US Pat. No. 9,376,911

CHISEL HOLDER, AND CHISEL HOLDER SYSTEM COMPRISING A CHISEL HOLDER AND A BASE PART

WIRTGEN GMBH, Windhagen ...

1. A chisel holder system, comprising:
a chisel holder, comprising:
a body region having a chisel-receiving opening which is open at least toward a chisel insertion side of the body region;
a fastening shank which extends from a supporting side of the body region and which has a shank longitudinal axis (LB);

wherein the body region has, on its supporting side, a first supporting surface region, and wherein;
the body region, on its supporting side, has a second supporting surface region which is angled in relation to the first supporting
surface region,

wherein the first supporting surface region comprises a first supporting surface and a second supporting surface which is
angled in relation to the first supporting surface, and

wherein the chisel-receiving opening is open toward the supporting side of the body region substantially in the region of
the first supporting surface region and in that the fastening shank extends from the body region substantially in the region
of the second supporting surface region,

the chisel holder system further comprising:
a base part having a first counterpart supporting surface region for supporting the first supporting surface region; and
a second counterpart supporting surface region, which is angled relative to the first counterpart supporting surface region,
for supporting the second supporting surface region,

wherein the first counterpart supporting surface region comprises a first counterpart supporting surface for supporting the
first supporting surface or the first supporting surface region and a second counterpart supporting surface, which is angled
relative to the first counterpart supporting surface, for supporting the second supporting surface of the first supporting
surface region.

US Pat. No. 9,222,354

TOOL SYSTEM

Wirtgen GmbH, (DE)

12. A tool system, comprising:
a bit holder including a bit receptacle, the bit receptacle including a first diameter region, a second diameter region, and
a receptacle transitional segment between the first diameter region and the second diameter region; and

a bit including a bit shank having a longitudinal center axis, the bit including a first cylindrical segment, a second cylindrical
segment, and a shank transitional segment between the first cylindrical segment and the second cylindrical segment;

wherein the receptacle transitional segment and the shank transitional segment are spaced from one another in the direction
of the longitudinal center axis to form a resetting space, the resetting space having a length in the direction of the longitudinal
center axis in a range of from 7 mm to 20 mm.

US Pat. No. 9,121,146

DETERMINING MILLED VOLUME OR MILLED AREA OF A MILLED SURFACE

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame;
a plurality of ground engaging supports for supporting the machine frame;
a milling drum supported from the machine frame for milling a ground surface, the milling drum having a drum width;
at least one profile sensor configured to detect at least one profile parameter of a ground surface in front of the milling
drum;

at least one distance sensor configured to detect at least one distance parameter corresponding to a distance traveled by
the construction machine;

at least one depth sensor configured to detect at least one depth parameter corresponding to a milling depth of the milling
drum; and

an on-board processor located on the construction machine and communicated with the sensors, the processor being configured
to determine a usage of the construction machine as a volume of material milled by the construction machine at least partially
as a function of the profile parameter, the depth parameter and the distance parameter.

US Pat. No. 9,309,632

AUTOMOTIVE CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING AN AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. An automotive construction machine, comprising:
a machine frame having a working direction;
at least one front running gear and at least one rear running gear configured to support the machine frame from a ground surface;
a working device supported from the machine frame;
front and rear lifting systems connected between the machine frame and the front and rear running gears, respectively, for
adjusting a height and orientation of the machine frame relative to the ground surface; and

a control unit operably associated with the lifting systems, the control unit being configured such that:
the front lifting system is controlled such that the machine frame remains in a predetermined orientation with respect to
the ground surface in the working direction as the construction machine advances;

the rear lifting system is controlled such that the working device remains at a predetermined height relative to the ground
surface as the construction machine advances; and

the rear lifting system is correctively controlled with a time delay in response to control of the front lifting system so
that the height of the working device relative to the ground surface is corrected by the rear lifting system at least in part
to compensate for unevenness of the ground surface.

US Pat. No. 9,234,320

ROAD MILLING MACHINE, AS WELL AS METHOD FOR MOUNTING A CANTILEVERED MILLING DRUM

Wirtgen GmbH, (DE)

1. A road milling machine, comprising:
a machine frame;
a milling drum supported from the machine frame, the milling drum having an axis of rotation and including a connecting flange,
the connecting flange including at least one flange opening and a plurality of bolt holes; and

a milling drum drive including at least one axially extending mounting stud sized to be received through the flange opening,
and a plurality of axially extending stud bolts, the mounting stud extending axially beyond the stud bolts, so that when mounting
the milling drum on the drum drive the flange opening may be received about the mounting stud with the connecting flange of
the milling drum resting on the mounting stud prior to axial engagement of the stud bolts with the bolt holes.

US Pat. No. 9,644,340

SCRAPER DEVICE, AS WELL AS CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame;
a milling drum mounted to rotate about a milling drum axis, the milling drum axis being fixed relative to the machine frame;
a scraper blade located behind the milling drum with reference to a direction of travel of the construction machine, the scraper
blade including an upper part and a lower part, the lower part being movable in a sliding non-pivotal motion relative to the
upper part;

a lifting actuator connected between the upper and lower parts to slide the lower part relative to the upper part between
a downward extended position and an upward retracted position; and

a swiveling actuator separate from the lifting actuator, the swiveling actuator being connected between the upper part of
the scraper blade and a fixed part fixed relative to the machine frame, the swiveling actuator being configured to extend
to pivot the scraper blade upward about a swiveling axis parallel to and spaced apart from the milling drum axis.

US Pat. No. 9,133,587

SELF-PROPELLED ROAD-MILLING MACHINE

Wirtgen GmbH, (DE)

1. A method of operating a self-propelled road-milling machine, the machine including:
a chassis;
a driver's position arranged on the chassis for a driver of the road-milling machine;
a milling drum supported from the chassis for milling off material;
a material handling conveyor supported from the chassis for feeding the milled off material to a discharge point where the
milled off material is to be received by a transporting vehicle separate from the road-milling machine;

at least one control unit carried by the road-milling machine; and
at least one visual indicator operably associated with the control unit;
wherein the method comprises:
(a) during forward operation of the milling machine, receiving in the control unit an entry by the driver of the road-milling
machine of an input corresponding to one of at least two different states of operation, the at least two states of operation
including:

(1) a first state of operation wherein the transporting vehicle is to move forward; and
(2) a second state of operation wherein the transporting vehicle is to stop; and
(b) indicating with the visual indicator to a driver of the transporting vehicle which one of the at least two states of operation
has been entered on the control unit by the driver of the road-milling machine.

US Pat. No. 9,388,538

FRAME WIDTH ADJUSTMENT BY STEERING

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame having a front, a back, a left side and a right side, the machine frame being laterally extendible to adjust
a width of the machine frame;

at least one left side ground engaging unit steerably connected to the left side of the machine frame;
at least one right side ground engaging unit steerably connected to the right side of the machine frame;
each of the ground engaging units including a drive motor configured such that each ground engaging unit is driven across
a ground surface by its respective drive motor;

a frame lock configured to selectively lock and unlock the machine frame, such that when the frame lock is locked the machine
frame cannot laterally extend, and when the frame lock is unlocked the machine frame can laterally extend; and

a controller including a frame extension mode, the frame extension mode being configured to provide steering of at least one
of the ground engaging units to provide a lateral force to adjust the width of the machine frame as the machine is driven
across the ground surface by the ground engaging units.

US Pat. No. 9,194,088

ROAD MILLING MACHINE FOR WORKING ROAD OR GROUND SURFACES, AS WELL AS METHOD FOR STEERING A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A road milling machine for working road or ground surfaces, comprising:
a machine frame;
left and right front wheels or crawler tracks, and left and right rear wheels or crawler tracks, supporting the machine frame,
wherein one of the left or right front wheels or tracks is offset in front of the other of the left or right front wheels
or tracks in a direction of travel;

a milling drum supported from the machine frame between the rear wheels or tracks, the milling drum including an end located
substantially flush with a lateral outer side of the machine frame such that the lateral outer side defines a zero-clearance
side to enable milling close to obstacles;

left and right height adjustable lifting columns connecting the left and right rear wheels or tracks to the machine frame
such that a milling depth of the milling drum is adjustable by adjusting a height of the lifting columns;

left and right pivoting columns connecting the left and right front wheels or tracks to the machine frame, each pivoting column
having a pivot axis;

left and right steering levers connected to the left and right front wheels or tracks, respectively, so as to steer each of
the front wheels or tracks in steering angles about the pivot axes of their respective pivot columns;

a rigid connecting part coupling the steering levers of the front wheels or crawler tracks to one another for synchronous
adjustment of the steering angles; and

at least one steering cylinder configured to adjust the steering angles.

US Pat. No. 9,057,161

ROAD CONSTRUCTION MACHINE, AS WELL AS METHOD FOR CONTROLLING THE DISTANCE OF A ROAD CONSTRUCTION MACHINE MOVED ON A GROUND SURFACE

Wirtgen GmbH, (DE)

1. A method of controlling a height of a machine frame of a road construction machine relative to a ground surface as the
road construction machine moves over the ground surface, comprising:
(a) transmitting with a transmitter at least one measuring beam to define a reference plane, the reference plane extending
parallel to one of the machine frame and the ground surface at a reference location;

(b) detecting the at least one measuring beam with a receiver associated with the other of the machine frame and the ground
surface at the reference location, and thereby measuring the height of the machine frame relative to the reference location
on the ground surface, one of the transmitter and receiver being rigidly connected to the machine frame, wherein both the
transmitter and the receiver are moving with the road construction machine over the ground surface during steps (a) and (b);
and

(c) controlling the height of the machine frame relative to the reference location on the ground surface in response to the
height measured in step (b).

US Pat. No. 9,085,857

AUTOMOTIVE MILLING MACHINE, USE OF A LIFTING COLUMN OF A MILLING MACHINE, AS WELL AS METHOD FOR INCREASING THE OPERATING EFFICIENCY OF A MILLING MACHINE

Wirtgen GmbH, (DE)

1. An automotive milling machine apparatus for the treatment of a road surface or ground surface, comprising:
a chassis including at least three ground engaging units for engaging the road surface or ground surface, the ground engaging
units defining a front axis and a rear axis with reference to a direction of travel;

a machine frame supported by the chassis;
at least two lifting columns connected between two of the ground engaging units and the machine frame, said two of the ground
engaging units being located on a common one of the axes and being transversely offset from one another with reference to
the direction of travel;

a working drum supported from the machine frame for working the road surface or ground surface, the working drum being adjustable
to a raised position out of engagement with the road surface or ground; and

a spring system operatively associated with the at least two lifting columns and selectively operable when the working drum
is in the raised position.

US Pat. No. 9,416,501

SELF-PROPELLED BUILDING MACHINE AND METHOD FOR OPERATING A BUILDING MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled building machine, comprising:
a machine frame;
a plurality of running gears configured to rest on a ground surface;
a working roller arranged on the machine frame and configured to contact the ground surface;
a height adjustable support configured to support the machine frame in a height adjustable manner relative to at least one
of the running gears, the height-adjustable support including at least one lifting column attached to one of the running gears
and supporting the machine frame, the lifting column including a fixed component fixed relative to the machine frame, and
the lifting column including a length adjustable holder configured such that the length adjustable holder is in a first position,
relative to the fixed component, in which the length adjustable holder supports the fixed component if the running gear attached
to the lifting column is subjected to an imposed weight, and the length adjustable holder is in a second position, relative
to the fixed component, in which the length adjustable holder does not support the fixed component if the running gear attached
to the lifting column is not subjected to an imposed weight; and

a sensor configured to detect whether the length adjustable holder is in the first position or the second position.

US Pat. No. 9,284,698

EJECTOR UNIT FOR A ROAD MILLING MACHINE OR THE LIKE

Wirtgen GmbH, (DE)

1. An ejector for a road milling machine, comprising:
an ejector body having a length and a width, the length being greater than the width, the body having a front conveying side
and a rear mounting side;

a lengthwise extending mounting extension protruding from the rear mounting side, the ejector body being symmetrical about
a lengthwise center line of the mounting extension in a widthwise direction, and the mounting extension having a mounting
extension width less than the width of the ejector body, so that the ejector body can be reversibly mounted in either of two
mounting positions rotated 180° from each other about a rotational axis extending through the front conveying side and the
rear mounting side; and

at least one mounting hole defined through the ejector body between the front conveying side and the rear mounting side and
extending through the mounting extension.

US Pat. No. 9,181,664

AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

20. A soil stabilizer or recycler machine, comprising:
a machine frame having a direction of travel, the frame having first and second lateral outer walls on opposite sides of the
machine frame;

a pair of front wheels and a pair of rear wheels for supporting the machine frame from a ground surface;
a working drum supported from the machine frame for working the ground surface;
a transverse guide supported from the machine frame; and
an operator's platform arranged in front of the machine frame in the direction of travel, the operator's platform being moveable
on the transverse guide transversely to the direction of travel outward to first and second outer limit positions, in each
of the outer limit positions the operator's platform overlying one of the lateral outer walls of the machine frame and extending
only partially beyond said one of the lateral outer walls of the machine frame, the operator's platform being enclosed by
a cabin, the platform having a seat for the machine driver located inside the cabin, the operator's platform and the cabin
and the seat being moveable between a raised operating position and a lowered transport position.

US Pat. No. 9,399,842

TEXTURE CURING MACHINE AS WELL AS METHOD FOR THE SUBSEQUENT TREATMENT OF A FRESHLY PRODUCED CONCRETE LAYER

Wirtgen GmbH, (DE)

1. A texture curing machine for the subsequent treatment of a freshly produced concrete layer having a width and extending
longitudinally in a working direction, comprising:
a machine frame;
a plurality of ground engaging units supporting the machine frame;
at least one longitudinal working device attached to the machine frame and configured to treat the concrete layer in a longitudinal
direction parallel to the working direction, the longitudinal working device including a resting position and an operating
position, the longitudinal working device being stationary relative to the machine frame when in its operating position;

at least one transverse working device attached to the machine frame and configured to treat the concrete layer in a transverse
direction transverse to the working direction, the transverse working device including a resting position and an operating
position, the transverse working device being movable to and fro across the width of the concrete layer when in its operating
position;

wherein both of the longitudinal and transverse working devices include a texturing device configured to apply a texture into
a not yet hardened surface of the concrete layer or both of the longitudinal and transverse working devices include a spraying
device configured to discharge a curing agent onto the not yet hardened surface of the concrete layer; and

each of the longitudinal and transverse working devices being alternately transferable from its respective resting position
to its respective operating position, with the other of the longitudinal and transverse working devices being in its respective
resting position, such that the longitudinal and transverse working devices do not collide with one another.

US Pat. No. 9,109,444

TOOL

Wirtgen GmbH, (DE)

1. A tool for mounting and demounting a chisel on a chisel holder, comprising:
an actuating unit including a power-operated bidirectionally displaceable actuator movable in a displacement direction; and
an actuating member connected to the actuator for movement with the actuator in the displacement direction, the actuating
member including:

a push-off section including a push-off surface facing away from the actuating unit for demounting the chisel from the chisel
holder upon extension of the actuator; and

a draw-in section spaced apart from the push-off section in the displacement direction and extending transversely to the displacement
direction for mounting the chisel on the chisel holder upon retraction of the actuator.

US Pat. No. 9,388,539

SELECTIVE CLAMPING OF CHASSIS

Wirtgen GmbH, (DE)

1. A method of controlling relative telescoping extension of multiple telescoping assemblies connecting a main frame of a
slipform paver to a side frame member of the slipform paver, the telescoping assemblies being extendible and retractable to
adjust a frame width of the slipform paver, each telescoping assembly having a telescopic lock associated with the telescoping
assembly, comprising:
(a) applying a common telescoping force across first and second telescoping assemblies to widen or narrow the frame width
of the slipform paver;

(b) monitoring extension of the first telescoping assembly;
(c) monitoring extension of the second telescoping assembly; and
(d) locking at least one of the telescopic locks for the first and second telescoping assemblies so as to determine which
of the telescoping assemblies is allowed to telescope under the application of the common telescoping force.

US Pat. No. 9,144,922

SHANK-TYPE PICK

Wirtgen GmbH, (DE)

1. A shank bit for a road milling machine or the like, comprising:
a bit head including a support segment having an annular support surface, the support surface having an outside diameter in
a range of from 30 mm to 60 mm; and

a bit shank having a longitudinal center axis and including:
a first cylindrical segment indirectly or directly adjacent to the bit head, the first cylindrical segment having a diameter
in a range of from 18 mm to 30 mm, and the first cylindrical segment having a length in the direction of the longitudinal
center axis in a range of from 4 mm to 15 mm, wherein a ratio of the outside diameter of the support surface to the diameter
of the first cylindrical segment is in a range of from 1.6 to 3.3; and

a second cylindrical segment indirectly or directly adjacent to the first cylindrical segment on an opposite end of the first
cylindrical segment from the bit head, the second cylindrical segment having a diameter in a range of from 14 mm to 25 mm,
wherein a diameter ratio of the diameter of the first cylindrical segment to the diameter of the second cylindrical segment
is in a range of from 1.1 to 2.5.

US Pat. No. 9,260,965

CHISEL HOLDER FOR A SOIL TREATMENT MACHINE

Wirtgen GmbH, (DE)

1. A tool apparatus for an earth working machine, comprising:
an insertion projection having a longitudinal projection center axis; and
a support member having an insertion projection side and a working side, the insertion projection extending from the insertion
projection side, the support member including:

a pair of rear bearing surfaces at a non-parallel angle to one another, the rear bearing surfaces being at least partially
located behind the insertion projection longitudinal center axis with reference to a tool advance direction; and

at least one front bearing surface at a non-parallel angle to each of the rear bearing surfaces, the at least one front bearing
surface being at least partially located in front of the insertion projection longitudinal center axis with reference to the
tool advance direction.

US Pat. No. 9,249,545

ROAD MILLING MACHINE, IN PARTICULAR SMALL MILLING MACHINE, FOR WORKING ROAD SURFACES

Wirtgen GmbH, (DE)

1. A road milling machine, comprising:
a machine frame;
a drum casing attached to the machine frame;
a milling drum supported from the machine frame in the drum casing; and
a milling drum drive including a drum gearbox mounted on the drum casing, the drum gearbox including:
a gearbox housing including a connecting flange, the connecting flange attached to the drum casing, the gearbox housing including
on an underside a cut-out extending radially inwards and dividing the gearbox housing into a first housing part arranged outside
of the drum casing and a second housing part protruding into the drum casing;

a reduction gear located in the first housing part outside of the drum casing; and
an output shaft extending from the first housing part into the second housing part, and connected to the milling drum to drive
the milling drum.

US Pat. No. 9,163,366

SLIPFORM PAVER

Wirtgen GmbH, (DE)

1. A slipform paver apparatus, comprising:
a chassis having a direction of operation;
left and right lifting columns configured to adjust the chassis in a heightwise direction;
a drive unit configured to cause the chassis to perform movements in translation and/or rotation;
a control unit configured to actuate the drive unit;
a mold including at least a mold upper part and two opposed mold side parts, the mold side parts being configured to extend
down from the mold upper part toward a ground surface to bound a molded structure;

a mounting unit configured to mount the mold including the mold upper part and two opposed mold side parts for molding flowable
material such that the mold upper part and two opposed mold side parts are movable with the mounting unit, the mounting unit
being pivotably connected to the chassis for pivoting about an axis extending in the direction of operation; and

a pivoter unit connected to the mounting unit and configured to pivot the mounting unit about the axis extending in the direction
of operation, so as to tilt the mounting unit independently of any adjustment of the lifting columns;

wherein the control unit is operably associated with the pivoter unit and configured to automatically actuate the pivoter
unit to cause the mounting unit and the mold upper part and two opposed mold side parts to perform automatic pivoting movements
about the axis relative to the chassis.

US Pat. No. 9,157,320

TOOL FOR REMOVING A CHISEL

Wirtgen GmbH, (DE)

1. A tool for removing a chisel from a chisel holder, comprising:
a fork-shaped base element including first and second elongated base element portions separated by a space, the base element
including a base element support surface defined on the first and second elongated base element portions and facing in a first
direction and configured to support the base element directly or indirectly against the chisel holder, the base element and
the first and second elongated base element portions being formed in one piece;

an actuating member pivotally connected to the base element, the actuating member being pivotable relative to the base element
from an initial position, in a direction opposite the first direction and toward the space between the first and second elongated
base element portions to a removal position to remove the chisel from the chisel holder the actuating member having a distal
end arranged to move on a path aimed between the first and second elongated base element portions as the actuating member
moves from the initial position toward the removal position; and

a power source including a cylinder-piston system or an electric motor unit mounted on the base element and operably associated
with the actuating member to move the actuating member between the initial position and the removal position.

US Pat. No. 9,068,304

AUTOMOTIVE MACHINE FOR PRODUCING CARRIAGEWAYS

Wirtgen GmbH, (DE)

1. A soil stabilizer apparatus, comprising:
a chassis having a direction of travel from a rearward end toward a forward end;
a forward running gear supporting the forward end of the chassis;
a rear running gear supporting the rearward end of the chassis, at least one of the running gears being driven so that the
apparatus is self-propelled;

first and second pivot arms having upper ends pivotally connected to first and second sides, respectively, of the chassis
and defining a pivotal axis transverse to the direction of travel;

a working drum located between the forward running gear and the rear running gear and mounted on the first and second pivot
arms, the working drum including a drum axis extending transversely to the direction of travel; and

a combustion engine arranged transversely between the pivot arms and behind the forward running gear and in front of the rear
running gear, the engine having an output axis co-axial with the pivotal axis so that the pivot arms and the working drum
pivot about the output axis, the engine being operably connected to the at least one of the running gears and the working
drum for driving the at least one of the running gears and the working drum.

US Pat. No. 9,809,937

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR DISCHARGING MILLED MATERIAL

Wirtgen GmbH, (DE)

17. A method of discharging worked-off milled material of an automotive milling machine onto a loading surface of a transport
vehicle, the method comprising:
(a) working off milled material with a working drum of the milling machine;
(b) transporting the milled material from the working drum with a transport conveyor and discharging the milled material from
the transport conveyor onto the loading surface of the transport vehicle at a conveying speed, the transport conveyor being
slewable sideways relative to a longitudinal center line of a machine frame of the milling machine to adjust a slewing angle
of the transport conveyor, and the transport conveyor having an adjustable elevation angle to adjust a discharge height of
the transport conveyor;

(c) automatically controlling positioning of the milled material on the loading surface of the transport vehicle by controlling
at least the slewing angle of the transport conveyor; and

(d) specifying a maximum permissible slewing angle range and monitoring the slewing angle to maintain the slewing angle within
the maximum permissible slewing angle range, wherein the specified maximum permissible slewing angle range is unsymmetrical
in relation to the longitudinal center line of the machine frame in accordance with a determined non-contaminable space on
one side of the machine frame and the transport vehicle.

US Pat. No. 9,359,729

MILLING MACHINE WITH LOCATION INDICATOR SYSTEM

Wirtgen GmbH, (DE)

1. A construction machine apparatus, comprising:
a plurality of ground engaging supports;
a machine frame supported from the ground engaging supports;
a milling drum supported from the machine frame;
a milling drum location detection system configured to determine a drum location of the milling drum in an external reference
system; and

a location indicator system, including:
a memory configured to store information identifying a location of an area to be avoided in the external reference system;
and

a controller configured to compare the drum location to the location of the area to be avoided.

US Pat. No. 9,328,468

SELF-PROPELLED ROAD MILLING MACHINE WITH ADJUSTABLE WIDTH SCRAPER BLADE

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine for processing road surfaces, comprising:
a machine frame including a lateral outer side;
a height adjustable chassis configured to support the machine frame from a road surface;
a milling drum housing attached to the machine frame, the milling drum housing including a lateral end terminating substantially
flush with the lateral outer side of the machine frame to define a zero-clearance side in order to enable milling as close
along edges or obstacles as possible;

a milling drum mounted in the milling drum housing to rotate about a milling drum axis;
a milling drum drive connected to the milling drum to drive the milling drum such that the milling drum mills a milling track
in the road surface, the milling track having a milling edge; and

wherein the milling drum housing includes a height adjustable scraper blade closing a rear of the milling drum housing and
configured to engage the milling track, the scraper blade including:

a main scraper blade body having a lower edge and having first and second lateral ends;
a first movable blade element laterally movable relative to the main scraper blade body, the first movable blade element including
a blade element lower edge essentially flush with the lower edge of the main scraper blade body, and the first movable blade
element being height adjustable together with the main scraper blade body;

a first piston-cylinder element connected to the first movable blade element and configured to provide a hydraulic biasing
force to resiliently bias the first laterally movable blade element laterally outward relative to the first lateral end of
the main scraper blade body in a direction parallel to the milling drum axis for dynamic adjustment of a width of the scraper
blade during milling operation; and

wherein the first piston-cylinder element is adjustable to adjust the hydraulic biasing force against the first movable blade
element.

US Pat. No. 9,322,139

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR OPERATING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine, comprising:
a machine frame;
a milling drum housing attached to the machine frame;
a milling drum arranged in the milling drum housing for milling material and creating a milled track behind the milling drum;
a scraper blade located behind the milling drum;
a drive unit arranged to adjust a height of the scraper blade relative to the milling drum;
at least one height sensor arranged to detect a distance between at least one reference point on the scraper blade and milled
material remaining in the milled track; and

a control unit operably connected to the height sensor and the drive unit, the control unit being configured such that the
height of the scraper blade is adjusted depending on the distance detected by the height sensor.

US Pat. No. 9,151,157

CHISEL HOLDER

Wirtgen GmbH, (DE)

1. A tool apparatus for an earth working machine, comprising:
an insertion projection having a longitudinal insertion axis; and
a support member having an insertion projection side and a working side, the insertion projection extending from the insertion
projection side, the working side facing away from the insertion projection, the support member including:

two first bearing surfaces at a first angle to one another, the two first bearing surfaces diverging from the insertion projection
side toward the working side; and

two second bearing surfaces at a second angle to one another, the two second bearing surfaces diverging from the insertion
projection side toward the working side;

wherein:
the two first bearing surfaces are arranged at least partly in front of the longitudinal insertion axis with reference to
a tool advance direction; and

the two second bearing surfaces are arranged at least partly behind the longitudinal insertion axis with reference to the
tool advance direction.

US Pat. No. 9,944,174

SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled construction machine, comprising:a machine frame;
a working unit arranged on the machine frame and configured to carry out work for a building operation;
a drive unit arranged on the machine frame and configured to drive the working unit, the drive unit including at least one internal combustion engine;
a first tank formed as an integral component of the machine frame and having an interior, the first tank being either a fuel tank configured to hold fuel for the at least one internal combustion engine or a water tank, the first tank including an access opening providing access to the interior of the first tank; and
an operating material tank received in the first tank through the access opening so that the operating material tank is directly exposed to the fuel in the fuel tank or the water in the water tank, the operating material tank being configured to hold liquid operating material.

US Pat. No. 9,551,118

SCRAPER DEVICE, AS WELL AS CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame;
a milling drum connected to the machine frame to rotate about a milling drum axis;
a drum casing attached to the machine frame;
a scraper blade located behind the milling drum with reference to a direction of travel of the construction machine, the scraper
blade including an upper part and a lower part, the lower part being movable in a sliding non-pivotal motion relative to the
upper part;

a lifting actuator connected between the upper and lower parts to slide the lower part relative to the upper part between
a downward extended position and an upward retracted position; and

a substantially horizontally oriented swiveling actuator, separate from the lifting actuator, connected between the machine
frame and the upper part of the scraper blade, the swiveling actuator being configured to pivot the scraper blade about a
swiveling axis parallel to the milling drum axis.

US Pat. No. 9,228,434

CHISEL HOLDER

Wirtgen GmbH, (DE)

1. A tool apparatus for an earth working machine, comprising:
a support member having an insertion projection side and a working side, the working side facing away from the insertion projection
side, the working side defining a bit longitudinal center axis; and

an insertion projection attached to the support member and extending from the insertion projection side, the insertion projection
having a longitudinal insertion axis, the bit longitudinal center axis of the working side being inclined forwardly relative
to the longitudinal insertion axis of the insertion projection to define a forward tool advance direction, the insertion projection
including:

at least two convex abutment surfaces circumferentially separated from one another and arranged in front of the longitudinal
insertion axis with reference to the tool advance direction; and

at least one pressure surface arranged behind the longitudinal insertion axis with reference to the tool advance direction;
wherein the at least two convex abutment surfaces are circumferentially separated from one another b a recess defined in the
insertion projection.

US Pat. No. 9,765,619

TOOL

Wirtgen GmbH, (DE)

1. A method of installing a chisel in a chisel holder, comprising:
(a) extending an actuating member of a mounting tool through a chisel receptacle bore of the chisel holder;
(b) engaging the actuating member with a shank of the chisel; and
(c) retracting the actuating member and pulling the chisel shank into the chisel receptacle bore.

US Pat. No. 9,540,779

ROAD MILLING MACHINE FOR THE TREATMENT OF ROAD PAVEMENTS, AS WELL AS METHOD FOR PIVOTING A TRAVELLING DRIVE UNIT OF A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

26. A method of operating a milling machine, the milling machine including:
a machine frame;
first and second rear ground engaging units, at least the first rear ground engaging unit including a travel drive;
first and second rear lifting columns supporting the machine frame from the first and second rear ground engaging units, respectively;
a working drum connected to the machine frame and rotatable about a drum axis;
a pivot arm connected to the first rear lifting column and pivotally connected to the machine frame at a pivot axis, the pivot
arm being pivotable to move the first rear lifting column and the first rear ground engaging unit between a first outer end
position projecting laterally relative to the machine frame and a second inner end position for close-to-edge milling; and

a steering assembly configured to adjust a steering angle of the first rear ground engaging unit at least in the inner end
position; and

the method comprising:
pivoting the pivot arm and the first rear ground engaging unit by driving the travel drive while the first rear ground engaging
unit is in contact with the ground surface.

US Pat. No. 9,435,086

SELF-PROPELLED ROAD-MILLING MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled road-milling machine, comprising:
a chassis;
a driver's position arranged on the chassis for a driver of the road-milling machine;
a milling drum supported from the chassis for milling off material;
a material handling conveyor supported from the chassis for feeding the milled off material to a discharge point where the
milled off material is to be received by a transporting vehicle separate from the road-milling machine;

at least one control unit carried by the road-milling machine, the control unit being configured to receive during forward
operation of the road-milling machine an entry by the driver of the road-milling machine of an input corresponding to one
of at least two different states of operation, the at least two states of operation including:

a first state of operation wherein the transporting vehicle is to move forward; and
a second state of operation wherein the transporting vehicle is to stop; and
at least one visual indicator operably associated with the control unit and configured to indicate to a driver of the transporting
vehicle which one of the at least two states of operation has been entered on the control unit by the driver of the road-milling
machine.

US Pat. No. 9,382,676

ROAD MILLING MACHINE FOR WORKING ROAD OR GROUND SURFACES

Wirtgen GmbH, (DE)

1. A road milling machine for working road or ground surfaces, comprising:
a machine frame including a lateral outer side;
left and right front wheels or crawler tracks, and left and right rear wheels or crawler tracks, supporting the machine frame;
a milling drum supported from the machine frame between the rear wheels or crawler tracks, the milling drum including an end
located substantially flush with the lateral outer side of the machine frame such that the lateral outer side defines a zero-clearance
side to enable milling close to obstacles;

left and right height adjustable lifting columns connecting the left and right rear wheels or tracks to the machine frame
such that a milling depth of the milling drum is adjustable by adjusting a height of the lifting columns;

left and right pivoting columns connecting the left and right front wheels or tracks to the machine frame, each pivoting column
having a pivot axis;

left and right steering levers connected to the left and right front wheels or tracks, respectively, so as to steer each of
the front wheels or tracks in steering angles about the pivot axes of their respective pivot columns;

a steering tie rod including a rigid connecting part and an arm projecting from the connecting part, the connecting part coupling
the steering levers of the front wheels or tracks to one another for synchronous adjustment of the steering angles; and

at least one steering cylinder including a free end coupled to the arm of the steering tie rod to adjust the steering angles;
wherein the arm of the steering tie rod extends away from the connecting part and between the pivoting columns, with the connecting
part and the steering cylinder being arranged on opposite sides of an imaginary line connecting the pivot axes of the pivoting
columns.

US Pat. No. 9,334,733

BIT HOLDER AND BASE PART FOR RECEIVING A BIT HOLDER

Wirtgen GmbH, (DE)

1. A bit holder, comprising:
an insertion projection having a longitudinal axis, the insertion projection including a bearing segment including at least
one bearing surface; and

a holding projection including a bit receptacle, the bit receptacle having a bit receptacle longitudinal center axis enclosing
an obtuse angle with the longitudinal axis of the insertion projection, the holding projection including a supporting segment
including at least one supporting surface;

wherein the longitudinal axis of the insertion projection and the bit receptacle longitudinal center axis define a transverse
central plane of the bit holder;

wherein at least one of the at least one bearing surface and the at least one supporting surface includes two surfaces located
on opposite sides of the transverse central plane, the two surfaces being arranged at an angle to each other and thus non-parallel
to each other;

wherein the insertion projection includes an insertion projection front side facing in a tool feed direction, and the insertion
projection includes on the insertion projection front side at least one pressure surface for impingement with a screw; and

wherein the at least one bearing surface is located behind the longitudinal axis of the insertion projection, and the at least
one supporting surface is located in front of the longitudinal axis of the insertion projection.

US Pat. No. 9,267,373

CHISEL HOLDER AND LOWER TOOL PART FOR A CHISEL HOLDER

Wirtgen GmbH, (DE)

1. A tool apparatus, comprising:
a base part having a convexly curved support surface having a spherical surface contour;
an insertion projection extending from the base part; and
a bit longitudinal center axis defined in the base part, the bit longitudinal center axis intersecting the support surface.

US Pat. No. 9,126,776

MILLING MACHINE, IN PARTICULAR SURFACE MINER, AND METHOD FOR MINING MILLED MATERIAL OF AN OPEN CAST SURFACE

Wirtgen GmbH, (DE)

1. A method of milling a ground surface comprising:
(a) milling the ground surface along a milling track with a milling machine;
(b) loading a container of a truck that travels adjacent to the milling machine by transporting milled material via a conveying
in device of the milling machine to the container; and

(c) regulating the loading of step (b) by automatically controlling a relative position between the container and the conveying
device;

wherein step (c) further comprises automatically controlling the relative position as a function of an advance speed of the
milling machine.

US Pat. No. 9,096,977

MILLING MACHINE WITH LOCATION INDICATOR SYSTEM

Wirtgen GmbH, (DE)

1. A construction machine apparatus, comprising:
a plurality of ground engaging supports;
a machine frame supported from the ground engaging supports;
a milling drum supported from the machine frame;
a milling drum location detection system configured to determine a drum location of the milling drum in an external reference
system; and

a location indicator system, including:
a memory configured to store information identifying a location of an area to be avoided in the external reference system;
and

a controller configured to compare the drum location to the location of the area to be avoided, and to provide an output corresponding
to a proximity of the milling drum to the location of the area to be avoided.

US Pat. No. 9,068,302

MIXER BAR FOR A STABILIZER/RECYCLER

Wirtgen GmbH, (DE)

1. A mixer bar for a stabilizer/recycler,
wherein the mixer bar is embodied as a forged part and has a cross-sectional profile that varies at least locally transversely
to a tool feed direction, the mixer bar having a length defined by the mounting surface, a height extending transversely to
the mounting surface, and a lateral width extending transversely to both the length and the height, the lateral width being
narrower than both the length and the height;

wherein the mixer bar further includes:
an attachment side including a mounting surface for mounting on a drum surface;
a tool holder receptacle; and
a protrusion arranged in front of the tool holder receptacle in the tool feed direction, the protrusion having a greater width,
transversely to the tool feed direction, than a region adjoining behind the protrusion.

US Pat. No. 9,856,613

SELF-PROPELLED ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled civil engineering machine, comprising:
a machine frame;
at least two rear ground engaging supports and at least one front ground engaging support configured to support the machine
frame from a ground surface, at least one of the rear ground engaging supports being a movable rear ground engaging support
movable into an inner support working position in relation to a longitudinal side of the machine frame and into an outer support
working position in relation to the longitudinal side of the machine frame;

a working roller arranged between the rear ground engaging supports; and
a cleaning assembly including a cleaning tool arranged in front of the working roller in a working direction, the cleaning
unit being configured to remove material from a portion of the ground surface over which the movable rear ground engaging
support will travel in at least the outer support working position.

US Pat. No. 9,121,141

SLIPFORM PAVER, AS WELL AS METHOD FOR ADJUSTING THE WIDTH OF A MOLD DEVICE

Wirtgen GmbH, (DE)

1. A slipform paver apparatus, comprising:
a machine frame including first and second longitudinal members extending parallel to a working direction and at least one
telescopable cross member extending transverse to the working direction for variable adjustment of a working width of the
machine frame;

a plurality of ground-engaging units supporting the machine frame; and
an adjustable width mold supported from the machine frame, the mold including:
at least one central mold element; and
at least one outer mold element connected to one of the longitudinal members such that the at least one outer mold element
is movable together with the connected longitudinal member relative to the central mold element during adjustment of the working
width of the machine frame.

US Pat. No. 9,399,843

AUTOMOTIVE ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

16. A road milling machine, comprising:
a machine frame;
a drum housing attached to the machine frame, the drum housing including a drive-side drum housing wall and a removable drum
housing wall;

a milling drum located between the drive-side drum housing wall and the removable drum housing wall, the milling drum including
a drum body and a milling tube removably received on the drum body, so that the milling tube is removable by removing the
removable drum housing wall and removing the milling tube from the drum body;

a planetary reduction gear including a planetary reduction gear outer housing attached to the machine frame so that the planetary
reduction gear outer housing is fixed relative to the machine frame; and

a milling drum drive connected to the planetary reduction gear on a side of the planetary reduction gear opposite from the
milling drum.

US Pat. No. 9,376,774

DEVICE, AS WELL AS METHOD FOR WORKING GROUND SURFACES OR ROADWAYS

Wirtgen GmbH, (DE)

1. An apparatus for working ground surfaces or roadways, comprising:
a machine frame;
a drum housing supported from the machine frame;
a working drum located in the drum housing;
at least one spraying system including at least first and second outlet nozzle assemblies arranged next to one another and
directed toward the working drum for spraying agents, each of the first and second outlet nozzle assemblies including:

an outlet nozzle including a nozzle channel, the outlet nozzle including an outer wall including at least one cut-out configured
to conduct spraying agent into the outlet nozzle;

a drivable closing mechanism including a closing element movable on a specified path between an open position in which the
nozzle channel is fully uncovered, and a closed position in which the closing element closes the nozzle channel; and

the outlet nozzle and the closing element being configured such that a flow cross-section between the nozzle channel and the
closing element is variable in accordance with a position of the closing element on the specified path; and

a controller operably associated with the drivable closing mechanisms and configured to position at least one of the closing
elements in at least one intermediate position between the open and closed positions of the at least one closing element.

US Pat. No. 9,234,319

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR STEERING AN AUTOMOTIVE MILLING MACHINE

Wirtgen GmbH, (DE)

1. An automotive milling machine, comprising:
a machine frame with a longitudinal axis;
a plurality of ground engaging units configured to support the machine frame from a ground surface, at least one of the ground
engaging units being steerable in a steering angle;

working drum connected to the machine frame;
a transport conveyor slewable sideways in a slewing angle relative to the machine frame about an essentially vertical first
axis; and

a controller including a detection and control system configured to detect at least one parameter and control the slewing
angle of the transport conveyor in accordance with the at least one parameter, the at least one parameter including the steering
angle; and

wherein the detection and control system is configured to automatically control the slewing angle of the transport conveyor
such that when the machine is steered in a curved path during forward or reverse travel an end of the transport conveyor is
guided along a path within a track previously traveled over or to be traveled over by the milling machine.

US Pat. No. 9,217,228

SELF-PROPELLED CONSTRUCTION MACHINE FOR WORKING ROADWAYS OR SURFACES AND METHOD FOR COOLING THE MILLING TOOLS OF A MILLING DRUM OF A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled construction machine for working roadways or surfaces, comprising:
a machine frame;
front and rear ground engaging units supporting the machine frame;
a milling drum supported from the machine frame and rotatable about an axis of rotation, the milling drum including a plurality
of milling tools distributed around a circumference of the milling drum;

a drum drive operably associated with the milling drum;
a coolant reservoir; and
at least one coolant nozzle connected to the coolant reservoir, the coolant nozzle being oriented to produce at least one
coolant jet extending substantially parallel to the axis of rotation of the milling drum to spray the milling tools.

US Pat. No. 9,879,390

ROAD MILLING MACHINE AND METHOD FOR MEASURING THE MILLING DEPTH

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine, comprising:
a machine frame;
at least two front ground engaging supports, and at least one rear ground engaging support;
front and rear lifting columns supporting the frame from the ground engaging supports;
a milling roller supported from the frame for treatment of a ground surface;
a height adjustable stripping plate arranged behind the milling roller and operable to be lowered, during operation, into
a milling track generated by the milling roller;

first and second height adjustable side plates arranged on opposite sides of the milling roller; and
a plurality of position sensors, each of the first and second side plates including at least two of the position sensors spaced
apart in a traveling direction of the milling machine, wherein each position sensor generates position signals representing
changes in position for a respective side plate.

US Pat. No. 9,719,217

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR VISUALIZING THE WORKING ENVIRONMENT OF A CONSTRUCTION MACHINE MOVING ON A TERRAIN

Wirtgen GmbH, (DE)

1. A self-propelled construction machine comprising:
a chassis supporting a machine frame and comprising front and rear wheels or running gears for moving the machine in a working
direction;

a working tool for working a terrain;
an image recorder fixed relative to the machine frame and configured to record an image segment of a region of the terrain
in a first coordinate system dependent on a position and orientation of the construction machine on the terrain;

a display configured to display the image segment of the terrain;
a data storage comprising project data describing a shape and location of at least one project in a second coordinate system
independent of the position and orientation of the construction machine, wherein the at least one project comprises one or
more structures to be installed or one or more portions of the terrain to be modified, and

a data processor configured to superimpose a depiction of at least part of the at least one project located in the region
of the terrain associated with the image segment on the displayed image segment of the terrain, wherein at least part of the
at least one project is visualised in the image segment.

US Pat. No. 9,663,904

TEXTURE CURING MACHINE AS WELL AS METHOD FOR THE SUBSEQUENT TREATMENT OF A FRESHLY PRODUCED CONCRETE LAYER

Wirtgen GmbH, (DE)

1. A texturing machine for the subsequent treatment of a freshly produced concrete layer, the texturing machine comprising:
a machine frame;
a plurality of ground-engaging units configured to support the machine frame from a ground surface for travel in a working
direction;

at least one texturing device supported from the machine frame and movable relative to the machine frame transverse to the
working direction, the at least one texturing device including a plurality of texturing tools configured to apply a texture
into the not yet hardened surface of the concrete layer; and

a controller unit configured to:
detect a travelling speed of the machine frame in the working direction;
detect a traversing speed of the at least one texturing device transverse to the working direction relative to the machine
frame; and

control at least one of the travelling speed and the traversing speed to produce a specified texturing angle resulting from
a relationship between the travelling speed and the traversing speed.

US Pat. No. 9,163,502

CHISEL HOLDER, AND CHISEL HOLDER SYSTEM COMPRISING A CHISEL HOLDER AND A BASE PART

WIRTGEN GMBH, Windhagen ...

1. A chisel holder, comprising:
a body region having a chisel-receiving opening which is open at least toward a chisel insertion side of the body region;
and

a fastening shank which extends from a supporting side of the body region and which has a shank longitudinal axis (LB) and a main outer circumferential surface;

wherein on the fastening shank there are provided, on a first side, a fastening element loading region and, on a second side
situated opposite in relation to the shank longitudinal axis (LB), a supporting region with supporting surface regions which are inclined relative to one another and adjoin one another in
a transition region extending in the direction of the shank longitudinal axis (LB), wherein the fastening shank is formed, in the region of its main outer circumferential surface, with a round outer circumferential
contour, wherein at least one supporting surface region is formed so as to protrude at least in regions radially outward in
relation to the shank longitudinal axis (LB) beyond the main outer circumferential surface of the fastening shank, and wherein the transition region is formed in the
manner of a depression.

US Pat. No. 9,181,660

SELF-PROPELLED CIVIL ENGINEERING MACHINE AND METHOD OF CONTROLLING A CIVIL ENGINEERING MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled civil engineering machine,
having a chassis,
having a working unit arranged on the chassis of the machine, the working unit configured to produce structures on a piece
of ground or to change the piece of ground,

having a drive unit configured to enable the civil engineering machine to perform translatory and/or rotational movements
on the ground, and

having a control and calculating unit,
the control and calculating unit being configured to determine a deviation from a desired distance or path of travel of at
least one reference point on the civil engineering machine, the desired distance or path of travel being defined by at least
one straight line and/or at least one curve, and

the control and calculating unit being configured to control the drive unit depending on the deviation from the desired distance
or path of travel of the at least one reference point on the civil engineering machine, the reference point thus moving along
the desired distance or path of travel or along the desired distance or path of travel at a preset spacing therefrom,

characterised in that
the control and calculating unit is configured such that, as the civil engineering machine moves, a position of the at least
one reference point relative to the civil engineering machine can be changed continuously depending on a position of the at
least one reference point relative to the desired distance or path of travel.

US Pat. No. 9,096,976

SELF-PROPELLED BUILDING MACHINE AND METHOD FOR OPERATING A BUILDING MACHINE

Wirtgen GmbH, (DE)

14. A method of operating a self-propelled building machine, the machine having a machine frame and running gears, the machine
having at least one working device arranged on the machine frame to be brought into contact with the ground, the method comprising:
(a) lowering the machine frame and thereby adjusting a working depth of the working device in the ground while the building
machine is at a standstill; and

(b) during step (a), detecting a weight imposed by the building machine on at least one of the running gears, and determining
whether the imposed weight falls below a predetermined threshold value thus indicating an uncontrolled operating state.

US Pat. No. 10,227,740

MILLING MACHINE FOR WORKING GROUND SURFACES, TRANSFER DEVICE, AS WELL AS METHOD FOR THE TRANSFER OF MILLED-OFF MATERIAL

Wirtgen GmbH, (DE)

14. A transfer apparatus for a milling machine, the milling machine including a first conveyor for transferring milled-off material onto a second conveyor, the second conveyor being pivotable relative to the first conveyor about a vertical pivoting axis and a horizontal pivoting axis, the transfer apparatus comprising:a transfer housing including a downwardly open transfer opening, the transfer housing being configured to be fixedly attached to the first conveyor so that the transfer opening is essentially coaxial to the vertical pivoting axis;
a reception housing including an upwardly open reception opening, the reception housing being configured to be fixedly attached to the second conveyor, the reception housing including a support surface; and
a lid covering at least a major part of the reception opening, the lid including a passage opening configured to allow communication of the transfer opening with the reception opening, the lid being configured to be supported on the support surface.

US Pat. No. 9,938,675

SELF-PROPELLED COLD MILLING MACHINE, AS WELL AS METHOD FOR MILLING OFF AND TRANSPORTING AWAY A MILLED-OFF STREAM OF MATERIAL

Wirtgen GmbH, (DE)

1. A milling machine for working ground surfaces, comprising:a machine frame;
a milling drum supported from the machine frame;
at least one conveyor arranged on the machine frame to accept milled-off material from the milling drum, the at least one conveyor including a discharge end to discharge the milled-off material in a conveying direction along a parabolic trajectory; and
a shield of multi-part design including separate lateral shield sections, the shield including an operating position in which the shield is arranged to shield the milled-off material leaving the at least one conveyor along at least part of the parabolic trajectory.

US Pat. No. 9,714,488

ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A road milling machine for milling a ground surface, comprising:
a machine frame;
a milling drum housing supported from the machine frame such that an opening exists between the milling drum housing and the
ground surface;

a milling drum positioned in the milling drum housing and rotatable in a predetermined direction of rotation about an axis
of rotation; and

a hold-down device arranged to close the opening, the hold-down device being configured such that a gap is defined between
the milling drum and the hold-down device, and a distance between the axis of rotation and the hold-down device increases
upward in the predetermined direction of rotation at least over a section of the gap.

US Pat. No. 9,670,630

SELF-PROPELLED BUILDING MACHINE

Wirtgen GmbH, (DE)

10. A self-propelled building machine, comprising:
a machine frame;
at least one left-hand running gear and at least one right-hand running gear relative to a direction of working, the running
gears configured to support the machine frame from a ground surface;

at least one working roller provided on the machine frame and configured to engage and work the ground surface;
an adjustable support system including left and right adjustable supports configured to raise and lower each of the left-hand
and right-hand running gears, respectively, relative to the machine frame, to adjust a milling depth of the working roller;

a sensor system configured to detect sudden step changes up and down in a height of the ground surface as the milling machine
moves from a previously cut section of material across an island of uncut material, the sudden step changes extending transverse
to the direction of working, and to generate control signals indicative of the presence of the sudden step changes in height
of the ground surface; and

a control unit configured to receive the control signals from the sensor system and to activate the adjustable support system
to raise and lower the running gears in response to the control signals received from the sensor system, the control unit
having a control mode in which the control unit is configured such that the milling depth is changed from zero to a predetermined
depth equal to the height of the island and then back to zero as the milling machine moves from the previously cut section
of material across the island of uncut material so that the building machine mills off the island.

US Pat. No. 9,663,906

SELECTIVE CLAMPING OF CHASSIS

Wirtgen GmbH, (DE)

1. A slipform paving machine, comprising:
a machine frame including front and rear laterally telescoping assemblies to provide an adjustable width of the machine frame;
front and rear linear actuators arranged to provide powered lateral extension and retraction of the front and laterally telescoping
assemblies, respectively;

front and rear extension sensors associated with the front and rear linear actuators, respectively, for generating extension
signals representative of the extension of the linear actuators; and

a controller configured to receive the extension signals and to control an operation of the linear actuators to control extension
of the front and rear telescoping assemblies to adjust the width of the machine frame.

US Pat. No. 9,963,842

METHOD FOR OPTIMIZING A CUTTING PROCESS IN ROAD MILLING MACHINES, AS WELL AS MILLING MACHINE FOR MACHINING ROAD COVERINGS

Wirtgen GmbH, (DE)

1. A milling machine for machining road coverings, comprising:a machine frame;
one or more front ground engaging traveling mechanisms supporting the machine frame;
one or more rear ground engaging traveling mechanisms supporting the machine frame;
a milling drum fitted with milling tools;
an on board cooling liquid storage tank supported by the machine frame;
a spray system arranged to spray the cooling liquid from the tank onto the milling tools;
an internal combustion drive motor powering the traveling mechanisms and the milling drum, the drive motor including an electronic motor control configured to detect a characteristic of the drive motor; and
a controller operably associated with the electronic motor control and the spray system, the controller configured to control a flow rate of cooling liquid to the spray system in dependence at least in part upon:
the characteristic of the drive motor detected by the electronic motor control;
a milling depth of the milling drum;
a milling width of the milling drum;
an advance speed of the milling machine; and
a material constant.

US Pat. No. 9,388,537

SWING OVER STEERING

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame;
first and second swing legs pivotally connected to the machine frame;
first and second ground engaging units steerably connected to the first and second swing legs, respectively, the ground engaging
units including drive motors configured such that the ground engaging units are driven across a ground surface by the drive
motors;

a first steering sensor configured to detect a first steering angle of the first ground engaging unit relative to the first
swing leg:

a second steering sensor configured to detect a second steering angle of the second ground engaging unit relative to the second
swing leg;

a first lock configured to selectively lock and unlock the first swing leg in pivotal position relative to the machine frame;
a second lock configured to selectively lock and unlock the second swing leg in pivotal position relative to the machine frame;
and

a controller including a swing leg pivot mode configured to allow each of the first and second swing legs to pivot relative
to the machine frame in response to steering of the ground engaging unit connected to each swing leg as the machine is driven
across the ground surface by the ground engaging units.

US Pat. No. 9,121,145

BUILDING MACHINE

Wirtgen GmbH, (DE)

1. A building machine, comprising:
a chassis;
a running gear supporting the chassis;
a working unit supported from the chassis and comprising one or more implements, each implement controlled by one or more
actuators;

one or more sensors configured to provide output signals representative of an associated operation;
a Programmable Logic Controller (PLC) storing one or more programs and operational parameters and thereby configured to
receive and process the output signals from the one or more sensors, and
transmit control signals to the one or more actuators to control the operation of the working unit;
a display unit configured to display one or more operational variables of the machine or one or more operational states of
the machine in the form of characters or images;

a central data processing unit including a main processor and a graphic unit, the central data processing unit being configured
to control the display by the display unit of the one or more operational variables of the machine or the one or more operational
states of the machine in the form of characters or images;

a first data bus connecting the central data processing unit with the PLC, the first data bus being configured to operate
according to a first data transmission method; and

a second data bus connecting the central data processing unit with the display unit, the second data bus being configured
to operate according to a second data transmission method different from the first data transmission method.

US Pat. No. 9,879,391

ROAD MILLING MACHINE AND METHOD FOR MEASURING THE MILLING DEPTH

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine, comprising:
a machine frame;
at least two front ground engaging supports, and at least one rear ground engaging support;
front and rear lifting columns supporting the frame from the ground engaging supports, each of the front and rear lifting
columns comprising a position sensor configured to detect a lifted condition for a respective lifting column;

a milling roller supported from the frame for treatment of a ground surface;
a height adjustable stripping plate arranged behind the milling roller and operable to be lowered, during operation, into
a milling track generated by the milling roller; and

first and second height adjustable side plates arranged on opposite sides of the milling roller, at least one of the side
plates comprising a plurality of position sensors spaced apart in a traveling direction of the milling machine, wherein each
side plate position sensor generates position signals representing changes in position for a respective side plate.

US Pat. No. 9,873,994

METHOD FOR DETERMINING THE WEAR STATE

Wirtgen GmbH, (DE)

1. A method for determining a wear state of a milling tool mounted on a milling roller of a milling machine, the method comprising:
(a) determining a position value of at least one point on the milling tool by sensing the position value using a measuring
sensor positioned in association with the milling roller, wherein an output from the measuring sensor corresponds to a respective
distance between the measuring sensor and the at least one point on the milling tool; and

(b) determining the wear state of the milling tool by comparing in an automated data processing device the position value
to a reference value.

US Pat. No. 9,840,816

CONSTRUCTION MACHINE, AS WELL AS METHOD FOR MILLING OFF AND TRANSPORTING AWAY A MILLED-OFF STREAM OF MATERIAL OF A CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

22. A method of operating a construction machine including a milling drum, the method comprising:
(a) milling off material from a ground surface with the milling drum;
(b) accepting milled-off material from the milling drum on a conveyor;
(c) transporting the milled-off material between a lower transport belt and an upper cover belt of the conveyor along at least
a part of a length of the lower transport belt to a discharge end of the conveyor; and

(d) discharging the milled-off material from the discharge end of the conveyor along a parabolic trajectory to a point of
discharge;

wherein a projecting section of the upper cover belt projects beyond a discharge end of the lower transport belt; and
wherein the method further includes pivoting the projecting section and thereby adjusting the parabolic trajectory of the
milled-off material.

US Pat. No. 9,797,099

TRANSITION ON THE FLY

Wirtgen GmbH, (DE)

1. A method of operating a slipform paving machine, the method comprising:
(a) providing a slipform paving machine including:
a machine frame including a main frame module and at least one laterally extendable side frame member, the at least one laterally
extendable side frame member being laterally extendable relative to the main frame module to vary a frame width;

at least one first side ground engaging unit and at least one second side ground engaging unit;
front and rear first side height adjustable supports supporting the machine frame from the at least one first side ground
engaging unit;

at least one second side height adjustable support supporting the machine frame from the at least one second side ground engaging
unit; and

a concrete mold supported from the machine frame beneath the machine frame and laterally between the at least one first side
ground engaging unit and the at least one second side ground engaging unit, the mold having a variable mold width;

(b) moving the slipform paving machine forward in an operating direction and molding concrete into a concrete slab structure
extending between the ground engaging units and behind the concrete mold, the structure having an upper surface and lateral
concrete sides;

(c) during step (b) sensing a location in an external reference system of at least two 3D stringless reference objects, each
of the objects being fixed relative to at least one of the main frame module and the at least one laterally extendable side
frame member;

(d) controlling a direction and height of the machine frame with an automatic control system in response to signals corresponding
to the locations of the two 3D stringless reference objects; and

(e) at some time during step (b) continuously adjusting the mold width and forming a continuous transition in the concrete
slab structure from a first slab width to a second slab width.

US Pat. No. 9,644,330

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR OPERATING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

17. A method of operating a self-propelled road milling machine, the machine including:
a machine frame;
a milling drum housing attached to the machine frame;
a milling drum arranged in the milling drum housing for milling material and creating a milled track behind the milling drum;
and

a scraper blade located behind the milling drum;
the method comprising steps of:
(a) measuring a distance between at least one reference point on the scraper blade and milled material remaining in the milled
track, the at least one reference point having a fixed relationship to a lower edge of the scraper blade; and

(b) adjusting the height of the scraper blade relative to the milling drum in response to the distance measured in step (a).

US Pat. No. 9,551,115

TRANSITION ON THE FLY

Wirtgen GmbH, (DE)

1. A slipform paving machine apparatus, comprising:
a machine frame including first and second side frame members, the machine frame being variable in frame width;
at least one first side ground engaging unit and at least one second side ground engaging unit, at least one of the ground
engaging units being steerable to control a direction of the paving machine apparatus;

front and rear first side height adjustable supports supporting the first side frame member from the at least one first side
ground engaging unit;

at least one second side height adjustable support supporting the second side frame member from the at least one second side
ground engaging unit;

a mold supported from the machine frame beneath the machine frame and laterally between the at least one first side ground
engaging unit and the at least one second side ground engaging unit, the mold being configured to mold concrete into a concrete
structure having an upper surface and lateral concrete sides as the machine moves forward in an operating direction, the mold
being variable in mold width so as to vary a paving width of the concrete structure;

at least two three-dimensional (3D) stringless reference objects configured to correspond to positions of at least two points
on the machine frame relative to an external reference system;

a width actuator configured to vary the paving width;
a width sensor configured to generate a width signal corresponding to a change in the paving width; and
a controller configured to receive input signals corresponding to the positions of the 3D stringless reference objects in
the external reference system, and to receive the width signal from the width sensor, the controller also configured to control
height adjustment of one or more of the height adjustable supports, to control steering of the at least one steerable ground
engaging unit, and to control the width actuator so that the paving width can be varied as the machine moves forward in the
operating direction.

US Pat. No. 9,422,677

SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

17. A self-propelled construction machine, comprising:
a machine frame;
an operating drum supported from the frame;
a drum housing surrounding the operating drum, the drum housing including a sealing element arranged to contact a ground surface
for closing the drum housing off to the ground surface, the sealing element including a lower edge and an impact element extending
downwards past the lower edge; and

a sensor configured to detect a position of the impact element and to thereby detect a force acting on the sealing element
when the impact element encounters an obstacle.

US Pat. No. 9,068,303

ROAD MILLING MACHINE FOR THE TREATMENT OF ROAD PAVEMENTS, AS WELL AS METHOD FOR PIVOTING A TRAVELLING DRIVE UNIT OF A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

15. A method of operating a milling machine, the milling machine including:
a machine frame;
first and second rear ground engaging units, at least the first rear ground engaging unit including a travel drive;
first and second rear lifting columns supporting the machine frame from the first and second rear ground engaging units, respectively;
a working drum connected to the machine frame and rotatable about a drum axis;
a pivot arm connected to the first rear lifting column and pivotally connected to the machine frame at a pivot axis, the pivot
arm being pivotable to move the first rear lifting column and the first rear ground engaging unit between a first outer end
position projecting laterally relative to the machine frame and a second inner end position for close-to-edge milling; and

a steering assembly configured to adjust a steering angle of the first rear ground engaging unit at least in the inner end
position; and

a controller configured to control the travel drive and the steering angle;the method comprising:
pivoting the pivot arm and the first rear ground engaging unit from one end position to the other end position by driving
the travel drive unit while the first rear ground engaging unit is in contact with the ground surface.

US Pat. No. 9,850,628

ROAD MILLING MACHINE FOR WORKING ROAD OR GROUND SURFACES

Wirtgen GmbH, (DE)

21. A road milling machine for working road or ground surfaces, comprising:
a machine frame;
left and right front wheels or crawler tracks, and left and right rear wheels or crawler tracks, supporting the machine frame;
a milling drum supported from the machine frame;
left and right height adjustable lifting columns connecting the left and right rear wheels or tracks to the machine frame;
left and right pivoting columns connecting the left and right front wheels or tracks to the machine frame, each pivoting column
having a pivot axis and a radius;

left and right steering levers connected to the left and right front wheels or tracks, respectively, so as to steer each of
the front wheels or tracks in steering angles about the pivot axes of their respective pivot columns;

a steering tie rod including a rigid connecting part, the connecting part coupling the steering levers of the front wheels
or tracks to one another for synchronous adjustment of the steering angles;

at least one steering actuator including a free end coupled to the steering tie rod to adjust the steering angles; and
wherein the front wheels or tracks are steerable between first and second end positions for a direction of travel to the right
or left, respectively, and the steering tie rod includes first and second curved sections configured such that in the first
end position the left pivoting column is received in the first curved section and in the second end position the right pivoting
column is received in the second curved section.

US Pat. No. 9,416,500

SELF-PROPELLED COLD MILLING MACHINE, AS WELL AS METHOD FOR MILLING OFF AND TRANSPORTING AWAY A MILLED-OFF STREAM OF MATERIAL

Wirtgen GmbH, (DE)

1. A milling machine for working ground surfaces, comprising:
a machine frame;
a milling drum supported from the machine frame;
at least one conveyor arranged on the machine frame to accept milled-off material from the milling drum, the at least one
conveyor including a discharge end to discharge the milled-off material in a conveying direction along a parabolic trajectory;
and

a shield including lateral shield sections, the shield including an operating position in which the shield is arranged to
shield the milled-off material leaving the at least one conveyor along at least part of the parabolic trajectory without influencing
the parabolic trajectory;

wherein the shield includes a cover, and the cover includes a curvature radius in the conveying direction at least as large
as a farthest reaching parabolic trajectory of the milled-off material at a maximum conveying speed of the at least one conveyor.

US Pat. No. 9,175,448

DRUM HOUSING FOR A WORKING DRUM OF A CONSTRUCTION MACHINE OR MINING MACHINE, CONSTRUCTION MACHINE OR MINING MACHINE, AS WELL AS METHOD FOR MONITORING THE CONDITION OF A WORKING DRUM OF A CONSTRUCTION MACHINE OR MINING MACHINE

Wirtgen GmbH, (DE)

1. A drum housing for a working drum of a construction machine or mining machine, said working drum being provided with tools
and rotating about a drum axis, with a housing shell which at least partially encloses the circumference of the working drum,
and with at least one inspection opening arranged in the housing shell for a monitoring device, wherein said monitoring device
inspects the condition of the working drum or the tools thereof,
further comprising:
a closing mechanism including a sliding plate arranged outside of the housing shell, said sliding plate being slidable between
a closed position wherein the sliding plate blocks a viewing path between the monitoring device and the at least one inspection
opening, and an open position wherein the viewing path is open such that the monitoring device can view the working drum or
the tools thereof through the at least one inspection opening.

US Pat. No. 9,896,810

METHOD FOR CONTROLLING A SELF-PROPELLED CONSTRUCTION MACHINE TO ACCOUNT FOR IDENTIFIED OBJECTS IN A WORKING DIRECTION

Wirtgen GmbH, (DE)

1. A self-propelled construction machine comprising:
a chassis comprising front and rear wheels or running gears in a working direction;
a working tool for working the terrain in a predetermined working region;
an image recorder configured to capture an image of the terrain;
a user interface comprising a display for displaying the captured image of the terrain, wherein the user interface is further
configured to receive user input for marking one or more object points in the displayed image;

a data processor configured to
identify one or more objects represented in the displayed image based on at least one marked object point associated the one
or more objects, and

determine a spatial data set containing information regarding a position of the identified one or more objects in a reference
system which is independent of the movement of the construction machine,

wherein said spatial data set is determined from captured image data based on a position and orientation of the image recorder
in the reference system; and

a controller configured to generate control signals, based on the determined spatial data set, for one or more of operations
comprising actuation of the front and rear wheels or running gears for translational movements on the terrain, actuation of
the front and rear wheels or running gears for rotational movements on the terrain, and actuation of the working tool in order
to work the terrain.

US Pat. No. 9,663,905

SWING OVER STEERING

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame;
first and second swing legs pivotally connected to the machine frame;
first and second ground engaging units steerably connected to the first and second swing legs, respectively, the ground engaging
units including drive motors configured such that the ground engaging units are driven across a ground surface by the drive
motors;

a first steering sensor configured to detect a first steering angle of the first ground engaging unit relative to the first
swing leg:

a second steering sensor configured to detect a second steering angle of the second ground engaging unit relative to the second
swing leg; and

a controller including a swing leg pivot mode, the swing leg pivot mode including:
a first sub-mode configured to allow steering of at least one of the ground engaging units in response to an input by a human
operator such that the swing leg associated with the at least one of the ground engaging units pivots relative to the machine
frame in response to steering of the at least one of the ground engaging units; and

a second sub-mode configured to automatically under direction of the controller steer the at least one ground engaging unit
back toward a final steering direction corresponding to a current direction of the machine.

US Pat. No. 9,512,718

DRUM HOUSING FOR A WORKING DRUM OF A CONSTRUCTION MACHINE OR MINING MACHINE, CONSTRUCTION MACHINE OR MINING MACHINE, AS WELL AS METHOD FOR MONITORING THE CONDITION OF A WORKING DRUM OF A CONSTRUCTION MACHINE OR MINING MACHINE

Wirtgen GmbH, (DE)

1. A construction machine or mining machine, comprising:
a working drum including a plurality of tools, the working drum rotatable about a drum axis;
a drum housing shell at least partially enclosing a circumference of the working drum, the drum housing shell including an
inspection opening; and

an outer wall located radially outward from the drum housing shell and defining a channel communicated with the inspection
opening, the channel extending downward outside of the drum housing shell, the outer wall having a wall opening defined therein.

US Pat. No. 9,089,087

RUNNER SEGMENT FOR AN EDGE GUARD OF A ROAD MILLING MACHINE, AND EDGE GUARD FOR A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A runner segment for an edge guard of a road milling machine or soil working machine, the runner segment comprising:
an elongated runner portion elongated in a running direction;
an insertion projection extending upward from the runner portion for insertion into the edge guard to connect the runner segment
to the edge guard, the insertion projection having a longitudinal center axis defining an insertion direction, the insertion
projection further including;

opposite lateral side surfaces extending in the running direction; and
at least one recess defined in the insertion projection and communicated with at least one of the opposite lateral side surfaces;
and

at least one clamp element received in the at least one recess, each clamp element including one or more lateral protrusions
extending laterally outward from its respective recess past its respective lateral side surface, for resiliently engaging
the edge guard to clamp the runner segment within the edge guard.

US Pat. No. 9,873,993

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR STEERING AN AUTOMOTIVE MILLING MACHINE

Wirtgen GmbH, (DE)

1. An automotive milling machine, comprising:
a machine frame with a longitudinal axis;
a plurality of ground engaging units configured to support the machine frame from a ground surface, at least one of the ground
engaging units being steerable in a steering angle;

working drum connected to the machine frame;
a transport conveyor slewable sideways in a slewing angle relative to the machine frame about an essentially vertical first
axis;

at least one detector configured to detect at least one parameter, the at least one parameter including the steering angle;
and

a controller connected to the at least one detector to receive the at least one parameter, and configured to continuously
control the slewing angle of the transport conveyor via associated piston-cylinder units and in accordance with the at least
one parameter;

wherein the controller is configured to continuously control the slewing angle of the transport conveyor such that the slewable
transport conveyor assumes a slewing angle in each steering angle during forward travel which essentially corresponds to a
slewing angle of a longitudinal axis of a slewable fictitious single-axle trailer articulated at the first axis when in forward
travel.

US Pat. No. 9,631,329

FRAME DISTORTION CONTROL

Wirtgen GmbH, (DE)

1. A construction machine apparatus, comprising:
a machine frame:
at least two self-propelling ground engaging units;
a plurality of height adjustable supports, at least three of the height adjustable supports being arranged to support the
machine frame from the ground engaging units;

a laser plane source mounted on the machine frame at a first location and arranged to generate a laser plane;
first and second laser sensors mounted on the construction machine at at least two other locations and arranged to intersect
the laser plane to detect a height of the at least two other locations relative to the laser plane; and

a controller configured to receive input signals from the first and second laser sensors and to control height adjustment
of at least one of the at least two other locations.

US Pat. No. 9,581,441

METHOD AND DEVICE FOR DETERMINING AN AREA CUT WITH A CUTTING ROLL BY AT LEAST ONE CONSTRUCTION MACHINE OR MINING MACHINE

WIRTGEN GMBH, (DE)

1. A method of determining a total usage of at least one construction machine including a milling drum, the milling drum having
a milling width, the method comprising:
(a) milling a ground surface in a plurality of milling trajectories with the at least one construction machine, each milling
trajectory being defined by travel of the construction machine across the ground surface;

(b) determining a length of each of the milling trajectories by determining a plurality of machine positions along each trajectory;
(c) determining a partial usage corresponding to each trajectory as a function of the length of each trajectory and the milling
width of each trajectory, the partial usage being a milled area or a milled volume corresponding to each trajectory; and

(d) determining the total usage by adding the partial usages for the plurality of milling trajectories and subtracting any
overlapping usage where one trajectory overlaps another trajectory.

US Pat. No. 9,523,176

ROAD MILLING MACHINE AND METHOD FOR MEASURING THE MILLING DEPTH

Wirtgen GmbH, (DE)

1. A self-propelling road milling machine, comprising:
a machine frame;
at least two front ground engaging supports, and at least one rear ground engaging support;
front and rear lifting columns supporting the frame from the ground engaging supports;
a plurality of position sensors, each of the lifting columns including one of the position sensors so that each position sensor
directly detects a lifted condition of its associated lifting column;

a milling roller supported from the frame for treatment of a ground surface;
first and second height adjustable side plates arranged on opposite sides of the milling roller;
a height adjustable stripping plate arranged behind the milling roller and operable to be lowered, during operation, into
a milling track generated by the milling roller; and

a controller operably associated with the position sensors and configured to automatically control the lifted condition of
at least one of the lifting columns to establish a predetermined inclination front to rear of the machine frame.

US Pat. No. 10,046,479

TOOL HOLDER AND COMBINATION OF A TOOL HOLDER AND TOOL

Wirtgen GmbH, (DE)

12. A method of assembling a chisel in a chisel holder, the method comprising:placing a nut in a holder receiver of the chisel holder such that the nut is rotationally secured in a first position;
retaining the nut in the chisel holder with a seal before the chisel is screwed into the nut;
placing the chisel into a chisel receiver of the chisel holder; and
screwing the chisel into the nut until a support face of the chisel is tensioned on a counter-face of the chisel holder.

US Pat. No. 9,873,991

FRAME DISTORTION CONTROL

Wirtgen GmbH, (DE)

1. A method of operating a construction machine, the method comprising:
(a) generating a laser reference plane with a laser source supported from a machine frame of the construction machine, such
that the laser reference plane is fixed relative to at least one location on the machine frame;

(b) detecting a height relative to the laser reference plane of at least two other locations on the construction machine by
monitoring signals from at least two laser sensors mounted on the construction machine at the at least two other locations,
the at least two laser sensors intersecting the laser plane; and

(c) adjusting the height relative to the laser reference plane of at least one of the at least two other locations in response
to the heights detected in step (b).

US Pat. No. 9,598,825

DEVICE, AS WELL AS METHOD FOR WORKING GROUND SURFACES OR ROADWAYS

Wirtgen GmbH, (DE)

1. An apparatus for working ground surfaces or roadways, comprising:
a machine frame;
a drum housing supported from the machine frame;
a working drum located in the drum housing;
at least one spraying system including at least first and second outlet nozzle assemblies arranged next to one another and
directed toward the working drum for spraying agents, each of the first and second outlet nozzle assemblies including:

an outlet nozzle including a nozzle channel having a channel outlet;
a drivable closing mechanism including a closing element movable on a specified path between an open position, and a closed
position, each closing element including a first section facing the channel outlet and a second section on an opposite side
of the first section from the channel outlet, the first section having a smaller cross-sectional area than the second section,
the second section being sized to close the nozzle channel; and

the outlet nozzle and the closing element being configured such that a discontinuous variation in flow cross-section between
the nozzle channel and the closing element is provided in accordance with a position of the closing element on the specified
path; and

a controller operably associated with the drivable closing mechanisms and configured to position at least one of the closing
elements in at least one intermediate position between the open and closed positions of the at least one closing element.

US Pat. No. 9,840,815

TEXTURE CURING MACHINE AS WELL AS METHOD FOR THE SUBSEQUENT TREATMENT OF A FRESHLY PRODUCED CONCRETE LAYER

Wirtgen GmbH, (DE)

1. A method for the subsequent treatment of a freshly produced concrete layer with a self-propelled texturing machine, the
texturing machine having an adjustable travelling speed in a working direction, the texturing machine including a texturing
device, the texturing device including texturing tools configured to move at a traversing speed transverse to the working
direction and to act on the concrete layer, the method comprising:
(a) specifying a specified texturing angle;
(b) detecting at least one of the travelling speed and the traversing speed; and
(c) controlling at least one of the travelling speed and the traversing speed relative to the other of the travelling speed
and the traversing speed such that the texturing tools move at the specified texturing angle relative to the concrete layer.

US Pat. No. 9,803,325

EJECTOR UNIT FOR A ROAD MILLING MACHINE OR THE LIKE

Wirtgen GmbH, (DE)

1. A milling drum for a road milling machine, the milling drum comprising:
a cylindrical milling tube rotatable about a rotational axis, the rotational axis defining an axial direction parallel to
the rotational axis;

a plurality of cutting bits mounted on the milling tube; and
at least one ejector assembly mounted on the milling tube, the ejector assembly including:
a carrier mounted on the milling tube, the carrier including first and second carrier mounting holes defined through the carrier,
the carrier mounting holes being spaced apart in the axial direction;

an ejector body having a length and a width, the length being greater than the width, the body having a front conveying side
and a rear mounting side, the front conveying side having a recess defined therein, the ejector body including two body mounting
holes defined through the ejector body from the front conveying side to the rear mounting side, the body mounting holes being
spaced apart in the axial direction, and the body mounting holes being aligned with the carrier mounting holes and the ejector
body being configured so that the ejector body can be reversibly mounted on the carrier in either of two mounting positions
rotated 180° from each other about an ejector body rotational axis extending through the front conveying side and the rear
mounting side; and

first and second fasteners extending through the aligned carrier mounting holes and body mounting holes to mount the ejector
body on the carrier.

US Pat. No. 9,416,502

SELF-PROPELLED ROAD MILLING MACHINE FOR MILLING ROAD SURFACES, IN PARTICULAR LARGE-SCALE MILLING MACHINE, AND METHOD FOR MILLING ROAD SURFACES

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine for milling road surfaces, comprising:
front and rear ground engaging supports, as seen in a direction of travel;
a machine frame;
front and rear height adjustable lifting columns supporting the machine frame from the front and rear ground engaging supports,
respectively;

a milling roller housing arranged at said machine frame between said front and rear ground engaging supports;
a single milling roller rotatably supported in said milling roller housing;
a hydraulic or electric milling roller drive unit integrated in said milling roller;
a conveyor belt cooperating with said milling roller housing to remove milling product milled off by said milling roller in
a forward direction as seen in the direction of travel; and

two linear guides fixed to said machine frame and located below said machine frame between said front and rear ground engaging
supports, the two linear guides being spaced from each other in said direction of travel, said milling roller housing and
said milling roller being supported on said two linear guides between said front and rear ground engaging supports such that
a weight force of said milling machine can be transmitted to said milling roller via said milling roller housing by height
adjustment of each of said front and said rear lifting columns;

wherein a lateral end of said milling roller housing is nearly flush with a lateral outer side of said machine frame, to define
a zero side, to allow milling to be performed as near to edges or obstacles as possible; and

wherein said milling roller, together with said milling roller housing and said milling roller drive unit, is supported so
as to be displaceable along the two linear guides transversely to the direction of travel while maintaining movement of the
milling machine in the direction of travel during milling operation, whereby said zero side can optionally be defined on the
one outer side or on an opposite outer side of said machine frame.

US Pat. No. 10,100,471

AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A front loading road milling machine, comprising:a machine frame having a frame front end and a frame rear end with reference to a direction of travel, the machine frame including essentially vertically arranged lateral outer walls, the machine frame having a frame width defined between the outer walls;
a pair of front crawler track units and a pair of rear crawler track units for supporting the machine frame from a ground surface;
a milling drum supported from the machine frame between the front and rear crawler track units for working the ground surface, the milling drum extending transversely to the direction of travel of the machine frame and having a drum end in close proximity to one of the lateral outer walls to define a zero side of the milling machine so that milling close to obstacles is possible on the zero side of the milling machine;
a belt drive connected to the milling drum and arranged on the other lateral outer wall of the machine frame opposite from the zero side;
a first transport conveyor arranged in front of the milling drum for receiving milled material from the milling drum;
a second transport conveyor extending forward from the frame front end for receiving the milled material from the first transport conveyor and conveying milled material forward onto a transport vehicle located forward of the road milling machine, the second transport conveyor having a second transport conveyor front discharge end and a second transport conveyor rear end, the second transport conveyor rear end being pivotally connected to the frame front end so that the second transport conveyor is pivotal about both a horizontal axis and a vertical axis relative to the frame, the second transport conveyor including a structural framework, the second transport conveyor extending forward of the machine frame by a distance substantially greater than the frame width;
a plurality of lifting columns connected between the machine frame and the crawler track units for adjusting a milling depth of the milling drum by adjusting a height of the machine frame above the ground surface;
an operator's platform located on the machine frame;
a video camera supported from the structural framework of the second transport conveyor nearer to the second transport conveyor front discharge end than to the second transport conveyor rear end, the video camera facing forward and downward to monitor the discharge of material from the second transport conveyor onto the transport vehicle located forward of the road milling machine and
the operator's platform further including a seat having a seat surface adjustable in height such that an eye level of the operator when sitting essentially corresponds to an eye level of the operator when standing within the operator's platform.

US Pat. No. 9,969,427

TRANSPORT CONVERSION MODE

Wirtgen GmbH, (DE)

1. A method of preparing a paving machine for transport, the paving machine including:a frame including a rear and a front, the frame defining a paving direction extending from the rear to the front, and the frame defining a transport direction perpendicular to the paving direction;
a plurality of swing legs pivotally connected to the frame; and
a plurality of ground engaging units, one ground engaging unit being steerably connected to each one of the swing legs, each of the ground engaging units including a drive such that the ground engaging unit may be driven across the ground;
the method comprising the steps of:
(a) spinning the frame in place on the ground through a re-orientation angle;
(b) after step (a), rotating each of the ground engaging units relative to its respective swing leg until each ground engaging unit is oriented primarily in the transport direction; and
(c) while moving the paving machine in the transport direction, pivoting each of the swing legs relative to the frame until each swing leg is oriented primarily in the transport direction.

US Pat. No. 9,689,120

METHOD FOR OPTIMIZING A CUTTING PROCESS IN ROAD MILLING MACHINES, AS WELL AS MILLING MACHINE FOR MACHINING ROAD COVERINGS

Wirtgen GmbH, (DE)

1. A milling machine for machining road coverings, comprising:
a machine frame;
one or more front ground engaging traveling mechanisms supporting the machine frame;
one or more rear ground engaging traveling mechanisms supporting the machine frame, at least one of the front or rear ground
engaging traveling mechanisms including a hydraulic drive;

a milling device fitted with milling tools and including a milling device drive;
an on board cooling liquid storage tank supported by the machine frame;
a spray system arranged to spray the cooling liquid from the tank onto the milling tools;
an internal combustion drive motor powering the traveling mechanisms and the milling device, the drive motor including an
electronic motor control configured to detect a characteristic of the drive motor related to an instantaneous power output
of the milling device; and

a controller operably associated with the electronic motor control and the spray system, the controller configured to control
a flow rate of cooling liquid to the spray system in dependence at least in part upon the characteristic of the drive motor
detected by the electronic motor control.

US Pat. No. 9,598,080

SELF-PROPELLED CIVIL ENGINEERING MACHINE AND METHOD OF CONTROLLING A CIVIL ENGINEERING MACHINE

Wirtgen GmbH, (DE)

1. A method of controlling a drive unit of a self-propelled civil engineering machine to enable the civil engineering machine
to perform translatory and/or rotational movements on the ground, the method comprising:
determining a deviation of at least one reference point on the civil engineering machine from a desired distance or path of
travel which is defined by at least one straight line and/or curve;

controlling the drive unit being controlled depending on the deviation of the at least one reference point on the civil engineering
machine from the desired distance or path of travel in such a way that the reference point on the civil engineering machine
moves along the desired distance or path of travel or along the desired distance or path of travel at a preset spacing therefrom,
and

changing a position of the at least one reference point relative to the civil engineering machine continuously depending on
the position of the at least one reference point relative to the desired distance or path of travel.

US Pat. No. 10,094,079

POSITIONING ARRANGEMENT FOR FITTING AN INTERCHANGEABLE MILLING ASSEMBLY OF A ROAD-BUILDING MACHINE

Wirtgen GmbH, (DE)

1. A method of fitting a milling assembly below a machine chassis of a road building machine, the machine chassis carried on wheels or track-laying units, using a positioning arrangement, the method comprising:(a) driving the positioning arrangement, with the milling assembly resting on the positioning arrangement and when in a lowered position, under the machine chassis of the road building machine such that a longitudinal direction of a handling chassis of the positioning arrangement extends transversely to a longitudinal direction of the road building machine;
(b) raising the positioning arrangement from the lowered position to a raised position;
(c) fitting the milling assembly to the road building machine; and
(d) lowering the positioning arrangement from the raised position and driving the positioning arrangement away without the milling assembly resting on the positioning arrangement.

US Pat. No. 10,066,347

DEVICE, AS WELL AS METHOD FOR WORKING GROUND SURFACES OR ROADWAYS

Wirtgen GmbH, (DE)

1. An apparatus for working ground surfaces or roadways, comprising:a machine frame;
a drum housing supported from the machine frame;
a working drum located in the drum housing;
at least one spraying system including at least first and second outlet assemblies arranged next to one another and directed toward the working drum for spraying agents, each of the first and second outlet assemblies including:
a channel having a channel outlet;
a drivable closing mechanism including a closing element movable on a specified path between an open position, and a closed position, each closing element including a first section facing the channel outlet and a second section on an opposite side of the first section from the channel outlet, the first section having a smaller cross-sectional area than the second section, the second section being sized to close the channel; and
the channel and the closing element being configured such that a discontinuous variation in flow cross-section between the channel and the closing element is provided in accordance with a position of the closing element on the specified path; and
a controller operably associated with the drivable closing mechanisms and configured to position at least one of the closing elements in at least one intermediate position between the open and closed positions of the at least one closing element.

US Pat. No. 9,915,043

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR UNLOADING MILLED MATERIAL

Wirtgen GmbH, (DE)

10. A method of discharging removed milled material from an automotive milling machine onto a point of impingement on a loading
surface of a transport vehicle, the method comprising:
(a) removing the milled material from a ground surface with a working drum of the milling machine;
(b) discharging the milled material at a conveying speed from a transport conveyor arranged in front of or behind the working
drum relative to a direction of travel of the milling machine, the transport conveyor being slewable sideways in a slewing
angle and adjustable in discharge height in an elevation angle;

(c) detecting with a detection and control system an alterable position of the loading surface of the transport vehicle relative
to the transport conveyor; and

(d) automatically controlling with the detection and control system the point of impingement of the milled material by controlling
at least the conveying speed such that the milled material is discharged onto a specified point of impingement within the
loading surface, independent of movements of the milling machine and the transport vehicle.

US Pat. No. 9,745,705

RUNNER SEGMENT FOR AN EDGE GUARD OF A ROAD MILLING MACHINE, AND EDGE GUARD FOR A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. An edge guard for a road milling machine or a soil working machine, the edge guard comprising:
a base part formed from metal plate having opposite parallel lateral plate surfaces, the metal plate having a plate width
defined between the lateral plate surfaces, the metal plate having a lower edge portion having a plurality of insertion receptacles
defined in the lower edge portion within the plate width, the insertion receptacles being open toward an underside of the
edge guard and configured to receive runner segments in the insertion receptacles.

US Pat. No. 9,764,910

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR DISCHARGING MILLED MATERIAL

Wirtgen GmbH, (DE)

1. An automotive milling machine comprising:
a machine frame;
a working drum supported from the machine frame for milling off milled material;
a transport conveyor arranged to receive the milled material milled off by the working drum and to discharge the milled material
onto a loading surface of a transport vehicle, the transport conveyor being slewable relative to the machine frame;

an image recording system arranged to monitor an alterable position of the loading surface of the transport vehicle, via at
least one sensor configured to generate at least one digital image of the loading surface; and

a controller configured to detect an error in the at least one digital image.

US Pat. No. 10,655,285

SELF-PROPELLED GROUND MILLING MACHINE AND METHOD FOR WORKING ON A TRAFFIC SURFACE

Wirtgen GmbH, (DE)

1. A method for working a traffic surface using a self-propelled ground milling machine, wherein the machine comprises a working roller arranged in a roller housing, a hold-down device which is height-adjustable with respect to the traffic surface being arranged upstream of the working roller in a working direction, a control unit, and one or more sensors, the method comprising:detecting, via the one or more sensors, one or more of impacts and oscillations which occur as a result of fragments broken off from the traffic surface;
detecting a disruption to the operating process based on at least one of:
a) a magnitude of an amplitude of the one or more of impacts and oscillations is greater than a predetermined threshold;
b) a frequency of at least one of the detected impacts and/or oscillations falls within a particular frequency range; and
upon detecting the disruption to the operating process, generating a control signal to the control unit.

US Pat. No. 9,782,889

WEAR PROTECTION CAP

Wirtgen GmbH, (DE)

11. A wear protection cap for covering surface regions of a bit holder of a bit holder arrangement, the wear protection cap
comprising:
at least two panel segments located at an angle to one another for covering surface regions of the bit holder arrangement,
the panel segments being integrally joined to one another as a primary-formed metal part or as a reshaped metal part, the
at least two panel segments including:

a front panel segment having an aperture defined therein, the aperture configured to receive a head of a shank bit;
a top panel segment adjacent to a rear side of the front panel segment, the top panel segment including a convex discharge
surface; and

two side panel segments, the side panel segments being spaced apart from one another and being joined integrally to the top
panel segment and to a rear side of the front panel segment, the convex discharge surface of the top panel segment extending
from one side panel segment to the other side panel segment.

US Pat. No. 10,113,275

SELF-PROPELLED GROUND MILLING MACHINE AND METHOD FOR WORKING ON A TRAFFIC SURFACE

Wirtgen GmbH, (DE)

1. A method for working a traffic surface using a self-propelled ground milling machine, wherein the machine comprises a working roller arranged in a roller housing, a hold-down device which is height-adjustable with respect to the traffic surface being arranged upstream of the working roller in a working direction, and one or more sensors, the method comprising:detecting, via the one or more sensors, a physical variable characteristic of disruption to an operating process, wherein a compressive force is applied counter to a force exerted by a weight of the hold-down device by fragments broken off from the traffic surface; and
upon detecting the disruption to the operating process, automatically applying a contact pressure to the hold-down device, said contact pressure directed counter to the compressive force applied by the fragments.

US Pat. No. 10,024,005

SELF-PROPELLED ROAD MILLING MACHINE FOR WORKING ROAD SURFACES, AS WELL AS METHOD FOR WORKING ROAD SURFACES WITH A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine for working road surfaces, comprising:a machine frame;
a milling drum supported from the machine frame to be rotatable about an axis of the milling drum, the axis extending transverse to a direction of travel of the road milling machine, the milling drum including a plurality of working tools arranged around a circumference of the milling drum, the tools being spaced from each other by a line spacing parallel to the axis;
a milling drum housing enclosing the milling drum; and
an oscillation drive configured to oscillate the milling drum to-and-fro by an oscillation stroke parallel to the axis and relative to the machine frame during milling operation, such that a rotating movement of the tools due to rotation of the milling drum is superimposable with an axial movement of the tools parallel to the axis of the milling drum due to the oscillation of the milling drum.

US Pat. No. 9,765,620

CHISEL HOLDER

Wirtgen GmbH, (DE)

1. A tool system for an earth working machine, comprising:
a base part including an insertion receptacle defining a longitudinal insertion axis and including a threaded compression
screw receptacle intersecting the insertion receptacle; and

a tool apparatus including:
a support member having an insertion projection side and a working side, the working side facing away from the insertion projection
side;

an insertion projection extending from the insertion projection side and received in the insertion receptacle of the base
part, the insertion projection including at least two convex abutment surfaces circumferentially separated from one another
and arranged forward of the longitudinal insertion axis with reference to a tool advance direction; and

at least one pressure surface arranged rearward of the longitudinal insertion axis with reference to the tool advance direction
and aligned with the threaded compression screw receptacle; and

a compression screw received in the threaded compression screw receptacle and engaging the at least one pressure surface to
force the abutment surfaces of the insertion projection into engagement with the insertion receptacle;

wherein the insertion receptacle of the base part and the insertion projection are configured such that the insertion projection
is inserted into the insertion receptacle in a direction substantially parallel to the longitudinal insertion axis.

US Pat. No. 9,719,348

CHISEL HOLDER

Wirtgen GmbH, (DE)

1. A tool system for an earth working machine, comprising:
a base part including an insertion receptacle, two first support surfaces at a non-parallel angle to one another, and two
second support surfaces at a non-parallel angle to one another and to the first support surfaces; and

a tool apparatus including:
an insertion projection received in the insertion receptacle of the base part; and
a support member integrally formed with the insertion projection and having an insertion projection side and a working side,
the insertion projection extending from the insertion projection side, the working side facing away from the insertion projection,
the support member including:

two first bearing surfaces at a first angle to one another, the two first bearing surfaces diverging from the insertion projection
side toward the working side, each of the first bearing surfaces engaging a respective one of the first support surfaces;
and

two second bearing surfaces at a second angle to one another, the two second bearing surfaces diverging from the insertion
projection side toward the working side, each of the second bearing surfaces engaging a respective one of the second support
surfaces.

US Pat. No. 9,702,096

AUTOMOTIVE CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING AN AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. An automotive construction machine, comprising:
a machine frame having a working direction;
at least one front running gear and at least one rear running gear configured to support the machine frame from a ground surface;
a rearward device supported from the machine frame rearward of the front running gear;
front and rear lifting systems connected between the machine frame and the front and rear running gears, respectively, for
adjusting a height and orientation of the machine frame relative to the ground surface; and

a control unit operably associated with the lifting systems, the control unit being configured such that:
the front lifting system is controlled such that the machine frame remains in a predetermined orientation with respect to
the ground surface in the working direction as the construction machine advances; and

unevenness of the ground surface is compensated for in regard to a height of the rearward device relative to the ground surface
with a time delay in response to control of the front lifting system.

US Pat. No. 9,684,308

TRANSPORT MODE CONVERSION

Wirtgen GmbH, (DE)

1. A construction machine, comprising:
a machine frame;
first, second, third, and fourth swing legs pivotally connected to the machine frame;
first, second, third, and fourth ground engaging units steerably connected to the first, second, third, and fourth swing legs,
respectively, the ground engaging units including drive motors configured such that the ground engaging units are driven across
a ground surface by the drive motors;

first, second, third, and fourth steering sensors configured to detect steering angles of the first, second, third, and fourth
ground engaging units relative to the first, second, third, and fourth swing legs, respectively;

first, second, third, and fourth pivot sensors configured to detect pivot angles of the first, second, third, and fourth swing
legs, respectively, relative to the machine frame;

first, second, third, and fourth locks configured to selectively lock and unlock the first, second, third, and fourth swing
legs, respectively, in pivotal position relative to the machine frame; and

a controller including a transport re-orientation mode configured to rotate the machine frame substantially in place on the
ground through a re-orientation angle, and as the machine frame is rotating to pivot the swing legs from an operating orientation
to a transport orientation relative to the machine frame.

US Pat. No. 9,512,576

AUXILIARY DRIVE

Wirtgen GmbH, (DE)

1. A construction machine for the treatment of ground surfaces, comprising:
a machine frame;
a drive motor;
a work drum supported from the machine frame and including exchangeable tools fastened to the work drum;
a belt drive including:
a motor-side pulley connected to the drive motor;
a drum-side pulley connected to the work drum;
at least one drive belt connecting the motor-side pulley to the drum-side pulley; and
a drive coupling connecting the motor-side pulley to the drive motor, the drive coupling being configured to decouple the
motor-side pulley from the drive motor; and

an auxiliary drive configured to be engaged with the drive coupling so that the auxiliary drive can rotate the work drum in
a raised condition of the work drum.

US Pat. No. 9,457,653

SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled construction machine, comprising:
a machine frame;
a working unit arranged on the machine frame and configured to carry out work for a building operation;
a drive unit arranged on the machine frame and configured to drive the working unit, the drive unit including at least one
internal combustion engine and an exhaust gas treatment system;

a first tank formed as an integral component of the machine frame, the first tank being either a fuel tank configured to hold
fuel for the at least one internal combustion engine or a water tank;

an operating material tank received in the first tank, the operating material tank being configured to hold liquid operating
material; and

wherein the operating material tank is configured to hold a liquid urea solution additive for the exhaust gas treatment system,
the liquid urea solution additive being the liquid operating material.

US Pat. No. 9,399,914

TOOL HOLDER

Wirtgen GmbH, (CZ)

1. A bit holder for a road milling machine or the like, comprising:
a base part including an insertion projection and a second projection, the second projection having an inner receptacle; and
an insert received in the inner receptacle, the insert being made of a harder material than the base part, the insert having
a bit receptacle defined therein, the bit receptacle including a stepped bore having a first diameter region and a second
diameter region, the first diameter region having a larger inside diameter than the second diameter region;

wherein the insert has a longitudinal center axis, and the insert includes an axially outer abutting surface extending radially
with respect to the longitudinal center axis, the axially outer abutting surface extending annularly around an entrance opening
of the first diameter region;

wherein the second projection includes an annular axially outer surface surrounding the inner receptacle of the second projection,
and the second projection defines a stop at an axially inner end of the inner receptacle; and

wherein the insert includes an axially inner abutment surface received against the stop of the inner receptacle, such that
the axially outer abutting surface of the insert is adjacent to and substantially flush with the annular axially outer surface
of the second projection.

US Pat. No. 10,508,541

MILLING MACHINE AND METHOD FOR OPERATING A MILLING MACHINE

Wirtgen GmbH, (DE)

19. A method of operating a milling machine operated with different machine parameter settings and with different milling drums depending on the milling task to be carried out, the method comprising:detecting at least one characteristic feature of an installed milling drum;
ascertaining one or more of a value to be set and a setting range for at least one machine parameter, based on the at least one characteristic feature of the milling drum; and
controlling operation of the milling machine based at least in part on the at least one machine parameter,
wherein the at least one machine parameter are selected from a group comprising one or more of: a milling depth; a milling drum rotation speed; an advance speed; a drive power transferred to the milling drum; a torque transferred to the milling drum; and a rotation speed of a motor driving the milling drum.

US Pat. No. 10,086,761

AUTOMOTIVE CONSTRUCTION MACHINE AND METHOD FOR DISPLAYING THE SURROUNDINGS OF AN AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. An automotive construction machine, comprising:a machine frame having a working direction;
front and rear running gears supporting the machine frame;
a working tool arranged on the machine frame and substantially between the front and rear running gears for removing ground material;
a transport conveyor extending forward or rearward beyond the machine frame to convey removed ground material;
a camera system configured to record image details of overlapping individual image regions of surroundings of the construction machine, the camera system including:
at least one camera arranged on the transport conveyor such that a viewing direction of the camera is directed substantially toward the machine frame; and
at least one additional camera arranged on the machine frame such that a viewing direction of the additional camera is directed substantially away from the machine frame;
an image processing system configured such that the image details of the overlapping individual image regions are joined together to form a total image from a bird's eye view; and
a display unit configured to display the total image.

US Pat. No. 9,879,392

GROUND WORKING MACHINE, AS WELL AS METHOD FOR MILLING GROUND SURFACES OR TRAFFIC SURFACES

Wirtgen GmbH, (DE)

1. A ground working machine, comprising:
a machine frame having a working direction;
a plurality of wheels or tracks for supporting the machine frame from a ground surface;
a working drum supported from the machine frame to rotate about a rotational axis transverse to the working direction of the
machine frame, the working drum configured to rotate in an opposite direction to a direction of rotation of the wheels or
tracks during forward milling operation in the working direction, the working drum being height adjustable to adjust a milling
depth;

a drum housing enclosing the working drum and forming a mixing chamber, the drum housing including a front drum flap with
reference to the working direction, the drum flap including:

at least one upper flap part and at least one lower flap part, both the upper and lower flap parts closing the drum housing
from the front;

wherein at least one of the upper and lower flap parts is pivotable so as to have an adjustable pivoting angle; and
wherein at least one of the upper and lower flap parts has an adjustable telescoping position; and
a controller configured to control the adjustment of at least one of the pivoting angle and the telescoping position automatically
at least in response to a current milling depth during forward milling operation in the working direction, via associated
piston-cylinder units.

US Pat. No. 9,803,478

SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

12. A method of operating a self-propelled construction machine, the construction machine including a machine frame, front
and rear running gears for supporting the machine frame from a ground surface, a working roller arranged on the machine frame
for working the ground surface, a plurality of lifting columns, each lifting column being associated with one of the running
gears and configured to be retracted or extended for raising or lowering the associated running gear with respect to the machine
frame so that the machine frame is lowered or raised with respect to the ground surface, and a control unit operably associated
with the lifting columns and configured to actuate the lifting columns, the method comprising steps of:
in a first mode of operation working the ground surface with the machine frame in a lowered position with respect to the ground
surface and with the working roller engaged with the ground surface; and

in a second mode of operation raising the machine frame to a raised position with respect to the ground surface wherein the
working roller is not engaged with the ground surface, and in the second mode of operation:

detecting tilting of the machine frame transversely to a working direction;
detecting tilting of the machine frame longitudinally to the working direction;
detecting a lifting position of each of the lifting columns; and
actuating the lifting columns associated with the running gears by operation of the control unit such that the machine frame
is substantially horizontally levelled in response to both the detected tilting of the machine frame at least transversely
to the working direction and the detected lifting positions of the lifting columns.

US Pat. No. 9,739,145

CHISEL HOLDER FOR A SOIL TREATMENT MACHINE

Wirtgen GmbH, (DE)

14. A tool apparatus for an earth working machine, comprising:
an insertion projection; and
a support member having an insertion projection side and a working side, the insertion projection extending from the insertion
projection side, the working side facing away from the insertion projection, the support member including a bearing surface
system defined on the insertion projection side, the bearing surface system including at least three non-parallel bearing
surfaces;

wherein the insertion projection extends from the insertion projection side in an insertion direction; and
wherein the at least three non-parallel bearing surfaces include;
a pair of rear bearing surfaces at a non-parallel angle to one another, the rear bearing surfaces being at least partially
located behind the insertion projection with reference to a tool advance direction; and

at least one front bearing surface at a non-parallel angle to each of the rear bearing surfaces, the at least one front bearing
surface being at least partially located in front of the insertion projection with reference to the tool advance direction.

US Pat. No. 9,689,119

FRAME WIDTH ADJUSTMENT BY STEERING

Wirtgen GmbH, (DE)

1. A method of operating a self-propelled construction machine, the machine including a machine frame, the machine frame being
laterally extendible to adjust a frame width of the machine frame, at least one left side ground engaging unit steerably connected
to the machine frame, at least one right side ground engaging unit steerably connected to the machine frame, each of the ground
engaging units including a drive motor, and a linear actuator configured to laterally extend and retract the machine frame
to adjust the frame width, the method comprising:
(a) providing powered adjustment of the frame width with the linear actuator as the construction machine moves across the
ground surface; and

(b) during step (a), steering at least one of the left and right ground engaging units to provide a lateral force to aid in
the adjustment of the frame width.

US Pat. No. 9,624,628

AUXILIARY DRIVE

Wirtgen GmbH, (DE)

1. A construction machine for the treatment of ground surfaces, comprising:
a machine frame;
a work drum supported from the machine frame and including exchangeable tools fastened to the work drum;
a drive line including a work motor and a transmission connecting the work motor to the work drum, the transmission including:
a belt drive including a motor-side pulley, a drum-side pulley, and at least one drive belt connecting the motor-side pulley
to the drum-side pulley; and

a reduction gear arranged internally of the work drum and connected to the drum-side pulley; and
an auxiliary drive mounted at a location on the construction machine and including an auxiliary drive motor, the auxiliary
drive having a first configuration in which the auxiliary drive motor is coupled to the work drum via at least a portion of
the transmission to rotate the work drum, the auxiliary drive having a second configuration in which the auxiliary drive remains
mounted at the location on the construction machine and the work drum can be rotated by the work motor.

US Pat. No. 9,970,164

MILLING MACHINE WITH LOCATION INDICATOR SYSTEM

Wirtgen GmbH, (DE)

1. A construction machine apparatus, comprising:a plurality of ground engaging supports;
a machine frame supported from the ground engaging supports;
a milling drum supported from the machine frame; and
a controller configured to provide a control signal, corresponding to a proximity of a determined drum location of the milling drum in an external reference system with respect to a predetermined location of an area to be avoided,
wherein the control signal is operable to automatically avoid contact of the milling drum with the area to be avoided.

US Pat. No. 9,656,530

AUTOMOTIVE CONSTRUCTION MACHINE, AS WELL AS LIFTING COLUMN FOR A CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A road construction machine, comprising:
a machine frame;
a working drum supported from the machine frame for working a ground surface or traffic surface;
a plurality of ground engaging supports for supporting the construction machine on the ground surface or traffic surface;
a plurality of lifting columns, each one of the lifting columns being connected between the machine frame and one of the ground
engaging supports, each one of the lifting columns including two telescoping hollow column members and at least one piston
cylinder unit located within the telescoping hollow column members for adjusting a height of the lifting column so that each
one of the lifting columns is adjustable in height relative to the machine frame, each lifting column having a lifting position
corresponding to a position of one of the two telescoping hollow column members relative to the other of the two telescoping
hollow column members; and

a plurality of lifting position sensors, each lifting position sensor being coupled with elements of one of the lifting columns,
which elements are capable of being displaced relative to one another in accordance with the lifting position of the lifting
column in such a manner that a signal including information on a current lifting position of the lifting column is produced
by the lifting position sensor, wherein each of the lifting position sensors is connected to the at least one piston cylinder
unit located within its associated lifting column.

US Pat. No. 9,797,246

CHISEL HOLDER

Wirtgen GmbH, (DE)

20. A wear protection element for a bit holder for an earthworking machine, comprising:
a carrier including an underside, an upper side, a front side, a rear side, and first and second lateral sides;
the underside including a concave placement surface having a concave curvature in lateral cross-section;
the upper side including a recess defined in part by forward and rearward supporting surfaces; and
a hard-material element, harder than the carrier, received in the recess and supported by the forward and rearward supporting
surfaces.

US Pat. No. 9,915,041

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

9. A method for controlling a self-propelled construction machine having a working tool for working the ground in a specified
working region, the method comprising:
recording images of a portion of the ground which lies in front of the specified working region and in a working direction;
generating predictive object signals representing the position of objects in the recorded images;
obtaining current object signals relating to the working region from the predictive object signals, said current object signals
representing a time-delayed position of the objects in a portion of the ground relating to the working region; and

displaying the recorded images of the portion of the ground on a display after the time delay.

US Pat. No. 10,100,470

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR DISCHARGING MILLED MATERIAL

Wirtgen GmbH, (DE)

17. A method of discharging worked-off milled material of an automotive milling machine onto a loading surface of a transport vehicle, the method comprising:(a) working off milled material with a working drum of the milling machine;
(b) transporting the milled material from the working drum with a transport conveyor and discharging the milled material from the transport conveyor onto the loading surface of the transport vehicle, the transport conveyor being pivotable sideways relative to a machine frame of the milling machine to adjust a slewing angle of the transport conveyor, and the transport conveyor having an adjustable elevation angle to adjust a discharge height of the transport conveyor, wherein control of the discharging of the milled material is based at least in part on information from a first detector corresponding to a detected position of one or more of the loading surface and the transport conveyor;
(c) generating an activation signal in an event of the transport conveyor approaching an object, the activation signal being generated upon contact with the object by a second detector located on a bottom side of the transport conveyor; and
(d) in the presence of an activation signal from step (c), generating one or more of a control signal and an alarm signal.

US Pat. No. 10,132,046

CONCRETE TEXTURING MACHINE

Wirtgen GmbH, (DE)

1. A texturing machine for the subsequent treatment of a freshly produced concrete layer having a width between left and right edges and extending longitudinally in a work direction the texturing machine comprising:a machine frame;
at least one left side ground engaging unit and at least one right side ground engaging unit for supporting the machine frame from a ground surface;
at least one left side height adjustable column supporting the machine frame from the at least one left side ground engaging unit;
at least one right side height adjustable column supporting the machine frame from the at least one right side ground engaging unit;
at least one texturing device supported from the machine frame and configured to apply a texture into a not yet hardened surface of the concrete layer, the texturing device including an adjustable height crown point defined by an articulation of at least one of the machine frame and the texturing device;
at least one crown actuator configured to adjust the height of the crown point by pivoting relative to each other two portions of the at least one of the machine frame and the texturing device on opposite sides of the articulation;
at least one crown height sensor arranged to detect a height above the freshly produced concrete layer; and
a controller configured to receive an input signal from the at least one crown height sensor, the controller configured to generate a crown height control signal in response to the input signal, and to communicate the crown height control signal to the at least one crown actuator so that the height of the crown point of the texturing device is controlled by the crown actuator pivoting relative to each other the two portions of the at least one of the machine frame and the texturing device on opposite sides of the articulation.

US Pat. No. 9,995,009

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR OPERATING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled construction machine, comprising:a machine frame;
an operating drum arranged in a drum housing, wherein the housing is downwardly open and encloses the drum on at least one side by an edge protector;
a lifting assembly configured to adjust a height of the edge protector relative to the machine frame,
wherein the edge protector is configured in a floating position to automatically lower onto a surface of the ground from a raised position and, after coming into contact with the ground surface, to engage the ground surface with a specified contact force and follow changes in a height of the ground surface relative to the machine frame as the construction machine moves forward;
one or more sensors associated with the lifting assembly and configured to generate at least a distance signal indicating a height of the edge protector relative to the machine frame; and
a controller configured to receive the at least the distance signal from the one or more sensors and determine a reference value for a height of the ground surface relative to the machine frame and upon which the edge protector rests, by
determining a lowering speed of the edge protector, and
determining a height of the edge protector relative to the machine frame at a point in time at which the lowering speed of the edge protector is less than a specified limit value for the lowering speed.

US Pat. No. 10,344,435

MARKING UNDERGROUND OBSTACLES

Wirtgen GmbH, (DE)

1. A method of preparing an area of a ground surface to be milled by a milling machine, the method comprising:a) prior to performing any milling operation on the area of the ground surface, traversing the area with a survey vehicle separate from the milling machine, the survey vehicle including a sensor, a marking sprayer and a controller;
b) detecting the presence of a buried obstacle with the sensor and generating a sensor output signal indicative of the presence of the obstacle;
c) receiving the sensor output signal in the controller and generating a sprayer actuation signal in response to the sensor output signal; and
d) actuating the marking sprayer in response to the sprayer actuation signal and spraying the ground surface above the obstacle with a visible marking emitted from the sprayer, the visible marking including a visible indication of a depth of the obstacle under the ground surface.

US Pat. No. 10,253,461

VARIABLE WIDTH AUTOMATIC TRANSITION

Wirtgen GmbH, (DE)

1. A slipform paving machine apparatus, comprising:a machine frame having a variable frame width between a first side and a second side of the machine frame;
a plurality of ground engaging units, at least one of the ground engaging units being steerable to control a direction of the slipform paving machine apparatus;
a plurality of height adjustable supports supporting the machine frame from the plurality of ground engaging units;
a mold supported from the machine frame, the mold being configured to mold concrete into a concrete structure having an upper surface and lateral concrete sides as the slipform paving machine apparatus moves forward in an operating direction, the mold being variable in mold width so as to vary a paving width of the concrete structure;
at least one stringline sensor configured to detect an external stringline reference and to generate a guidance signal for the direction and height of the first side of the machine frame;
a width actuator configured to extend and contract to vary an extension distance of the width actuator and thereby vary the mold width;
an extension sensor configured to generate an extension signal corresponding to the extension distance of the width actuator;
a starting signal generator configured to generate a starting signal for a change in paving width, the starting signal generator including a starting point sensor configured to engage a starting point indicating structure fixed relative to the external stringline reference;
a cross slope sensor configured to generate a cross slope signal corresponding to a cross slope of the machine frame; and
a controller configured:
to receive the guidance signal and to control the direction and height of the first side of the machine frame in response to the guidance signal;
to receive the cross slope signal and to control the cross slope of the machine frame and thereby control a height of the second side of the machine frame in response to the cross slope signal;
to receive the starting signal and the extension signal and to control extension of the width actuator in accordance with a preprogrammed function to change the paving width in response to the starting signal as the slipform paving machine apparatus moves forward in the operating direction after receiving the starting signal.

US Pat. No. 10,184,337

MACHINE AND METHOD FOR SURFACE MINING OR ROAD MILLING

Wirtgen GmbH, (DE)

9. A method of removing material from a ground region, the method comprising:moving a machine having a ground engager for surface mining or road milling along the ground region;
detecting at least one quantity associated with an electrical property as a first property of the ground region using at least a detector element of a first type that is coupled to a component of the machine to move with the machine;
detecting at least one quantity associated with a second property of the ground region using at least a detector element of a second type that is coupled to a component of the machine to move with the machine, wherein the second property is different from the first property; and
providing composition information concerning a composition of at least one material layer in the ground region and thickness information concerning a thickness of the at least one material layer;
wherein at least the detected at least one quantity associated with the electrical property is used to provide at least one of the composition information and the thickness information.

US Pat. No. 10,167,721

MILLING MACHINE AND METHOD FOR OPERATING A MILLING MACHINE

Wirtgen GmbH, (DE)

8. A method of operating a milling machine having a plurality of milling tools, the milling machine operated with different machine parameter settings and with different milling drums depending on the milling task to be carried out, the method comprising:detecting via a camera at least one characteristic feature of an installed milling drum, wherein the at least one characteristic feature is selected from a group comprising one or more of: a number of milling tools; an arrangement of milling tools; and an orientation of at least one of the plurality of milling tools;
ascertaining one or more of a value to be set and a setting range for at least one machine parameter, based on the at least one characteristic feature of the milling drum; and
controlling operation of the milling machine based at least in part on the at least one machine parameter.

US Pat. No. 10,563,363

SCRAPER BAR FOR A SCRAPER BLADE OF A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A scraper bar for a scraper blade of a road milling machine, the scraper bar comprising:a carrier including a front side, a rear-side installation surface, and a cutting-element receptacle; and
a plurality of cutting elements serially arranged along a longitudinal axis extending in a width direction of the carrier on the cutting-element receptacle, each of the cutting elements including a cutting edge that transitions indirectly or directly into a rake surface;
wherein the cutting edge of at least some of the cutting elements extends along the width direction and is at least partially set at an inclination angle not parallel to the longitudinal axis.

US Pat. No. 10,562,433

METHOD FOR TRANSPORTING A LARGE MILLING MACHINE SELF-PROPELLED BY GROUND-ENGAGING UNITS

Wirtgen GmbH, (DE)

1. A method of transporting a milling machine using a tractor unit including a fifth-wheel coupling configured to be coupled to a semi-trailer behind the tractor unit, the milling machine including a machine frame, a plurality of ground-engaging units for propelling the milling machine, and a plurality of lifting columns extending between the machine frame and the plurality of ground-engaging units for adjusting a height of the machine frame above a ground surface, wherein the method comprises:(a) positioning the machine frame of the milling machine relative to one of the fifth-wheel coupling and a support trailer by using one or more of the lifting columns to raise the machine frame relative to the ground-engaging units, and by using one or more of the ground-engaging units of the milling machine to move the machine frame of the milling machine across the ground surface while the machine frame is raised relative to the ground engaging units;
(b) coupling the machine frame to and supporting the machine frame on the one of the fifth-wheel coupling and the support trailer;
(c)(1) positioning the machine frame of the milling machine relative to the other of the fifth-wheel coupling and the support trailer; and
(c)(2) coupling the machine frame to and supporting the machine frame on the other of the fifth-wheel coupling and the support trailer, such that at least the machine frame and the support trailer form a semi-trailer coupled to the fifth-wheel coupling.

US Pat. No. 10,550,530

METHOD FOR OPTIMIZING A CUTTING PROCESS IN ROAD MILLING MACHINES, AS WELL AS MILLING MACHINE FOR MACHINING ROAD COVERINGS

Wirtgen GmbH, (DE)

1. A milling machine for machining road coverings, comprising:a machine frame;
one or more front ground engaging traveling mechanisms supporting the machine frame;
one or more rear ground engaging traveling mechanisms supporting the machine frame, at least one of the front or rear ground engaging traveling mechanisms including a hydraulic drive;
a milling device fitted with milling tools and including a milling device drive;
an on board cooling liquid storage tank supported by the machine frame, the tank having a capacity for holding a cooling liquid;
a spray system arranged to spray the cooling liquid from the tank onto the milling tools, the spray system including a series of spray nozzles arranged across a milling width of the milling device, the nozzles being selectively operable to correspond to a current milling width of the milling device; and
a controller operably associated with the spray system, the controller being configured to selectively operate selected ones of the series of spray nozzles corresponding to the current milling width of the milling device;
wherein the controller is further configured to control a flow rate of cooling liquid to the spray system in dependence upon the current milling width.

US Pat. No. 10,472,780

SHIFTABLE MOLD

Wirtgen GmbH, (DE)

1. An inset slip form paving apparatus, comprising:a frame having a front and a rear defining a paving direction from the rear toward the front;
at least one left ground engaging support and at least one right ground engaging support configured to support the frame from a ground surface;
an inset mold assembly located below the frame and between the at least one left ground engaging support and the at least one right ground engaging support; and
an adjustable support assembly supporting the mold assembly from the frame so that the mold assembly is adjustable in position parallel to the paving direction relative to the frame between a retracted position and an extended position.

US Pat. No. 10,323,365

SELF-PROPELLED MILLING MACHINE, AS WELL AS METHOD FOR CONTROLLING A SELF-PROPELLED MILLING MACHINE

Wirtgen GmbH, (DE)

26. A method for controlling a self-propelled milling machine for milling a ground surface, wherein milling material worked off by a working drum in the milling operation is transported away by a transport conveyor comprising a discharge end, and is discharged from the discharge end onto a point of impingement on a loading surface of a transport vehicle, and wherein the transport conveyor can be automatically slewed at least laterally in the travelling and milling operation, the method comprising:receiving one or more inputs to a controller specifying a virtual trajectory for positioning the transport conveyor or the point of impingement which is freely selectable in a stationary coordinate system that is independent of the position and alignment of the machine frame; and
controlling at least the slewing angle of the transport conveyor in such a fashion that a reference point of the transport conveyor is always kept on the specified trajectory responsive to a change in position of the milling machine in the coordinate system.

US Pat. No. 10,196,784

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR DISCHARGING MILLED MATERIAL

Wirtgen GmbH, (DE)

17. A method of discharging worked-off milled material of an automotive milling machine onto a loading surface of a transport vehicle, the method comprising:(a) discharging milled material via a transport conveyor onto the loading surface of the transport vehicle at an adjustable discharge height and a conveying speed, the transport conveyor further being slewable sideways up to a mechanically limited permissible slewing angle relative to a longitudinal center line of a machine frame of the milling machine;
(b) detecting a position of the loading surface relative to the machine frame or the transport conveyor as seen in the direction of transport;
(c) automatically controlling positioning of the milled material on the loading surface of the transport vehicle by controlling at least the slewing angle of the transport conveyor; and
(d) specifying a maximum permissible slewing angle range within the mechanically limited permissible slewing angle about the longitudinal center line of the machine frame, and monitoring the slewing angle to maintain the slewing angle within the maximum permissible slewing angle range.

US Pat. No. 10,496,106

TRANSPORT MODE CONVERSION

Wirtgen GmbH, (DE)

1. A method of preparing a paving machine for transport, the paving machine including:a frame including a rear and a front, the frame defining a paving direction extending from the rear to the front;
a plurality of swing legs pivotally connected to the frame;
a plurality of ground engaging units, one ground engaging unit being steerably connected to each one of the swing legs, each of the ground engaging units including a drive such that the ground engaging unit is driven across the ground;
the method comprising the steps of:
(a) driving the ground engaging units to rotate the frame substantially in place on the ground through a re-orientation angle of the frame relative to the ground; and;
(b) as the frame is rotating, pivoting one or more of the swing legs from a paving position relative to the frame, to a transport position relative to the frame.

US Pat. No. 10,416,056

WEAR PROGNOSIS METHOD AND MAINTENANCE METHOD

Wirtgen GmbH, (DE)

1. A method of determining wear for an earth working machine having at least one earth working tool, the method comprising:prior to an earth working operation of the earth working machine:
sensing one or more position values corresponding to a current tool contour of the at least one earth working tool;
determining a first wear state by comparing the one or more position values of the current tool contour with a reference tool contour aligned therewith; and
during the earth working operation of the earth working machine:
continuously determining an actual work output of the earth working machine from one or more machine parameters;
determining a second wear state of the at least one earth working tool, based on a calculated change in wear from the first wear state corresponding to the continuously determined actual work output and a material property of a corresponding substrate worked since beginning the earth working operation;
predicting a remaining work output until a third wear state of the at least one earth working tool, based on an expected change in wear from the second wear state corresponding to a material property of a substrate yet to be worked during the earth working operation.

US Pat. No. 10,378,350

MILLING MACHINE AND PROCESS FOR THE OPERATION OF A MILLING MACHINE

Wirtgen GmbH, (DE)

24. A milling machine comprising:at least two assemblies which carry out specific machine functions subject to operating parameters;
a memory in which is stored, for each operating mode of a plurality of selectable operating modes, one or more of:
respective set values for at least two predetermined operating parameters which are assigned to the respective operating mode, and
at least one function describing the dependence of an operating parameter of one assembly on at least one operating parameter of at least one other assembly; and
a controller configured, upon selection of an operating mode from the plurality of operating modes, to control at least one of the at least two assemblies of the milling machine such that a specific machine function is carried out based on one or more of:
the respective set values for the at least two operating parameters which are stored in the memory for the selected operating mode, and
the at least one function which is stored in the memory for the selected operating mode.

US Pat. No. 10,370,803

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR OPERATING A SELF PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

11. A method for operating a self-propelled construction machine having a milling drum for machining the ground, the height of which drum is adjustable with respect to the ground, a particular advance speed (v), at which the construction machine moves in the terrain, a particular milling drum rotational speed (n), at which the milling drum rotates, and a particular height of the milling drum with respect to a surface of the ground to be machined being adjustable such that material is removed from the ground, the method comprising:determining a variable (?) which is characteristic of a milling profile on the basis of a functional relationship between the variable which is characteristic of the milling profile and the advance speed (v) and/or the milling drum rotational speed (n),
wherein the variable (?) which is characteristic of the milling profile is a correction variable for a predetermined milling depth (h), a value for the milling depth that is corrected using the correction variable being set instead of a specified milling depth (h).

US Pat. No. 10,337,155

CONSTRUCTION MACHINE, AS WELL AS METHOD FOR MILLING OFF AND TRANSPORTING AWAY A MILLED-OFF STREAM OF MATERIAL OF A CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

12. A method of operating a self-propelled cold milling machine including a milling drum, the method comprising:(a) milling off material from a ground surface with the milling drum as the cold milling machine moves across the ground surface;
(b) accepting milled-off material from the milling drum on a conveyor as the cold milling machine moves across the ground surface;
(c) transporting the milled-off material between a lower transport belt and an upper cover belt of the conveyor along at least a part of a length of the lower transport belt to a discharge end of the conveyor as the cold milling machine moves across the ground surface;
(d) discharging the milled-off material from the discharge end of the conveyor along a parabolic trajectory to a point of discharge as the cold milling machine moves across the ground surface;
(e) pivoting the conveyor relative to the machine frame such that both an inclination of the conveyor and a lateral alignment of the conveyor relative to the machine frame are adjusted; and
(f) adjusting a height of a cover belt frame of the upper cover belt relative to a transport belt frame of the lower transport belt.

US Pat. No. 10,208,436

SCRAPER DEVICE, AS WELL AS CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A construction machine, comprising:a machine frame including first and second lateral walls;
a milling drum mounted on the machine frame to rotate about a milling drum axis, so that the milling drum can mill off a ground surface;
a scraper blade located behind the milling drum with reference to a direction of travel of the construction machine, the scraper blade including:
an upper part mounted to swivel relative to the machine frame about a swiveling axis parallel to the milling drum axis, the swiveling axis being fixed in height relative to the machine frame; and
a lower part adjustable in height relative to the machine frame and the upper part, the lower part of the scraper blade including first and second lateral edges and first and second substantially vertically extending sliding surfaces defined adjacent the first and second lateral edges, respectively;
a lifting actuator connected between the upper and lower parts of the scraper blade and configured to move the lower part between a downwardly extended position and an upwardly retracted position;
first and second lateral retainers operably associated with the first and second lateral walls, the retainers being configured such that when the lower part of the scraper blade is in the downwardly extended position the scraper blade is retained by the lateral retainers in a position in a range of from vertical to an inclination of about 15° relative to vertical, the first and second lateral retainers including first and second rotatable sliding blocks, respectively, projecting from the lateral walls and engaging the first and second sliding surfaces, respectively, when the lower part of the scraper blade is in the downwardly extended position; and
a swiveling actuator articulated between a fixed part fixed relative to the machine frame, and the upper part of the scraper blade, the swiveling actuator being configured to swivel the scraper blade about the swiveling axis when the scraper blade is disengaged from the rotatable sliding blocks.

US Pat. No. 10,161,088

TRANSITION ON THE FLY

Wirtgen GmbH, (DE)

1. A slipform paving machine apparatus, comprising:a machine frame including a main frame module and at least one laterally extendable side frame member, the at least one laterally extendable side frame member being laterally extendable relative to the main frame module to vary a frame width;
at least one first side ground engaging unit and at least one second side ground engaging unit;
front and rear first side height adjustable supports supporting the machine frame from the at least one first side ground engaging unit;
at least one second side height adjustable support supporting the machine frame from the at least one second side ground engaging unit;
a variable width mold supported from the machine frame beneath the machine frame and laterally between the at least one first side ground engaging unit and the at least one second side ground engaging unit, the mold being configured to mold concrete into a concrete structure having an upper surface and lateral concrete sides as the machine moves forward in an operating direction;
at least two three-dimensional (3D) stringless reference objects configured to correspond to positions of the objects relative to an external reference system; and
a carrier frame having the at least two 3D stringless reference objects fixedly attached to the carrier frame so that a distance between the at least two 3D stringless reference objects is fixed, the carrier frame being supported from at least one of the main frame module and the at least one laterally movable side frame member.

US Pat. No. 10,562,573

ROAD CONSTRUCTION MACHINE, CRAWLER TRACK UNIT OF A ROAD CONSTRUCTION MACHINE, AS WELL AS METHOD FOR TENSIONING A CHAIN OF A CRAWLER TRACK UNIT

Wirtgen GmbH, (DE)

1. A road construction machine, comprising:a machine frame;
two front crawler track units and two rear crawler track units supporting the machine frame, each crawler track unit including:
a guide wheel having a guide wheel axis;
a drive wheel having a drive wheel axis;
a continuous chain extending around the guide wheel and the drive wheel;
at least one track roller which rolls on the chain; and
an adjustment device including a piston-cylinder unit, the piston-cylinder unit including a piston to which a hydraulic adjusting pressure can be applied to generate a piston force acting on at least one of the guide wheel and the drive wheel to adjust an axis spacing between the guide wheel axis and the drive wheel axis;
a hydraulic pressure source;
a central pressure limiting valve communicated with the hydraulic pressure source;
a hydraulic supply line communicating the central pressure limiting valve with the piston-cylinder units of all four of the crawler track units so that an equal hydraulic adjusting pressure is applied to all four of the piston-cylinder units; and
a common pressure accumulator separate from the hydraulic pressure source, the pressure accumulator being communicated with all four of the piston-cylinder units.

US Pat. No. 10,494,778

GROUND WORKING MACHINE, AS WELL AS METHOD FOR MILLING GROUND SURFACES OR TRAFFIC SURFACES

Wirtgen GmbH, (DE)

1. A ground working machine, comprising:a machine frame having a working direction;
a plurality of wheels or tracks for supporting the machine frame from a ground surface;
a working drum supported from the machine frame to rotate about a rotational axis transverse to the working direction of the machine frame, the working drum configured to rotate in an opposite direction to a direction of rotation of the wheels or tracks during forward milling operation in the working direction, the working drum being height adjustable to adjust a milling depth; and
a drum housing enclosing the working drum and forming a mixing chamber, the drum housing including a front drum flap with reference to the working direction, the drum flap including:
at least one upper flap part and at least one lower flap part, both the upper and lower flap parts closing the drum housing from the front;
wherein at least one of the upper and lower flap parts is pivotable so as to have an adjustable pivoting angle; and
wherein at least one of the upper and lower flap parts has an adjustable telescoping position.

US Pat. No. 10,421,489

METHOD FOR RUNNING-DIRECTION-DISCREPANT SIDEWAYS MOVEMENT OF AN EARTH WORKING MACHINE, AND EARTH WORKING MACHINE CONFIGURED TO EXECUTE SAID METHOD

Wirtgen GmbH, (DE)

1. A method for sideways movement of an earth working machine, the earth working machine comprising a machine frame supported by a propelling unit on a standing surface of a substrate, the propelling unit comprising at least one front drive unit and at least one rear drive unit, which drive units are configured to roll on the substrate in a running direction, the at least one front drive unit and the at least one rear drive unit each being rotatable relative to the machine frame around a respective steering axis associated with the respective drive unit so that the respective drive unit includes a modifiable steering angle relative to a longitudinal machine frame direction,wherein the sideways movement occurs in a sideways direction deviating from a travel direction of the earth working machine determined by the respective steering angles of the drive units, the method comprising the following steps:
tilting the at least one front drive unit relative to the standing surface in a first tilting direction around a front tilt axis enclosing an angle both with the steering axis and with the running direction of the respective drive unit, in such a way that a pivot point around which the tilted at least one front drive unit pivots relative to the substrate upon exertion of a steering torque around the respective steering axis is shifted away from a virtual intersection point at which the respective steering axis intersects the standing surface;
rotating the tilted at least one front drive unit relative to the machine frame around the respective steering axis in a first rotation direction and thereby pivoting the tilted at least one front drive unit relative to the substrate around the pivot point shifted away from the virtual intersection point;
tilting the at least one rear drive unit relative to the standing surface in a second tilting direction around a rear tilt axis enclosing an angle, both with the steering axis and with the running direction of the respective drive unit, in such a way that a pivot point around which the tilted at least one rear drive unit pivots relative to the substrate upon exertion of a steering torque around the respective steering axis is shifted away from a virtual intersection point at which the respective steering axis intersects the standing surface; and
rotating the tilted at least one rear drive unit relative to the machine frame around the respective steering axis in a second rotation direction and thereby pivoting the tilted at least one rear drive unit relative to the substrate around the respective pivot point shifted away from the respective virtual intersection point.

US Pat. No. 10,400,400

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR UNLOADING MILLED MATERIAL

Wirtgen GmbH, (DE)

11. A method of discharging removed milled material from an automotive milling machine onto a point of impingement on a loading surface of a transport vehicle, the method comprising:(a) removing the milled material from a ground surface with a working drum of the milling machine;
(b) discharging the milled material via a flight path in the form of a parabolic trajectory from a transport conveyor arranged in front of or behind the working drum relative to a direction of travel of the milling machine, the transport conveyor being slewable sideways in a slewing angle and adjustable in discharge height in an elevation angle;
(c) detecting an alterable position of the loading surface of the transport vehicle relative to the transport conveyor;
(d) comparing the detected alterable position of the loading surface in relation to the transport conveyor with stored control data for different relative positions of the loading surfaces of different transport vehicles, wherein the control data concern one or more parameters influencing the parabolic trajectory from the transport conveyor; and
(e) automatically controlling the parabolic trajectory of the flight path of the milled material based at least in part on control data corresponding to the detected alterable position of the loading surface, such that the milled material is discharged onto a specified point of impingement within the loading surface, independent of movements of the milling machine and the transport vehicle.

US Pat. No. 10,378,162

AUTOMOTIVE CONSTRUCTION MACHINE AND METHOD FOR DISPLAYING THE SURROUNDINGS OF AN AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. An automotive construction machine, comprising:a machine frame having a working direction;
front and rear running gears;
a working tool connected to the machine frame for removing ground material from a ground surface;
a plurality of lifting devices, each lifting device supporting the machine frame from one of the running gears, so that each lifting device can be retracted and extended to raise or lower the respective running gear in relation to the machine frame so that a height and an incline of the machine frame in relation to the ground surface can be changed;
a sensor system comprising a plurality of sensors configured to provide data corresponding to a respective lifting position for each of the plurality of lifting devices;
a computing unit configured to determine from the data at least the incline of the machine frame in relation to the ground surface;
a camera system including a plurality of cameras arranged to record overlapping individual image regions of surroundings of the construction machine from different image recording positions relative to the machine frame;
an image processing system operably associated with the sensor system and configured such that image details of the overlapping individual image regions are joined together to form a total image from a bird's eye view, and the image processing system being further configured such that a course of stitching between the image details is determined depending on at least the incline of the machine frame in relation to the ground surface; and
a display unit configured to display the total image.

US Pat. No. 10,378,163

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR STEERING AN AUTOMOTIVE MILLING MACHINE

Wirtgen GmbH, (DE)

22. A method for steering an automotive milling machine having a machine frame with a longitudinal axis and a slewable transport conveyor with a discharge end from which worked-off milling material is dischargeable onto a point of impingement on a loading surface of a transport vehicle, wherein the transport conveyor is laterally slewable to a slewing angle relative to the machine frame about an essentially vertical axis, the method comprising:controlling the slewing angle of the transport conveyor automatically in travelling and milling operations, at least as a function of a specified trajectory of a track of the milling machine and a curvature thereof, wherein a reference point of the transport conveyor remains on the specified trajectory responsive to a change in position of the machine frame respective to the specified trajectory.

US Pat. No. 10,377,311

AUTOMOTIVE CONSTRUCTION MACHINE AND METHOD FOR DISPLAYING THE SURROUNDINGS OF AN AUTOMOTIVE CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. An automotive construction machine, comprising:a machine frame having a working direction; a working drum supported from the machine frame for removing ground material; a camera system configured to record image details of overlapping individual image regions of surroundings of the construction machine, the camera system including: at least one camera arranged such that a viewing direction of the camera is directed substantially toward the machine frame; and at least one additional camera arranged on the machine frame such that a viewing direction of the additional camera is directed substantially away from the machine frame;
an image processing system configured such that the image details of the overlapping individual image regions are joined together to form a total image of the recorded surroundings of the construction machine from a bird's eye view; and a display unit configured to display the total image.

US Pat. No. 10,354,228

METHOD AND DEVICE FOR DETERMINING AN AREA CUT WITH A CUTTING ROLL BY AT LEAST ONE CONSTRUCTION MACHINE OR MINING MACHINE

Wirtgen GmbH, (DE)

1. A method of determining a milled volume of a construction machine including a milling drum, the method comprising:(a) milling a ground surface in a milling trajectory defined by travel of the construction machine across the ground surface;
(b) generating, with at least one sensor, data corresponding to a distance traveled by the construction machine;
(c) generating a milling depth signal corresponding to a current milling depth of the milling drum; and
(d) automatically determining the volume of material milled at least partially as a function of the data corresponding to the distance traveled and the milling depth signal.

US Pat. No. 10,308,111

SELF-PROPELLED CONSTRUCTION MACHINE

WIRTGEN GMBH, (DE)

1. A self-propelled construction machine, comprising:a machine frame;
a working unit arranged on the machine frame and configured to carry out work for a building operation;
a drive unit arranged on the machine frame and configured to drive the working unit, the drive unit including at least one internal combustion engine;
a first tank formed as an integral component of the machine frame, the first tank being either a fuel tank configured to hold fuel for the at least one internal combustion engine or a water tank; and
an operating material tank configured as an exchangeable unit removable from the first tank so that the first tank has a first capacity when the operating material tank is removed from the first tank, and a second capacity smaller than the first capacity when the operating material tank is received in the first tank, the operating material tank being configured to hold operating material.

US Pat. No. 10,287,882

EARTH WORKING MACHINE AND METHOD FOR WEAR-OPTIMIZED OPERATION OF AN EARTH WORKING MACHINE

Wirtgen GmbH, (DE)

10. A method for wear-optimized operation of an earth working machine having earth working tools, the method comprising:grouping one or more settable machine parameters into a machine parameter set for controlling the machine, wherein the one or more machine parameters are selected from a group comprising a milling depth, an advance rate, a milling drum rotation speed, a torque currently applied to the earth working tools, and power currently supplied by a drive engine;
ascertaining at least one material property during operation of the earth working machine on the basis of the one or more machine parameters; and
as a function of the ascertained at least one material property of a material to be removed, ascertaining at least one target machine parameter in order to establish wear-optimized operation.

US Pat. No. 10,227,870

CHISEL

Wirtgen GmbH, (DE)

1. A chisel for a ground processing machine, the chisel comprising:a chisel head including a curved support face integrally formed on the chisel head, the curved support face including at least one of a spherical and an ellipsoid curve, the chisel head further including a tool receiving member, the tool receiving member including at least one of an outer polygonal member and a recess formed in the chisel head;
a chisel shaft connected to the chisel head such that the support face faces the chisel shaft, the chisel shaft including a thread portion opposite the chisel head, the thread portion including a thread, the chisel shaft having a longitudinal center axis; and
a chisel tip carried by the chisel head, the chisel tip including a hard material aligned along the longitudinal center axis.

US Pat. No. 10,208,593

CHISEL HOLDER FOR A SOIL TREATMENT MACHINE

Wirtgen GmbH, (DE)

1. A tool apparatus for an earth working machine, comprising:an insertion projection; and
a support member having an insertion projection side and a working side, the insertion projection extending from the insertion projection side, the working side facing away from the insertion projection, the support member including a convex pyramid shaped bearing surface system defined on the insertion projection side, the convex pyramid shaped bearing surface system including at least three non-parallel planar bearing surfaces, each of the bearing surfaces forming a part of a side of one and the same pyramid shape having at least three sides, each of the bearing surfaces intersecting at least one other of the bearing surfaces.

US Pat. No. 10,704,212

METHOD FOR COUPLING A MACHINE FRAME OF AN EARTH WORKING MACHINE TO A WORKING DEVICE, EARTH WORKING MACHINE, AND CONNECTING APPARATUS FOR THE METHOD

Wirtgen GmbH, (DE)

1. A method of coupling a machine frame of an earth working machine to a working device, the method comprising:(a) arranging the machine frame and the working device relative to one another such that the working device is located between the machine frame and a substrate with which the earth working machine is in contact;
(b) aligning the machine frame and the working device relative to one another such that in an aligned state of the working device fastening formations of the working device are lined up, along a spacing direction having a directional component orthogonal to the substrate, with fastening counter-formations of the machine frame, the fastening formations and the fastening counter-formations being configured to allow the working device to be fastened to the machine frame using the fastening formations and the fastening counter-formations, the aligning step including:
(b)(1) connecting the machine frame and the working device to one another with a connector including at least one frame coupling portion coupled to the machine frame and at least one device coupling portion arranged at a distance from the frame coupling portion and coupled to the working device, the connector being configured such that in response to a weight of the working device the working device is movable relative to the machine frame parallel to an effective direction of gravity and orthogonally to the effective direction of gravity; then
(b)(2) allowing the working device to hang from the machine frame on the connector until the working device rests in the aligned state with the connector extending parallel to the effective direction of gravity; and then
(b)(3) supporting the working device;
(c) bringing the fastening formations and the fastening counter-formations closer to one another; and
(d) operably fastening the working device to the machine frame;
wherein step (b)(1) includes:
connecting the device coupling portion to at least one device coupling formation of the working device; and
connecting the frame coupling portion to at least one frame coupling formation of the machine frame; and
wherein the at least one device coupling formation is one of the fastening formations.

US Pat. No. 10,590,612

ACTUATING UNIT FOR LOCKING A COMPONENT OF A CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A lock actuating unit for locking a component of a construction machine, comprising:a retaining part configured to be fastened to the construction machine;
a piston fixed to the retaining part, the piston including a first piston end and a second piston end, the piston having a piston length from the first piston end to the second piston end;
a cylinder surrounding the piston such that a first cylinder chamber is formed on a first side of the piston and receives the first piston end and a second cylinder chamber is formed on a second side of the piston and receives the second piston end so that the cylinder can reciprocate along a longitudinal axis of the cylinder relative to the piston when the piston is longitudinally fixed relative to the construction machine, the cylinder including a cylindrical wall having a cut-out defined in the cylindrical wall, the cut-out extending along a cut-out length parallel to the longitudinal axis of the cylinder, the cut-out length being less than the piston length, the retaining part extending through the cut-out;
a first fluid connection in fluid communication with the first cylinder chamber; and
a second fluid connection in fluid communication with the second cylinder chamber.

US Pat. No. 10,577,036

CONSTRUCTION MACHINE FOR WORKING A GROUND PAVEMENT

Wirtgen GmbH, (DE)

1. A construction machine for working a ground surface, comprising:a machine frame;
at least one lifting column;
at least one travelling device configured to engage the ground surface, the at least one travelling device being connected to the machine frame via the at least one lifting column, the machine frame being adjustable in height relative to the ground surface by the at least one lifting column;
the at least one lifting column including a column element and a guiding element, the column element being an inner tubular column element and the guiding element being an outer tubular guiding element, the inner tubular column element being telescopingly received in and retractable into and extendible out of the outer tubular guiding element in a telescoping manner during height adjustment of the at least one lifting column;
a hydraulic piston-cylinder unit received in the inner tubular column element and connected between the inner tubular column element and the outer tubular guiding element for height adjustment of the lifting column;
a mount provided in the inner tubular column element; and
a locking element removably insertable into the mount such that when the locking element is inserted in the mount at least part of the locking element projects out of the inner tubular column element so as to limit retraction of the inner tubular column element into the outer tubular guiding element while permitting extension of the inner tubular column element out of the outer tubular guiding element.

US Pat. No. 10,465,347

METHOD FOR WORKING GROUND PAVEMENTS, AS WELL AS SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

26. A method for working ground pavements with a construction machine that is self-propelled via one or more travelling devices, and in which a milling drum is driven by a drive unit, wherein the milling drum works the ground pavement in a working operation, the method comprising:automatically detecting an interruption of the working operation;
upon detecting an interruption of the working operation, automatically interrupting the drive of the milling drum; and
delaying one or more of the movement of the construction machine and a lowering of the milling drum until the milling drum has reached a specified operating speed of revolution.

US Pat. No. 10,407,850

EJECTOR UNIT FOR A ROAD MILLING MACHINE OR THE LIKE

Wirtgen GmbH, (DE)

1. A milling drum for a road milling machine, the milling drum comprising:a cylindrical milling tube rotatable about a rotational axis, the rotational axis defining an axial direction parallel to the rotational axis;
a plurality of cutting bits mounted on the milling tube; and
at least one ejector assembly mounted on the milling tube, the ejector assembly including:
a carrier mounted on the milling tube, the carrier including first and second carrier mounting holes defined through the carrier, the carrier mounting holes being spaced apart in the axial direction;
an ejector body having a length and a width, the length being greater than the width, the ejector body having a front conveying side and a rear mounting side, the front conveying side having first and second forward facing conveying surfaces adjacent lengthwise edges of the front conveying side, the first and second forward facing conveying surfaces being curved along at least part of the length of the ejector body, the ejector body including two body mounting holes defined through the ejector body from the front conveying side to the rear mounting side, the body mounting holes being spaced apart in the axial direction, and the body mounting holes being aligned with the carrier mounting holes and the ejector body being configured so that the ejector body can be reversibly mounted on the carrier in either of two mounting positions rotated 180° from each other about an ejector body rotational axis extending through the front conveying side and the rear mounting side; and
first and second fasteners extending through the aligned carrier mounting holes and body mounting holes to mount the ejector body on the carrier.

US Pat. No. 10,352,164

BIT HOLDER AND BASE PART FOR RECEIVING A BIT HOLDER

Wirtgen GmbH, (DE)

1. A tool apparatus, comprising:an insertion projection having a longitudinal axis, the insertion projection including a bearing segment including at least one bearing surface; and
a supporting projection defining a bit longitudinal center axis enclosing an obtuse angle with the longitudinal axis of the insertion projection, the supporting projection including a supporting segment including at least one supporting surface configured to support the supporting projection, the at least one supporting surface facing away from the bit longitudinal center axis;
wherein the longitudinal axis of the insertion projection and the bit longitudinal center axis define a transverse central plane of the tool apparatus;
wherein at least one of the at least one bearing surface and the at least one supporting surface includes two surfaces located on opposite sides of the transverse central plane, the two surfaces being arranged at an angle to each other and thus non-parallel to each other; and
wherein the insertion projection includes an insertion projection front side facing in a tool feed direction, and the insertion projection includes on the insertion projection front side at least one pressure surface for impingement with a screw.

US Pat. No. 10,323,516

SYSTEM AND METHOD FOR THE TRACKING OF MILLING MATERIAL

Wirtgen GmbH, (DE)

1. A system for the tracking of milling material, comprising:a milling machine configured to mill a section of a ground pavement in a milling operation and to load onto a truck milling material removed during milling of the section of the ground pavement;
a first detection device configured to detect data relating to the milling material and to transmit the data relating to the milling material to a documentation device; and
a second detection device configured to detect position data corresponding to a deposition site upon which the milling material is deposited by the truck, and to transmit the position data to the documentation device;
wherein the documentation device is configured to link the position data with the data relating to the milling material.

US Pat. No. 10,260,207

METHOD OF REPAIRING AN EDGE GUARD FOR A ROAD MILLING MACHINE

Wirtgen GmbH, (DE)

1. A method of repairing an edge guard of a construction machine, the method comprising:(a) providing an edge guard including an edge portion having a plurality of insertion receptacles, and including a plurality of runner segments, each of the runner segments including a runner portion and an insertion projection, each of the insertion projections being received in one of the insertion receptacles, one or more of the runner portions being worn;
(b) removing a worn runner segment having a worn runner portion by withdrawing the insertion projection of the worn runner segment from its associated insertion receptacle; and
(c) replacing the worn runner segment with a new runner segment by inserting the insertion projection of the new runner segment into the insertion receptacle from which the worn runner segment was taken.

US Pat. No. 10,180,322

SELF-PROPELLED CIVIL ENGINEERING MACHINE SYSTEM WITH FIELD ROVER

Wirtgen GmbH, (DE)

1. A hand held field rover survey apparatus, comprising:a support rod having a lower end for engaging a ground surface;
a position sensor mounted on the support rod; and
a control unit communicated with the position sensor, the control unit including:
a position data determination component configured to determine position data using the position sensor to define a surveyed position of the position sensor in relation to a reference system;
a shape fitting component configured to define a defined shape corresponding to a series of surveyed positions which are determined with the position data determination component, the shape fitting component configured such that a user may select for at least some of the surveyed positions whether the positions are part of a straight line portion or part of a curved portion of the defined shape; and
a shape storing component configured to store in memory the defined shape defined by the shape fitting component.

US Pat. No. 10,626,563

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR OPERATING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled construction machine, comprising:a machine frame;
an operating drum arranged in a drum housing, wherein the housing is downwardly open and encloses the drum on at least one side by a height-adjustable edge protector;
wherein the edge protector is configured in a floating state to automatically lower onto a surface of the ground from a raised position and, after coming into contact with the ground surface, to engage the ground surface with a specified contact force and follow changes in a height of the ground surface relative to the machine frame as the construction machine moves forward;
one or more sensors configured to generate at least a distance signal indicating an actual height of the edge protector relative to the machine frame; and
a controller coupled to receive the at least the distance signal from the one or more sensors and configured to generate a control signal indicating that the edge protector is sinking into the ground when a difference between a reference value for the height of the ground surface and the actual height of the edge protector relative to the machine frame is greater than a specified limit value for a sinking-in depth of the edge protector.

US Pat. No. 10,619,322

DRY-BULK TANKER, CONVEYING SYSTEM FOR A DRY-BULK TANKER, AS WELL AS WORK TRAIN

Wirtgen GmbH, (DE)

1. A dry-bulk tanker for the provision of binding agent for soil stabilization to a spreading device, the dry-bulk tanker comprising:a storage container for the binding agent;
at least one intermediate chamber;
at least one mechanical conveyor configured to convey the binding agent from the storage container to the at least one intermediate container, the at least one mechanical conveyor including a rotary feeder including a plurality of conveying chambers, and the at least one mechanical conveyor including an isolated area wherein any one of the conveying chambers passing through the isolated area is connected neither to the storage container nor to the at least one intermediate chamber;
a pneumatic conveyor configured to convey the binding agent from the at least one intermediate chamber to the spreading device; and
a pressure relief device connected to the isolated area of the at least one mechanical conveyor.

US Pat. No. 10,590,613

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR DISCHARGING MILLED MATERIAL

Wirtgen GmbH, (DE)

1. An automotive milling machine for milling off milled material and discharging the milled material onto a loading surface of a transport vehicle, the milling machine comprising:a machine frame having a longitudinal center line;
a working drum supported from the machine frame for milling off the milled material;
a transport conveyor arranged to receive the milled material milled off by the working drum and to discharge the milled material onto the loading surface of the transport vehicle in a parabolic trajectory in accordance with a conveying speed, an elevation angle, and a slewing angle; and
a controller configured to:
dynamically specify a first set of limit values for a maximum permissible slewing angle range relative to the longitudinal center line of the machine frame, and
dynamically specify a second set of limit values for a slewing angle range relative to a longitudinal center line of the transport conveyor, each of said limit values in the second set of limit values being within the maximum permissible slewing angle range relative to the longitudinal center line of the machine frame.

US Pat. No. 10,458,078

ROAD MILLING MACHINE AND METHOD FOR MEASURING THE MILLING DEPTH

Wirtgen GmbH, (DE)

1. A method for measuring the milling depth of a road milling machine, the machine being operative to mill a ground surface with a milling roller lowered to a milling depth to create a milling track, the machine including at least one side plate located to at least one side of the milling roller to engage an untreated ground surface, and the machine including a stripping plate operative to be lowered onto the milling track generated by the milling roller, the method comprising:measuring the milling depth of the milling track, the measuring including detecting a measurement value of a ground engaging sensor engaging the milling track; and
correcting the measured milling depth in dependence on an offset distance between the ground engaging sensor engaging the milling track and a rotational axis of the milling roller, when the machine frame does not extend parallel to the untreated ground surface.

US Pat. No. 10,450,709

SELF-PROPELLED ROAD MILLING MACHINE FOR MILLING ROAD SURFACES, IN PARTICULAR LARGE-SCALE MILLING MACHINE, AND METHOD FOR MILLING ROAD SURFACES

Wirtgen GmbH, (DE)

1. A self-propelled road milling machine for milling road surfaces, comprising:front and rear ground engaging supports, as seen in a direction of travel;
a machine frame;
front and rear height adjustable lifting columns supporting the machine frame from the front and rear ground engaging supports, respectively;
a milling roller housing arranged at said machine frame between said front and rear ground engaging supports;
a single milling roller rotatably supported in said milling roller housing;
a hydraulic or electric milling roller drive unit integrated in said milling roller;
a conveyor belt cooperating with said milling roller housing to remove milling product milled off by said milling roller in a forward direction as seen in the direction of travel; and
two linear guides fixed to said machine frame and located below said machine frame between said front and rear ground engaging supports, the two linear guides being spaced from each other in said direction of travel, said milling roller housing and said milling roller being supported on said two linear guides between said front and rear ground engaging supports such that a weight force of said milling machine can be transmitted to said milling roller via said milling roller housing by height adjustment of each of said front and said rear lifting columns; and
wherein said milling roller, together with said milling roller housing and said milling roller drive unit, is supported so as to be displaceable along the two linear guides transversely to the direction of travel between multiple operating positions of said milling roller.

US Pat. No. 10,408,056

DRUM HOUSING FOR A WORKING DRUM OF A CONSTRUCTION MACHINE OR MINING MACHINE, CONSTRUCTION MACHINE OR MINING MACHINE, AS WELL AS METHOD FOR MONITORING THE CONDITION OF A WORKING DRUM OF A CONSTRUCTION MACHINE OR MINING MACHINE

Wirtgen GmbH, (DE)

1. A construction machine apparatus, comprising:a machine frame;
a plurality of wheels or crawler track units;
a plurality of lifting columns, each of the lifting columns adjustably supporting the machine frame from one of the wheels or crawler track units;
a milling drum including milling tools, the milling drum having a circumference and being rotatable about a drum axis, the drum axis defining a longitudinal direction of the milling drum, the milling drum being supported from the machine frame such that a milling depth is adjusted by height adjustment of the lifting columns;
a drum housing at least partially enclosing the circumference of the milling drum;
at least one sensor arranged relative to the drum housing to inspect the milling tools; and
wherein the drum housing and the at least one sensor are configured such that during inspection of the milling tools a sensing beam passing between the at least one sensor and the milling tools passes through an opening in the drum housing.

US Pat. No. 10,358,780

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR OPERATING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

1. A self-propelled construction machine, comprising:a machine frame;
a plurality of wheels or tracks supporting the machine frame;
a milling drum arranged on the machine frame;
a drive unit comprising independent drive trains for driving the wheels or tracks and the milling drum, respectively;
at least one sensor configured to detect at least one measurement variable (M(t)) which is characteristic of an operating state of the milling drum; and
a controller functionally linked to the drive unit and to the at least one sensor, and configured to adapt a rotational speed of the milling drum, based on at least one measurement variable (M(t)) which is characteristic of a critical operating state of the milling drum, independently of a travel speed of the construction machine in such a way that the milling drum is operated in a non-critical operating state.

US Pat. No. 10,329,910

SYSTEM AND METHOD FOR THE TRACKING OF MILLING MATERIAL

Wirtgen GmbH, (DE)

13. A method for the tracking of milling material, comprising:milling a section of a ground pavement with a milling machine in a milling operation;
depositing the milling material milled during the milling operation on a loading surface of a transport vehicle;
detecting data signals relating to the deposited milling material via a detection device; and
marking with a marking means the milling material deposited on the transport vehicle, the marking of the milling material depending on the data signals relating to the deposited milling material, or
marking with a marking means the transport vehicle loaded with the milling material, the marking of the transport vehicle depending on the data signals relating to the milling material.

US Pat. No. 10,267,146

SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

13. A method of operating a self-propelled construction machine, the construction machine including a machine frame, front and rear running gears for supporting the machine frame from a ground surface, a working roller arranged on the machine frame for working the ground surface, a plurality of lifting columns, each lifting column being associated with one of the running gears and configured to be retracted or extended for raising or lowering the associated running gear with respect to the machine frame so that the machine frame is lowered or raised with respect to the ground surface, and a controller operably associated with the lifting columns and configured to actuate the lifting columns, the method comprising steps of:in a first mode of operation working the ground surface with the machine frame in a lowered position with respect to the ground surface and with the working roller engaged with the ground surface; and
in a second mode of operation raising the machine frame to a raised position with respect to the ground surface wherein the working roller is not engaged with the ground surface, and in the second mode of operation:
detecting tilting of the machine frame at least transversely to a working direction;
detecting a lifting position of each of the lifting columns; and
actuating the lifting columns associated with the running gears by operation of the controller such that the machine frame is substantially horizontally levelled in response to both the detected tilting of the machine frame at least transversely to the working direction and the detected lifting positions of the lifting columns.

US Pat. No. 10,273,642

SELF-PROPELLED CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING A SELF-PROPELLED CONSTRUCTION MACHINE

Wirtgen GmbH, (DE)

12. A method for controlling a self-propelled construction machine having a working tool for working the ground in a specified working region, the method comprising:recording images of a portion of the ground which lies in front of the specified working region and in a working direction;
generating predictive object signals representing the position of objects in the recorded images;
obtaining current object signals relating to the working region from the predictive object signals, said current object signals representing a delayed position of the objects in a portion of the ground relating to the working region; and
displaying the recorded images of the portion of the ground on a display after the delay.

US Pat. No. 10,273,804

CHISEL HOLDER

Wirtgen GmbH, (DE)

20. A bit holder for an earth working machine, the earth working machine including a working drum rotatable in a tool advance direction and defining a radial direction relative to a rotational axis of the working drum, the bit holder comprising:a holding projection including a forward end face having a bit receptacle defined in the forward end face, the bit receptacle including a receiving end for receiving a cutting bit, the holding projection being configured such that when the bit holder is mounted on the working drum the forward end face faces partially forward in the tool advance direction and partially radially outward;
a carrier connected to the holding projection; and
a wear protection element received in the carrier behind the forward end face, the wear protection element including a hard-material element harder than the holding projection, the hard-material element being arranged to engage the earth in the event of wear or breakage of the cutting bit.

US Pat. No. 10,221,528

SWING OVER STEERING

Wirtgen GmbH, (DE)

1. A slip form paving machine, comprising:a machine frame;
first and second swing legs pivotally connected to the machine frame;
first and second ground engaging units steerably connected to the first and second swing legs, respectively, the ground engaging units including drive motors configured such that the ground engaging units are driven across a ground surface by the drive motors, each ground engaging unit including a crawler track;
a first steering sensor configured to detect a first steering angle of the first ground engaging unit relative to the first swing leg;
a second steering sensor configured to detect a second steering angle of the second ground engaging unit relative to the second swing leg;
a first lock configured to selectively lock and unlock the first swing leg in pivotal position relative to the machine frame;
a second lock configured to selectively lock and unlock the second swing leg in pivotal position relative to the machine frame; and
a controller including a swing leg pivot mode configured to allow each of the first and second swing legs to pivot relative to the machine frame in response to steering of the ground engaging unit connected to each swing leg as the machine is driven across the ground surface by the ground engaging units.

US Pat. No. 10,711,414

EARTH WORKING MACHINE HAVING A CONVEYING DEVICE QUICKLY DISTANCEABLE FROM THE MILLING UNIT, AND METHOD THEREFOR

Wirtgen GmbH, (DE)

1. An earth working machine, comprising:a machine frame;
a milling unit carried on the machine frame and including a milling tool and a milling tool housing configured to shield the milling tool with respect to an external environment of the earth working machine; and
a receiving conveyor configured to convey earth material, removed by the milling tool, away from the milling unit;
the receiving conveyor, both in an operationally ready operating state and in a non-operationally-ready installation state, being mounted on the earth working machine movably relative to the machine frame;
such that in the operating state of the receiving conveyor, a portion of the receiving conveyor located closer to the milling tool is coupled by a first motion coupling with a part of the milling tool housing movable relative to the machine frame, the receiving conveyor and the part of the milling tool housing being movable together;
such that in order to establish the installation state, the first motion coupling is disengageable, and the portion of the receiving conveyor located closer to the milling tool is swingably suspendable on the machine frame;
wherein the receiving conveyor, in addition to swingable suspension on the machine frame, is couplable by a second motion coupling, different from the first motion coupling, to a component arrangement of the earth working machine which is drivable to move relative to the machine frame, in such a way that a driven motion of the component arrangement, from an initial position into a final position different from the initial position, brings about a displacement of the swingably suspended receiving conveyor away from the milling unit.

US Pat. No. 10,704,209

SLIPFORM PAVER AND METHOD FOR OPERATING A SLIPFORM PAVER

Wirtgen GmbH, (DE)

1. A self-driving slipform paver comprisinga machine frame carried by at least three rolling assemblies and vertically adjustable by means of lifting columns, two or more of said rolling assemblies being drivable, and one or more of said rolling assemblies being steerable;
a support arranged on the machine frame for a slipform mould;
a controller for controlling the rolling assemblies, wherein the controller is configured such that specific velocities of the drivable rolling assemblies and steering angles of the one or more steerable rolling assemblies are adjustable, and
wherein the controller is configured, when the steering angles of the one or more steerable rolling assemblies change, to adjust the velocities of the drivable rolling assemblies so as to reduce the change in the velocity at which a reference point referring to the support for the slipform mould will move along a predefined trajectory, said change in velocity being caused by changing the steering angle.

US Pat. No. 10,746,546

SELF-PROPELLED CIVIL ENGINEERING MACHINE SYSTEM WITH FIELD ROVER

Wirtgen GmbH, (DE)

1. A method of surveying using a hand held field rover, the field rover including a support rod having a lower end for engaging a ground surface, and the field rover including a position sensor mounted on the support rod, the method comprising:(a) determining with the field rover a series of surveyed positions of a geometrical shape for a structure to be produced or the ground to which changes are to be made;
(b) enabling user selection for at least some of the surveyed positions whether the positions are part of a straight line portion or part of a curved portion of the geometrical shape; and
(c) defining a defined shape corresponding to the series of surveyed positions.

US Pat. No. 10,697,135

AUTOMOTIVE MILLING MACHINE, AS WELL AS METHOD FOR DISCHARGING MILLED MATERIAL

Wirtgen GmbH, (DE)

1. An automotive milling machine for milling off milled material and discharging the milled material onto a loading surface of a transport vehicle, the milling machine comprising:a machine frame;
a working drum supported from the machine frame for milling off the milled material;
a transport conveyor arranged to receive the milled material milled off by the working drum and to discharge the milled material onto the loading surface of the transport vehicle, the transport conveyor being mounted on the machine frame to be pivotable relative to the machine frame about an essentially horizontal first axis to define an elevation angle, and the transport conveyor being pivotable sideways about a second axis extending orthogonally to the first axis to define a slewing angle, the transport conveyor including a bottom side;
a detector comprising a sensing element having first and second ends respectively coupled to first and second end positions along the bottom side of the transport conveyor and configured to initiate an activation signal in case of contact by the sensing element with an object; and
a controller connected to the detector and configured, responsive to the activation signal from the detector, to generate one or more collision avoidance signals.

US Pat. No. 10,774,482

WORKING DEVICE

Wirtgen GmbH, (DE)

13. A milling drum, comprising:a milling drum tube having an axis of rotation;
a plurality of working tools mounted on the milling drum tube and projecting outward from the milling drum tube for contacting a material to be milled;
at least one load weight removably and symmetrically mounted on the milling drum to increase kinetic energy of the milling drum while maintaining balance of the milling drum, the at least one load weight being symmetrically mounted about the axis of rotation of the milling drum tube; and
at least one receptacle attached to the milling drum tube for receiving the at least one load weight.

US Pat. No. 10,753,052

SELF-PROPELLED MILLING MACHINE, AS WELL AS METHOD FOR CONTROLLING A SELF-PROPELLED MILLING MACHINE

Wirtgen GmbH, (DE)

1. A method for controlling a self-propelled milling machine for milling a ground surface, said milling machine having a machine frame with a longitudinal axis, wherein milling material worked off by a working drum in the milling operation is transported away by a transport conveyor comprising a discharge end, and is discharged from the discharge end onto a point of impingement on a loading surface of a transport vehicle, the method comprising:automatically controlling at least the slewing angle of the transport conveyor, at least as a function of a virtual trajectory for positioning the transport conveyor which is specified in a stationary coordinate system independent of the position and alignment of the machine frame, wherein a reference point of the transport conveyor remains on the specified trajectory responsive to a change in position of the machine frame within the coordinate system.