Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 1 of 10 PageID #: 25522
`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 1 of 10 PagelD #: 25522
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`EXHIBIT 9
`EXHIBIT 9
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`

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`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 2 of 10 PageID #: 25523
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`No image available for this record.
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`HIGHLY CONFIDENTIAL-OUTSIDE ATTORNEYS' EYES ONLY
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`CAT_00055778
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`

`

`7,891,742 B2 * 2/2011 Busley et al. ................ 299/.39.1
`
`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 3 of 10 PageID #: 25524
`USOO8408659B2
`(12) United States Patent
`(10) Patent No.: US 8.408,659 B2
`Busley et al.
`(45) Date of Patent: *Apr. 2, 2013
`(54) CONSTRUCTION MACHINE, IN
`(56)
`References Cited
`PARTICULAR ROAD MILLING MACHINE,
`RECYCLER OR STABILIZER, AS WELLAS
`U.S. PATENT DOCUMENTS
`DRIVE TRAIN FOR CONSTRUCTION
`3,779,608 A 12/1973 Hatcher et al.
`MACHINES OF THIS TYPE
`3,796.462 A
`3, 1974 Staab
`4,929, 121 A
`5/1990 Lent et al.
`
`
`4,934,978 A 6/1990 Arzberger et al.
`
`
`(75) Inventors: Peter Busley, Linz/Rhein (DE); Dieter
`
`Simons, Buchholz (DE)
`5,378,080 A
`1/1995 Dickson
`
`5,383,743 A
`
`1/1995 Swisher, Jr.
`
`
`5,809,985 A 9/1998 Kingsley et al.
`
`(73) Assignee: Wirtgen GmbH (DE)
`
`
`
`2004/0021364 A1 2/2004 Busley et al.
`
`
`(*) Notice: Subject to any disclaimer, the term of this
`
`
`patent is extended or adjusted under 35
`FOREIGN PATENT DOCUMENTS
`U.S.C. 154(b) by 0 days.
`CH
`606626 A5 11, 1978
`DE
`10031195 C1
`1, 2002
`
`
`This patent is Subject to a terminal dis
`EP
`O305658 A1 3, 1989
`* cited by examiner
`claimer.
`(21) Appl. No.: 12/985,400
`Primary Examiner John Kreck
`
`
`(22) Filed: Jan. 6, 2011
`Lucian Wayne Beavers
`Prior Publication Data
`(65)
`
`(57)
`ABSTRACT
`US 2011 FOO95594 A1 Apr. 28, 2011
`A construction machine, in particular road milling machine,
`
`
`
`
`
`
`recycler or stabilizer, with a machine frame (4) that is carried
`
`Related U.S. Application Data
`
`by a chassis (2) with a working drum (6) and a drive train (8)
`
`
`comprising at the least a drive engine (10), a traction mecha
`(63) Continuation of application No. 1 1/918,247, filed as
`
`
`
`
`
`application No. PCT/EP2006/060907 on Mar. 21,
`
`nism (12) for the mechanical drive of the working drum (6)
`
`
`with a drive element, an output element and a traction element
`2006, now Pat. No. 7,891,742.
`
`(30), a device (14) for switching the torque between the drive
`(30)
`
`
`Foreign Application Priority Data
`engine (10) and working drum (6), and device (16) for driving
`
`
`
`at least one hydraulic pump; it is provided that elements of the
`
`Apr. 15, 2005 (DE) ......................... 10 2005 O17754
`
`drive train (8) are divided into at least two groups, the first
`group (3) shows at least the drive engine (10), the second
`(51) Int. Cl.
`group (5) shows at least the drive element (11) of the traction
`
`mechanism, and where the first and the second groups (3,5)
`(2006.01)
`EOIC 23/088
`
`(52) U.S. Cl. ...................................................... 299/.39.1
`
`
`are connected to one another via an articulated coupling
`
`
`(58) Field of Classification Search ................. 299/36.1,
`device (20).
`299/.39.1 41.1
`
`
`See application file for complete search history.
`21 Claims, 3 Drawing Sheets
`
`(74) Attorney, Agent, or Firm Waddey & Patterson, P.C.;
`
`3.
`
`22
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`5
`
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`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 4 of 10 PageID #: 25525
`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 4 of 10 PagelD #: 25525
`
`U.S. Patent
`
`Apr. 2, 2013
`
`Sheet 1 of 3
`
`US 8,408,659 B2
`
` Fig.1
`
`

`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 5 of 10 PageID #: 25526
`U.S. Patent Apr. 2, 2013 Sheet 2 of 3
`US 8.408,659 B2
`
`
`
`Fig.4
`
`

`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 6 of 10 PageID #: 25527
`
`U.S. Patent Apr. 2, 2013 Sheet 3 of 3
`
`
`
`US 8.408,659 B2
`
`
`
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`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 7 of 10 PageID #: 25528
`
`US 8,408,659 B2
`1.
`2
`The invention provides in an advantageous manner that the
`
`
`
`CONSTRUCTION MACHINE, IN
`
`
`elements of the drive train are divided into at least two groups,
`PARTICULAR ROAD MILLING MACHINE,
`
`that the first group shows, i.e. includes, at least the drive
`RECYCLER OR STABILIZER, AS WELLAS
`
`engine, the second group shows at least the drive element of
`DRIVE TRAIN FOR CONSTRUCTION
`
`
`the traction mechanism, and that the first and the second
`MACHINES OF THIS TYPE
`
`
`group are connected to one another via an articulated cou
`
`
`pling device. Dividing the drive train into two groups makes
`
`
`This application is a continuation of U.S. patent applica
`
`
`it possible to support the groups of the drive train with differ
`
`
`tion Ser. No. 1 1/918,247 entitled Construction Machine. In
`
`
`ent degrees of rigidity on the machine frame for the purpose
`
`
`
`
`
`Particular Road Milling Machine, Recycler Or Stabilizer, As
`
`
`
`of reducing the transmission of vibrations from the drive
`
`Well AS Drive Train For Construction Machines Of This
`10
`
`
`engine to the machine frame. The articulated coupling device
`Type', of Busley et al., filed Oct. 11, 2007, which is a U.S.
`
`between the first and the second group is capable of balancing
`
`
`National Stage filing of PCT/EP2006/060907 having an
`
`
`
`the different vibrational behavior of the first group and the
`
`
`international filing date of Mar. 21, 2006, which claims pri
`
`
`
`second group due to its articulation, without impeding a high
`
`ority to DE 102005017754.9 filed Apr. 15, 2005.
`
`transmission of power.
`15
`
`
`In conclusion, this means that the Support of the combus
`
`
`
`
`tion engine, possibly with further elements of the drive train,
`BACKGROUND OF THE INVENTION
`
`
`in the first group may be considerably softer than the Support
`
`
`
`
`The invention concerns a construction machine, in particu
`
`of the elements of the drivetrain accommodated in the second
`
`
`
`
`lara road milling machine, a recycleror a stabilizer, as well as
`
`group, which are to be attached to the machine frame in an as
`
`
`a drive train for construction machines of this type.
`
`stiff manner as possible or in a rigid manner.
`
`
`Construction machines of this type are known, for instance,
`
`The first group with the drive engine is attached to the
`
`
`machine frame elastically with low spring stiffness that
`
`from DE 10031195 C1. The construction machine for work
`
`
`
`ing ground Surfaces shows a chassis that carries a machine
`
`damps the vibrations from the drive engine for the purpose of
`
`frame. A working drum is driven mechanically by a drive train
`
`
`
`reducing the transmission of vibrations to the machine frame,
`25
`
`
`
`that comprises a drive engine, a pump transfer case, a clutch
`
`and the second group is attached to the machine frame with
`
`high spring stiffness or in a rigid manner.
`
`
`and a belt drive. The direct mechanical drive of the working
`
`Dividing the drive train into two groups makes it possible
`
`
`drum, which consists of a milling drum, can be engaged or
`
`
`to achieve in an advantageous manner that, on the one hand,
`
`disengaged again by means of the clutch.
`
`
`
`the one group that comprises the drive engine, preferably a
`
`
`The Support of the drive engine must be designed in a very
`30
`
`
`
`
`combustion engine, is Supported in a relatively soft manner at
`
`
`stiffmanner, as this is also the support for the belt pulley of the
`
`the machine frame, by way of which the vibrations from the
`
`belt drive on the drive side relative to the machine frame. It is
`
`drive engine that are transmitted to the machine frame are
`
`
`
`
`
`understood that a coaxial, rigidly Supported arrangement of
`
`damped considerably, and that, on the other hand, the other
`
`the shafts connecting the elements of the drive train is
`
`group can be supported at the machine frame with high spring
`
`
`
`required and that, with regard to the belt drive, a rigid, track
`35
`
`stiffness in a nearly rigid or rigid manner, by way of which
`
`
`aligned arrangement of the belt pulley on the drive side and on
`
`
`higher forces are Supported and higher outputs are transmit
`
`
`the output side is a basic requirement for the functional per
`
`table as a result. In doing so, the first and the second group,
`
`formance and long life of such a belt drive. A soft, elastic
`
`
`
`support is not feasible in particular for the reason that the belt
`which are attached to the machine frame with different
`
`
`
`
`degrees of rigidity, are connected to one another via an articu
`
`
`pulley on the drive side is Supported in a cantilevered manner.
`40
`
`lated coupling device so that a slight dynamic axle offset
`
`
`This means that the two Supporting points of the Support are
`
`and/orangular error of the output shaft of the first group with
`
`
`located on one side of the belt pulley, with the belt pulley itself
`
`
`the drive engine is permissible vis-a-vis the drive shaft of the
`
`
`projecting freely on that side that lies opposite the Support.
`Second group.
`
`Supporting the belt pulley on both sides is not desired
`
`
`
`In a preferred embodiment, it is provided that the first
`
`because of the transport width of the machine that has to be
`45
`
`group comprises at least the drive engine and the device for
`
`adhered to. The stiff support of the drive train is disadvanta
`
`
`driving at least one hydraulic pump, and the second group
`
`geous in that vibrations from the drive engine are transmitted
`
`
`comprises the device for Switching the torque and/or the
`
`
`
`to the machine frame to a greater extent. The vibrations are
`
`
`
`Support of a drive element of the traction mechanism on the
`
`
`not only unpleasant for the machine operator, in the form of
`
`
`drive side, preferably a belt drive. In this embodiment, the
`
`
`the vibrations transmitted to him, but impair the working
`50
`drive engine is coupled in a rigid manner with the device for
`
`
`conditions because larger flat machine components like, for
`
`
`driving the at least one hydraulic pump, and is Supported
`
`
`instance, hoods or tanks, are stimulated to Sound vibrations
`
`
`
`together with that device elastically vis-a-vis the machine
`
`
`that are disturbing during the operation of the machine.
`
`
`
`The effort to increase the performance results in an
`frame.
`
`The second group shows the device for Switching the
`
`
`increased space requirement for the drive engine that needs to
`55
`
`torque, by means of which the power flow can be interrupted,
`
`
`be accommodated within the pre-determined fixed transport
`
`
`and/or the support of the drive element of the traction mecha
`width.
`
`nism on the drive side. This second group may be attached to
`the machine frame in a rigid or at least nearly rigid manner.
`SUMMARY OF THE INVENTION
`
`
`This embodiment offers the advantage that the device for
`60
`
`
`driving the at least one hydraulic pump, which also generates
`
`
`The purpose of the invention is, therefore, to further
`
`
`
`vibrations, can be supported together with the drive engine,
`
`develop a construction machine of the type first mentioned
`
`
`
`preferably a combustion engine, in a soft manner in the first
`
`above, as well as a drive train for construction machines of
`
`
`group of the drive train. This embodiment offers the addi
`
`that type, in such a manner that less vibrations from the drive
`
`
`tional advantage that, in spite of the drive train for the milling
`
`engine are transmitted to the machine frame, with the drive
`65
`
`
`drum being disengaged, the hydraulic Supply of the machine
`
`
`train being Sufficiently rigid at the same time to be capable of
`
`
`transmitting high mechanical power.
`
`is ensured when the drive engine is running. Those elements
`
`

`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 8 of 10 PageID #: 25529
`
`US 8,408,659 B2
`3
`4
`
`of the drive train, however, that generate only slight vibrations
`
`
`
`FIG.3 a third embodiment,
`are combined in the second group.
`
`FIG. 4 a fourth embodiment, and
`
`
`
`In accordance with an alternative embodiment, it may be
`FIG. 5 a side view of the embodiment in FIG. 4.
`
`
`provided that the first group comprises at least the drive
`
`FIG. 1 shows a schematic cross-section of a construction
`
`
`
`
`machine, and namely in particular a road milling machine, a
`
`
`engine and the device for Switching the torque, and the second 5
`
`
`recycler or a stabilizer with a working drum 6 that is sup
`
`
`group comprises the device for driving at least one hydraulic
`
`ported in a machine frame 4. Alternatively, the working drum
`pump and/or the Support of a drive element of the traction
`
`6 may be supported in a drum housing that is in turn firmly
`mechanism on the drive side.
`
`
`attached to the machine frame or may also be Supported to
`
`
`
`
`In accordance with yet another alternative embodiment, it
`
`
`pivotata machine frame 4. The machine frame 4 is carried by
`
`
`is provided that the first group comprises at least the drive
`10
`
`
`
`a chassis that is not depicted in the drawings. The working
`
`
`engine, and the second group comprises the device for driving
`
`
`
`drum 6 may consist of for instance, a milling drum. The
`
`the at least one hydraulic pump, as well as the device for
`
`working drum 6 of the construction machine is driven by a
`
`
`Switching the torque and/or the Support of the drive element
`
`drive train 8 that shows at least the following elements:
`of the traction mechanism on the drive side.
`
`The drive train 8 includes a drive engine 10 that preferably
`
`
`
`The articulated coupling device may be torsionally rigid. 15
`
`
`consists of a combustion engine.
`
`
`
`The articulated coupling device may, for instance, be a cardan
`
`
`
`
`shaft. Alternatively, the articulated coupling device may also
`A traction mechanism 12 for the mechanical drive of the
`working drum 6 shows a drive element 11 that is coupled in a
`
`
`
`be torsionally flexible and may, for instance, be an elasto
`
`non-rotatable manner with an output shaft 17, and an output
`meric coupling.
`
`element 13 that is coupled in a non-rotatable manner with the
`
`
`The device for driving the at least one hydraulic pump and
`
`drive shaft 15 of the working drum 6. A planetary gear may
`
`
`
`the device for Switching the torque, as well as the Support of
`
`
`additionally be arranged between the drive shaft 15 and the
`the drive element of the traction mechanism on the drive side
`working drum 6.
`
`
`may form an entity that is jointly attached to the machine
`
`
`
`The traction mechanism 12 preferably is a belt drive where
`
`frame with high spring stiffness or in a rigid manner.
`
`
`the drive and output elements 11, 13 consist of belt pulleys,
`
`
`The device for driving the at least one hydraulic pump may
`25
`
`
`with several drive belts 30 revolving around the said belt
`
`
`
`
`consist of a pump transfer case for several hydraulic pumps.
`
`
`
`
`pulleys. Alternatively, the traction mechanism 12 may also
`
`
`The device for switching the torque is preferably arranged
`
`consist of a chain drive, where the drive and output elements
`
`
`between the device for driving the at least one hydraulic pump
`
`
`11, 13 then consist of the corresponding sprockets.
`and the drive element of the traction mechanism on the drive
`
`
`The drive train 8 further shows a device for switching the
`
`side. The transfer casing may show a gearbox casing with sev
`30
`
`torque 14, which is arranged in the drive train 8 between the
`
`drive engine 10 and the working drum 6 and preferably con
`
`
`
`eral hydraulic pumps arranged at an outer circumference of
`
`
`
`the gearbox casing, the said hydraulic pumps being capable of
`sists of a clutch.
`
`
`The drive train 8 further includes a device 16 for driving
`
`
`being jointly driven by means of the transfer case. The
`
`
`
`
`hydraulic units, for instance, hydraulic pumps 18, where the
`
`
`
`
`hydraulic pumps project from the gearbox casing, pointing 35
`
`
`said device 16 for driving hydraulic units is coupled with the
`
`towards the drive engine or pointing away from the drive
`drive engine 10.
`
`
`
`engine. The coupling device extends in the interior space of
`
`The entire drive train 8 is divided into at least two groups,
`
`the gearbox casing that is free from hydraulic pumps. The
`with the first group showing at least the drive engine 10 and
`
`
`
`arrangement of the coupling device in the free interior space
`the second group showing at least the drive element 11 of the
`
`of the gearbox casing enables a compact design.
`40
`
`
`traction mechanism 12. The first and the second groups 3,5
`
`
`
`In a preferred embodiment, it is provided that the coupling
`
`
`are connected to one another mechanically via an articulated
`
`device permanently couples an output shaft of the drive
`
`
`
`coupling device 20. The articulated coupling device 20 trans
`
`engine with an input shaft of the device for driving the at least
`
`
`mits the power supplied by a not depicted output shaft of the
`
`one hydraulic pump and/or an input shaft of the device for
`drive engine 10 to the second group 5 of the drive train 8.
`
`
`
`
`Switching the torque. The arrangement of the coupling device 45
`
`
`In FIG. 1, the first group comprises the combustion engine
`
`
`in the radially inner intermediate space of the gearbox casing,
`10 only, which is coupled with the second group 5 via the
`
`which is free from hydraulic pumps, enables a compact
`
`
`coupling device 20. In the embodiment of FIG. 1, the second
`
`design of the drive train, both in that case in which the transfer
`
`
`group 5 comprises the device 16 for driving at least one
`
`case is a part of the first group, in which the hydraulic pumps
`
`
`hydraulic pump 18, namely a pump transfer case, the clutch
`
`point away from the drive engine, as well as in that case in 50
`14 and the belt pulley 11 of the belt drive 12.
`
`which the transfer case forms the input element of the second
`
`
`The combustion engine 10 is attached to the machine frame
`
`
`group, in which the hydraulic pumps project in the direction
`
`
`
`4 by means of elastic spring/damping elements 22 showing
`of the drive engine.
`
`
`The coupling device permanently couples an output shaft
`
`low spring stiffness, in Such a manner that the vibrations
`
`
`
`occurring in particular in a combustion engine 10, as well as
`
`of the drive engine, or of the first group, with an input shaft of 55
`
`
`the device for driving the at least one hydraulic pump, or an
`
`
`structure-borne Sound, are transmitted to the machine frame 4
`
`
`to the smallest possible extent.
`
`
`input shaft of the device for switching the torque, or of the
`
`The second group 5, on the other hand, is attached to the
`Second group.
`
`
`machine frame 4 by means of spring/damping elements 24
`
`showing high spring stiffness, so that the second group 5 is
`BRIEF DESCRIPTION OF THE DRAWINGS
`60
`
`attached to the machine frame 4 in a nearly rigid manner. The
`
`
`
`In the following, embodiments of the invention are
`
`
`
`different manner of support or attachment of the first and the
`
`
`
`
`explained in more detail with reference to the drawings. The
`
`second groups 3,5 of the drive train 8 has the effect that, when
`
`following is shown:
`
`
`in operation, the not depicted output shaft of the combustion
`
`
`
`engine 10 is not permanently in precise alignment with the
`
`
`FIG. 1 a first embodiment of the invention in the example 65
`
`
`also not depicted input shaft of the pump transfer case 16,
`
`of a road milling machine,
`
`
`with the articulated coupling device 20 balancing the
`FIG. 2 a second embodiment,
`
`

`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 9 of 10 PageID #: 25530
`
`US 8,408,659 B2
`6
`5
`
`dynamic misalignment occurring during operation without
`
`
`circular manner and with, for instance, the same mutual dis
`
`
`the flow of power in the drive train 8 being disturbed.
`
`tance to one another around the output shaft 17 of the second
`
`
`
`Dividing the drive train and Supporting the components of
`group 5 of the drive train 8.
`
`The clutch 14 is formed by the tensioning idler 32 of the
`
`the drive train 8 in a different manner achieves that consider
`
`
`
`
`
`ably less vibrations are transmitted from the combustion belt drive 12, which can be actuated in the idling condition of
`
`
`
`the combustion engine 10. When the tensioning idler32 is in
`engine 10 to the machine frame 4. In this way, it is further
`
`
`prevented that larger flat machine components are stimulated
`
`
`that position in which the drive belts 30 are tensioned, then the
`
`
`
`to Sound vibrations that are disturbing during the operation of
`
`
`power of the combustion engine 10 can be transmitted to the
`
`working drum 6. When the tensioning idler 32 is swivelled
`the machine.
`
`
`The articulated coupling device 20 may be torsionally
`
`
`against the direction of the arrow that can be seen in FIG. 5,
`10
`
`
`then no power can be transmitted any longer, so that the
`
`
`rigid, and may consist of a cardan shaft.
`
`
`
`Alternatively, the articulated coupling device 20 may also
`
`
`tensioning device with the tensioning idler 32 can be used as
`
`
`
`be torsionally flexible, where the coupling device then con
`a clutch.
`
`
`
`Although a preferred embodiment of the invention has
`
`sists of an elastomeric coupling.
`
`
`
`
`been specifically illustrated and described herein, it is to be
`
`FIG. 2 shows a second embodiment, in which the first
`15
`
`
`group 3 comprises the combustion engine 10 and the pump
`
`
`understood that minor variations may be made in the appara
`
`
`tus without departing from the spirit and scope of the inven
`
`
`transfer case 16. As in the embodiment of FIG. 1, the pump
`
`
`tion, as defined by the appended claims.
`
`
`
`transfer case 16 shows several hydraulic pumps 18 that axi
`
`ally project from the gearbox casing 26 of the pump transfer
`
`
`
`case 16, preferably in a circumferentially uniformly distrib
`What is claimed is:
`1. A method of operating a construction machine, the con
`
`
`
`uted manner.
`
`
`A spur gear is arranged inside the pump transfer case,
`
`
`
`struction machine including a machine frame carried by a
`
`
`
`which jointly drives the individual hydraulic pumps. The
`
`
`chassis, a working drum, and a drive train, the drive train
`
`
`
`arrangement of the hydraulic pumps 18 results in a central
`
`
`
`including at least a drive engine component, a traction drive
`25
`
`
`component for driving the working drum, a clutch compo
`
`
`free interior space 28 between the hydraulic pumps 18, in
`
`
`nent, and a hydraulic pump drive component, the method
`
`which the coupling device 20 may extend which serves to
`comprising:
`connect the first and the second groups 3,5 of the drive train
`
`
`(a) driving a Subset of the components of the drive train
`
`8. This design of the pump transfer case 16 with a free interior
`
`
`
`space 28 enables the available space for arranging the drive
`
`from the drive engine component with an articulated
`30
`
`
`coupling connected between the drive engine compo
`train 8 across the width of the machine to be used in a better
`
`
`way, so that a more powerful combustion engine 10 can be
`
`nent and the subset of the components, the subset includ
`
`
`used due to the space-saving arrangement of the components
`
`
`
`ing at least the traction drive component for driving the
`working drum;
`of the drive train 8.
`
`(b) Supporting the drive engine component from the
`
`
`In the embodiment of FIG. 2, the pump transfer case 16 is
`35
`
`machine frame elastically with a first spring stiffness;
`
`
`also included in the first group, so that vibrations that might
`
`be coming from the pump transfer case can also be absorbed
`and
`
`by the spring/damping element 22.
`
`
`(c) Supporting the Subset of the components from the
`The second group 5 is formed by the clutch 14 and the belt
`
`machine frame with a second spring stiffness, the second
`
`
`spring stiffness being relatively higher than the first
`
`pulley 11 of the belt drive 12. By means of the coupling device
`40
`spring stiffness.
`
`
`20, the power of the combustion engine is first transmitted to
`
`2. The method of claim 1, further comprising:
`the clutch 14 and then to the belt pulley 11.
`
`in step (a), accommodating movement of the drive engine
`
`Insofar as the drive belts 30 and the second belt pulley 13,
`
`
`
`component relative to the Subset of the components of
`
`which serves as output element, are also part of the drive train
`
`
`
`8, it is to be stated that these are also supported rigidly vis-a-
`
`
`the drive train by articulation of the articulated coupling.
`45
`vis the machine frame 4, namely in that the second belt pulley
`3. The method of claim 1, wherein:
`
`
`
`
`step (c) further comprises rigidly Supporting the Subset of
`
`13 is arranged on the drive shaft 15 of the working drum 6.
`
`the components from the machine frame.
`
`
`
`
`In a further, not depicted variant of the embodiment of FIG.
`
`
`2, the pump transfer case 16 may be arranged on that side of
`4. The method of claim 1, wherein:
`
`
`
`in step (a) the articulated coupling is torsionally rigid.
`
`
`the combustion engine 10 that lies opposite the coupling
`50
`
`device 20, so that in this case the combustion engine 10 and
`5. The method of claim 1, wherein:
`
`
`
`in step (a), the articulated coupling comprises a cardan
`
`the pump transfer case 16 also form the first group 3 of the
`
`
`
`drive train. This embodiment is advantageous when a good
`shaft.
`
`
`accessibility of the components of the drive train 8 is desired.
`6. The method of claim 1, wherein:
`
`
`
`in step (a), the articulated coupling is torsionally flexible.
`
`In the embodiment of FIG. 3, the first group 3 of the drive
`55
`
`
`train comprises the combustion engine 10 and the clutch 14.
`7. The method of claim 6, wherein:
`
`
`
`in step (a), the articulated coupling comprises an elasto
`
`
`This embodiment also offers the advantage of a good usabil
`meric coupling.
`
`ity of the available width of the machine frame 4.
`
`FIGS.4 and 5 show an embodiment in which the first group
`8. The method of claim 1, wherein:
`
`
`in step (a), the Subset of the components further includes
`
`3 of the drive train 8 is formed by the combustion engine 10
`60
`
`
`the clutch component, and the hydraulic pump drive
`
`that is coupled with the pump transfer case 16 via the coupling
`
`
`component, and wherein the traction drive component,
`device 20. With the belt pulley 11 of the belt drive 12, the
`
`
`the clutch component and the hydraulic pump drive
`
`pump transfer case forms the second group 5 of the drive train
`
`
`
`component are jointly Supported as a combined Subset
`
`8, which is Supported on the machine frame 4 in a rigid or
`
`entity; and
`nearly rigid manner.
`65
`
`
`
`step (c) further comprises Supporting the combined Subset
`
`As can be seen from FIG. 5, the pump transfer case shows,
`
`
`
`for instance, six hydraulic pumps 18 that are arranged in a
`entity from the frame with the second spring stiffness.
`
`

`

`Case 1:17-cv-00770-JDW Document 250-9 Filed 10/25/23 Page 10 of 10 PageID #: 25531
`
`US 8,408,659 B2
`8
`7
`wherein the first subset includes at least the drive engine;
`
`9. The method of claim 1, wherein:
`
`in step (a), the subset of the components of the drive train
`and
`
`
`
`further includes the clutch component and the hydraulic
`wherein the second subset includes at least one element
`
`pump drive component, with the clutch component
`
`
`Selected from the group consisting of:
`
`the hydraulic pump drive;
`
`
`being located between the hydraulic pump drive com
`
`ponent and the traction drive component.
`
`the clutch; and
`
`10. The method of claim 1, further comprising:
`the drive element of the traction drive assembly; and
`
`
`
`
`
`
`operating the clutch component and thereby Switching on
`wherein the first subset is attached to the machine frame
`
`and off the torque from the drive engine component to
`
`
`elastically with a lower spring stiffness so that transmis
`the working drum.
`
`
`sion of vibrations to the machine frame is reduced, and
`10
`11. The method of claim 1, wherein:
`the second subset is attached to the machine frame with
`
`a higher spring stiffness or in a rigid manner.
`
`
`in step (a), the clutch component is connected to the drive
`
`
`engine component, and the articulated coupling is
`
`15. The construction machine of claim 14, where:
`
`
`the second subset includes the hydraulic pump drive, the
`
`
`located between the clutch component and the subset of
`
`the components of the drive train.
`
`
`clutch, and the drive element of the traction drive assem
`15
`bly; and
`12. The method of claim 1, wherein:
`
`in step (a), the subset of the components of the drive train
`
`
`the clutch is connected between the hydraulic pump drive
`
`
`
`further includes the clutch component, and the articu
`
`and the drive element of the traction drive assembly.
`
`
`
`lated coupling is connected between the hydraulic pump
`
`16. The construction machine of claim 14, wherein the
`
`
`
`articulated coupling is torsionally rigid.
`
`drive component and the Subset of the components.
`13. The method of claim 1, wherein:
`
`17. The construction machine of claim 14, wherein the
`
`
`
`
`the traction drive component includes a drive pulley, a
`
`
`
`articulated coupling includes a cardan shaft.
`
`driven pulley attached to the work drum, and a drive belt
`
`18. The construction machine of claim 14, wherein the
`
`connecting the pulleys.
`
`
`
`articulated coupling is torsionally flexible.
`
`
`14. A construction machine, comprising:
`
`19. The construction machine of claim 18, wherein the
`25
`
`
`
`
`articulated coupling comprises an elastomeric coupling.
`
`a machine frame carried by a chassis;
`a working drum;
`
`20. The construction of claim 14, wherein:
`
`
`a drive train including at least the following elements:
`the first subset further includes the clutch.
`a drive engine;
`
`21. The construction machine of claim 14, wherein:
`
`
`
`
`a traction drive assembly for mechanically driving the
`
`the hydraulic pump drive includes:
`30
`
`
`
`working drum, the traction drive assembly including a
`
`a gearbox casing having an outer circumference and
`
`having an interior space; and
`
`
`
`drive element, an output element, and a traction ele
`
`
`
`
`a plurality of hydraulic pumps arranged radially outward
`ment,
`
`a clutch for switching the torque between the drive
`
`
`from the interior space so that the interior space is free
`
`
`from hydraulic pumps, the pumps projecting from the
`engine and the working drum; and
`35
`
`a hydraulic pump drive; and
`
`gearbox casing and pointing either towards or away
`
`from the drive engine; and
`wherein the elements of the drive train are divided into at
`
`
`
`
`the articulated coupling extends into the interior space of
`
`least a first Subset and a second Subset; and
`the gearbox casing.
`
`wherein the drive train further includes an articulated cou
`
`pling connecting the first Subset to the second Subset;
`40
`and
`
`k k k k k
`
`