recompression stroke;

an intake valve adapted to open and close to selectively introduce air into the combustion chamber during an intake stroke;
and

a blowdown compressor intake valve adapted to selectively open and close to introduce air into the combustion chamber;
an exhaust line communicating with the engine and a turbine, the exhaust line directing the exhaust gasses expelled from the
exhaust valve to drive the turbine;

a compressor adapted to be driven by the turbine;
an intake line communicating with the engine and the compressor, the intake line:
receiving compressed air from the compressor; and
directing a portion of the compressed air into the combustion chamber through the intake valve;
a blowdown exhaust line communicating with the engine and a blowdown turbine, the blowdown exhaust line directing blowdown
exhaust gasses expelled from the blowdown exhaust valve to drive the blowdown turbine, the blowdown exhaust line being separate
from the exhaust line connected to an inlet of the turbine;

a blowdown compressor adapted to be driven by the blowdown turbine; and
a blowdown compressor line communicating with the engine, the blowdown compressor, and the intake line downstream of the compressor,
the blowdown compressor line:

directing a portion of the compressed air from the intake line into the blowdown compressor; and
directing super-compressed air from the blowdown compressor into the engine through the blowdown compressor intake valve;
wherein the super-compressed air is introduced through the blowdown compressor intake valve into the combustion chamber during
the recompression stroke.

US Pat. No. 9,523,291

VALVE ACTUATION SYSTEM HAVING ROCKER-LOCATED HYDRAULIC RESERVOIR

Caterpillar Inc., Peoria...

1. A pin for a valve actuation system having a rocker arm, comprising:
an elongated cylindrical shaft having a first open end, a second end, and an outer surface, wherein the first open end is
configured to be received within a bore of the rocker arm, wherein the outer surface is stepped, wherein a first outer diameter
at the first open end is smaller than a second outer diameter at the second end, and wherein at least one radially oriented
recess is formed at the first open end;

a head connected to the elongated cylindrical shaft at the second end and having a rounded outer surface;
a reservoir formed in the elongated cylindrical shaft; and
an axial passage extending from the reservoir through the head, wherein the reservoir has an inner diameter that is about
2-3 times an inner diameter of the axial passage.

US Pat. No. 9,080,723

PERSONNEL CLASSIFICATION AND RESPONSE SYSTEM

Caterpillar Inc., Peoria...

8. A method of responding to a person in the vicinity of a vehicle, the method comprising:
processing an image of the vicinity of the vehicle to identify a marker disposed on the person;
determining a zone relative to the vehicle in which the marker is present; and
activating a warning apparatus based on the zone and the result of the processing step.

US Pat. No. 9,062,576

EXHAUST PARTICULATE FILTER SYSTEM AND OPERATING METHOD THEREFOR

Caterpillar Inc., Peoria...

1. A method of operating an exhaust particulate filter system for an internal combustion engine comprising the steps of:
transmitting electromagnetic energy through an exhaust particulate filter containing trapped soot and ash;
attenuating the transmitted electromagnetic energy in response to the trapped soot;
determining an ash value indicative of an amount of the trapped ash;
determining which of a plurality of available regeneration protocols is appropriate; and
outputting a regeneration suitability signal associated with the regeneration protocol determined to be appropriate, wherein
the determining which of a plurality of available regeneration suitability signal step is responsive to an attenuation of
the transmitted electromagnetic energy and the determined ash value.

US Pat. No. 9,574,528

EXHAUST GAS RECIRCULATION ADAPTER

Caterpillar Inc., Peoria...

1. An exhaust gas recirculation adapter for an air intake system of an engine, the exhaust gas recirculation adapter comprising:
a tube portion defining an interior space therein; and
a protrusion provided on an inner surface of a bottom section of the tube portion and projecting into the interior space of
the tube portion, the protrusion including a first wall facing exhaust gases and a second wall facing intake air, the first
wall and the second wall defining a height and a width of the protrusion such that the height and the width are less than
a diameter of the tube portion; and

wherein the first wall includes a concave shaped surface configured to provide a surface for impacting of the exhaust gases
flowing in a direction opposite to the intake air and deflecting the impacted exhaust gases in a direction of flow of the
intake air.

US Pat. No. 9,079,575

MACHINE POWERTRAIN CONTROL SYSTEM AND METHOD

Caterpillar Inc., Peoria...

1. A machine having a powertrain, the powertrain including an engine operably connected to a torque converter, the torque
converter connected to a transmission, the machine comprising:
a selector interface configured to activate a manual mode operation or an automatic mode operation of the machine; and
a control system configured to:
receive an activation signal from the selector interface indicative of the automatic mode operation of the machine; and when
in the activation signal is received to:

command the transmission to shift from a second gear ratio to a first gear ratio when the torque converter is in a converter
drive mode;

command the torque converter to switch the converter drive mode to a direct drive mode;
command the torque converter to remain in the direct-drive mode while the transmission shifts from the first gear ratio to
the second gear ratio; and

send a speed command signal to the engine to limit an engine speed below a first engine speed limit when a gear ratio setting
of the transmission is indicative of the second gear ratio.

US Pat. No. 9,510,157

TRACKING MOBILE RESOURCE AT MANUFACTURING SITE

Caterpillar Inc., Peoria...

1. A system for tracking a mobile resource at a manufacturing site, wherein the manufacturing site includes a fixed resource,
the system comprising:
a transmitter mounted on the mobile resource, the transmitter configured to transmit a first signal indicative of a location
of the mobile resource at the manufacturing site;

a transceiver disposed at the manufacturing site and configured to be in communication with the transmitter, the transceiver
configured to:

receive the first signal from the transmitter via a wireless network of the manufacturing site; and
transmit a second signal indicative of the location of the mobile resource at the manufacturing site and a duration for which
the mobile resource is located at the manufacturing site;

a database comprising information relating to a layout of the manufacturing site, a location of the fixed resource at the
manufacturing site, location of the transceiver disposed at the manufacturing site, and the mobile resource at the manufacturing
site; and

a controller in communication with the transceiver and the database, the controller configured to:
receive the second signal from the transceiver;
identify the location of the mobile resource at the manufacturing site based on the second signal received from the transceiver
and the information stored in the database;

determine a location of the mobile resource at the manufacturing site with respect to the fixed resource at the manufacturing
site; and

determine operational characteristics of the mobile resource based on the fixed resource associated with the mobile resource
and the duration for which the mobile resource is located at the manufacturing site, wherein the operational characteristics
include a utilization factor of the mobile resource and at least one type of activity performed by the mobile resource based
on the second signal received.

US Pat. No. 9,381,960

TRACK RECOIL SYSTEM

Caterpillar Inc., Peoria...

1. A recoil system for a track assembly having a track roller frame and an idler movable relative to the track roller frame
in opposing first and second directions, the recoil system comprising:
a spring;
a track adjust cylinder;
an end plate; and
a track adjust piston received in the track adjust cylinder, the spring being arranged with a first end abutting against the
track adjust cylinder and a second end abutting against the end plate, the track adjust cylinder and the track adjust piston
being movable in the first and second directions in response to movement of the idler with movement of the track adjust cylinder
in the second direction compressing the spring against the end plate;

wherein the track adjust cylinder is adapted to rotate with the first end of the spring relative to the track adjust piston
as the spring compresses and extends in response to movement of the track adjust cylinder in the first and second directions
and wherein the second end of the spring is fixed against rotation relative to the end plate.

US Pat. No. 9,067,282

REMANUFACTURING CAST IRON COMPONENT WITH STEEL OUTER LAYER AND REMANUFACTURED COMPONENT

Caterpillar Inc., Peoria...

1. A method of remanufacturing a component, comprising:
removing a damaged area of a cast iron component, the remaining component constituting a cast iron base;
depositing molten particles on the cast iron base to form a pool of agglomerated molten particles, wherein the pool comprises
aluminum and at least one of nickel, cobalt, chromium, silicon, or iron;

cooling the pool to form a solid intermediate layer; and
depositing solid particles on the solid intermediate layer to form an outer layer, wherein the solid particles comprise steel.

US Pat. No. 9,086,143

HYDRAULIC FAN CIRCUIT HAVING ENERGY RECOVERY

Caterpillar Inc., Peoria...

1. A hydraulic fan circuit, comprising:
a primary pump;
a motor;
a fan connected to and driven by the motor;
a flywheel connected to one of the motor and the fan, the flywheel configured to rotate with the fan;
a supply passage extending from the primary pump to the motor;
a return passage extending from the motor to the primary pump;
the flywheel configured to rotate the fan after the primary pump has stopped driving the motor; and
a diverter valve configured to selectively connect the supply passage to a low-pressure sump; and wherein
the primary pump is an over-center pump;
the diverter valve is a first diverter valve; and
the hydraulic fan circuit further includes a second diverter valve associated with the return passage.

US Pat. No. 9,510,137

SHORT RANGE PEER-TO-PEER COMMUNICATIONS SYSTEM

Caterpillar Inc., Peoria...

1. A short range peer-to-peer communications system for communicating between mobile machines, comprising:
a first machine including:
a first prime mover;
a first ground engaging drive mechanism operatively connected to the first prime mover to propel the first machine about a
work site;

a first controller configured to generate a first signal indicative of a characteristic associated with operating the first
machine, and to control operations of at least one of the first prime mover or the first ground engaging drive mechanism,
wherein the first signal includes a speed of the first machine;

a first peer-to-peer transmitter system on the first machine for transmitting the first signal; and
a second machine including:
a second prime mover;
a second ground engaging drive mechanism operatively connected to the second prime mover to propel the second machine about
the work site;

a second controller configured to control operations of at least one of the second prime mover or the second ground engaging
drive mechanism;

a second peer-to-peer receiver system for receiving the first signal directly from the first peer-to-peer transmitter system,
wherein the first controller and the second controller are configured to coordinate the speed of the first machine and a speed
of the second machine based at least in part on the first signal.

US Pat. No. 9,527,198

SURGE ACCUMULATOR FOR HYDRAULIC HAMMER

Caterpillar Inc., Peoria...

1. An accumulator that is connectable to a hydraulic circuit disposed in a housing, the accumulator comprising:
an annular base including a proximal end and a distal end, the proximal end of the base defining a first central opening,
the proximal end of the base and the housing defining an annular inlet that encircles the first central opening and that is
in communication with the first central opening;

a diaphragm having an outer periphery;
a cover including a proximal end and a distal end, the proximal end of the cover coupled to the distal end of the base with
the outer periphery of the diaphragm sandwiched therebetween.

US Pat. No. 9,109,975

APPARATUS FOR MEASURING BACKLASH IN SPECIMEN GEAR

Caterpillar Inc., Peoria...

1. An apparatus for measuring backlash in a specimen gear, the apparatus including:
a test gear mounted on a forward portion of a spindle, the test gear configured to mesh with the specimen gear and form an
electrical circuit upon contact with the specimen gear;

an encoder rotatably connected to the spindle and configured to output a rotation angle of the spindle;
an interrupt unit configured to detect an opening and closing of the electrical circuit and generate one or more interrupt
signals based on the opening and the closing of the electrical circuit; and

a measuring unit operatively coupled to the encoder and the interrupt unit, the measuring unit configured to start measurement,
and stop measurement of backlash based on the interrupt signal.

US Pat. No. 9,149,994

SYSTEMS FOR MOLDING NON-PNEUMATIC TIRES

Caterpillar Inc., Peoria...

1. A system for molding a non-pneumatic tire, the system comprising:
a lower mold portion including:
a lower backing plate;
a plurality of lower projections extending from the lower backing plate, wherein the lower projections are arranged in a first
predetermined pattern to correspond to a pattern of cavities in a first side of the tire;

a plurality of lower sleeves configured to at least partially cover the lower projections, the lower sleeves having an external
surface and an internal recess having an internal surface, wherein the internal surface of the lower sleeves is shaped substantially
similar to an external surface of the lower projections, and the external surface of the lower sleeves corresponds substantially
to an external surface of the cavities in the first side of the tire; and

at least one lower retention plate configured to be positioned proximate the lower backing plate and retain the lower sleeves
on the lower projections; and

an upper mold portion configured to be associated with the lower mold portion, the upper mold portion including:
an upper backing plate;
a plurality of upper projections extending from the upper backing plate, wherein the upper projections are arranged in a second
predetermined pattern to correspond to a pattern of cavities in a second side of the tire;

a plurality of upper sleeves configured to at least partially cover the upper projections, the upper sleeves having an external
surface and an internal recess having an internal surface, wherein the internal surface of the upper sleeves is shaped substantially
similar to an external surface of the upper projections, and the external surface of the upper sleeves corresponds substantially
to an external surface of the cavities in the second side of the tire; and

at least one upper retention plate configured to be positioned proximate the upper backing plate and retain the upper sleeves
on the upper projections.

US Pat. No. 9,102,312

SYSTEM FOR CONTROLLING A TRANSMISSION

Caterpillar Inc., Peoria...

1. A system for shifting a transmission from a first gear ratio to a second gear ratio, comprising:
a first clutch associated with the first gear ratio, the first clutch operating as an off-going clutch;
a second clutch associated with the second gear ratio, the second clutch operating as an on-coming clutch;
an additional clutch operating as an assisting clutch; and
a controller configured to:
engage the on-coming clutch and increase an amount of torque carried by the on-coming clutch;
engage the assisting clutch and increase an amount of torque carried by the assisting clutch;
disengage the off-going clutch and reduce an amount of torque carried by the off-going clutch; and
after disengaging the off-going clutch, disengage the assisting clutch and reduce the amount of torque carried by the assisting
clutch.

US Pat. No. 9,091,586

PAYLOAD DETERMINATION SYSTEM AND METHOD

Caterpillar Inc., Peoria...

1. A payload determination method associated with a machine, comprising:
a) raising a boom of the machine from a first position at a minimum lift angle of the boom to a second position at a maximum
lift angle of the boom;

b) determining first head-end and first rod-end pressures of a first actuator operably connected to the boom as the boom is
raised across a third position at a reference lift angle of the boom between the minimum and maximum lift angles;

c) determining first head-end and first rod-end pressures of a second actuator operably connected to a work tool of the machine
as the boom is raised across the third position;

d) lowering the boom from the second position to the first position;
e) determining second head-end and second rod-end pressures of the first actuator as the boom is lowered across the third
position;

f) determining second head-end and second rod-end pressures of the second actuator as the boom is lowered across the third
position; and

g) determining a weight of a payload carried by the work tool based on the first and second head-end pressures of the first
actuator, the first and second rod-end pressures of the first actuator, the first and second head-end pressures of the second
actuator, the first and second rod-end pressures of the second actuator, and a determined pitch angle of the machine, wherein
the payload is carried by the work tool during at least steps b, c, e, and f.

US Pat. No. 9,303,633

OVER-SPEED CONTROL SYSTEM AND METHOD

Caterpillar Inc., Peoria...

1. A hydraulic power control system, comprising:
an engine operating at an engine speed, the engine speed sensed by an engine speed sensor providing an engine speed signal;
a variable displacement pump connected to and operated by the engine, the variable displacement pump fluidly connected to
a first passageway and a second passage way, the variable displacement pump having a selectively variable displacement that
is adjusted in response to a pump displacement command signal;

a variable displacement hydraulic motor fluidly connected to the first and second passageways in a closed hydraulic loop with
the variable displacement pump, the variable displacement hydraulic motor operating by a flow of hydraulic fluid originating
from the variable displacement pump and passing through the first and second passageways, the variable displacement hydraulic
motor having a selectively variable displacement that is controlled in response to a motor control signal, the motor operating
at a motor speed, the motor speed is sensed by a motor speed sensor providing a motor speed signal;

a waste flow valve fluidly interconnecting the first and second passageways; and
a controller associated with the engine, the variable displacement pump and the variable displacement hydraulic motor, the
controller disposed to:

receive the engine speed signal and the motor speed signal;
calculate a speed ratio of engine speed to motor speed based on the engine and motor speed signals;
estimate a waste flow of hydraulic fluid from the pump that bypasses the motor as the flow of hydraulic fluid passes through
the waste flow valve based on the speed ratio; and

when an overrun condition of the engine is indicated by the engine speed signal, adjust the pump displacement command signal
based on the engine speed signal and the estimated waste flow of fluid to reduce a rotation speed of the pump and avoid an
over-speed condition of the pump, and adjust the motor displacement signal to effectively retard rotation of the variable
displacement hydraulic motor.

US Pat. No. 9,234,317

ROBUST SYSTEM AND METHOD FOR FORECASTING SOIL COMPACTION PERFORMANCE

Caterpillar Inc., Peoria...

1. A system for forecasting soil compaction comprising:
an user interface configured to receive compaction data;
a database configured to provide compaction data;
a controller configured to determine a machine performance characteristic based on compaction data; and
a communication device configured to communicate the compaction data between the database or between one or more machines;
and

wherein the compaction data includes a desired soil density input, a soil input, a machine characteristic, or a productivity
parameter.

US Pat. No. 9,140,224

ELECTROMAGNETIC ACTUATOR AND METHOD FOR CONTROLLING FLUID FLOW

Caterpillar Inc., Peoria...

1. An electromagnetic actuator for controlling fluid flow comprising:
an actuator housing having a central longitudinal axis and a pole housing portion;
a stator disposed within the pole housing portion having an inner pole member, a coil, and an outer pole member having a bore
with a fluid-contacting surface for transmitting high pressure fluid therethrough, with the outer pole member being disposed
radially between the pole housing portion and the inner pole member along a line extending perpendicularly from the longitudinal
axis,

wherein the coil is disposed around the inner pole member and arranged between the inner pole member and the outer pole member,
wherein the outer pole member has an opening therein for receipt of the inner pole member and the coil, the opening having
a generally oval-shaped cross-section, and

wherein the inner pole member is arranged within the pole housing portion and has an inner pole bore therethrough, the inner
pole bore being coaxial with the central longitudinal axis such that the inner pole bore is centrally aligned within the pole
housing portion and the actuator housing, and the inner pole bore is concentric with the outer pole member about the central
longitudinal axis; and

an armature moveable under the influence of a magnetic field generated by the stator and coil and operable to affect transmission
of fluid through the bore of the outer pole member and in contact with the fluid-contacting surface.

US Pat. No. 9,504,186

HEATPIPE IMBEDDED COLDPLATE ENHANCING IGBT HEAT SPREADING

Caterpillar Inc., Peoria...

1. A cold plate for a power circuit, the power circuit including a plurality of transistors, each transistor of the plurality
of transistors including a plurality of dies, the cold plate comprising:
a liquid cooling system,
the liquid cooling system including a plurality of cooling channels,
each of the plurality of cooling channels being aligned with at least one die of the plurality of dies, and
a heat sink associated with each of the plurality of cooling channels; and a plurality of heat pipes,
at least one of the plurality of heat pipes being aligned, substantially in parallel, with at least one of the plurality of
cooling channels and at least one die of the plurality of dies,

each of the plurality of heat pipes including a wick lining an interior of the heat pipe, a vapor flow area, and a fluid.

US Pat. No. 9,181,909

FUEL PUMP RETAINER

Caterpillar Inc., Peoria...

1. A fuel pump comprising:
a housing;
a rotatable pump shaft disposed within the housing, one end of the rotatable pump shaft being attachable to a gear; and
a retainer disposed within the housing and located about the rotatable pump shaft, the retainer comprising:
a first rim and a second rim, wherein the first rim and the second rim are spaced apart from each other; and
a side wall attached to and extending between the first rim and the second rim, the side wall having a plurality of apertures,
the side wall defining a first and second volume within the housing, wherein the plurality of apertures is configured to allow
a fluid flow from the first volume to the second volume while retaining particulate contaminants larger than a size of the
apertures within the first volume.

US Pat. No. 9,151,377

AXLE PORTING TO LEGS

Caterpillar Inc., Peoria...

1. An axle assembly comprising:
a bevel gear rotatable about a bevel gear axis;
a pinion gear meshed with the bevel gear; and
a center housing defining a center cavity in which the bevel gear is disposed, the center housing including an integral first
channel, an integral tube-like first conduit and an integral tube-like second conduit, the first channel having a first entrance
port into the center cavity disposed proximal to the bevel gear, the first channel extending from the entrance port in an
upward direction around a portion of the bevel gear, the first conduit configured to branch off of the first channel in a
first direction, and the second conduit configured to branch off of the first channel in a second direction, at least a portion
of the first conduit disposed above the entire bevel gear.

US Pat. No. 9,234,568

MULTI SPEED TRANSMISSION

Caterpillar Inc., Peoria...

1. A multi-speed transmission comprising:
a housing;
an input member and an output member;
four planetary gear trains comprising a first planetary gear train, a second planetary gear train, a third planetary gear
train and a fourth planetary gear train, wherein each of the planetary gear trains comprises a ring gear, a planetary carrier
and a sun gear;

an intermediate coupling member continuously connecting the sun gear of the second, third and fourth planetary gear sets;
and

six control elements, wherein each of the six control elements is operatively connected to at least one of the planetary gear
trains and selectively engageable to produce a set of different speeds between the input member and the output member, and
wherein the set of different speeds includes eight forward speeds and two reverse speeds wherein the first planetary gear
train is connected to the input member and at least two of the six control elements.

US Pat. No. 9,091,343

INFINITELY VARIABLE TRANSMISSION WITH CONTROLLED COASTING

Caterpillar Inc., Peoria...

1. A system for driving a machine comprising:
a user input device for inputting a desired throttle setting for the machine;
an infinitely variable transmission having a transmission ratio that is adjustable;
at least one sensor configured to determine an inclination of the machine relative to a reference plane; and
a controller in communication with the user input device to receive information relating to the desired throttle setting and
the sensor to receive information relating to the inclination of the machine; the controller being in communication with the
infinitely variable transmission and configured to control the transmission ratio, the controller being configured to determine
and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired
throttle setting is reduced more than a predetermined amount.

US Pat. No. 9,174,293

HARDFACING PROCESS AND PARTS PRODUCED THEREBY

Caterpillar Inc., Peoria...

1. A hardfacing process for a component subject to wear, comprising:
depositing a clad layer having a thickness greater than about 1 mm (0.04 in) on a steel body of the component using an arc
welding process, the steel body having a hardness between about 43 HRC and 60 HRC; and

heat treating the component after the cladding, the heat treating including;
austenizing the component;
quenching the component in a liquid bath; and
tempering the component after removing,
wherein quenching the component includes:
dropping the component which is at a temperature between about 875° C. (1607° F.) and 900° C. (1652° F.) into a water bath
maintained at a temperature between about 35° C. (95° F.) and about 41° C. (106° F.), and

removing the component from the liquid bath such that a residual temperature of the component is between about 100° C. (212°
F.) and 300° C. (572° F.), and

wherein tempering the component includes:
transferring the component at the residual temperature into a temper furnace maintained at a tempering temperature, and
maintaining a temperature of the component between about 143.3° C. (290° F.) and about 154° C. (309° F.) for a predetermined
period of time,

wherein depositing a clad layer includes creating a heat affected zone directly below the clad layer due to the depositing,
the heat affected zone being a region of the body where a lowest hardness is more than 40% lower than a base hardness of the
steel below the heat affected zone, and the heat treating includes heat treating the component such that the lowest hardness
of the heat affected zone is restored to within about 15% of the base hardness.

US Pat. No. 9,216,449

CONTROLLED CRIMPING METHOD AND SYSTEM

Caterpillar Inc., Peoria...

1. A system for crimping a first component onto a second component, the system comprising:
a first portion;
a second portion facing the first portion;
at least one actuator configured to move the first portion relative to the second portion to compress a die disposed between
the first portion and the second portion, the compression of the die causing the first and second components located in the
die to be crimped together; and

a controller connected to the at least one actuator and configured to:
directly measure an amount of deflection of the first portion while crimping, and
determine whether to stop the movement of the first portion by calculating a crimp dimension based on the measured amount
and determining whether a difference between the calculated crimp dimension and a desired crimp dimension is below a tolerance.

US Pat. No. 9,133,837

METHOD OF CONTROLLING A HYDRAULIC SYSTEM

Caterpillar Inc., Peoria...

11. A hydraulic system, comprising:
an engine;
a variable displacement pump, wherein a hydraulic power delivered by the pump is a function of a piston displacement of the
pump;

an implement fluidly coupled to the pump, the implement being operable by the power delivered by the pump;
a sensor configured to measure engine speed; and
a control system configured to identify an allowable power value that may be expended by the pump from a map that relates
allowable power value to engine speed, the control system also being configured to determine a desired power value, the desired
power value being a power value that is requested to operate the implement, the control system further being configured to
adjust the piston displacement to deliver a lower of the allowable power value and the desired power value to the implement.

US Pat. No. 9,217,353

MIXER FOR FLUID INJECTION SYSTEM

Caterpillar Inc., Peoria...

1. A mixer, comprising:
an impingement floor located within an intended fluid injection path and generally parallel with a flow direction;
a first side wall connected along a lengthwise edge of the impingement floor and generally parallel with the flow direction;
a second side wall connected along an opposing lengthwise edge of the impingement floor and generally parallel with the flow
direction; and

at least one shelf extending between the first and second side walls and generally parallel with the flow direction, the at
least one shelf having a plurality of vanes protruding toward and away from the impingement floor that promotes mixing of
an injected fluid,

wherein the impingement floor extends further upstream along the flow direction than the at least one shelf, and the plurality
of vanes extend downstream from the at least one shelf with respect to the flow direction.

US Pat. No. 9,216,783

CAP AND PIN RETENTION SYSTEM

Caterpillar Inc., Peoria...

1. A machine with a continuous tread comprising:
a first pair of plates in spaced relation to one another, the plates having corresponding first ends and second ends, the
second ends including coaxially aligned outer pin bores therethrough;

a second pair of plates in spaced relation to one another, the plates having corresponding first and second ends, the first
ends including coaxially aligned bushing bores therethrough, wherein the second pair of plates is disposed adjacent the first
pair of plates such that the first ends of the second pair of plates are disposed between the second ends of the first pair
of plates so as to coaxially align the outer pin bores with the bushing bores;

a tubular bushing including an inner pin bore between opposite ends of the tubular bushing, the ends being disposed in the
bushing bores of the first ends of the second pair of plates so as to form a segmented pin bore through the inner pin bore
and the outer pin bores;

a retention pin disposed in the segmented pin bore so as to pivotally connect the first and second pair of plates, the retention
pin having a head end and a locking end connected by a pin body, the head end being disposed in abutting relation with a first
external surface of the first pair of plates, the pin body disposed in the segmented pin bore, and the locking end extending
past a second external surface of the first pair of plates opposite the head end;

a retention cap having a cap body with a cap bearing surface and an outer surface, the cap body configured to engage the locking
end of the retention pin such that the cap bearing surface abuts the second external surface of the first pair of plates,
the cap body and the retention pin including a dowel pin bore extending from the outer surface at least partially through
the cap body and the retention pin; and

a dowel pin disposed within the dowel pin bore at least partially through the retention cap and the retention pin, the dowel
pin configured to limit axial movement of the retention pin relative to the segmented pin bore and the retention cap.

US Pat. No. 9,133,755

ENGINE COMPONENT INSTALLATION FEATURE AND METHOD

Caterpillar Inc., Peoria...

1. A thermostatic valve for an engine subassembly, the thermostatic valve configured to be positioned in a bore of a cylinder
head of the engine subassembly; the thermostatic valve comprising:
an upper radially extending first flange configured to extend between an upper mating surface of the cylinder head and an
elbow sleeve, and

a protrusive installation feature disposed circumferentially about the first flange, the protrusive installation feature extending
upwardly from the first flange and parallel to an axis of the bore of the cylinder head, the protrusive installation feature
configured to fit between a circumferential groove of the elbow sleeve and the upper mating surface of the cylinder head,
the protrusive installation feature configured to be positioned radially outward of the bore of the cylinder head and proximate
to the upper mating surface when the first flange is in proximity thereto.

US Pat. No. 9,322,146

JOYSTICK INPUT ARBITRATION

Caterpillar Inc., Peoria...

1. A method for generating a command for a work machine by arbitrating between inputs from a first input device and a second
input device, each located on a joystick of a work machine, comprising:
receiving a first input from the first input device on the joystick of a work machine;
receiving a second input from the second input device on the joystick of the work machine;
wherein said first input and said second input are capable of being received concurrently,
generating a first command for a first operation carried out by the work machine based on the first input from the first input
device if the first input has a non-zero value;

generating a second command for the first operation based on the second input from the second input device if the first input
has a zero value and the second input has a non-zero value;

arbitrating between the first command and the second command; and
executing the first operation based upon either one of the first command or the second command depending upon said arbitrating.

US Pat. No. 9,302,345

LASER MACHINING CALIBRATION METHOD

Caterpillar Inc., Peoria...

1. A calibration method, comprising:
locating a focal point of a laser relative to at least one reference datum of a workspace, the focal point being where the
laser produces machining, wherein locating the focal point further includes:

showing an image indicative of the focal point on a monitor, and
marking the focal point on the monitor in order to define a detection axis;
aligning the detection axis with a reference axis of a work piece;
machining at least one reference mark onto the work piece via the laser machining at the focal point; and
measuring an offset between the reference axis of the work piece and the at least one reference mark.

US Pat. No. 9,134,124

SYSTEM AND METHOD FOR ESTIMATION OF MACHINE POSITION

Caterpillar Inc., Peoria...

1. A system comprising:
a perception sensor configured to generate a signal indicative of scene data associated with an environment in a vicinity
of operation of a machine;

a first inertial measurement unit configured to generate a first signal indicative of a change in position of the machine;
a first localization module communicably coupled to the perception sensor and the first inertial measurement unit, the first
localization module configured to generate a first position estimate signal indicative of an estimated position of the machine;

a second inertial measurement unit configured to generate a second signal indicative of the change in position of the machine;
a second localization module communicably coupled to the perception sensor and the second inertial measurement unit, the second
localization module configured to generate a second position estimate signal indicative of the estimated position of the machine;
and

a position determination module communicably coupled to the first localization module and the second localization module,
the position determination module configured to:

determine a health of the first localization module and the second localization module based on one or more parameters indicative
of errors associated with the first and second inertial measurement units respectively; and

determine an estimated position of the machine based on the determined health of the first localization module and the second
localization module.

US Pat. No. 9,303,377

SNOW WING HARD LINK WITH ADJUSTABLE FLOAT CAPABILITY

Caterpillar Inc., Peoria...

1. A hard link connected to a moldboard of a machine, the hard link comprising:
a first range of float capability;
a second range of float capability, the second range of float capability providing a greater float height to the moldboard
than the first range of float capability;

a first structure, and a second structure movable relative to the first structure;
a first slot provided in the second structure, the first slot including a length which allows for the first range of float
capability; and

a second slot provided in the second structure, the second slot including a length which allows for the second range of float
capability, the length of the second slot being greater than the length of the first slot.

US Pat. No. 9,296,295

MACHINE CONTROL SYSTEM UTILIZING INERTIAL YAW SENSOR

Caterpillar Inc., Peoria...

1. A method of operating an articulating machine having a front portion, a rear portion attached to the front portion via
an articulation joint, and a plurality of traction devices operatively coupled to the front portion and the rear portion via
respective axle assemblies, comprising:
sensing a rotational speed of at least one of the plurality of traction devices with a speed sensor;
determining a ground speed of the machine relative to the operating surface as a function of the sensed rotational speed;
determining a ground speed signal associated with a first traction device as a function of the ground speed of the machine,
the ground speed signal indicative of a ground speed of the first traction device relative to the operating surface;

determining an ideal rotational target speed value for the first traction device as a function of the ground speed associated
with the first traction device, the ideal rotational target speed providing a maximum tractive efficiency for the ground speed;

determining a practical rotational target speed value associated with the first traction device as a function of the sensed
rotational speed of the first traction device;

determining an actual rotational target speed value based on a combination of the ideal rotational target speed value and
the practical rotational target speed value;

determining an articulation angle between the front portion and the rear portion of the machine;
determining an engagement force based on the ideal rotational target speed value and the determined articulation angle, wherein
the magnitude of the engagement force decreases as the magnitude of the articulation angle of the machine increases;

selectively reducing the rotational speed of the first traction device if the sensed rotational speed of the first traction
device is greater than the actual rotational target speed value for the first traction device by selectively engaging a hydraulically
actuated clutch assembly by selectively supplying fluid at a first fluid pressure based on the determined engagement force,
wherein the hydraulically actuated clutch assembly is associated with a differential gear set disposed within the axle assembly
for the first traction device; and

selectively increasing the pressure of the fluid supplied to the hydraulically actuated clutch assembly to a second pressure
greater than the first pressure after the clutch is initially engaged.

US Pat. No. 9,249,752

SYSTEM IMPLEMENTING LOW-REDUCTANT ENGINE OPERATION MODE

Caterpillar Inc., Peoria...

14. A method of treating exhaust, comprising:
combusting fuel to produce a power output and a flow of exhaust;
injecting a reductant into the exhaust flow to aid in the reduction of an exhaust constituent;
determining an amount of remaining reductant;
determining an amount of remaining fuel;
altering the combusting of fuel based on the determined amount of remaining reductant such that the remaining fuel is consumed
before the remaining reductant is consumed.

US Pat. No. 9,180,547

ROBOTIC WELDER HAVING FUME EXTRACTION

Caterpillar Inc., Peoria...

1. A fume extraction system for use with a robotic welder, comprising:
a robotic welder having a weld tip;
a variable vacuum source coupled in proximity to the weld tip; and
a controller including instructions relating a flow level of the vacuum source to a plurality of positions, the controller
being configured to:

retrieve the instructions relating the flow level of the vacuum source to the plurality of positions; and
vary the vacuum source based on the instructions.

US Pat. No. 9,115,608

VALVE LASH ADJUSTMENT SYSTEM

Caterpillar Inc., Peoria...

1. A valve lash adjustment system for setting a valve to a rocker arm clearance for a valve train associated with a particular
combustion cylinder for an engine, the valve lash adjustment system comprising:
a frame assembly including an engine head attachment portion and an instrument attachment portion, the engine head attachment
portion being removably attachable to the engine and the instrument attachment portion being selectively positionable relative
to the engine head attachment portion of the frame assembly;

an instrument assembly including at least one position sensor and at least one display unit, the at least one position sensor
being attached to the engine head attachment portion of the frame assembly and the at least one display unit being attached
to the instrument attachment portion of the frame assembly; and

a gap setting gauge assembly having a clip member, the clip member having first and second ends, the first end of the clip
being configured to be selectively disposed between the valve and the rocker arm, the second end of the clip member being
resiliently attached to the frame assembly,

wherein the frame assembly, the instrument assembly and the gap setting gauge assembly defining one detachable unit structured
and arranged to attach to a head of the engine, the instrument attachment portion of the frame assembly being structured and
arranged to be selectively moveable in response to a readout event of the at least one display unit.

US Pat. No. 9,290,217

VARIABLE HARDENING DEPTH IN TRACK LINK FOR A GROUND-ENGAGING TRACK

Caterpillar Inc., Peoria...

1. A ground-engaging track for a machine comprising:
a track chain assembly including a first track chain and a second track chain extending in parallel with the first track chain,
the first and second track chains each including a plurality of elongate track links having a lower mounting surface for mounting
a track shoe, and an upper rail surface configured to contact a rotating track-engaging element in the machine;

each elongate link of the plurality of elongate track links further including a lower hardness material forming the lower
mounting surface, and a sacrificial higher hardness material forming the upper rail surface, the lower mounting surface facing
away from the upper rail surface in a height direction, a hardness of the sacrificial higher hardness material being greater
than a hardness of the lower hardness material,

the sacrificial higher hardness material transitioning to the lower hardness material at a material interface within the elongate
link,

the sacrificial higher hardness material having a first thickness and a second thickness each of which extending in the height
direction from the upper rail surface to the material interface, the first thickness being different from the second thickness,
the first thickness having a first hardness extending therethrough, the second thickness having a second hardness extending
therethrough, wherein the first hardness is substantially equal to the second hardness.

US Pat. No. 9,291,089

TURBOCHARGER HAVING COMPRESSOR COOLING ARRANGEMENT AND METHOD

Caterpillar Inc., Peoria...

11. A turbocharger for use with an internal combustion engine, the turbocharger interconnected between an intake collector
and an exhaust collector of the internal combustion engine, the turbocharger comprising:
a turbine;
a compressor associated with the turbine, the compressor adapted to compress air or a mixture of air and to provide a compressed
charge to the intake collector, said compressor including a housing radially surrounding a compressor wheel, and a backplate
connected to the housing and enclosing the compressor wheel within an interior space of the housing;

a cooling fluid conduit fluidly connected to the backplate of the compressor at a location between the compressor wheel and
the backplate, said cooling fluid conduit adapted to provide a portion of the compressed charge provided by the compressor
back to the compressor through the backplate thereof;

an internal passage formed in the backplate, through which the flow of compressed charge is provided, wherein the internal
passage is disposed at an angle of about 55 degrees with respect to a rotational axis of the compressor wheel;

wherein a pressure differential is created between the location behind the compressor wheel and an outlet of the compressor,
when the compressor is operating, to draw a flow of compressed charge into the interior space of the housing, said flow passing
over and convectively cooling said compressor wheel before mixing with a main compressor flow and being provided back through
the compressor outlet.

US Pat. No. 9,110,454

MACHINE DETECTION SYSTEM

Caterpillar Inc., Peoria...

1. A method of mapping a machine having a work tool, comprising:
sensing an outer boundary of the machine and generating a first set of information indicative of the outer boundary of the
machine;

moving the work tool relative to the machine through substantially an entire range of motion of the work tool;
sensing an outer boundary of the work tool during movement of the work tool through substantially the entire range of motion
and generating a second set of information indicative of a location of the outer boundary of the work tool through substantially
the entire range of motion;

determining information indicative of a position of an object disposed proximate the machine; and
determining whether the information indicative of the position of the object is included in either the first or second sets
of information.

US Pat. No. 9,234,330

AUTOMATIC ARTICULATION BEHAVIOR DURING ERROR AND HIGH SPEED CONDITIONS

Caterpillar Inc., Peoria...

1. A method of operating a motor grader having front wheels that are steerable, the front wheels attached to a front frame,
the front frame and a rear frame pivotally connected at an articulation joint, the method comprising:
engaging at an electronic controller an automatic articulation control function that controls articulation of the motor grader
at the articulation joint based on a steering angle of the front wheels;

operating the motor grader at an articulation angle with a magnitude greater than a threshold angle between the front frame
and the rear frame responsive to instructions from the electronic controller;

determining at the electronic controller that a condition exists that indicates automatic articulation control function should
be disengaged;

responsive to the determination, configuring the automatic articulation control function to only allow decreasing the articulation
angle; and

decreasing the articulation angle of the motor grader until the articulation angle reaches the threshold angle.

US Pat. No. 9,151,424

CONNECTOR FOR CONNECTING HOSE COUPLER TO DRAIN KNOB

Caterpillar Inc., Peoria...

1. A connector for connecting a hose coupler to a drain knob, the connector comprising:
a base plate comprising an opening configured to allow engagement of the hose coupler to the base plate at a first side thereof;
an appendage extending axially from a second side of the base plate and disposed about the opening, the appendage having a
substantially oblong profile in a first plane disposed parallel to the base plate, the appendage having a convex face configured
to abut a concave portion of a sidewall of the drain knob; and

a lateral projection extending radially inward from the appendage, the lateral projection configured to abut an end face of
the drain knob.

US Pat. No. 9,468,875

FILTER SYSTEM AND FILTRATION METHOD FOR FLUID RESERVOIRS

Caterpillar Inc., Peoria...

1. A fluid reservoir adapted to enclose a fluid therewithin, the fluid reservoir comprising:
a reservoir body forming a reservoir volume and a header opening that is fluidly open to the reservoir volume;
a header connected to the reservoir body and disposed to seal the header opening;
a fluid draw conduit connected to the header and extending through the header between a sump location, the sump location being
within the reservoir volume, and a fluid draw port disposed external to the reservoir body;

a bag filter connected to and at least partially enclosing the header, the bag filter completely enclosing the sump location
of the fluid draw conduit within the reservoir volume such that, when fluid is drawn from the reservoir volume through the
sump location, said fluid is first filtered by the bag filter; and

a sump device disposed around the sump location of the fluid draw conduit, wherein the sump device forms a fluid inlet, and
a secondary filter disposed to filter fluid entering the fluid draw conduit through the fluid inlet of the sump device, wherein
a porosity of the secondary filter is larger than a porosity of the bag filter.

US Pat. No. 9,381,594

LASER CLADDING WITH A LASER SCANNING HEAD

Caterpillar Inc., Peoria...

1. A method for laser cladding a material onto a surface of a machine component using a laser scanning head with laser scanning
optics, the method comprising:
forming a molten bead of cladding material by directing a beam with the laser scanning optics over a bead scan on the machine
component; and

directing the beam with the laser scanning optics over a secondary scan on the machine component, the secondary scan being
offset from the bead scan at a predetermined distance on the machine component.

US Pat. No. 9,221,340

MACHINE CONTROL SYSTEM

Caterpillar Inc., Peoria...

27. A computer based system for controlling a machine having a transmission system, the computer based system comprising:
a communication interface communicating with a memory;
the memory configured to communicate with a processor; and
the processor, in response to executing a computer program, performs operations comprising:
receiving a signal indicative of a wheel speed of a wheel from a wheel speed sensor;
calculating a localized ground speed of the machine at an axle end at the wheel; and
modulating a parameter of a power source based, at least in part, on a comparison of the wheel speed with the localized ground
speed of the machine.

US Pat. No. 9,359,023

UNDERCARRIAGE ASSEMBLY

Caterpillar Inc., Peoria...

1. An undercarriage assembly, comprising:
a link assembly, including a plurality of laterally spaced pairs of track links pivotally connected to one another at pivot
joints to form an endless chain, wherein a plurality of the track links have substantially planar sides;

an idler, the idler including a solid disk with substantially planar sides and an outer tread surface engaging an inner portion
of the endless chain; and

a roller with at least one roller tread engaging the link assembly, wherein the roller includes outer guide flanges configured
to engage the link assembly, and the roller includes at least one central guide flange configured to engage the link assembly.

US Pat. No. 9,291,126

VALVE AND FILTER ASSEMBLY FOR A REGENERATION SYSTEM

Caterpillar Inc., Peoria...

16. A method of assembling a regeneration system configured for use with an internal combustion engine, wherein the regeneration
system includes: a housing defining an exhaust flow path and having an inlet configured to receive an exhaust flow from an
internal combustion engine and an outlet configured to direct the exhaust flow toward an exhaust aftertreatment component;
a combustion head coupled with the housing and configured to direct air and fuel to a combustion chamber in fluid communication
with the exhaust flow path; and a fuel supply passage defined within the combustion head and in fluid communication with the
combustion chamber, the method comprising steps of:
installing a valve and filter assembly in the fuel supply passage, wherein the valve and filter assembly includes an assembly
housing defining a reduced fuel supply passage, a filter material coupled with the assembly housing, and a check valve at
least partially disposed within the reduced fuel supply passage;

identifying a regeneration system fault indicating a check valve failure;
removing the filter material and the check valve simultaneously from the fuel supply passage by removing the valve and filter
assembly from the fuel supply passage; and

installing a replacement valve and filter assembly in the fuel supply passage.

US Pat. No. 9,244,464

MACHINE CONTROL SYSTEM HAVING AUTONOMOUS EDGE DUMPING

Caterpillar Inc., Peoria...

1. A control system for use with a machine operating at a worksite, the control system comprising:
an onboard contoller mountable to the machine;
a communicating device mountable to the machine;
an offboard controller in communication with the onboard controller via the communicating device; and
wherein the offboard controller is configured to:
receive information regarding a berm at a dump location of the worksite;
determine starting and ending points spaced apart on an edge of the berm based on the information;
determine a maximum orthogonal distance from a virtual line extending between the starting and ending points to the edge of
the berm;

selectively validate the starting and ending points based on the maximum orthogonal distance;
designate a center of the virtual line between validated starting and ending points as a dump target; and
generate instructions directed to the onboard controller designating, the dump target for use by the machine.

US Pat. No. 9,126,578

COOLING-BASED POWER LIMITING SYSTEM AND METHOD

Caterpillar Inc., Peoria...

1. A machine, comprising:
an engine;
an engine cooling system associated with the engine and configured to remove engine heat from the engine;
a transmission, the transmission connected to the engine and configured to transmit engine power from the engine to a driven
load, the transmission controlling an amount of engine power transmitted to the driven load in response to a transmission
command signal;

a controller associated with the engine and the transmission, said controller providing the transmission command signal, the
controller disposed to:

determine an engine operating condition including a current engine speed;
determine a transmission operating condition; and
adjust the transmission command signal to reduce the amount of engine power transmitted to the driven load, while the engine
continues to operate at the current engine speed, and when the engine operating condition indicates that the engine cooling
system removes insufficient heat from the engine, such that the amount of engine power transmitted to the driven load allows
for sufficient capacity in the engine cooling system to maintain an acceptable engine operating temperature and avoid engine
overheating.

US Pat. No. 9,303,321

CLADDING COMPOSITION WITH FLUX PARTICLES

Caterpillar Inc., Peoria...

11. A method of laser cladding, comprising:
mixing cladding powder particles, flux particles, and an organic solvent to form a slurry, wherein the cladding powder particles
are fabricated from at least one of a tool steel, a nickel based alloy, a cobalt based alloy, a copper based alloy, or a carbide
in a metal matrix;

drying the slurry to remove substantially all of the organic solvent from the slurry, wherein after the slurry is dried:
the flux particles have an average particle size of less than about 40 ?m; and
more than about 50 percent of the flux particles adhere to surfaces of the cladding powder particles; and
the cladding powder particles and flux particles form a cladding composition;
feeding the cladding composition to a laser cladding head at a rate of greater than about 20 g/min;
melting the cladding composition with a laser; and
forming a molten pool of the cladding composition on a substrate.

US Pat. No. 9,248,854

ELECTRO-HYDRAULIC STEERING CONTROL SYSTEM

Caterpillar Inc., Peoria...

1. A steering control system for a machine having steering components configured to turn in a first direction and a second
direction, a steering actuator operatively coupled to the steering components to turn in the first direction and the second
direction, a steering input device, a steering fluid source and a pilot fluid source, the steering control system comprising:
a steering circuit comprising a steering valve in fluid communication with the steering fluid source and movable between a
closed position, a first open position wherein the steering valve outputs steering fluid to the steering actuator to cause
the steering components to turn in the first direction, and a second open position wherein the steering valve outputs steering
fluid to the steering actuator to cause the steering components to turn in the second direction;

a primary control circuit in fluid communication with the steering circuit and configured to transmit pilot fluid to the steering
valve to cause the steering valve to move between the closed position, the first open position and the second open position,
the primary control circuit comprising a primary pilot valve in fluid communication with the pilot fluid source and movable
between a closed position that prevents transmission of pilot fluid to the steering circuit and an open position that allows
transmission of pilot fluid to the steering circuit, wherein the primary pilot valve includes a primary thermal bleed path
allowing pilot fluid to flow through the primary pilot valve and output to a pilot fluid drain line when the primary pilot
valve is in the closed position.

US Pat. No. 9,228,462

JACKET-COOLED EXHAUST MANIFOLD

Caterpillar Inc., Peoria...

1. An exhaust manifold comprising:
a plurality of exhaust gas inlets located on a first lateral side of an exterior wall of the exhaust manifold;
a longitudinal exhaust gas passageway formed by a longitudinal interior wall, wherein the plurality of exhaust gas inlets
allow exhaust gas to flow into and merge in the longitudinal exhaust passageway;

an exhaust gas outlet, wherein the exhaust gas outlet allows the exhaust gas from the longitudinal exhaust gas passageway
to exit the exhaust manifold;

a longitudinal coolant passageway located between the longitudinal interior wall and second lateral side, a top side, and
a bottom side of the exterior wall of the exhaust manifold; and

a plurality of air pocket indentations located on the first lateral side of the exterior wall of the exhaust manifold, wherein
the air pockets indentations are formed by depressions in the first lateral side of the exterior wall of the exhaust manifold.

US Pat. No. 9,388,906

SEAL ASSEMBLY

Caterpillar Inc., Peoria...

1. A seal assembly for sealing between a first member and a second member of a joint, the first member being able to pivot
about an axis of the joint relative to the second member, comprising:
a first ring for a first seal cavity of the first member;
a load ring for a second seal cavity of the second member;
a first seal ring of metal having a sealing surface extending in a radial direction, the first seal ring having a groove receiving
the first ring, the groove defined by a bottom surface and substantially parallel first and second side surfaces;

a resilient second seal ring having an annular seal lip; and
an inner member positioned circumferentially inside of the second member and in direct contact with the first seal ring,
wherein the first seal ring is held stationary in the first seal cavity and in direct contact with the first member, and the
second seal ring is forced axially by the load ring into axial sealing engagement with the first seal ring.

US Pat. No. 9,327,774

MOUNT APPARATUS FOR ROLLOVER PROTECTION SYSTEM

Caterpillar Inc., Peoria...

1. A cab enclosure mounting system for a construction vehicle comprising:
a lower mount configured to be secured to a construction vehicle frame having a support connected thereto;
an intermediate mount securely fastened to the support, the intermediate mount having an isolation mount attached thereto,
the isolation mount including a vibration damper therein;

an adapter mount, the adapter mount being adapted to be securely attached to the vibration damper and having a supplemental
support depending therefrom, the intermediate mount being configured to slidingly receive a portion of the supplemental support;
and

an upper mount configured to be securely attached to the adapter mount.

US Pat. No. 9,261,481

DIAGNOSTIC SYSTEM AND METHOD FOR NITROGEN OXIDE SENSOR

Caterpillar Inc., Peoria...

1. A system comprising:
a nitrogen oxide sensor configured to generate a first signal indicative of, a content of nitrogen oxides in an exhaust gas
over time;

a fuel flow sensor configured to generate a second signal indicative of a fuel quantity introduced to an engine over time;
and

a controller communicably coupled to the nitrogen oxide sensor and the fuel flow sensor, the controller configured to:
receive, from the nitrogen oxide sensor, the first signal indicative of a content of nitrogen oxides in the exhaust gas over
time;

receive the second signal indicative of a fuel quantity introduced to an internal combustion engine over time;
subtract a first order time derivative of the first signal from a first order time derivative of the second signal to arrive
at a calculated difference;

trigger an error counter when an absolute value of the calculated difference is greater than a predetermined threshold; and
determine a condition of the nitrogen oxide sensor based on a count of the error counter in a predetermined period of time;
and

communicate the determined condition of the nitrogen oxide sensor to an operator.

US Pat. No. 9,099,954

ENFORCED ZERO VOLTAGE LOOP

Caterpillar Inc., Peoria...

1. A method of controlling a motor to enforce a zero voltage loop using a controller and a converter circuit, the method comprising
the steps of:
determining one of a switching period, a fundamental cycle, and a current target threshold per phase leg of the motor having
at least one high voltage transition point;

determining applicability of the zero voltage loop;
determining a dwell period to be enforced at the transition point between an engagement of a first switch of the phase leg
of the converter circuit and an engagement of a second switch of the phase leg of the converter circuit, each of the first
switch and the second switch being selectively engageable between a first state and a second state;

engaging the first switch from the first state to the second state at the transition point; and
engaging the second switch from the first state to the second state after the transition point and upon expiration of the
dwell period when the zero voltage loop is applicable.

US Pat. No. 9,412,518

METHOD AND APPARATUS FOR MOUNTING A LARGE CAPACITOR

Caterpillar Inc., Peoria...

1. A capacitor package having a length, width, and height, and a center of mass comprising:
a first and second generally planar oppositely facing surface having said width and height;
the first and second surfaces having a mounting protrusion configured to form a portion of a bolted joint and having a first
protrusion surface and a second protrusion surface separated by a thickness; and

wherein the first protrusion surface of each mounting protrusion forms a clamp load plane that passes within approximately
10% of the height of a parallel plane containing the center of mass, said mounting protrusion includes two through-holes that
extend from the first protrusion surface to the second protrusion surface and material savers located between said through-holes.

US Pat. No. 9,355,462

MOTION ESTIMATION SYSTEM UTILIZING POINT CLOUD REGISTRATION

Caterpillar Inc., Peoria...

1. A computer-implemented method of estimating motion of a machine, comprising: determining, by one or more computer processors,
a first point cloud and a second point cloud corresponding to an environment in a vicinity of the machine; generating, by
the one or more computer processors, a first extended gaussian image (EGI) for the first point cloud and a second EGI for
the second point cloud; determining, by the one or more computer processors, a first EGI segment based on the first EGI and
a second EGI segment based on the second EGI; determining, by the one or more computer processors, a first two dimensional
distribution for points in the first EGI segment and a second two dimensional distribution for points in the second EGI segment;
and estimating, by the one or more computer processors, motion of the machine based on the first and second two dimensional
distributions; wherein the first EGI segment and the second EGI segment is a subset of points in the first EGI and the second
EGI obtained by filtering the points in the first EGI and the second EGI using a predefined criterion; wherein the filtering
includes:
defining a first threshold value and a second threshold value for a first coordinate axis, the first threshold value greater
than the second threshold value; and

filtering out points in the first and second EGI whose coordinate value for the first coordinate axis is greater than the
first threshold value and less than the second threshold value.

US Pat. No. 9,290,081

VENTILATION CAP

Caterpillar Inc., Peoria...

1. A ventilation cap comprising:
a tube portion configured to releasably engage with a vent pipe;
a vent portion extending from the tube portion to define a common pathway formed therein, the vent portion including at least
three interconnected adjacent sides, each of the sides including:

one or more upright ribs; and
a plurality of contiguous ribs laterally extending from the upright ribs to define openings in fluid communication with the
common pathway, the contiguous ribs at one or more sides having an intermediate segment with an increased cross-sectional
area, and tapering laterally from the intermediate segment to ends; and

an upper portion disposed above the vent portion and connected to an upper end of the upright ribs.

US Pat. No. 9,376,198

SERVICEABLE MARINE POD STEERING BRAKE SYSTEM

Caterpillar Inc., Peoria...

1. A serviceable steering system for a marine pod unit, comprising:
an upper pod unit mounted to a hull of a marine vessel and including a servo motor and a steering brake;
a lower pod unit rotatably mounted to said upper pod unit and including a prop section;
a controller electrically connected to said servo motor and to said steering brake via a servo harness connector mated to
a servo connector;

said servo motor configured to provide torque for rotating said lower pod unit relative to said upper pod unit upon receiving
a first signal from said controller via said servo harness connector;

said steering brake configured to prevent rotation of said lower pod unit when no signal is received, allow rotation of said
lower pod unit upon receiving a second signal from said controller via said servo harness connector, and allow rotation of
said lower pod unit upon receiving a third signal from a service harness connector,

wherein said service harness connector is manually connected in place of said servo harness connector.

US Pat. No. 9,410,510

AIR CLEANER ARRANGEMENT

Caterpillar Inc., Peoria...

1. An air cleaner arrangement comprising:
a filter element shaped as a polyhedron, the filter element and extending along and tapering with respect to an axis line
between a first end surface and a second end surface, the first end surface and the second end surface orthogonal to the axis
line, the first end surface being larger than the second end surface;

a housing including a tubular shell adapted to receive the filter element, the tubular shell extending between a first shell
edge and a second shell edge and having a cross-section corresponding in shape to the filter element shaped as a polyhedron,
wherein the housing includes a first housing cover disposed at the first shell edge and a second housing cover disposed at
the second shell edge, the second housing cover delineating an outlet port disposed therethrough, wherein the first end surface
is formed by a first end cap disposed on the first element end of the filter element and the second end surface is formed
by a second end cap disposed at the second element end, wherein the filter element comprises a filter media disposed about
a center tube extending between a first element end corresponding to the first end surface and a second element end corresponding
to the second end surface, the center tube generally concentric to the axis line, and wherein the plenum corresponds in part
to a gap having a triangular profile with a first leg corresponding to a first sidewall of the tubular shell, a second leg
corresponding to a portion of the second housing cover, and a hypotenuse corresponding to the first exterior surface of the
filter element.

US Pat. No. 9,388,829

HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR ENERGY RECOVERY

Caterpillar Inc., Peoria...

1. A hydraulic control system, comprising:
a work tool;
a motor configured to swing the work tool;
a tank;
a pump configured to draw fluid from the tank and pressurize the fluid;
a control valve operable to control fluid flow from the pump to the motor and from the motor to the tank via first and second
chamber passages to affect motion of the motor;

an accumulator;
an accumulator circuit configured to selectively direct fluid discharged from the motor to the accumulator for storage and
to direct stored fluid from the accumulator to the motor to assist the motor;

a selector valve configured to selectively connect a higher pressure one of the first and second chamber passages with the
accumulator;

a single pressure relief valve disposed within the accumulator circuit and configured to relieve pressure from opposing sides
of the motor;

a charge valve directly connected to the selector valve and fluidly connected to the accumulator; and
a discharge valve directly connected to the selector valve and fluidly connected to the accumulator in parallel with the charge
valve,

wherein the single pressure relief valve is fluidly connected with each of the accumulator, the charge valve, the discharge
valve, and the tank.

US Pat. No. 9,339,851

ROBOTIC CLEANING SYSTEM

Caterpillar Inc., Peoria...

1. A system for cleaning a component of a machine, the system comprising:
a cleaning head comprising:
a first reel configured to store a cloth;
a first and second idler placed in a spaced apart arrangement proximate to the first reel, the first and second idler configured
to receive the cloth from the first reel, wherein the cloth extends between the first idler and the second idler;

a tension sensor configured to provide a signal indicative of a tension on the cloth extended between the first idler and
the second idler;

a spray nozzle placed proximate to the cloth extended between the first idler and the second idler, the spray nozzle configured
to spray a cleaning agent onto the cloth; and

a second reel placed proximate to the first idler and second idler, the second reel configured to store the cloth received
from the first idler and second idler;

a robotic arm attached to the cleaning head, the robotic arm configured to move the cleaning head relative to the component
of the machine; and

a controller communicably coupled to the cleaning head and the robotic arm, the controller configured to:
position the cleaning head relative to the component based on one or more parameters associated with the component;
activate a movement of the first reel and the second reel to effectuate a dry cleaning cycle; and
selectively activate the spray nozzle to effectuate a wet cleaning cycle.

US Pat. No. 9,403,565

TRACK PIN RETENTION SYSTEM AND METHOD

Caterpillar Inc., Peoria...

1. A method of forming a track assembly, comprising:
disposing a track pin within a first through hole of a first track link and within a second through hole of a second track
link;

applying a force to a swaging tool positioned in a first position to plastically deform a first portion of the first track
link which surrounds the first through hole, to thereby form a first connection between the track pin and the first track
link;

repositioning the swaging tool form the first position to a second position; and
applying a force to the swaging tool positioned in the second position to plastically deform a second portion of the first
track link which surrounds the first through hole, to thereby form a second connection between the track pin and the first
track link, the second connection being formed after the first connection.

US Pat. No. 9,387,637

SYSTEMS AND METHODS FOR FORMING NON-PNEUMATIC TIRES

Caterpillar Inc., Peoria...

1. A method for molding a non-pneumatic tire, the method comprising:
placing a hub configured to be associated with the tire into a lower mold portion, such that a first portion of the hub provides
a seal with the lower mold portion, wherein the lower mold portion includes a plurality of first projections configured to
create cavities in the tire;

placing spacers on ends of at least some of the first projections;
placing an upper mold portion onto the lower mold portion and the hub to create a mold assembly having an interior, such that
a second portion of the hub provides a seal with the upper mold portion, wherein the upper mold portion includes a plurality
of second projections configured to create cavities in the tire, and wherein the spacers are located between ends of the at
least some first projections and respective ends of at least some of the second projections;

heating the mold assembly;
heating a molding material;
transferring the heated molding material into the interior of the mold assembly, such that the interior is substantially filled;
heating the mold assembly and molding material;
separating the upper mold portion from the lower mold portion; and
separating the tire from the lower mold portion, wherein the tire includes a plurality of cavities that extend from one side
of the tire to another side of the tire in an uninterrupted manner.

US Pat. No. 9,387,437

REDUCTANT SUPPLY SYSTEM

Caterpillar Inc., Peoria...

1. A reductant supply system comprising:
a reductant tank;
an injector supply conduit fluidly connecting the reductant tank with an injector;
a driving fluid source in fluid communication with the reductant tank via a dose driving conduit;
a purge conduit in fluid communication with the driving fluid source and the reductant tank;
a venturi disposed in the purge conduit; and
a valve in fluid communication with the reductant tank via the dose driving conduit and the purge conduit, wherein:
a first configuration of the valve affects fluid communication between the driving fluid source and the injector supply conduit
through the dose driving conduit and blocks fluid communication between the driving fluid source and the injector supply conduit
through the purge conduit, and

a second configuration of the valve affects fluid communication between the driving fluid source and the injector supply conduit
through the purge conduit and blocks fluid communication between the driving fluid source and the injector supply conduit
through the dose driving conduit.

US Pat. No. 10,030,693

PIN AND RETAINER LOCKING SYSTEM

Caterpillar Inc., Deerfi...

1. A retainer for fastening a pin in a pinned connection, the retainer comprising:an annular first plate having a plurality of first mating features extending inwards from the annular first plate;
an annular compressible section adjacent the annular first plate, the annular compressible section composed of a resilient material, the annular compressible section coaxially aligned to the annular first plate; and
an annular second plate adjacent the compressible section opposite the annular first plate, the annular second plate coaxially aligned to the annular first plate and the annular compressible section wherein the annular second plate has a plurality of second mating features, and the annular compressible section has a plurality of third mating features, wherein the plurality of first mating features, the plurality of second mating features, and the plurality of third mating features are circumferentially aligned, and wherein each first mating feature, each second mating feature, and each third mating feature is a rounded protrusion.

US Pat. No. 9,089,795

FLUID FILTER SYSTEM

Caterpillar Inc., Peoria...

1. A method of sealing a filter with respect to a base and sealingly separating a first fluid flow from a second fluid flow
radially outward of the first fluid flow, the method comprising:
establishing a first radially facing seal interface radially between the first and second fluid flows via a first seal member;
establishing a second radially facing seal interface radially outward of the second fluid flow via a second seal member; and
directing the first fluid flow from a central interior space of the filter to the base via an anti-prefill device associated
with an opening of the central interior space, the anti-prefill device having a tubular wall and a cap portion spaced axially
from the tubular wall and disposed over the opening of the central interior space, wherein the first fluid flow is directed
to the base via the cap portion, such that the fluid flows axially through the tubular wall and thereafter radially around
the cap portion.

US Pat. No. 9,187,878

HYDRAULIC CONTROL SYSTEM HAVING SWING OSCILLATION DAMPENING

Caterpillar Inc., Peoria...

1. A hydraulic control system, comprising:
a tank;
a pump configured to draw fluid from the tank and pressurize the fluid;
a swing motor;
an input device configured to generate a first signal indicative of a desired movement of the swing motor;
at least one control valve configured to selectively pass pressurized fluid from the pump to one side of the swing motor and
from an opposite side of the swing motor to the tank to drive the swing motor based on the first signal;

a pressure sensor configured to generate a second signal indicative of a pressure at the swing motor;
a speed sensor configured to generate a third signal indicative of a speed of the swing motor; and
a controller in communication with the input device, the at least one control valve, the pressure sensor, and the speed sensor,
the controller being configured to:

determine a condition of the input device based on the first signal;
make a comparison of at least one of the speed of the swing motor and the pressure at the swing motor with a threshold speed
and a threshold pressure, respectively; and

selectively open the at least one control valve to drain fluid from only a higher pressure side of the swing motor to the
tank based on the comparison when the condition of the input device is a neutral condition, the speed of the swing motor is
less than the threshold speed, and the pressure at the swing motor is greater than the threshold pressure.

US Pat. No. 9,571,024

MULTIPHASE MOTOR GENERATOR SYSTEM AND CONTROL METHOD THEREOF

Caterpillar Inc., Peoria...

1. A multiphase motor generator system, comprising:
a multiphase induction motor having a plurality of separate terminals;
a multiphase inverter coupled to a DC link voltage source and the plurality of terminals of the multiphase induction motor;
a plurality of current detectors configured to detect a plurality of currents that flow between the multiphase inverter and
the plurality of terminals of the multiphase induction motor; and

a controller coupled to the current detectors and the multiphase inverter, and configured to receive the detected currents
and output a plurality of control voltages to the multiphase inverter, the controller including:

a multiphase to direct-quadrature (dq) conversion unit configured to convert the plurality of currents into a direct-axis
(d-axis) current value Id and a quadrature-axis (q-axis) current value Iq in a rotating reference system;

a dq equivalent unit configured to determine a d-axis voltage command value V*d and a q-axis voltage command value V*q based on the d-axis current value Id and the q-axis current value Iq;

a dq to multiphase conversion unit configured to convert the d-axis voltage command value V*d and the q-axis voltage command value V*q into a plurality of command voltages; and

a pulse-width-modulator (PWM) converter configured to convert the plurality of command voltages to the plurality of control
voltages, and apply the plurality of control voltages to the multiphase inverter;

wherein the multiphase induction motor is an n-phase induction motor, with n being an integer that is multiple of 3,
the multiphase to dq conversion unit being configured to:
project n currents ip1, ip2, . . . , and ipn onto an ?-axis and a ?-axis in a stationary reference system to generate an ?-axis current i? and a ?-axis current i? represented by the following equation,


 where P represents the number of poles generated in the multiphase induction motor; and
project the ?-axis current i? and the ?-axis current i? onto a d-axis and a q-axis of the rotating reference system to generate the d-axis current value Id and the q-axis current value Iq represented by the following equation,


 where ?=?0+?t, ?0 represents an angle between the q-axis and the ?-axis at time 0, and ? represents a rotation speed of the n-phase induction
motor.

US Pat. No. 9,344,028

TRACTION MOTOR RETARDING FLUX REFERENCE

Caterpillar Inc., Peoria...

1. A method of adjusting electrical power application in a motor control system using an AC motor driven by an inverter bank
that is coupled to a resistive grid during retard operation, the method comprising:
developing a nominal flux estimate corresponding to a DC link voltage;
adjusting the nominal flux estimate with a scale factor; and
setting inverter operation to adjust motor torque based on the adjusted flux estimate.

US Pat. No. 9,126,645

TRACK CHAIN CARTRIDGE HAVING THRUST BEARINGS

Caterpillar Inc., Peoria...

1. A cartridge for a track chain, comprising:
a track pin;
a rotatable bushing and a rotatable bearing located on the track pin, the rotatable bushing including a first cutout housing
a first seal, and the bearing including a second cutout housing a second seal;

a first thrust bearing located on the track pin between the rotatable bearing and the rotatable bushing, the first thrust
bearing being configured to contact the rotatable bearing and configured to contact the rotatable bushing, the first thrust
bearing being configured to bear thrust loads and not radial loads;

a collar located at an end of the track pin, the collar being a solid element having no cutout; and
a second thrust bearing located between the rotatable bearing and the collar, the second thrust bearing being configured to
contact the rotatable bearing and configured to contact the collar, the second thrust bearing being configured to bear thrust
loads and not radial loads,

wherein the first seal is located radially outward of the first thrust bearing such that an outer gap exists between an outer
surface of the first thrust bearing and the first seal.

US Pat. No. 9,297,330

SYSTEM AND METHOD FOR ESTIMATING AND CONTROLLING TEMPERATURE OF ENGINE COMPONENT

Caterpillar Inc., Peoria...

1. An engine system comprising:
an ambient condition module configured to generate a signal indicative of a state of ambient air during an operation of an
engine;

an operational parameter sensor configured to generate a signal indicative of one or more operational parameters associated
with the engine, the one or more operational parameters including a temperature of an intake manifold of the engine; and

a controller operably coupled to the ambient condition module and the operational parameter sensor, the controller configured
to:

receive the signal indicative of the state of ambient air;
receive the signal indicative of the one or more operational parameters associated with the engine;
estimate a temperature of at least one of a valve, a piston, a liner, a cylinder head, and a pre-chamber of the engine as
a function of the received signals and parameters associated with fuel delivery to the engine; and

derate the engine maximum power rating when the estimated temperature of at least one of the valve, the piston, the liner,
the cylinder head, and the pre-chamber exceeds a respective predetermined threshold.

US Pat. No. 10,064,302

POWER INVERTER WITH BALANCED POWER FLOW FOR MULTIPLE ELECTRICAL MACHINES

Caterpillar Inc., Deerfi...

1. A power inverter assembly configured to provide a balanced power flow to each of a plurality of electrical machines, the power inverter assembly comprising:at least one heat sink having a top side and a bottom side;
a plurality of pairs of power semiconductor modules mounted along the top and bottom sides of at least one of the at least one heat sink for thermal exchange with the at least one heat sink; and
a plurality of gate driver boards configured to control a supply of direct current (DC) power to each of the plurality of pairs of power semiconductor modules;
each pair of power semiconductor modules being configured to switch DC electrical power on and off to one phase of one of a three phase alternating current (AC) electrical motor or a three phase AC electrical generator of the plurality of electrical machines,
a first pair of the plurality of pairs of power semiconductor modules being configured to supply electrical power to a first phase of a first one of a three phase AC electrical motor or generator, the first pair being located on and connected to one of a top side or a bottom side of one of the at least one heat sink for thermal exchange therewith,
second and third pairs of the plurality of pairs of power semiconductor modules being configured to supply electrical power to second and third phases, respectively, of the first three phase AC electrical motor or generator, the second and third pairs being located on and connected to the other of a top side or a bottom side of one of the at least one heat sink for thermal exchange therewith,
the first pair being symmetrically arranged relative to the second and third pairs such that the arrangement of the first, second, and third pairs of power semiconductor modules forms a geometric pattern with at least one of the second and third pairs at least partially overhanging the first pair,
a fourth pair of the plurality of pairs of power semiconductor modules being configured to supply electrical power to a first phase of a second one of a three phase AC electrical motor or generator, the fourth pair being located on an opposite side of a heat sink from the first pair;
fifth and sixth pairs of the plurality of pairs of power semiconductor modules being configured to supply electrical power to second and third phases, respectively, of the second one of the three phase AC electrical motor or generator, the fifth and sixth pairs being located on an opposite side of a heat sink from the fourth pair, and
the fourth pair being symmetrically arranged relative to the fifth and sixth pairs such that the arrangement of the fourth, fifth, and sixth pairs of power semiconductor modules forms a geometric pattern with at least one of the fifth and sixth pairs at least partially overhanging the fourth pair, and with at least a portion of the pairs of power semiconductor modules that supply electrical power to the second one of the three phase AC electrical motor or generator overlapping relative to a portion of the pairs of power semiconductor modules that supply electrical power to the first one of the three phase AC electrical motor or generator.

US Pat. No. 9,941,831

SWITCHED RELUCTANCE MOTOR POWER ESTIMATION COMPENSATION FOR VARIABLE DC-LINK VOLTAGE

Caterpillar Inc., Peoria...

1. A control system for a switched reluctance (SR) motor, the control system comprising:a Direct Current (DC) power source;
an inverter coupled to the DC power source towards an input side of the inverter, and coupled to the SR motor towards an output side of the inverter, wherein the inverter is configured to receive DC voltage from the DC power source and supply Alternating Current (AC) to the SR motor;
a user interface configured to enable an operator to specify a desired torque output, and generate signals indicative of the desired torque output;
a controller communicably coupled to the SR motor, DC power source, the inverter, and the user interface, wherein the controller is configured to:
convert a DC current from the AC current supplied to the SR motor by the inverter;
estimate an actual power output generated by the SR motor based at least on the DC voltage and the converted DC current;
determine a rotational speed of the SR motor;
estimate an actual torque output based on the actual power output and the rotational speed of the SR motor;
receive the signals indicative of the desired torque output from the user interface;
compare the actual torque output and the desired torque output to calculate a torque error;
adjust a torque output limit based on the calculated torque error, and
adjust the rotational speed of the SR motor based on the adjusted torque output limit.

US Pat. No. 9,404,239

SUB-BIN REFINEMENT FOR AUTONOMOUS MACHINES

Caterpillar Inc., Peoria...

1. A computer-implemented method for determining a cut location for a machine implement, comprising:
comparing, by a controller, a target cut volume to a projected cut volume associated with each boundary of a selected bin;
designating, by the controller, the cut location as the boundary most closely approximating the target cut volume if both
of the projected cut volumes at the boundaries are either greater than or less than the target cut volume; and

designating, by the controller, the cut location as an average of the boundaries if the projected cut volumes at the boundaries
are greater than and less than the target cut volume; and

instructing, by the controller, the machine to execute a cut at the designated cut location.

US Pat. No. 9,387,893

SOUND SUPPRESSED IDLER WHEEL ASSEMBLY

Caterpillar Inc., Peoria...

1. An idler wheel assembly for a mobile machine, comprising:
an idler body defining a cavity between a hub portion and a rim portion; and
a sound suppression device, including:
a first side plate attached to the idler body and enclosing at least a portion of the cavity to form a closed space;
a second side plate attached to the idler body;
a dampening member disposed between the first side plate and the second side plate; and
dampening material positioned inside the closed space and in contact with a surface of an inner portion of the rim portion.

US Pat. No. 9,175,984

MECHANISM OF INTERIOR PERMANENT MAGNET MACHINE INITIAL POSITION DETECTION

Caterpillar Inc., Peoria...

1. A system for determining an initial rotor position of an interior permanent magnet (IPM) machine having a rotor and a stator,
the system comprising:
a drive circuit in operative and electrical communication with each phase of the IPM machine; and
a controller in electrical communication with the drive circuit, the controller configured to engage the drive circuit to
selectively apply a voltage signal to each phase of the stator of the IPM machine, detect a current signal through each phase
corresponding to the applied voltage signal, and calculate the initial rotor position based on a least squares analysis between
at least the voltage signal, the current signal and a predefined inductance of the IPM machine including both self-inductance
and mutual inductance associated with the IPM machine, the controller configured to calculate the initial rotor position based
at least partially on the following equation:


US Pat. No. 9,086,081

HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR RECOVERY

Caterpillar Inc., Peoria...

14. A method of controlling a swing motor of a machine, comprising:
receiving input indicative of a difference between a desired speed and an actual speed of the swing motor;
determining if the swing motor is accelerating or decelerating based on the difference between the desired and actual speeds;
and

causing an accumulator to selectively receive pressurized fluid from the swing motor or supply pressurized fluid to the swing
motor only when the swing motor is accelerating or decelerating.

US Pat. No. 9,440,693

AIR-HARDENABLE BAINITIC STEEL PART

Caterpillar Inc., Peoria...

1. A method of producing a forged steel part, comprising:
providing a steel billet having a composition including, on a weight basis:
Carbon: 0.25-0.50 weight percent,
Manganese: 1.30-3.00 weight percent, and
Silicon: 0.30-2.50 weight percent;
heating the steel billet to an austenization temperature of the steel billet;
hot forging the steel billet to form the steel part including a first region and a second region; and
selectively cooling the hot forged steel part by air cooling the first region at a first cooling rate and air cooling the
second region at a second cooling rate that is less than the first cooling rate.

US Pat. No. 9,366,269

HYDRAULIC ACCUMULATOR HEALTH DIAGNOSIS

Caterpillar Inc., Peoria...

1. A system to diagnose a health of a hydraulic accumulator having a first fluid chamber configured to be filled with a working
fluid, a second fluid chamber configured to be filled with a compressible fluid, and a separator disposed therebetween, wherein
the hydraulic accumulator is capable of an associated pre-charge pressure, the system comprising:
a pressure sensor connected to the first fluid chamber;
a fluid source configured to connect with the first fluid chamber;
a data processor connected to the pressure sensor, the data processor configured to:
determine a first rate of pressure change, a second rate of pressure change different than the first rate, and a transition
pressure between the first and second rates; and

determine an approximated pre-charge pressure of the hydraulic accumulator based on the transition pressure; and
a comparator to compare the approximated pre-charge pressure with a pre-determined threshold range of pre-charge pressures
associated with the hydraulic accumulator, thereby to diagnose the health of the hydraulic accumulator.

US Pat. No. 9,140,123

CUTTING HEAD TOOL FOR TUNNEL BORING MACHINE

Caterpillar Inc., Peoria...

1. A ripper tool comprising:
a tool body and a pivot boss, the tool body having a plurality of socket cavities defined therein, and the pivot boss projecting
from and being integral with the tool body;

a plurality of cutting element inserts mounted to the tool body, the plurality of cutting element inserts being respectively
press fit in the plurality of socket cavities.

US Pat. No. 9,464,550

SYSTEM AND METHOD FOR RETAINING AFTERTREATMENT BRICKS

Caterpillar Inc., Peoria...

1. An aftertreatment module comprising:
at least one sleeve extending between a first end and an opposing second end along a sleeve axis, the at least one sleeve
including an opening at the first end;

one or more aftertreatment bricks inserted in the at least one sleeve, each of the aftertreatment bricks including a substrate
matrix and a mantle disposed around the substrate matrix;

a retention ring having a first width dimension less than a second width dimension associated with the opening of the sleeve,
the retention ring releasably engaged to the sleeve and in abutting contact with the mantle, the retention ring having a first
leg shaped to superimpose over and abut the first end of the sleeve, a second leg depending from the first leg and being shaped
to extend around an outer circumference of the first end of the sleeve, wherein an inner edge of the first leg corresponds
to the first width dimension;

wherein the aftertreatment brick is concentrically accommodated in the sleeve, and the retention ring is concentrically aligned
with the aftertreatment brick; and

wherein the substrate matrix has a cylindrical shape and extends between a first face and a second face, and the mantle is
tubular and extends between a first rim and a second rim, the first and second rims associated with an aftertreatment brick
diameter, the first rim and the second rim extending beyond the first face and the second face relatively.

US Pat. No. 9,297,145

EXCAVATION SYSTEM PROVIDING LINKAGE PLACEMENT TRAINING

Caterpillar Inc., Peoria...

1. An excavation system for a machine, comprising:
a work tool having a digging edge for penetrating and digging in a work surface at a material penetration angle;
at least one linkage connecting the work tool to the machine, and configured to actuate the work tool to the material penetration
angle, and each linkage having a linkage angle;

at least one linkage angle sensor associated with each linkage and configured to generate a linkage angle signal indicative
of the linkage angle of the associated linkage;

a display; and
a controller in communication with each linkage angle sensor and the display, the controller being configured to selectively
cause the display to notify a user of the excavation system when each linkage angle and the penetration angle are within desired
efficiency ranges, at least in part in response to each linkage angle signal.

US Pat. No. 9,366,272

HYDRAULIC SYSTEM HAVING LOW SPEED OPERATION

Caterpillar Inc., Peoria...

1. A hydraulic system comprising:
a tank;
a motor having a fluid inlet and a fluid outlet;
a pump configured to draw fluid at a low pressure from the tank and discharge the fluid at elevated pressures to the motor
via the fluid inlet;

a directional control valve disposed between the fluid outlet of the motor and the tank and operable to move between a flow
blocking position and a flow passing position, the directional control valve being configured to reduce a positive speed of
the motor below a lowest positive speed attainable through control of pump output;

a pressure control circuit configured to provide a pilot fluid flow at varying pressure to move the directional control valve;
a variable orifice disposed in a parallel relationship with the directional control valve; and
a fixed orifice disposed in a parallel relationship with the directional control valve and with the variable orifice.

US Pat. No. 9,434,428

TRACK PAD WEAR INDICATOR

Caterpillar Inc., Peoria...

1. A track pad for a track type mobile machine having a sprocket and an idler wheel, the track pad comprising:
a first link having a rail surface configured to engage the sprocket and the idler wheel;
a second link oriented generally parallel with the first link and having a rail surface configured to engage the sprocket
and the idler wheel;

a ground engaging element connected to the first and second links at a side opposite the rail surfaces; and
a wear indicator formed within the rail surface of at least one of the first and second links, wherein the wear indicator
includes a plurality of recesses formed within the rail surface of at least one of the first and second links.

US Pat. No. 9,409,613

TRACK SYSTEM FOR A MACHINE

Caterpillar Inc., Peoria...

1. A track pad for use in conjunction with a track system of a tracked machine including a plurality of track guiding rollers
having annular engagement surfaces, the track pad comprising a pad body having a wear surface, and a rail surface opposite
the wear surface, the rail surface being adapted for complementary positioning with at least one of the track guiding rollers
in the track system, the rail surface including a profile that is convex or concave, said profile being adapted to complement
the at least one track guiding roller presenting a profile that is the other of convex or concave, edges of the concave rail
surface profile or a central section of the convex rail surface profile defining the highest portion of the rail surface profile.

US Pat. No. 9,387,759

FLOW DIVIDER FREE WHEELING VALVE

Caterpillar Inc., Peoria...

1. A main valve comprising:
a body defining a supply port, a first exit port, a second exit port, an intermediate channel, a flow divider channel, a first
bypass channel, a second bypass channel, a free wheeling pilot channel, and a bypass pilot channel;

a free wheeling valve disposed in the body and fluidly connected to the supply port, the free wheeling valve operable between
a free wheeling mode that blocks fluid flow out of the first and second exit ports by blocking fluid flow between the supply
port and a bypass valve, and a drive assist mode that permits fluid flow out of the first and second exit ports by permitting
fluid from the supply port to flow to the bypass valve;

the bypass valve disposed in the body and fluidly connected to the free wheeling valve by the intermediate channel, the bypass
valve fluidly connected to the first and second bypass channels and a flow divider valve, the bypass valve having a flow dividing
mode that permits fluid communication between the free wheeling valve and the flow divider valve, and a bypass mode that permits
fluid communication between the free wheeling valve and the first and second bypass channels;

a flow divider valve disposed in the body and including a flow divider inlet fluidly connected to the bypass valve by the
flow divider channel, a first flow divider outlet fluidly connected to the first exit port, and a second flow divider outlet
fluidly connected to the second exit port, the flow divider inlet in fluid communication with the first and second flow divider
outlets;

a free wheeling pilot valve disposed in the body and fluidly connected to the free wheeling valve by the free wheeling pilot
channel; and

a flow divider bypass pilot control valve disposed in the body and fluidly connected to the bypass valve by the bypass pilot
channel.

US Pat. No. 9,376,992

DUAL FUEL INJECTOR AND FUEL SYSTEM

Caterpillar Inc., Peoria...

9. A fuel system comprising:
a liquid fuel supply including a liquid pressurizing mechanism and a liquid fuel common rail;
a gaseous fuel supply including a gas pressurizing mechanism and a gaseous fuel common rail;
a dual fuel injector coupled with each of the liquid fuel and gaseous fuel common rails and including an injector body defining
a liquid fuel outlet, a gaseous fuel outlet, a first and a second check control chamber in fluid communication with the liquid
fuel common rail, and a low pressure space;

the dual fuel injector further including a liquid fuel needle check movable within the injector body to open and close fluid
communications between the liquid fuel outlet and the liquid fuel common rail, and a gaseous fuel needle check positioned
side-by-side with the liquid fuel needle check and movable within the injector body to open and close fluid communications
between the gaseous fuel outlet and the gaseous fuel common rail; and

the liquid fuel and gaseous fuel needle checks each having a closing hydraulic surface exposed to a fluid pressure of the
first and second check control chambers, respectively, and an opening hydraulic surface exposed to a fuel pressure of the
liquid fuel common rail;

a first spring disposed around the liquid fuel needle check and positioned axially along the liquid fuel needle check between
the first check control chamber and the opening hydraulic surface of the liquid fuel needle check and a second spring disposed
around the gaseous fuel needle check and positioned axially along the gaseous fuel needle check between the first check control
chamber and the opening hydraulic surface of the gaseous fuel needle check, wherein the first spring and the second spring
are positioned side-by-side and axially off set; and

the dual fuel injector further including a liquid fuel injection control valve and a gaseous fuel injection control valve
positioned fluidly between the first and second check control chambers, respectively, and the low pressure space,

wherein the injector body further includes a tip piece having each of the liquid fuel and gaseous fuel outlets formed therein,
the tip piece defining a gas cavity being fluidly connected to the gaseous fuel outlet when the gaseous fuel needle check
opens the gaseous fuel outlet, and a liquid cavity being fluidly connected to the liquid fuel outlet when the liquid fuel
outlet check opens the liquid fuel outlet,

wherein the injector body further defines a spring chamber, the first spring and the second spring being disposed within the
spring chamber, and

wherein the gaseous fuel needle check extends through the tip piece and has a match clearance therewith, such that liquid
fuel intruding into the match clearance from the spring chamber prevents migration of the gaseous fuel from the gas cavity
to the spring chamber.

US Pat. No. 9,327,588

CONTROLLING A DRIVE SYSTEM HAVING A PLANETARY GEAR SET

Caterpillar Inc., Peoria...

1. A method of controlling a drive system operably connected to a power source and a transmission of a machine, comprising:
receiving, at a controller, a machine travel speed request;
determining, by the controller, an output speed of a variator, associated with the drive system, required to satisfy the travel
speed request at a current power source speed;

determining, by the controller, that a storage device operably connected to the variator has an amount of stored energy sufficient
to operate the variator at the variator output speed; and

providing torque to the transmission with the power source and the variator, wherein the controller further:
operates the variator at the variator output speed using stored energy from the storage device to provide torque to the transmission,
determines that the torque provided to the transmission with the power source and the variator is sufficient to satisfy the
travel speed request at the current power source speed;

determines that the variator output speed is within an acceptable variator output speed range,
determines that the storage device has adequate capacity to store additional energy, and
stores excess energy from at least one of the power source and the transmission in the storage device via the variator.

US Pat. No. 9,139,188

PREDICTION CONTROL STRATEGY FOR HYBRID MACHINERY

Caterpillar Inc., Peoria...

1. A method of using prediction control for a hybrid work machine to predetermine strategies for operating an engine and hybrid
power systems in the hybrid work machine, the method comprising:
accessing electronic position data for the hybrid work machine wherein the electronic position data comprises three dimensional
position data including a height above sea level;

accessing electronic plan data for the hybrid work machine wherein the electronic plan data is in three dimensions including
the height above sea level and comprises a start point, an end point and a proposed plan for traveling from the start point
to the end point;

accessing load data for the hybrid work machine;
determining a power strategy based at least on changes in the height above sea level along the proposed plan wherein the power
strategy comprises an engine management strategy including a speed of the engine for segments of the proposed plan and a hybrid
management strategy including when to engage the hybrid power systems for segments of the proposed plan, wherein determining
the power strategy comprises analyzing the electronic position data, the electronic plan data and the load data, and wherein
the segments include flat segments, negative grade segments and positive grade segments; and

executing the power strategy at a later time when the hybrid work machine is traveling along the propose plan based on a location
of the hybrid work machine along the proposed plan, including executing the engine management strategy to control the speed
of the engine for the segments of the proposed plan, and executing the hybrid management strategy to engage the hybrid power
systems for segments of the proposed plan.

US Pat. No. 9,050,725

TOOL CONTROL SYSTEM BASED ON ANTICIPATED TERRAIN

Caterpillar Inc., Peoria...

1. A tool control system, comprising:
a tool configured to shape a surface of a worksite;
a positioning system configured to determine a worksite position of a machine supporting the tool; and
a controller configured to:
receive a terrain profile containing a contour of the surface;
receive the worksite position of the machine;
determine a contour of the surface not yet traversed by the machine;
compensate for an expected effect on the contour caused by the tool when the machine traverses the contour, the effect being
based on an anticipated pitching or rolling of the machine that will result from movement of a center of gravity of the machine
from a first position on the worksite which has a first contour to a second position on the worksite which has a second contour
that is different than the first contour; and

move the tool and accommodate the effect before the machine traverses the contour, wherein tool movement is based primarily
on the anticipated pitching or rolling, and secondarily on input from at least one sensor.

US Pat. No. 9,784,208

CYLINDER LINER HAVING ROLL-BURNISHED RECESS

Caterpillar Inc., Peoria...

1. A method of making a cylinder liner, comprising:
fabricating a hollow generally cylindrical body that extends from a top end to a bottom end along a longitudinal axis, the
cylindrical body including an annular flange extending radially outwardly from the top end of the body and an annular recess
adjacent the flange at a side closest to the bottom end of the cylindrical body; and

inducing compressive residual stresses on the annular recess by performing a roll-burnishing operation in a direction along
the longitudinal axis on the annular recess,

wherein performing the roll-burnishing operation in the direction along the longitudinal axis on the annular recess includes
performing the roll-burnishing operation in the direction along a surface of a straight portion of the annular recess parallel
to the longitudinal axis.

US Pat. No. 9,391,555

SYSTEM AND METHOD TO CONTROL A SWITCHED RELUCTANCE MACHINE IN CONTINUOUS CONDUCTION

Caterpillar Inc., Peoria...

1. A control system for a switched reluctance (SR) machine having a rotor and a stator, the control system comprising:
a converter circuit operatively coupled to the stator and including a plurality of gates in selective communication with each
phase of the stator; and

a controller in communication with each of the stator and the converter circuit, the controller configured to command a fixed
dwell of a theta-on angle and a theta-off angle to the plurality of gates when the SR machine is in a continuous conduction
mode, wherein the theta-on angle and the theta-off angle may vary during the continuous conduction mode but an angular difference
between each stays constant.

US Pat. No. 9,360,334

SYSTEM AND METHOD FOR SETTING AN END LOCATION OF A PATH

Caterpillar Inc., Peoria...

1. A system for setting an end location of a path of operation of a machine at a work site, comprising:
a position sensor configured to determine a position of a path at the work site;
a controller configured to:
store a threshold characteristic of a pair of paths on opposite sides of the path of operation;
determine a position of a first path and a position of a second path, the first path and the second path defining the pair
of paths on opposite sides of the path of operation;

determine a physical characteristic of the pair of paths based upon the position of the first path and the position of the
second path;

determine whether the physical characteristic of the pair of paths is less than a threshold characteristic;
set the end location of the path of operation if the physical characteristic of the pair of paths is less than the threshold
characteristic; and

send a reverse command to the machine to prevent the machine from travelling past the end location;
wherein the first path includes a first centerline and the second path includes a second centerline, and the physical characteristic
is a distance between the first centerline and the second centerline.

US Pat. No. 9,302,206

FILTER ASSEMBLY

Caterpillar Inc., Peoria...

18. A replacement component for a filter assembly, the replacement component comprising:
a housing comprising a groove, the groove being a discontinuous groove forming a cavity on a surface of the housing; and
a filter element at least partially provided within the housing;
wherein the cavity on the surface of the housing is configured to substantially align with another cavity located on a base
of the filter assembly to define a discontinuous channel therebetween; and

wherein a cord member is removably inserted in the discontinuous channel defined between the cavities to detachably couple
the housing to the base.

US Pat. No. 9,298,188

MACHINE CONTROL SYSTEM HAVING AUTONOMOUS EDGE DUMPING

Caterpillar Inc., Peoria...

1. A control system for a machine, comprising:
a communicating device mounted on the machine;
a locating device mounted on the machine and configured to generate a first signal indicative of a location of the machine;
a sensor mounted on the machine and configured to generate a second signal indicative of contact of the machine with a berm;
an onboard controller mounted on the machine and configured to regulate operations of the machine; and
an offboard controller configured to receive information from the locating device, the sensor, and the onboard controller
via the communicating device, the offboard controller being configured to:

generate a first set of coordinates of a dump target;
assign the first set of the coordinates to the onboard controller for use in regulating the machine;
generate a tolerance zone extending from the first set of coordinates, a width of the tolerance zone increasing with an increasing
distance from the berm;

instruct the onboard controller to control the machine such that a lengthwise center of a rear axle of the machine remains
within the tolerance zone during a reverse travel of the machine toward the dump target;

detect contact of the machine with the berm based on the second signal during the reverse travel;
generate a second set of coordinates of the dump target to correspond with a location of the autonomous machine at a time
of contact detection; and

assign the second set of coordinates for all subsequent use of the dump target.

US Pat. No. 9,222,487

TANK BREATHER ASSEMBLY AND MOUNTING CONFIGURATION

Caterpillar Inc., Peoria...

1. A breather assembly, comprising:
a mounting collar having a first end and an opposing second end, the first end of the mounting collar being connected to a
distal end of a fluid tank spout;

a breather insert connected to the second end of the mounting collar and having a perforated screen extending a distance past
a base end of the fluid tank spout, wherein the perforated screen includes:

a lower half and an upper half, the upper half not extending past the first end of the mounting collar; and
apertures arranged in only the lower half, wherein the apertures extend at least a first distance above the base end of the
fluid tank spout, and a second distance below the base end of the fluid tank spout, wherein the first distance is greater
than the second distance; and

a breather cap having a first end and an opposing second end, the first end of the breather cap being connected to the breather
insert and having a passage in communication with a hollow center of the mounting collar.

US Pat. No. 9,506,435

SOLENOID ACTUATOR AND FUEL INJECTOR USING SAME

Caterpillar Inc., Peoria...

1. A fuel injector comprising:
an injector body defining a fuel inlet, a drain outlet and a nozzle outlet;
a direct operated check valve positioned in the injector body and including a needle valve member with an opening hydraulic
surface exposed to fluid pressure in a nozzle supply passage, and a closing hydraulic surface exposed to fluid pressure in
a needle control chamber, and the needle valve member being movable between a first position at which the nozzle supply passage
is blocked to the nozzle outlet, and a second position at which the nozzle supply passage is open to the nozzle outlet;

a needle control valve positioned in the injector body and including a control valve member movable between a first position
at which the needle control chamber is fluidly connected to the drain outlet, and a second position at which the needle control
chamber is fluidly blocked to the drain outlet; and

a solenoid actuator positioned in the injector body and including a stator assembly and an armature assembly coupled to the
control valve member,

the stator assembly including
a top piece that defines a pin bore,
a fragile highly magnetic core extending between a top end adjacent the top piece and an armature end,
a centerpiece extending completely through the fragile highly magnetic core and having a first end received in the pin bore
and a second end defining a core shield disposed between the fragile highly magnetic core and the armature assembly, and

a nonmagnetic insert attached to the centerpiece and configured to contact the armature assembly when the solenoid actuator
is in an energized state and to be out of contact with the armature assembly when the solenoid actuator is in a de-energized
state,

wherein the core shield defines an insert cavity and the non-magnetic insert is mounted in the insert cavity.

US Pat. No. 9,354,220

ENGINE SYSTEM HAVING FUEL QUALITY SENSOR

Caterpillar Inc., Peoria...

1. A fuel quality monitoring sensor, comprising:
a single sensing element configured to sense a thermodynamic property of an unknown mixture of gaseous fuel;
a heating element configured to increase a temperature of the unknown mixture of gaseous fuel at the single sensing element
to multiple different temperature levels; and

a microprocessor configured to calculate a fuel parameter of the unknown mixture of gaseous fuel as a function of only the
thermodynamic property sensed at the multiple different temperature levels and no other sensed property.

US Pat. No. 9,279,232

FRONT HEAD NUT POCKET CONFIGURATION FOR HYDRAULIC HAMMER

Caterpillar Inc., Peoria...

1. A fluid powered hammer assembly, comprising:
a power cell, a piston configured for reciprocal movement along an axis by the power cell, a hammer tool having a first end
juxtaposed against the piston for accommodating cyclic impacts by the piston, the first end being contained within a housing
and a second end extending from the housing, the power cell and the housing being axially secured together by a plurality
of tie rods and tie rod nuts secured to ends of the tie rods; the housing having exterior nut pockets, and the nuts being
contained within the nut pockets;

wherein an exterior body portion of each tie rod nut is circular, defining a fixed radius;
wherein each nut pocket is defined by a circumferentially extending interior wall sized to receive one tie rod nut, the interior
wall defining variable radii; and

wherein the exterior body portion of each tie rod nut is configured to engage the interior wall of one corresponding nut pocket
in at least two spaced apart areas of the nut pocket.

US Pat. No. 9,266,513

FRONT PARK BRAKE PROTECTION CONTROLS

Caterpillar Inc., Peoria...

1. An earth-moving machine comprising:
a plurality of ground-engaging elements;
a first parking brake configured to brake a first subset of the plurality of ground-engaging elements;
a second parking brake configured to brake a second subset of the plurality of ground-engaging elements, the second subset
being distinct from the first subset; and

a controller configured to sense engagement of the first parking brake and to engage the second parking brake when the first
parking brake is engaged if one or more machine state criteria are also met.

US Pat. No. 9,217,355

SENSOR MOUNTING ARRANGEMENT

Caterpillar Inc., Peoria...

1. An arrangement for mounting at least one electrical component to a portion of an aftertreatment module, the arrangement
comprising:
at least one standoff member coupled between the electrical component and the portion of the aftertreatment module;
an enclosure substantially surrounding at least three sides of the electrical component;
at least one first spacer disposed between the electrical component and the enclosure;
at least one fastener configured to couple the electronic control unit the enclosure; and
at least one second spacer disposed between a distal end of the at least one fastener and the electrical component,
wherein the at least one third spacer comprises a thermally insulating material.

US Pat. No. 9,096,211

CONTROL SYSTEM HAVING POWERTRAIN LOCK

Caterpillar Inc., Peoria...

1. A powertrain control system for a mobile machine, comprising:
an engine;
a continuously variable transmission operatively coupled to the engine;
an operator input device configured to generate a signal indicative of a desired speed of the engine;
a travel speed sensor configured to generate a signal indicative of a travel speed of the mobile machine;
a feature selector usable by an operator to select activation of a powertrain control feature; and
a controller in communication with the engine, the continuously variable transmission, the operator input device, the travel
speed sensor, and the feature selector, the controller being configured to:

make a determination that the operator has selected activation of the powertrain control feature via the feature selector;
lock a speed of the engine based on the determination and the signal;
lock a torque output of the continuously variable transmission based on the determination and the locked speed of the engine;
determine, based on the signal from the travel speed sensor, that a current travel speed of the mobile machine is associated
with high-speed travel during which non-travel related machine functions are not used; and

responsively reduce the speed of the engine below the locked speed to a more fuel-efficient speed.

US Pat. No. 9,371,784

DUAL FUEL SYSTEM HAVING A DAMPER

Caterpillar Inc., Peoria...

1. A dual fuel system for an engine, comprising:
a first fuel supply providing a first fuel to the engine;
a second fuel supply providing a second fuel;
a regulator configured to pass the second fuel from the second fuel supply to the engine, the regulator also being in fluid
communication with the first fuel supply; and

a damper in fluid communication with the first fuel supply and an output of the regulator,
the damper including at least one piston having a first end in contact with the first fuel and a second end in contact with
the second fuel, and

a diameter of the first end being smaller than a diameter of the second end.

US Pat. No. 9,295,933

FILTER ELEMENT AND FILTER ASSEMBLY HAVING TWO FILTRATION ZONES

Caterpillar Inc., Peoria...

14. A filter assembly comprising:
a housing configured to be coupled to an intake duct and a recirculation duct; and
a filter element received in the housing, the filter element including:
filter media having an elongated hollow passage extending along a longitudinal axis and extending between a first end and
a second end, the filter media having an exterior surface,

a first fin associated with and extending radially from the exterior surface of the filter media, the first fin extending
longitudinally at least partially between the first end and the second end of the filter media, and

a second fin associated with and extending radially from the exterior surface of the filter media, the second fin extending
longitudinally at least partially between the first end and the second end of the filter media,

wherein the filter media includes a first filtration zone extending partially around the hollow passage and between the first
fin and the second fin, the first filtration zone being associated with a first portion of the filter media, and

wherein the filter media includes a second filtration zone extending partially around the hollow passage and between the first
fin and the second fin, the second filtration zone being associated with a second portion of the filter media,

wherein the first filtration zone is configured to filter air received from the intake duct, and the second filtration zone
is configured to filter air received from the recirculation duct.

US Pat. No. 9,234,488

QUILL CONNECTOR FOR FUEL SYSTEM AND METHOD

Caterpillar Inc., Peoria...

1. A quill connector for a fuel system in an internal combustion engine, the quill connector comprising:
an elongate quill body defining a longitudinal axis extending between a proximal body end having a fuel inlet formed therein,
and a distal body end having a fuel outlet formed therein;

the elongate quill body further defining a fuel conduit fluidly connecting the fuel inlet with the fuel outlet, and the fuel
conduit including a proximal accumulator segment for containing a reserve of a pressurized fuel, and a distal injector supply
segment for supplying the pressurized fuel to a fuel injector, a volume of the proximal accumulator segment being greater
than a volume of the distal injector supply segment;

a flow limiter subassembly for limiting oversupplying of the pressurized fuel, the flow limiter subassembly including
a guide component positioned within the proximal accumulator segment,
a seat component including a head captive within the guide component and a neck extending in a distal direction from the head
into the distal injector supply segment, wherein the seat component is attached to the elongate quill body and supporting
the guide component in fixed relation to the elongate quill body along the longitudinal axis and wherein a distal end of the
guide component is disposed between the head of the seat component and an inner surface of the elongate quill body, and

a hydraulically actuated valve and a biaser each positioned within the guide component; and
the biaser being held in compression between the hydraulically actuated valve and the seat component, and the hydraulically
actuated valve being movable in opposition to a biasing force of the biaser from a first position to a closed position at
which the hydraulically actuated valve contacts the seat component to interrupt a flow of the pressurized fuel from the proximal
accumulator segment to the distal injector supply segment.

US Pat. No. 9,213,331

REMOTE CONTROL SYSTEM FOR A MACHINE

Caterpillar Inc., Peoria...

1. A system for remotely operating a machine, the machine being configured to perform a plurality of different operations,
the system comprising:
a portable computing device, the portable computing device being removably mountable at the machine and at a remote control
console, the portable computing device including a portable device controller;

the machine including:
a plurality of sensors for generating first and second signals, the first signals being indicative of an operation being performed
by the machine and the second signals being indicative of operating conditions of the machine;

a visual image sensor for generating visual image signals indicative of a point of view relative to the machine;
a machine mounting location for removably mounting the portable computing device thereat;
a machine instrument array including, upon operatively mounting the portable computing device at the machine mounting location,
a machine display device and a machine input device, the machine display device being configured to display information related
to operation of the machine, the machine input device being configured to receive an input command from an operator; and

a remote control console configured to control the machine remotely, the remote control console including:
a console mounting location for removably mounting the portable computing device thereat;
a console instrument array including, upon operatively mounting the portable computing device at the console mounting location,
a console display device and a console input device, the console display device being configured to display information related
to operation of the machine, the console input device being configured to receive an input command from an operator;

a point of view display for displaying an image of the point of view relative to the machine; and
a controller including the portable device controller, and upon operatively mounting the portable computing device at the
machine, the controller is configured to:

store a plurality of configurations of the machine instrument array;
receive first and second signals from the plurality of sensors of the machine;
determine which of the plurality of different operations is being performed based upon the first signals;
determine the operating conditions of the machine based upon the second signals;
for each operation being performed and each operating condition, select one of the plurality of configurations of the machine
instrument array;

transmit a plurality of machine signals to the machine instrument array indicative of the operating conditions of the machine;
and

display the operating conditions of the machine on the machine instrument array using the selected configuration of the machine
instrument array; and

upon operatively mounting the portable computing device at the remote control console, the controller is further configured
to:

store a plurality of configurations of the console instrument array;
receive first and second signals from the plurality of sensors of the machine;
determine which of the plurality of different operations is being performed based upon the first signals;
determine the operating conditions of the machine based upon the second signals;
for each operation being performed and each operating condition, select one of the plurality of configurations of the console
instrument array, the configuration of the console instrument array being generally identical to the configuration of the
machine instrument array;

transmit visual image signals indicative of the point of view relative to the machine to the remote control console;
display point of view images on the point of view display based upon the visual image signals;
transmit signals from the remote control console to the machine to direct the machine to perform desired operations;
transmit a plurality of console signals to the console instrument array indicative of the operating conditions of the machine;
and

display the operating conditions of the machine on the console instrument array using the selected configuration of the console
instrument array.

US Pat. No. 9,096,115

SYSTEM AND METHOD FOR ENERGY RECOVERY

Caterpillar Inc., Peoria...

1. An energy transfer system comprising:
a prime mover;
a power transfer mechanism operatively connected to the prime mover;
a first system, the first system including a first pump-motor operatively connecting the first system to the power transfer
mechanism, the first pump-motor being selectively driven by and providing power to the power transfer mechanism and being
configured to selectively provide and receive a first pressurized fluid, a first operational component operatively connected
to the first pump-motor;

a first regenerative system operatively connected to the first pump-motor and being configured to recover regenerated energy
from the first system;

a second system, the second system including a second coupling component operatively connecting the second system to the power
transfer mechanism, a second operational component operatively connected to the second coupling component, the second operational
component being selectively driven by and providing power to the power transfer mechanism;

a second regenerative system operatively connected to the second operational component and being configured to recover regenerated
energy from the second system; and

an energy storage system operatively connected to the power transfer mechanism and being configured to store energy including
the regenerated energy recovered by the first regenerative system and the second regenerative system.

US Pat. No. 9,086,061

ENERGY RECOVERY HYDRAULIC SYSTEM

Caterpillar Inc., Peoria...

1. A hydraulic system comprising:
a hydraulic actuator;
a pump configured to supply pressurized fluid to the hydraulic actuator; and
an energy recovery system including a hydraulic motor, a charge valve and an accumulator configured to store fluid from the
hydraulic actuator, the charge valve being operatively connected between the hydraulic actuator and the accumulator and between
the accumulator and the hydraulic motor and being configured to selectively place the hydraulic actuator in fluid communication
with the accumulator and to selectively place the accumulator in fluid communication with the hydraulic motor; and

a directional valve operatively connected between the pump and the hydraulic actuator, the directional valve being configured
to selectively place the pump in fluid communication with the hydraulic actuator and being configured to selectively direct
the flow of hydraulic fluid exiting the hydraulic actuator to the charge valve in an energy recovery mode.

US Pat. No. 9,243,537

EXHAUST AFTERTREATMENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING SAME

Caterpillar Inc., Peoria...

16. A method for operating an exhaust gas aftertreatment system for an engine, the exhaust gas aftertreatment system including:
an exhaust valve assembly having a first port, a second port, and a third port, the exhaust valve assembly being configured
to effect selective fluid communication between the first port, the second port, and the third port,

an exhaust conduit fluidly coupled to an exhaust port of the engine and fluidly coupled to the first port of the exhaust valve
assembly,

an exhaust aftertreatment device fluidly coupled to the second port of the exhaust valve assembly,
a bypass conduit fluidly coupled to the third port of the exhaust valve assembly, the bypass conduit configured to bypass
a flow of exhaust around the exhaust aftertreatment device; and

a reductant supply in selective fluid communication with the exhaust conduit,
the method comprising:
receiving a flow of exhaust gas at the first port of an exhaust valve assembly;
operating the engine in a substantially non-premixed mode; and
regenerating the exhaust aftertreatment device while the engine operates in the substantially non-premixed mode according
to a first regeneration procedure, including

delivering a flow of reductant from the reductant supply to the exhaust aftertreatment device,
effecting fluid communication between the first port and the second port, and
blocking fluid communication between the first port and the third port.

US Pat. No. 9,227,679

TRACK LINK CONNECTOR WITH TEXTURED REGION

Caterpillar Inc., Peoria...

1. A track link connector, comprising:
an elongate, substantially cylindrical body having a length dimension and including a substantially annular exterior surface
and first and second opposing end portions;

a textured region extending less than 360 degrees around a circumference of the exterior surface of the body at one of the
end portions thereof; and

an untextured region extending around the circumference of the exterior surface of the body adjacent to the textured region
in a circumferential direction,

wherein the body includes a substantially constant diameter at the circumference that includes the textured region and the
untextured region, and

wherein the textured region includes a first surface roughness and the untextured region includes a second surface roughness,
the first surface roughness being greater than the second surface roughness.

US Pat. No. 9,217,238

AUTOMATIC ARTICULATION MACHINE STATES

Caterpillar Inc., Peoria...

1. A method of managing articulation in an articulated machine using an electronic controller, the method comprising:
determining, at the electronic controller, that the articulated machine is operating at a groundspeed below a minimum threshold
speed; and

responsive to determining that the articulated machine is operating below the minimum threshold speed, disabling, at the electronic
controller, an automatic articulation control function when one of either a first state or a second state is true,

the first state being a transmission of the articulated machine being in neutral, and
the second state being a mode selector set continuously on from prior to a machine key cycle or a machine power cycle.

US Pat. No. 9,216,741

LOCK UP CLUTCH CONTROLS—HIGH IDLE SET POINT

Caterpillar Inc., Peoria...

1. An engine control system, comprising:
a torque converter;
an engine operatively connected to the torque converter;
a transmission operatively connected to the torque converter;
a lock-up clutch housed in the torque converter wherein the lock-up clutch is configured to mechanically connect the engine
and the transmission when the lock-up clutch is engaged;

an engine speed sensor configured to obtain a prior engine speed which is measured prior to engagement of the lock-up clutch;
a transmission speed sensor configured to obtain a prior transmission speed which is measured prior to the engagement of the
lock-up clutch;

an engine control module configured to:
determine a desired engine speed at a speed lower than the prior engine speed;
lower a speed of the engine to the desired engine speed at least one of just prior to the movement of the lock-up clutch and
as the lock-up clutch moves toward the engagement; and

wherein the engine control module is further configured to determine the desired engine speed as a function of increase in
efficiency of the torque converter due to the lock-up clutch engagement.

US Pat. No. 9,180,921

IDLER WHEEL ASSEMBLY

Caterpillar Inc., Peoria...

1. An idler wheel assembly for a track-type machine comprising:
a circular body including:
a central hub portion;
an annular flange portion integral with the central hub portion; and
a circumferential rim portion to define an annular cavity along with the central hub portion and the annular flange portion;
a sound dampening member disposed in the annular cavity; and
a retainer plate positioned adjacent to the sound dampening member,
wherein the retainer plate is attached to the central hub portion and the circumferential rim portion of the circular body
by welding at a welded portion, and

wherein the sound dampening member includes an annular chamfered surface at a circumferential surface thereof to accommodate
the welded portion.

US Pat. No. 9,175,651

DUAL FUEL SYSTEM FOR INTERNAL COMBUSTION ENGINE AND LEAKAGE LIMITING SEAL STRATEGY FOR SAME

Caterpillar Inc., Peoria...

1. A dual fuel system for an internal combustion engine comprising:
a liquid fuel supply;
a gaseous fuel supply;
a fuel injector including an injector body defining a liquid fuel passage in fluid communication with the liquid fuel supply,
a gaseous fuel passage in fluid communication with the gaseous fuel supply, and a gaseous fuel nozzle outlet;

the fuel injector further including a gaseous fuel check guided within the injector body between retracted and advanced positions
at which fluid communication is open and blocked, respectively, between the gaseous fuel passage and the gaseous fuel nozzle
outlet, and the injector body and the gaseous fuel check together forming a leak path for controlled leakage of liquid fuel
from the liquid fuel passage to the gaseous fuel passage responsive to a pressure drop therebetween; and

the fuel injector further including a leakage limiting seal having an outer surface exposed to a fluid pressure of the liquid
fuel passage, an inner surface exposed to a fluid pressure of the leak path, and being positioned about the gaseous fuel check
such that the leakage limiting seal deforms into sealing contact with the gaseous fuel check responsive to an increase in
the pressure drop.

US Pat. No. 9,133,764

SIX-STROKE ENGINE SYSTEM WITH BLOWDOWN EXHAUST RECIRCULATION

Caterpillar Inc., Peoria...

6. A method of reducing emissions from an internal combustion engine operating a six-stroke cycle, the method comprising:
introducing air from an intake line into a combustion chamber of the internal combustion engine during an intake stroke;
compressing the air in the combustion chamber during a first compression stroke;
introducing a first fuel charge into the combustion chamber during the first compression stroke to form a compressed fuel
and air mixture;

combusting the compressed fuel and air mixture in the combustion chamber in a first combustion stroke at the completion of
the first compression stroke, thereby expanding the fuel and air mixture during a first power stroke and resulting in intermediate
combustion products within the combustion chamber;

measuring a first engine parameter;
determining a second engine parameter setpoint based on the first engine parameter;
measuring a second engine parameter;
determining a difference between the second engine parameter and the second engine parameter setpoint;
compressing at least part of the intermediate combustion products within the combustion chamber during a second compression
stroke;

opening a blowdown exhaust valve to expel at least a portion of the intermediate combustion products as blowdown exhaust gasses
from the combustion chamber between commencement of the first power stroke and completion of the second compression stroke,
wherein opening the blowdown exhaust valve is carried out in response to a valve control signal provided by an electronic
controller based on the difference between the second engine parameter and the second engine parameter setpoint;

directing at least a portion of the blowdown exhaust gasses through a blowdown exhaust line and into the intake line;
combusting the compressed fuel and air mixture in the combustion chamber at the completion of the second compression stroke,
thereby expanding the fuel and air mixture during a second power stroke and resulting in second combustion products within
the combustion chamber; and

opening an exhaust valve to expel at least a portion of the second combustion products from the combustion chamber into an
exhaust line as exhaust gasses between commencement of the second power stroke and the completion of an exhaust stroke.

US Pat. No. 9,505,455

TRACK CHAIN ASSEMBLY FOR UNDERCARRIAGE SYSTEM

Caterpillar Inc., Peoria...

1. A track chain assembly for an undercarriage system, the track chain assembly comprising:
a plurality of adjacent offset link sets connected to each other through a pin provided between oppositely disposed offset
links, wherein an axis of rotation is defined by the pin, and wherein each of the offset links includes a center portion,
a first extension portion extending in a first direction from the center portion, and a second extension portion extending
in a second direction from the center portion, the first and second extension portions being offset from one another in an
axial direction; and

a connection assembly coupled to a pair of the plurality of offset link sets, the connection assembly configured to connect
two ends of the track chain assembly together to form an endless loop, the connection assembly comprising:

a first pair of straight links coupled to one of the pair of the plurality of offset link sets; and
a second pair of straight links coupled to the first pair of straight links and the other of the pair of the plurality of
offset link sets, wherein the straight links of the first and second pairs of straight links have a substantially planar first
side and a central portion having an increased thickness on a second side, wherein the track chain assembly comprises only
two pairs of straight links that are coupled to each other.

US Pat. No. 9,428,881

BUCKET WITH MULTI-COMPONENT WRAPPER

Caterpillar Inc., Peoria...

1. A bucket for a machine comprising:
a pair of side sections, the pair of side sections being spaced apart to define a width of the bucket;
a hinge plate assembly positioned between the pair of side sections, the hinge plate assembly including:
a pair of spaced apart hinge plates, each hinge plate including a front boss and a rear boss,
a base plate having a first thickness, and
an upper wrapper plate having a second thickness, the second thickness being less than the first thickness;
a wrapper having a third thickness, the third thickness being less than the second thickness; and
a lip plate including a lower cutting edge; and
a receptacle defined by the pair of side sections, the base plate, the upper wrapper plate, the wrapper, and the lip plate.

US Pat. No. 9,394,928

DYNAMIC SEAL WEAR MITIGATION SYSTEM

Caterpillar Inc., Peoria...

1. A system, comprising:
at least one valve device including a valve body and a valve element slidably disposed within a passageway formed in the valve
body, wherein a first segment of the valve element and the valve body are arranged to define a working chamber to receive
a working fluid at a first pressure, and the valve body and the valve element are arranged to define a control chamber to
receive a control fluid at a second pressure, the valve element having a land; and

an annular seal element disposed between the land and an inner surface, wherein the seal element and the land are together
arranged to separate the working chamber and the control chamber and to move with axial movement of the valve element; and

a pressure monitoring system fluidly coupled to the control chamber; and
a controller in communication with the pressure monitoring system, configured to:
receive a signal indicative of the second pressure;
compare the second pressure with a predetermined pressure; and
communicate a signal to an operator when the second pressure is at or above the predetermined pressure.

US Pat. No. 9,377,287

EDDY CURRENT BASED METHOD FOR COATING THICKNESS MEASUREMENT

Caterpillar Inc., Peoria...

1. A method, comprising:
configuring an eddy current detector to measure a thickness of a coating on a substrate, the eddy current detector being adapted
to measure impedance of the coated substrate, the impedance including an inductive reactance component and a resistance component;

establishing an impedance plane plot using a computer, the impedance plane plot indicating a variation of the impedance of
the coated substrate as a function of coating thickness and substrate electrical conductivity;

determining a rotation angle, the rotation angle being an angle of rotation of the impedance plane plot that will make the
inductive reactance component of the impedance substantially insensitive to substrate electrical conductivity within a coating
thickness range such that a change in the substrate electrical conductivity does not affect the inductive reactance component
of the measured impedance within the coating thickness range;

establishing, using the computer, a calibration curve that is substantially insensitive to substrate electrical conductivity
using the rotation angle, the calibration curve being a curve that relates the inductive reactance component of the impedance
to coating thickness; and

reconfiguring the eddy current detector with the calibration curve to enable the eddy current detector to correlate the measured
impedance of the coated substrate with the thickness of the coating within the coating thickness range using the calibration
curve regardless of the change in the substrate electrical conductivity.

US Pat. No. 9,251,587

MOTION ESTIMATION UTILIZING RANGE DETECTION-ENHANCED VISUAL ODOMETRY

Caterpillar Inc., Peoria...

1. A motion determination system for determining motion of a machine, the system comprising:
one or more memories storing instructions; and
one or more processors configured to execute the instructions to perform operations, including:
receiving a first camera image and a second camera image from a camera affixed to the machine, wherein the first camera image
is received earlier in time than the second camera image;

identifying corresponding features in the first camera image and the second camera image;
receiving range data, wherein the range data comprises at least one of a first range data and a second range data from a range
detection unit affixed to the machine, and the first range data and the second range data correspond to the first camera image
and the second camera image, respectively;

determining first positions of the corresponding features using the first camera image and determining second positions of
the corresponding features using the second camera image, wherein the first positions or the second positions are determined
by also using the range data;

determining a change in position of the machine based on differences between the first positions and the second positions;
and

determining a VO-based velocity of the machine based on the determined change in position of the machine,
wherein the range data comprises the first range data and the second range data, and the one or more processors are further
configured to execute the instructions to perform:

determining a range-based velocity of the machine based on changes between the first range data and the second range data;
and

fusing the range-based velocity with the VO-based velocity to generate a fused-VO velocity.

US Pat. No. 9,234,758

MACHINE POSITIONING SYSTEM UTILIZING POSITION ERROR CHECKING

Caterpillar Inc., Peoria...

1. A method of estimating position of a machine, comprising:
receiving, from a perception sensor, scene data describing an environment in a vicinity of the machine;
estimating, by a controller of the machine, a first position of the machine based on the received scene data and a map of
the environment of the machine;

determining, by the controller of the machine, whether a global positioning system (GPS) signal indicative of a location of
the machine is received by the machine;

estimating, by the controller of the machine, a second position of the machine using the GPS signal when it is determined
that the GPS signal is received;

comparing, by the controller of the machine, the second position and the first position; and
estimating, by the controller of the machine, a third position of the machine using at least one of the first position and
the second position,

wherein:
estimating the third position is performed based on a result of the comparison between the second position and the first position.

US Pat. No. 9,180,737

MOLDED TIRE HAVING DIFFERENT TREAD MATERIAL

Caterpillar Inc., Peoria...

1. A molded tire comprising:
a support structure having an inner circumferential portion and an outer circumferential portion, the inner circumferential
portion being configured to be associated with a hub;

a tread portion associated with the outer circumferential portion of the support structure; and
an intermediate portion coupling the tread portion and the outer circumferential portion to one another,
wherein the tread portion is formed from a first polyurethane having first material characteristics,
wherein the support structure is formed from a second polyurethane having second material characteristics different than the
first material characteristics, and

wherein the intermediate portion includes a semi-permeable membrane configured to permit chemical bonding between the first
polyurethane and the second polyurethane.

US Pat. No. 9,133,802

DEVICE FOR SEALING ORIFICES ON NOZZLE OF FUEL INJECTOR FOR AUTOFRETTAGE PROCESS

Caterpillar Inc., Peoria...

1. A device for sealing one or more orifices on a vessel for pressurizing fluid, the device comprising:
an outer surface;
an inner surface disposed opposite the outer surface and configured to face the vessel, the inner surface including:
one or more substantially semi-spherical protrusions located on the inner surface and configured to correspond to the orifices,
to contact with edges of the orifices, and to seal the orifices; and

wherein the device is frustum-shaped defining an inner periphery and an outer periphery.

US Pat. No. 9,660,455

SYSTEM AND METHOD FOR INCREASING EFFICIENCY OF GENSETS IN MICRO-GRID SYSTEMS

Caterpillar Inc., Peoria...

1. A method for increasing efficiency of gensets in a micro-grid system, the method comprising:
providing a plurality of gensets in parallel configured to supply power to a load, each of the plurality of gensets configured
to run at a load factor of greater than sixty percent, the number of the plurality of gensets supplying power at any given
time including a minimum or less than minimum number of gensets capable of meeting a power demand imposed by the load;

determining if the power demand exceeds the power supplied by the plurality of gensets; engaging an energy storage unit connected
at least indirectly to the plurality of gensets to provide power to the load if the power demand exceeds the power supplied
by the plurality of gensets; and

continuing to provide power through the energy storage unit until another one of the plurality of gensets is ready to supply
power to the load.

US Pat. No. 9,482,167

HYBRID PUMP CONTROL FOR MULTI FUEL ENGINE SYSTEM

Caterpillar Inc., Peoria...

1. An engine system for a machine, comprising:
an engine;
a fuel supply system, comprising:
a fuel reservoir in fluid communication with the engine, and
a pump operatively connected to the fuel reservoir to produce flow of fuel from the fuel reservoir to the engine;
an energy accumulator operatively connected to the fuel supply system, wherein the energy accumulator has capacity to store
energy and is configured to discharge the energy to produce a fuel flow in the fuel supply system; and

an electronic control module operatively connected to the engine, the fuel supply system and the energy accumulator, wherein:
the electronic control module is configured to determine whether the energy accumulator is charged with a charged energy amount
that is greater than a recharge limit amount,

the electronic control module is configured to determine a machine operational state for the machine in response to determining
that the charged energy amount is less than the recharge limit amount, and

the electronic control module is configured to execute an energy accumulator charging operation to increase the charged energy
amount in the energy accumulator in response to determining that the machine operational state is equal to an energy accumulator
charging state.

US Pat. No. 9,429,049

INTAKE VALVE ACTUATION SYSTEM FOR DUAL FUEL ENGINE

Caterpillar Inc., Peoria...

1. An intake valve actuation (IVA) system for a dual fuel engine, the IVA system being retrofittable between the dual fuel
engine and a diesel fuel engine, the dual fuel engine having at least one intake valve, a camshaft, and a rocker shaft, the
rocker shaft having a central axis, the IVA system comprising:
a cam lobe including a cam-profile;
a rocker arm having a pad surface, the rocker arm being rotatably mounted on the rocker shaft, wherein the pad surface includes
a plane that passes through the central axis of the rocker shaft, the rocker arm being operably connected with the cam lobe
and the at least one intake valve, wherein a rotational movement of the cam lobe corresponds to an oscillatory movement of
the rocker arm, and which correspondingly facilitates a switch between an open position and a closed position of the at least
one intake valve; and

an IVA piston having a piston axis and a face portion, the face portion being oppositely arranged relative to the pad surface
of the rocker arm, the face portion selectively abuts and pushes against the pad surface, to restrict the oscillatory movement
of the rocker arm and at least temporarily lock the at least one intake valve in the open position,

wherein the IVA system defines a hand-off when the face portion of the IVA piston abuts against the pad surface of the rocker
arm,

wherein the cam-profile facilitates a constant velocity of the at least one intake valve at the hand-off of the IVA system.

US Pat. No. 9,404,573

HYDROMECHANICAL POWER MANAGEMENT OF FIXED DISPLACEMENT BOOST PUMPS

Caterpillar Inc., Peoria...

1. A hydrostatic closed-loop system, comprising:
a first pump having a first fixed displacement;
a second pump having a second fixed displacement;
a third pump coupled a hydraulic motor via a hydrostatic closed-loop conduit; and
a diverter including
a first diverter inlet port fluidly coupled to a discharge of the second pump,
a first diverter outlet port fluidly coupled to a discharge of the first pump, and
a second diverter outlet port fluidly coupled to a low pressure system, the low pressure system having a fluid pressure lower
than a fluid pressure of the discharge of the first pump,

the diverter being operable to selectively vary fluid communication between the first diverter inlet port and either the first
diverter outlet port or the second diverter outlet port based on a reference pressure, the reference pressure being a fluid
pressure in a conduit downstream of the discharge of the first pump, such that the diverter effects fluid communication between
the first diverter inlet port and the second diverter outlet port when the reference pressure is greater than a first pressure
setpoint.

US Pat. No. 9,394,924

HYDROSTATIC SYSTEM CONFIGURED TO BE INTEGRATED IN AN EXCAVATOR

Caterpillar Inc., Peoria...

1. A hydrostatic system configured to be integrated in a vehicle, comprising:
a first closed hydraulic circuit including a first hydraulic pump and a first hydraulic motor configured to operate a first
component of the vehicle;

a second closed hydraulic circuit including a second hydraulic pump and a second hydraulic motor configured to operate a second
component of the vehicle;

a single six-port two-position directional valve configured to switch between a first position and a second position such
that in the first position the first hydraulic motor is solely driven by the first hydraulic pump and the second hydraulic
motor is solely driven by the second hydraulic pump, and in the second position the first hydraulic motor is disconnected
from the first hydraulic pump and the second hydraulic motor is driven by both the first and second hydraulic pumps; and

a control unit configured to determine a desired travel speed, compare the determined desired travel speed with a defined
travel speed threshold, and output a command to the single six-port two-position directional valve to switch from the first
position to the second position.

US Pat. No. 9,376,116

CONTROL SYSTEM FOR REDUCING POWERTRAIN INDUCED VIBRATIONS

Caterpillar Inc., Peoria...

1. A vibration control system for a machine having a powertrain secured to the machine by a mounting system, comprising:
a first sensor configured to generate a first signal indicative of a parameter of a work cycle of the machine;
a second sensor configured to generate a second signal indicative of vibrations induced by the powertrain;
a vibration inducing device; and
a controller in communication with the first sensor, the second sensor, and the vibration inducing device, the controller
being configured to:

classify a current operation of the machine as one of a plurality of predetermined segments of the work cycle based on the
first signal;

predict a vibration profile that will be generated by the machine during a future segment of the work cycle;
tune a listening window based on the vibration profile; and
generate a command wave directed to the vibration inducing device to generate canceling vibrations during the future segment
based on the second signal received within the listening window.

US Pat. No. 9,359,024

TRACK LINK

Caterpillar Inc., Peoria...

1. A track link, comprising:
a link body, including
a first planar side surface,
a second planar side surface opposite the first substantially planar side surface,
a shoe face extending between the first and second planar side surfaces, and
a roller rail extending between the first and second planar side surfaces opposite the shoe face.

US Pat. No. 9,308,481

ENGINE CRANKCASE BREATHER WITH MESH FILTER

Caterpillar Inc., Peoria...

1. An engine crankcase breather, comprising:
a housing having a lower end including an inlet opening and an upper end including an outlet opening, wherein the inlet opening
lies in a horizontal plane and the outlet opening lies in a vertical plane;

a mesh filter positioned within the housing and including opposing inlet and outlet faces defining a mesh filter thickness,
wherein the inlet and outlet faces are parallel to the inlet opening and are positioned below a central axis through the outlet
opening;

a bottom wall of the housing defining a portion of the lower end and including a downward slope toward a lip defining the
inlet opening, wherein the mesh filter is spaced above the bottom wall;

a plurality of oil return openings through the lip;
a support mechanism supported above and vertically aligned with the inlet opening, wherein the support mechanism contacts
a central region of the inlet face of the mesh filter; and

a plurality of support legs extending from the lip to the support mechanism,
wherein fluid flow through the engine crankcase breather is restricted to a common path defined sequentially by the inlet
opening of the housing, the inlet face of the mesh filter, the outlet face of the mesh filter, and the outlet opening of the
housing.

US Pat. No. 9,297,149

RIPPER TIP FOR A RIPPER SHANK ASSEMBLY

Caterpillar Inc., Peoria...

1. A ripper tip assembly, comprising:
a ripper tip, comprising:
a front end;
a rear end;
a mounting cavity extending into the rear end;
an upper surface extending between the front end and the rear end, wherein a portion of the upper surface at the rear end
of the ripper tip includes an upwardly projecting ridge having ridge sides and a ridge top that extend rearwardly on the ripper
tip; and

a side surface including a lock cavity; and
a rotating lock configured to be received in the lock cavity to secure the ripper tip to a ripper shank, the rotating lock
comprising:

a C-shaped sleeve including an inner frustoconical surface and at least one detent projection on the inner frustoconical surface;
and

a lock including a C-shaped skirt and a head, the C-shaped skirt including an outer frustoconical surface and at least one
detent recess on the outer frustoconical surface,

wherein the outer frustoconical surface of the lock is configured to slide along the inner frustoconical surface of the C-shaped
sleeve, and wherein the at least one detent projection is configured to engage the at least one detent recess to hold the
lock in at least one of a locked position or an unlocked position.

US Pat. No. 9,238,996

PISTON HAVING COMBUSTION BOWL SHAPED TO BALANCE COMBUSTION EFFICIENCY AND EMISSION PROPERTIES

Caterpillar Inc., Peoria...

1. A piston for an internal combustion engine, the piston comprising:
a piston body including
an outer cylindrical surface defining a longitudinal piston axis;
a combustion face defining a compound combustion bowl; and
a compound rim extending radially outward from the compound combustion bowl to the outer cylindrical surface,
the compound combustion bowl including a convex inner bowl surface defining a conical projection and a concave outer bowl
surface,

the compound rim including a flat outer rim surface adjoining the outer cylindrical surface, and a convex inner rim surface
adjoining the compound combustion bowl,

a cone angle of the conical projection is less than or equal to about 135 degrees, the concave outer bowl surface has a first
radius of curvature ranging from 7 mm to 20 mm, and the convex inner bowl surface transitions smoothly to the concave outer
bowl surface, and

the convex inner rim surface transitions abruptly to the concave outer bowl surface at an edge of the compound combustion
bowl, and the convex inner rim surface has a second radius of curvature ranging from 40 mm to 70 mm, such that the edge of
the compound combustion bowl is recessed from a plane defined by the flat outer rim surface along the longitudinal piston
axis.

US Pat. No. 9,140,155

MODULAR EXHAUST SYSTEM

Caterpillar Inc., Peoria...

1. A modular exhaust system comprising:
a first brick having a first opening thereon, the first brick having a first flow path through a first medium and a second
flow path through the first opening;

a first funnel having a narrow portion and a wide portion, the narrow portion being at least partially disposed in the first
opening and the wide portion being in contact with a second brick;

the second brick having a second opening thereon, the second brick having a third flow path through a second medium and a
fourth flow path through the second opening;

a second funnel having a narrow portion and a wide portion, the narrow portion being at least partially disposed in the second
opening and the wide portion contacting a third brick; and

the third brick having a third opening thereon, the third brick having a fifth flow path through a third medium and a sixth
flow path through the third opening.

US Pat. No. 9,080,310

CLOSED-LOOP HYDRAULIC SYSTEM HAVING REGENERATION CONFIGURATION

Caterpillar Inc., Peoria...

1. A hydraulic system, comprising:
an actuator;
a pump having variable displacement;
first and second passages connecting the pump to the actuator in a closed-loop manner;
a first load-holding valve disposed within the first passage and movable between a flow-blocking position and a flow-passing
position;

a second load-holding valve disposed within the second passage and movable between a flow-blocking position and a flow-passing
position;

a regeneration valve connected to the first passage at a location between the actuator and the first load-holding valve and
to the second passage at a location between the actuator and the second load-holding valve, the regeneration valve being configured
to selectively fluidly connect the first passage with the second passage;

a control valve configured to initiate simultaneous movements of the first and second load-holding valves; and
a controller in communication with the pump, the control valve, and the regeneration valve, wherein the controller is configured
to:

cause the control valve to initiate simultaneous movement of the first and second load-holding valves toward their flow-blocking
positions when a displacement of the pump is about zero;

selectively cause the regeneration valve to fluidly connect the first passage with the second passage when the displacement
of the pump is non-zero; and

cause only one of the first and second load-holding valves to move to its flow-blocking position when the regeneration valve
fluidly connects the first passage with the second passage.

US Pat. No. 9,563,867

SYSTEM FOR ALLOCATING AND MONITORING MACHINES

Caterpillar Inc., Peoria...

1. A system for allocating resources, comprising:
a plurality of first machines at a work area;
a plurality of second machines selected from an inventory of machines at a remote location remote from the work area;
a sensor mounted on any of the machines for monitoring material movement;
a controller configured to:
store a desired material movement goal for a production time period;
store a capacity for each of the plurality of first machines;
store a capacity for each of the plurality of second machines;
determine a total capacity at the work area based upon the capacity of each of the plurality of first machines and the production
time period;

compare the total capacity at the work area to the desired material movement goal;
upon the total capacity at the work area exceeding the desired material movement goal, generate operational instructions for
selected ones of the plurality of first machines and communicate the operational instructions to each of the selected ones
of the plurality of first machines;

upon the total capacity at the work area being less than the desired material movement goal, generate a first alert command;
and

determine whether utilizing any of the plurality of second machines at the work area will increase an operational efficiency
at the work area above a threshold when the total capacity at the work area exceeds the desired material movement goal, and
generate a second alert command upon a determination that utilizing any of the plurality of second machines at the work area
will increase the operational efficiency at the work area above the threshold.

US Pat. No. 9,441,587

PRESSURE REGULATOR HAVING AN INTEGRATED CHECK VALVE

Caterpillar Inc., Peoria...

1. A pressure regulator, comprising:
a body;
a first flow path formed in the body and configured to pass a first fluid;
a second flow path formed in the body and configured to receive a second fluid;
a diaphragm disposed within the first flow path and configured to move based on a pressure differential between the first
and second fluids;

a seat associated with the first flow path;
a primary valve element connected to the diaphragm and configured to selectively engage the seat when a pressure of the first
fluid exceeds a pressure of the second fluid by a first threshold amount; and

a secondary valve element connected to the diaphragm and configured to selectively engage the seat when the pressure of the
second fluid exceeds the pressure of the first fluid by a second threshold amount.

US Pat. No. 9,371,754

DIESEL PARTICULATE FILTER REGENERATION CONTROL AND METHOD

Caterpillar Inc., Peoria...

7. A method for initiating a regeneration event for a diesel particulate filter (DPF) associated with a machine and disposed
to receive a flow of exhaust gas from an engine of the machine, the method comprising:
providing a signal indicative of a soot accumulation in the DPF;
providing an operating parameter indicative of a work mode of the machine;
determining a soot level based at least partially on the signal;
determining a readiness level based at least partially on the operating parameter;
classifying the soot level into a plurality of soot level categories relative to a plurality of different desired ranges for
initiating the regeneration event;

classifying the readiness level into a plurality of readiness level categories relative to different work-modes of the machine
for initiating a regeneration event;

correlating the soot level categories with the readiness level categories such that each soot level category corresponds to
a particular readiness level category for initiating the regeneration event; and

initiating the regeneration event when the particular readiness level category that corresponds to the soot level is determined
to be present.

US Pat. No. 9,333,597

NITRIDED COMPONENT SURFACE REPAIR WITH AUTOFRETTAGE

Caterpillar Inc., Peoria...

1. A method for repairing a nitrided surface having a damaged area, the method comprising:
introducing the nitrided surface into a bath containing electroless material for a predetermined period of time;
coating the damaged area with a layer of the electroless material;
performing an autofrettage process on the layer; and
heat treating the electroless material at a predetermined temperature for a predefined time.

US Pat. No. 9,242,648

BOOSTING PARKING BRAKE DRIVE-THROUGH TORQUE

Caterpillar Inc., Peoria...

1. A method for enabling a machine to drive through a parking brake of the machine, the method comprising:
detecting that a transmission of the machine is in a first gear, wherein the transmission provides a plurality of gears of
consecutive respective ratios and the first gear has the lowest ratio of the plurality of gears in a selected direction;

detecting that a parking brake of the machine is activated, such that the machine is stationary;
detecting that a throttle setting of the machine exceeds a predetermined throttle threshold value; and
in response to the detected gear, parking brake activation and throttle setting, withholding power from one or more auxiliary
loads of the machine to provide additional torque to ground engaging elements of the machine to allow the machine to drive
through the parking brake.

US Pat. No. 9,139,984

RETAINER SYSTEMS FOR GROUND ENGAGING TOOLS

Caterpillar Inc., Peoria...

1. A retainer system for a ground engaging tool, comprising:
a lock configured to receive a portion of a support member to be locked with the ground engaging tool;
a retainer bushing including an inner surface configured to rotatably receive the lock, wherein the lock is rotatable relative
to the inner surface of the retainer bushing between an unlocked position and a locked position; and

a plug that is separable from the lock and configured to substantially fill at least a space between the lock and the inner
surface of the retainer bushing when the lock is in the locked position.

US Pat. No. 9,132,826

ENERGY CAPTURE MECHANISM FOR ELECTRIC DRIVE MACHINES

Caterpillar Inc., Peoria...

1. An energy capture device, comprising:
a first planetary gear assembly operatively coupled to an engine, the first planetary gear assembly adapted to engage and
disengage, via a first overrunning clutch, a shaft coupled to a generator;

a second planetary gear assembly at least partially fixed to the first planetary gear assembly, the second planetary gear
assembly adapted to engage and disengage, via a second overrunning clutch, the shaft;

wherein, during a first period, the first overrunning clutch disengages the shaft and the second overrunning clutch engages
the shaft.

US Pat. No. 9,115,809

PIN JOINT ASSEMBLY

Caterpillar Inc., Peoria...

1. A pin joint assembly, comprising:
a pin defining a longitudinal axis and including a first end portion and a second end portion opposite the first end portion;
a cylindrical bushing coaxial with the pin about the longitudinal axis and including a first end portion and a second end
portion opposite the first end portion;

a first collar engaging the first end portion of the pin and including an inner portion in proximal relation to the first
end portion of the bushing and an outer portion in distal relation to the first end portion of the bushing;

a second collar engaging the second end portion of the pin and including an inner portion in proximal relation to the second
end portion of the bushing and an outer portion in distal relation to the second end portion of the bushing;

the first end portion of the bushing, the inner portion of the first collar, and the pin cooperating to define a first channel;
a first thrust ring coaxial with the pin about the longitudinal axis and residing in the first channel in an axially spaced-apart
relation to the bushing;

the second end portion of the bushing, the inner portion of the second collar, and the pin cooperating to define a second
channel; and

a second thrust ring coaxial with the pin about the longitudinal axis and residing in the second channel in an axially spaced-apart
relation to the bushing,

wherein an outer surface of the bushing cooperates with an outer surface of each of the first and second collars to define
an angle ranging from 185° to 190°, such that the first and second end portions of the bushing and the first and second collars
are tapered and provide clearance during installation of the pin joint assembly.

US Pat. No. 9,102,012

METHOD AND SYSTEM FOR DETERMINING WELDING SEQUENCES

Caterpillar Inc., Peoria...

1. A computer-implemented method for determining a welding sequence including a plurality of welding operations, the method
comprising:
creating, by one or more computer processors, an initial population of welding sequences based on at least one user-generated
constraint;

simulating, by the one or more computer processors, welding for each one of the welding sequences in the initial population
to model distortion for the welding sequence;

determining, by the one or more computer processors, whether a merit value derived from at least the distortion for at least
one welding sequence satisfies one or more predetermined criteria;

in response to a determination that there is no merit value that satisfies the one or more predetermined criteria, repeating,
by the one or more computer processors, the following steps until a merit value satisfies the one or more predetermined criteria:

choosing a subset of candidate welding sequences from a previous population of welding sequences based on the merit values
of the welding sequences;

creating a subsequent population of welding sequences by performing mutation and crossover operations on the candidate welding
sequences while imposing the user-generated constraint;

simulating welding for each one of the welding sequences in the subsequent population of welding sequences to model distortion
for the welding sequence; and

determining whether a merit value derived from at least the distortion for at least one welding sequence in the subsequent
population of welding sequences satisfies the one or more predetermined criteria;

outputting the at least one welding sequence corresponding to the merit value that satisfies the one or more predetermined
criteria as a potential welding sequence; and

performing the plurality of welding operations according to the potential welding sequence.

US Pat. No. 9,102,445

TANK ASSEMBLY HAVING TWIST-AND-LOCK MOUNTING FLANGE

Caterpillar Inc., Peoria...

1. A tank assembly, comprising:
a tank enclosing a volume and having a sidewall with an upper surface and a lower surface and defining an opening into the
volume and a first rotational stop feature at the opening, wherein the opening into the tank includes a generally circular
center and at least one arcuate recess located at a periphery of the generally circular center, and the first rotational stop
feature includes at least one recess in the sidewall of the tank;

a mounting flange having an upper member configured to engage the upper surface of the sidewall, a lower member configured
to engage the lower surface of the sidewall, and a second rotational stop feature configured to engage the first rotational
stop feature, wherein the lower member includes at least one arcuate cam segment extending radially outward, the at least
one arcuate cam segment configured to pass through the at least one arcuate recess during assembly, and the second rotational
stop feature includes at least one protrusion extending from the lower member of the mounting flange radially outward a greater
distance than a radially outermost surface of the at least one arcuate cam segment; and

a resilient member disposed between the tank and the mounting flange, the resilient member configured to substantially seal
an interface between the tank and the mounting flange and to bias the second rotational stop feature into engagement with
the first rotational stop feature upon at least partial decompression of the resilient member when the mounting flange is
locked to the tank.

US Pat. No. 9,097,202

WEIGHT BALANCED INTERNAL COMBUSTION ENGINE PISTON

Caterpillar Inc., Peoria...

1. A piston for an internal combustion engine, comprising:
a piston crown connected to and above a body portion of the piston, the body portion forming two pin bores, and the piston
crown defining an outer cylindrical wall;

at least one piston ring seal groove formed in the outer cylindrical wall and extending peripherally around the piston crown,
the at least one piston ring seal groove being configured to accommodate therein a piston ring seal;

a first oil drainage groove formed in the outer cylindrical wall below the at least one piston ring seal groove and extending
in parallel to the at least one piston ring seal groove around an entire periphery of the piston, wherein the first oil drainage
groove has a first width measured along a centerline of the piston;

a plurality of drain openings formed in the body portion, the plurality of drain openings fluidly connecting the first oil
drainage groove with an internal gallery of the piston;

a second oil drainage groove formed in the outer cylindrical wall below and adjacent the first oil drainage groove, the second
oil drainage groove defining a first channel, a second channel, and an annular protrusion disposed between the first channel
and the second channel, the annular protrusion defining a reduced-diameter land portion;

wherein the second oil drainage groove extends parallel to the first oil drainage groove around the entire periphery of the
piston but is interrupted over segments of the body portion that accommodate the two pin bores such that oil collected in
the second oil drainage groove drains from the first channel to the second channel, and from the second channel back to the
internal combustion engine through the segments and externally to the piston,

wherein the second oil drainage groove has a width that is wider than the width of the first oil drainage groove; and
at least one additional piston ring groove being sized to receive a piston ring seal therein, the at least one additional
piston ring groove disposed adjacent the at least one piston ring seal groove.

US Pat. No. 9,086,698

DETERMINING AN OPTIMUM OPERATING POINT OF AN EARTH MOVING MACHINE

Caterpillar Inc., Peoria...

1. A method of determining an optimum performance in a track-type tractor, the method comprising:
receiving, at a processor of the track-type tractor, inputs from the track-type tractor related to current operating conditions
and a current operating state;

calculating in real time a current performance based on the current operating conditions and the current operating state;
generating an estimated operating environment using the current operating conditions and the current operating state;

iteratively solving, via a processor of the track-type tractor, a performance equation that incorporates the estimated operating
environment over a range of values of a single input variable to determine a peak value of the performance equation and a
state of the single input required to achieve the peak value, wherein the peak value corresponds to the optimum performance
of the track-type tractor; normalizing the current performance to the optimum performance to produce a normalized performance;
and providing the normalized performance, the optimum performance, and the state of the single input required to achieve the
optimum performance to a device that adjusts the current operating state to improve or maintain a performance of the track-type
tractor; and calculating a ground speed using a nominal pull-slip curve as adjusted by a shear modulus factor.

US Pat. No. 9,057,178

STIFF LINK THUMB WITH DAMPENER

Caterpillar Inc., Peoria...

1. A machine comprising:
a frame, an engine, an implement system, a bucket, a thumb member, a passive dampener and an operator station adapted to enable
control of movement of the machine;

the thumb member being mounted on the implement system for free dampened pivotable movement on the implement system;
the bucket being controllably pivotably mounted on the implement system and adapted to be movable into controlled engagement
under force with the thumb member;

the thumb member being controllably pivotable into selectable pivot positions via controlled pivoting of one or the other
or both of the implement system and the bucket member such that a pivot force is exerted on the thumb member;

the passive dampener interconnected between the thumb member and an arm of the implement system in an arrangement wherein
the passive dampener comprises an assembly that passively dampens free pivoting movement of the thumb member by absorbing
at least a portion of the pivot force exerted on the thumb member, the assembly including a piston slidably mounted within
a cylinder, the piston defining a pair of chambers disposed on opposing sides of the piston, the chambers containing a fluid
that flows between the chambers on slidable movement of the piston within the cylinder, the fluid absorbing the pivot force
of flow between the chambers; and

a first and a second valve disposed in the piston, the first valve enabling the fluid to flow at a first flow rate and absorb
force at a first absorb rate on slidable movement of the piston in one direction, the second valve enabling the fluid to flow
at a second flow rate and absorb force at a second absorb rate on slidable movement of the piston in an opposite direction,
the first flow rate differing from the second flow rate.

US Pat. No. 9,488,076

METHOD OF REMANUFACTURING A ROCKER ARM AND REMANUFACTURED ROCKER ARM

Caterpillar Inc., Peoria...

1. A method of remanufacturing a rocker arm having a body defining a socket portion, the socket portion having a worn surface,
the method comprising:
machining a portion of the socket portion to remove the worn surface and forming a seat configured to receive an insert member
therein;

disposing the insert member within the seat; and
fixedly coupling the insert member to the seat, forming a socket portion that is partially formed by the body of the arm and
partially by the insert member.

US Pat. No. 9,465,113

MACHINE POSITIONING SYSTEM UTILIZING RELATIVE POSE INFORMATION

Caterpillar Inc., Peoria...

1. A method of determining an absolute position of a first machine, the first machine including a locating device and a controller
with a processor and a memory component, the method comprising:
generating with the locating device, and receiving with the processor, a location signal indicative of a first absolute position
estimate of the first machine and a first uncertainty measure, the first uncertainty corresponding to the first absolute position
estimate;

receiving with the processor, from a second machine, relative pose information determined by the second machine, a second
absolute position estimate of the second machine, and a second uncertainty measure, the second uncertainty measure corresponding
to the second absolute position estimate;

determining with the processor that the first uncertainty measure is higher than the second uncertainty measure;
determining with the processor, at least in part in response to determining that the first uncertainty measure is higher than
the second uncertainty measure, the absolute position of the first machine, and a first machine absolute uncertainty measure;
based, at least in part, on the first absolute position estimate, the relative pose information, the second absolute position
estimate, and the second uncertainty measure; and

storing the absolute position of the first machine in the memory component.

US Pat. No. 9,388,923

HOSE ASSEMBLY WITH ANTI-ROTATIONAL COUPLING AND CRIMPING SECTION

Caterpillar Inc., Peoria...

1. A fluid coupling, comprising:
a coupling end for mechanically and fluidly joining the fluid coupling to another fluid coupling, the coupling end having
a face;

a fluid orifice disposed on the face, the fluid orifice defining a central axis;
a plurality of ridges disposed around the fluid orifice in the face of the coupling end, wherein each of the plurality of
ridges has a longitudinal dimension, the longitudinal dimension of each of the plurality of ridges extending radially outward
from the central axis, wherein peaks of the plurality of ridges are flush with the face; and

a sealing member at least partially inset in the face of the coupling end around the fluid orifice.

US Pat. No. 9,378,688

SYSTEM AND METHOD FOR CONTROLLING BRIGHTNESS IN AREAS OF A LIQUID CRYSTAL DISPLAY

Caterpillar Inc., Peoria...

1. A control system comprising:
a LCD including a first display area and a second display area; and
a controller in communication with the LCD, the controller configured to:
display an icon at an icon brightness level in the first display area,
display a first image in the second display area,
display a mask image over the first image, wherein the first image is visible through the mask image at a first composite
brightness level, the first composite brightness level being less than the icon brightness level,

display a plurality of additional overlapping mask images in the second display area, each of the mask images positioned to
cover the first image and the first mask image, wherein the first image is visible through the plurality of mask images at
a second composite brightness level, the second composite brightness level less than the first composite brightness level,
and

receive a dimming input from a user interface, and determine the number of overlapping mask images to be applied to the first
image based on the dimming input.

US Pat. No. 9,260,837

INTELLIGENT PASS JUMP CONTROL

Caterpillar Inc., Peoria...

1. A system for controlling an earthmoving machine and a work implement associated with the earthmoving machine during an
earthmoving operation on a work surface, the earthmoving operation including an upper pass and a lower pass, the system comprising:
a positioning system associated with the earthmoving machine, the positioning system generating position signals indicative
of a position of the work surface; and

a controller configured to execute instructions to:
receive the position signals from the positioning system;
store position signals in a pass history;
determine, based on the pass history, an actual profile of the work surface;
determine, based on the actual profile of the work surface in the pass history, existence of a first condition, the first
exists when the actual profile of the work surface includes a first volume having a height above a threshold for the upper
pass;

determine, based on the actual profile of the work surface in the pass history, existence of a second condition, the second
condition exists when the actual profile of the work surface includes a valley having a floor lower than the threshold for
the upper pass; and

direct the earthmoving machine to operate based on the lower pass if the first and second conditions exist.

US Pat. No. 9,261,118

BOOM CYLINDER DIG FLOW REGENERATION

Caterpillar Inc., Peoria...

1. A method for conserving energy in a hydraulic system including:
a pump,
a hydraulic actuator including a head end, a rod end, and a piston disposed inside the actuator between head end and the rod
end,

a first valve disposed between the rod end and a fluid reservoir, and disposed between the rod end and a second valve, and
the second valve disposed between the pump and the head end, the method comprising:
determining when the hydraulic system is in an overrunning load condition, a light-resistive load condition or a heavy-resistive
load condition; and

when the hydraulic system enters the overrunning load condition, receiving by the head end regenerated fluid.

US Pat. No. 9,239,085

REDUCED PARASITIC HYDRAULIC FAN SYSTEM WITH REVERSING CAPABILITY

Caterpillar Inc., Peoria...

1. A method for controlling a hydraulic system having at least an implement pump, a fan-steering-braking (FSB) pump, a valve
assembly, a fan drive system, a steering system, a braking system and one or more accumulators, the method comprising the
steps of:
determining an operational state of a power source associated with the hydraulic system;
actuating one or more valves of the valve assembly such that the FSB pump charges the accumulators and operates at least the
fan drive system, the steering system and the braking system if the power source is operating at less than maximum power;
and

actuating one or more valves of the valve assembly such that the accumulators operate at least the fan drive system, the steering
system and the braking system and such that the FSB pump supplements the implement pump as needed if the power source is operating
at maximum power.

US Pat. No. 9,062,436

IMPLEMENT TOOTH ASSEMBLY WITH TIP AND ADAPTER

Caterpillar Inc., Peoria...

1. A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, wherein the tooth assembly includes
an adapter configured for attachment to the base edge of the ground engaging implement and having a forwardly extending adapter
nose, the ground engaging tip comprising:
a rear edge;
a top outer surface;
a bottom outer surface, wherein the top outer surface and the bottom outer surface extend forward from the rear edge of the
ground engaging tip and converge at a front edge;

oppositely disposed lateral outer surfaces extending upwardly from the bottom outer surface to the top outer surface; and
an inner surface extending inwardly into the ground engaging tip from the rear edge of the ground engaging tip and defining
a nose cavity within the ground engaging tip having a complementary shape to the adapter nose of the adapter for receiving
the adapter nose therein, the inner surface comprising:

a bottom inner surface extending inwardly from the rear edge of the ground engaging tip and oriented approximately perpendicular
to the rear edge of the ground engaging tip,

a front inner surface,
a top inner surface having a first support portion proximate the front inner surface and having a rear edge, a second support
portion proximate the rear edge of the ground engaging tip and having a front edge, and an intermediate portion extending
from the front edge of the second support portion to the rear edge of the first support portion, wherein a distance between
the first support portion and the bottom inner surface is less than a distance between the second support portion and the
bottom inner surface, and wherein the second support portion of the top inner surface is approximately parallel to the bottom
inner surface, and oppositely disposed side inner surfaces extending upwardly from the bottom inner surface to the top inner
surface, and

wherein the second support portion extends substantially from one of the oppositely disposed side inner surfaces to the other
of the oppositely disposed side inner surfaces.

US Pat. No. 9,518,372

ADJUSTMENT MECHANISM FOR ADJUSTING JAWS OF SHEAR

Caterpillar Inc., Peoria...

1. A hydraulic shear comprising:
a first jaw including a first sidewall with a first opening therethrough and a second sidewall with a second opening therethrough;
a second jaw disposed between the first and second sidewalls, the second jaw including a third opening;
a pivot pin including a head portion and a rod portion, the pivot pin extending through the first, second, and third openings
to pivotally connect the first and second jaws; and

an adjustment mechanism coupled to the first jaw, the second jaw, and the pivot pin, the adjustment mechanism configured to
slidably adjust a position of the second jaw on the pivot pin with respect to the first and second sidewalls, the adjustment
mechanism including:

the head portion of the pivot pin being in the first opening, and the rod portion of the pivot pin extending from the head
portion and including a threaded end adjacent the second opening; a nut adjustably engaged with the threaded end

the nut being releasably secured to the second sidewall and rotatable to move the head portion relative to the second jaw
to slidably adjust the position of the second jaw on the pivot pin with respect to the first and second sidewalls; and at
least one shim and at least one low-friction plate disposed on the pivot pin, and located between the first and second jaws.

US Pat. No. 9,506,439

DUCTED COMBUSTION SYSTEMS UTILIZING ADJUSTABLE LENGTH DUCTS

Caterpillar Inc., Peoria...

1. A ducted combustion system, comprising:
a combustion chamber defined as an enclosure bound at a first end by a flame deck surface of a cylinder head of an internal
combustion engine, and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine;

a fuel injector in fluid connection with the combustion chamber and including one or more orifices opening from an injector
tip of the fuel injector, the one or more orifices injecting fuel into the combustion chamber as one or more fuel jets; and

one or more adjustable length ducts disposed within the combustion chamber between the flame deck surface and the piston top
surface, the one or more adjustable length ducts disposed such that each of the one or more fuel jets at least partially enters
one of the one or more adjustable length ducts upon being injected into the combustion chamber.

US Pat. No. 9,487,080

DRAINING SYSTEM FOR FUEL TANK

Caterpillar Inc., Peoria...

1. A draining system for draining fuel from a fuel tank, the fuel tank including a holding chamber for holding fuel, and a
fill port assembly for adding fuel to the holding chamber, the fill port assembly including a fill port passageway in fluid
communication with the holding chamber and a valve system for regulating a flow of fuel through the fill port passageway,
the draining system comprising:
a coupling member having a drainage passageway and being configured to detachably connect with the fill port assembly such
that the drainage passageway is in fluid communication with the fill port passageway;

an actuating member configured to selectively actuate the valve system between a closed configuration and an opened configuration
based on a first user input such that fuel can flow from the fill port passageway into the drainage passageway when the valve
system is in the opened configuration, the actuating member comprising:

an elongate member, extending in the drainage passageway and configured to engage with the valve system to selectively actuate
the valve system;

an outlet conduit in fluid communication with the drainage passageway such that fuel can flow from the drainage passageway
into the outlet conduit; and

a flow regulating member configured to regulate the flow of fuel through the outlet conduit based on a second user input.

US Pat. No. 9,441,351

GROUND ENGAGING TOOL ASSEMBLY

Caterpillar Inc., Peoria...

1. A ground engaging tip comprising:
a ground engaging portion; and
a coupling portion in opposing relationship to the ground engaging portion along a longitudinal axis thereof, the coupling
portion including an interior surface, a side wall, and an interlock tab, the interior surface defining a coupler pocket,
the interior surface having a base wall, the side wall and the base wall at least partially defining the coupler pocket, and
the interlock tab having a base end and a proximal end, the base end of the interlock tab contiguous with the side wall, and
the interlock tab extending from the base end to the proximal end in a direction substantially away from the ground engaging
portion;

wherein the sidewall defines a retention orifice having a center, and a first longitudinal distance, measured along the longitudinal
axis, from the center of the retention orifice to the base wall of the interior surface and a second longitudinal distance,
measured along the longitudinal axis, from the center of the retention orifice to the proximal end of the interlock tab, wherein
the first longitudinal distance is less than the second longitudinal distance; and

wherein the interior surface further includes a coupler face wall extending along a normal axis away from the side wall, the
normal axis being perpendicular to the longitudinal axis, the coupler face wall extends from the base wall away from the ground
engaging portion and includes;

a distal planar portion respectively adjacent the base wall,
a first convex portion respectively adjacent the distal planar portion,
a concave portion respectively adjacent the first convex portion, and
a second convex portion respectively adjacent the concave portion such that the concave portion is between the first and second
convex portions.

US Pat. No. 9,388,550

SYSTEM AND METHOD FOR CONTROLLING THE OPERATION OF A MACHINE

Caterpillar Inc., Peoria...

20. A machine, comprising:
a prime mover;
a ground-engaging work implement for engaging a work surface along a path at a work site;
a position sensor for generating position signals indicative of a position of a work surface at the work site;
a controller configured to:
store an electronic map of the work site, the work site including a boundary, a work zone, and a boundary zone between the
boundary and the work zone;

store a target surface;
determine the position of the work surface based upon the position signals;
select a work zone loading profile for a work zone cut location along the path within the work zone, the work zone loading
profile having a work zone cut angle relative to a ground reference;

select a final cut loading profile for a final cut location along the path adjacent the boundary zone, the final cut loading
profile having a final cut angle relative to the ground reference, the final cut angle being steeper than the work zone cut
angle.

US Pat. No. 9,376,977

RAIL PRESSURE CONTROL STRATEGY FOR COMMON RAIL FUEL SYSTEM

Caterpillar Inc., Peoria...

1. A method of controlling pressure in a common rail of a fuel common rail system comprising the steps of:
determining an error between an actual rail pressure and a target rail pressure;
determining a time rate of change of the error;
determining an integral of the error;
determining, based on the error and the time rate of change of the error, whether the common rail system is in one of an overshoot
avoidance condition and a fast response condition, wherein

the overshoot avoidance condition is indicated by the error being less than a first threshold and the time rate of change
of the error being greater than a second threshold,

the fast response condition is indicated by the error being greater than a third threshold and the time rate of change of
the error being greater than a forth threshold;

supplying fuel to the common rail from an electronically controlled pump;
removing fuel from the common rail responsive to injecting fuel from a plurality of fuel injectors;
controlling pressure in the common rail
predominately responsive to the time rate of change of the error during the overshoot avoidance condition, and
predominantly responsive to the error during the fast response condition, and
predominately responsive to the error and the integral of the error when the common rail system is operating in neither the
overshoot avoidance condition nor the fast response condition.

US Pat. No. 9,377,076

MAGNETO-RHEOLOGICAL DAMPING SYSTEM FOR PREVENTING STRATIFICATION

Caterpillar Inc., Peoria...

1. A magneto-rheological (MR) damping system for preventing stratification of MR fluid, the MR damping system comprising:
a housing;
a piston structured and arranged to operably reciprocate within the housing, the piston including a circumferential portion,
the circumferential portion having a groove therein;

a stir band disposed in the groove of the piston, the stir band including:
an outer periphery;
a plurality of flexible protrusions including:
a head portion fixedly attached to the outer periphery of the stir band; and
a tail portion extending from the head portion, disjointed from the outer periphery of the stir band and being substantially
flexible relative to the head portion, thereby diverting a flow of MR fluid in one of a clockwise or counter-clockwise direction
about the circumferential portion of the piston, during a reciprocatory movement of the piston.

US Pat. No. 9,200,432

METHOD AND SYSTEM FOR ESTIMATING PAYLOAD WEIGHT WITH HYDRAULIC FLUID TEMPERATURE COMPENSATION

Caterpillar Inc., Peoria...

1. A system for estimating the weight of a payload in a bucket of a machine, the system comprising:
a pivotable lift linkage supporting the bucket;
a lift cylinder assembly connected to the lift linkage and configured to be movable by pressurized hydraulic fluid between
extended and retracted positions for pivoting the lift linkage to move the bucket between raised and lowered positions;

a pressure sensor arranged remotely from the lift cylinder assembly and configured to provide pressure data relating to pressure
in the lift cylinder assembly; and

a payload measurement system configured to monitor the pressure data from the pressure sensor, temperature data relating to
a temperature of the hydraulic fluid in the lift cylinder assembly and extension velocity data relating to velocity of extension
of the lift cylinder assembly, the payload measurement system being configured to estimate a weight of the payload in the
bucket based on the pressure data as adjusted by an estimate of a pressure drop between the lift cylinder assembly and the
pressure sensor, the payload measurement system being configured to determine the estimate of the pressure drop based on the
temperature data, the extension velocity data and a mathematical model that has been fitted to empirical data relating to
pressure loss between the lift cylinder assembly and the pressure sensor at different hydraulic fluid temperatures and lift
cylinder assembly extension velocities.

US Pat. No. 9,482,178

CYLINDER LINER WITH AN UNDERCUT SEAL TRAP

Caterpillar Inc., Peoria...

16. An engine, comprising:
a block;
a cylinder liner disposed within the block, a radially external surface of the cylinder liner at least partly facing the block,
the cylinder liner defining a longitudinal axis therethrough;

a piston disposed within the cylinder liner and configured for reciprocal sliding engagement with a radially internal surface
of the cylinder liner along the longitudinal axis, the radially internal surface being opposite the radially external surface,

the radially external surface of the cylinder liner including a sealing surface and an undercut surface adjacent to the sealing
surface, the sealing surface at least partly facing away from the longitudinal axis, and

the undercut surface including a first surface and a second surface, the first surface at least partly facing the longitudinal
axis, and the second surface at least partly facing away from the longitudinal axis, wherein a radial distance from the first
surface to the longitudinal axis is less than a radial distance from the sealing surface to the longitudinal axis; and

a seal disposed in sealing engagement with the sealing surface and the block.

US Pat. No. 9,446,803

EQUALIZER BAR METHOD AND MANUFACTURE

Caterpillar Inc., Peoria...

1. A method of repairing an equalizer bar for connecting track frames in a track type machine, the method comprising:
removing a portion of an end of the equalizer bar, to create an elongated member including a first corresponding mating surface
at one end;

creating a first receiving feature end in the first corresponding mating surface of the elongated member;
positioning a first equalizer bar end adjacent to the elongated member, the first equalizer bar end including
an upper surface, an outer surface, a bottom end, and a first mating surface, the outer surface extending between the upper
surface and the bottom end at one end of the first equalizer bar end, and the first mating surface extending between the upper
surface and the bottom end at the end of the first equalizer bar end opposite from the outer surface, wherein the first mating
surface is configured to attach to the first corresponding mating surface of the elongated member,

a first receiving feature extending from the first mating surface into the body of the first equalizer bar end;
aligning the first receiving feature of the first equalizer bar end to the first receiving feature end of the elongated member;
and

securing a first fastener into the first receiving feature.

US Pat. No. 9,416,761

NINE PHASE INDUCTION MOTOR STARTER/ALTERNATOR

Caterpillar Inc., Peoria...

1. An electrical induction motor, comprising:
nine separate terminals configured to receive nine separate current inputs from nine output phases of a nine phase inverter;
nine windings connected to the nine separate terminals;
a plurality of contactors, each of the plurality of contactors being configured to be selectively opened or closed in a circuit
including the nine windings to selectively connect the nine windings together in one of a mesh configuration or a star configuration;

each of the nine windings being configured to be selectively connected between two of the nine separate current inputs, with
a phase angle difference between the two separate current inputs of 40 degrees;

each of the plurality of contactors being further configured to be selectively opened or closed to establish a span value
for the mesh configuration of two, with two being the number of inverter output phases between a terminal of one of the nine
windings and a terminal of another of the nine windings connected to the one of the nine windings; and

the motor being further configured to selectively receive a first one of the harmonics of a drive waveform generated by the
nine phase inverter and a second, different one of the harmonics of the drive waveform generated by the nine phase inverter.