Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 1 of 14 PageID #: 33731
`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 1 of 14 PagelD #: 33731
`
`EXHIBIT 20
`EXHIBIT 20
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 2 of 14 PageID #: 33732
`
`plt
`
`1111144D11111141141L1
`
`11
`
`MI41
`
`OS MIMES
`
`i
`
`UNITED STATES DEPARTMENT OF COMMERCE
`United States Patent and Trademark Office
`
`December 20 2023
`
`THIS IS TO CERTIFY THAT ANNEXED HERETO IS A TRUE COPY FROM
`THE RECORDS OF THIS OFFICE OF
`
`PATENT NUMBER RE18268
`ISSUE DATE October 20 2020
`
`By Authority of the
`Under Secretary of Commerce for Intellectual Property
`and Director of the United States Patent and Trademark Office
`
`Rodney Glover
`Certifying Officer
`
`Ex 0007
`
`Case No CA No 17770JDW
`
`minnumrigniumianingr
`liGE435=20
`
`trtdmum
`
`mthormin
`
`1111111
`
`011111
`
`211ila4g7A2
`
`Ex
`
`00070001
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 3 of 14 PageID #: 33733
`
`19 United States
`12 Reissued Patent
`Busley et al
`
`1111111111111111111111111111111JR14118111111111111110111111111
`
`US RE48268 E
`10 Patent Number
`Oct 20 2020
`45 Date of Reissued Patent
`
`54 CONSTRUCTION MACHINE IN
`PARTICULAR ROAD MILLING MACHINE
`RECYCLER OR STABILIZER AS WELL AS
`DRIVE TRAIN FOR CONSTRUCTION
`MACHINES OF THIS TYPE
`71 Applicant Wirtgen GmbH Windhagen DE
`72 Inventors Peter Busley LinzRhein DE Dieter
`Simons Buchholz DE
`73 Assignee Wirtgen GmbH DE
`21 Appl No 15934603
`
`22 Filed
`
`Mar 23 2018
`Related US Patent Documents
`
`8408659
`Apr 2 2013
`12985400
`Jan 6 2011
`
`Reissue of
`64 Patent No
`Issued
`Appl No
`Filed
`US Applications
`63 Continuation of application No 11918247
`filed as
`application No PCTEP2006060907
`on Mar 21
`2006 now Pat No 7891742
`
`56
`
`AT
`CH
`
`References Cited
`US PATENT DOCUMENTS
`
`1445617 A
`3414327 A
`
`21923
`Jehu
`121968 Austin
`
`EOIC 23088
`29915
`
`Continued
`
`FOREIGN PATENT DOCUMENTS
`
`397826 B
`606626 AS
`
`71994
`111978
`
`Continued
`
`OTHER PUBLICATIONS
`
`English
`
`translation
`
`of CH 606626A5
`
`accessed
`
`at <http
`translationportalseposorgemtptranslateACTION=description
`retrievalCOUNTRY=CHENGINE=googleFORMAT=docdb
`KIND=A5LOCALE=en EPNUMBER=606626OPS=ops
`epoorg32SRCLANG=deTRGLANG=en>
`Continued
`
`Peter C English
`Primary Examiner
`74 Attorney Agent or Firm Lucian Wayne Beavers
`Patterson Intellectual Property Law PC
`
`30
`Foreign Application Priority Data
`Apr 15 2005 DE
`51 Int Cl
`E01C 23088
`E01C 2312
`
`10 2005 017 754
`
`200601
`200601
`Continued
`
`52 US Cl
`CPC
`
`E01C 23088 201301 B60K 1702
`201301 B60K 1704 201301 B60K 1728
`201301
`
`Continued
`58 Field of Classification Search
`CPC
`E01C 23088 E01C 23085 E01C 23127
`E01C 23122 E21C 2724 E21C 3102
`Continued
`
`is carried
`
`is
`
`least
`
`the
`
`at
`
`least
`
`57
`ABSTRACT
`A construction machine in particular road milling machine
`recycler or stabilizer with a machine frame 4 that
`by a chassis 2 with a working drum 6 and a drive train
`8 comprising at
`the least a drive engine 10 a traction
`mechanism 12 for the mechanical
`drive of the working
`drum 6 with a drive element an output element
`and a
`traction element 30 a device 14 for switching the torque
`between the drive engine 10 and working drum 6 and
`device 16 for driving at
`least one hydraulic pump it
`provided that elements of the drive train 8 are divided into
`two groups the first group 3 shows at
`drive engine 10 the second group 5 shows at
`least
`the
`drive element 11 of the traction mechanism and where the
`first and the second groups 3 5 are connected to one
`coupling device 20
`
`another via an articulated
`
`39 Claims 3 Drawing Sheets
`
`26
`
`18
`
`14
`
`11
`
`22
`
`Ex
`
`00070002
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 4 of 14 PageID #: 33734
`
`US RE48268 E
`
`Page 2
`
`Excerpt
`
`for PM 565B dated
`
`for PM 565B dated Oct 1999 2 pages Exhibit
`
`for PM 565B dated Jun 2001 4 pages Exhibit
`
`Statement by Mr Michael W Netka dated Oct 19 2017 concern
`things i the sale of several PM565 cold planers
`ing among other
`in the period 19941996
`and ii Catepillars Corporate Procedure
`in force during the same period in relation to the supply of technical
`sold 18 pages Exhibit 85
`manuals
`together with each machine
`from Catepillars Corporate Procedure Aug 28 1991
`Information 4
`the Technical
`Literature and Technical
`concerning
`pages Exhibit 86
`Catepillars Factory Notification List Version No 274 of Feb 1995
`7 pages Exhibit 87
`Catepillars Factory Notification List Version No 293 of Sep 1996
`8 pages Exhibit 88
`for a PM 565 machine Serial No 3TK00096 dated
`Sales invoice
`Sep 15 1995 1 page Exhibit 89
`Shipping order for a PM 565 machine Serial No 3TK00105 dated
`Mar 5 1996 1 page Exhibit 90
`PM 565B brochure
`dated Aug 1997 8 pages Exhibit 91
`PM 565B brochure
`dated Jul 1998 8 pages Exhibit 92
`Parts Manual for PM 565B dated Feb 2001 951 pages uploaded
`in 6 parts Exhibit 93
`for PM 565B dated Apr 2001
`Operating and Maintenance Manual
`172 pages uploaded
`in 4 parts Exhibit 94
`Technical Presentation STMG for PM 565B dated Jul 1998 216
`pages Exhibit 95
`for PM 565B dated Oct 2004
`Dissembly and Assembly Manual
`in 4 parts Exhibit 96
`128 pages uploaded
`Adjusting manual
`Systems Operating Testing
`May 2001 52 pages Exhibit 97
`Salesgram for PM565B dated Jun 2001 6 pages Exhibit 98
`Product Bulletin for PM 565B dated Sep 1997 44 pages Exhibit
`99
`Bid Specifications
`100
`Bid Specifications
`101
`Sale invoices of PM565B machines dating between Jul 25 2001
`Serial No 8G50211 and Dec 14 2004 Serial No 8G50267 with
`clients name redacted for confidentiality reasons 28 pages Exhibit
`102
`Excerpts from wwwmachinerytradeoffcom wwwmachinerytrader
`com wwwusedmachineryfinderscom and wwwmascuscous
`online
`listings for used Caterpillar PM 565 and PM 565B machines manu
`factured before the priority date of EP004 28 pages Exhibit 103
`from Catepillars website relating to technical manuals for
`Excerpts
`PM 565 PM 565B and PB465 offered for sale to the public 3
`pages Exhibit 104
`Statement by Mr Dario Sansone
`Product Specialist
`Italia Sr1 dated Mar 30 2018 concerning
`Servizi
`the features of
`the PM565 and PM 565B machines 6 pages Exhibit 105
`Wirtgen First Legal Brief Mar 1 2018 20 pages see p 911
`not prior art
`Wirtgen First Technical Brief Mar 6 2019 122 p see p 4651
`
`at Catepillar
`
`not prior art
`CAT First Technical Brief EP 1875004 Mar 13 2019 66 pages
`not prior art
`Wirtgen Second Technical Brief Apr 16 2019 127 p see p
`5883 not prior art
`CAT Second Technical Brief Apr 18 2019 104 pp see p
`2335 not prior art
`CAT Third Legal Brief Apr 23 2018 32 pages seep 24 not
`prior art
`Wirtgen Third Legal Brief Apr 23 2018 30 pages seep 1520
`not prior art
`Doc 13Brochures of Catepillar PM 565 Cold Planer dated Dec
`1992
`Statement of Defense in Italian litigation 60 pages not prior art
`English translation of Statement of Defense 57 pages not prior
`art
`CatepillarDoc 32 Parts Manual PM 565 Cold Planer 25 pages
`Sep 2001
`Catepillar Parts Manual PM 465 Cold Planer vol
`uploaded to EFS Web in 2 parts
`
`1 Oct 2000
`
`Ex
`
`00070003
`
`51 Int Cl
`B60K 1702
`B60K 1704
`B60K 1728
`B60K 2502
`52 US Cl
`CPC
`
`200601
`200601
`200601
`200601
`
`E01C 23127 201301 B60K 2025022
`201301
`
`58 Field of Classification Search
`CPC
`E21C 3106 E02F 320 E02F 3283 E02F
`384 E02F 920 E02F 922 E02F
`92292 B6OK 2025022 B6OK 2502
`B6OK 1702 B6OK 1704 B6OK 1728
`See application file for complete search history
`
`EO IC 23088
`1723
`
`299391
`
`B6OK 1728
`74154
`
`EO IC 23088
`
`References Cited
`
`PATENT DOCUMENTS
`
`et al
`
`121973 Hatcher
`31974
`Staab
`31980
`Jakob
`81982 Godbersen
`
`51990
`Lent et al
`61990 Arzberger et al
`41993 Bowling
`11995 Dickson
`11995 Swisher Jr
`81997 Kappel et al
`91998 Kingsley et al
`42005 Gaertner et al
`22011 Busley et al
`22004 Busley et al
`112004 Mercier et al
`122004 Yasuda et al
`12005 Ishii et al
`
`US
`
`AAAA AAAAAAAB
`
`I
`B2
`Al
`Al
`Al
`Al
`
`56
`
`3779608
`3796462
`4193636
`4343513
`
`4929121
`4934978
`5203388
`5378080
`5383743
`5657803
`5809985
`6877818
`7891742
`20040021364
`20040231910
`20040237490
`20050016304
`
`FOREIGN PATENT DOCUMENTS
`
`CN
`DE
`DE
`DE
`DE
`EP
`EP
`EP
`WO
`
`1143919 A
`2331588 Al
`3149768 Al
`10031195 Cl
`10300745 Al
`0080831 Al
`305658 Al
`1875004 BI
`WO 0201005 Al
`
`21997
`11975
`61983
`12002
`72004
`61983
`31989
`72010
`12002
`
`OTHER PUBLICATIONS
`
`English translation of DE 3149768 Al
`at <http
`accessed
`tran slationportal epo orgemtptranslateAC TION=des cripti on
`retrievalCOUNTRY=DEENGINE=googleFORMAT=docdb
`KINDAl LOCALEen EPNUMBER3149768OPSops
`epoorg3 2SRCLANG=deTRGLANG=en>
`English translation of Second Brief of Catepillar in Italian litiga
`tion 41 pages not prior art
`for PM 565 dated Nov 1999 733 pages uploaded in
`Parts Manual
`4 parts Exhibit 79
`Parts Manual for PM565 dated Sep 2001 1029 pages uploaded in
`6 parts Exhibit 80
`Operation and Maintenance Manual
`152 pages Exhibit 81
`Technical Presentation STMG for PM 565 dated Aug 1993 182
`in 4 parts Exhibit 82
`pages uploaded
`Excerpt from the Disassembly and Assembly 3408 Engine Supple
`ment manual for PM 565 dated Jun 1993 5 pages Exhibit 83
`Excerpt from the Disassembly and Assembly Cold Planer Machine
`Systems manual for PM 565 dated Jun 1993 3 pages Exhibit 84
`
`for PM 565 dated Jan 1995
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 5 of 14 PageID #: 33735
`
`US RE48268 E
`
`Page 3
`
`56
`
`References Cited
`
`OTHER Pt MT JCATIONS
`
`II Oct 2000
`
`Caterpillar Parts Manual PM 465 Cold Planer vol
`uploaded to EFS Web in 2 parts
`Written Opinion of the International Searching Authority in corre
`sponding PCTEP2006060907 6 pages not prior art
`CAT Third Technical Brief Oct 16 201939 psee p 1622Eng
`lish translationnot prior art
`Prelimary Technical Report of CTE Dec 23 2019114 psee p
`7690English translation not prior art
`Wirtgen Third Technical Brief Oct 15 201958 pSee p 2736Eng
`lish translationnot prior art
`CAT Observations
`To The Preliminary Report Jan 15 202069
`psee p 4850English translationnot prior art
`Report of CTE Mar 27 2020148 psee p
`Final Technical
`8290 English translation not prior art
`To The Preliminary Report Jan 16 202076
`Wirtgen Observations
`psee p 4975English translationnot prior art
`Exhibit 1 Machine Design A second look at gearbox efficiencies
`Jun 20 2002 2 p
`Exhibit 3 Catalog of GMT GmbH Nov 2004 138 p uploaded in
`Exhibit 4 Catalog of Phoenix AG Mar 2004 89 p uploaded in
`Exhibit 5 CentaflexA Catalog 200416 p
`
`3 parts
`
`2 parts
`
`cited by examiner
`
`Ex
`
`00070004
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 6 of 14 PageID #: 33736
`
`US Patent
`
`Oct 20 2020
`
`Sheet 1 of 3
`
`US RE48268 E
`
`Cyyym
`
`4
`
`A
`40
`<166M
`41
`
`4
`
`I
`
`4
`
`114o
`iltrilm 31111110A
`AIMON11
`
`Ex
`
`00070005
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 7 of 14 PageID #: 33737
`
`US Patent
`
`Oct 20 2020
`
`Sheet 2 of 3
`
`US RE48268 E
`
`26
`
`18
`
`14
`
`11
`
`Fig2
`
`Fig3
`
`Fig4
`
`18
`
`Ex
`
`00070006
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 8 of 14 PageID #: 33738
`
`US Patent
`
`Oct 20 2020
`
`Sheet 3 of 3
`
`US RE48268 E
`
`26
`
`118
`
`1
`
`16
`
`12
`
`Fig5
`
`Ex
`
`00070007
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 9 of 14 PageID #: 33739
`
`US RE48268 E
`
`1
`CONSTRUCTION MACHINE IN
`PARTICULAR ROAD MILLING MACHINE
`RECYCLER OR STABILIZER AS WELL AS
`DRIVE TRAIN FOR CONSTRUCTION
`MACHINES OF THIS TYPE
`
`2
`
`in an
`The effort
`the performance
`to increase
`results
`increased space requirement for the drive engine that needs
`to be accommodated within the pre determined fixed trans
`port width
`
`5
`
`SUMMARY OF THE INVENTION
`
`15
`
`25
`
`3 5
`
`45
`
`Matter enclosed
`
`in heavy brackets
`appears in the
`original patent but forms no part of this reissue specifica
`tion matter printed in italics indicates the additions
`made by reissue a claim printed with strikethrough
`the claim was canceled disclaimed or held
`indicates that
`invalid by a prior post patent action or proceeding
`
`This application is a reissue of US patent application Ser
`now US Pat No
`No 12985400 filed Jan 6 2011
`8408659 which is a continuation of US patent application
`Ser No 11918247
`entitled Construction Machine In
`Particular Road Milling Machine Recycler Or Stabilizer As
`Well As Drive Train For Construction Machines Of This
`Type of Busley et al filed Oct 11 2007 now US Pat
`No 7891742 which is a US National Stage filing of
`PCTEP2006060907 having an international filing date of
`Mar 21 2006 which claims priority to DE 1020050177549
`filed Apr 15 2005
`
`BACKGROUND OF THE INVENTION
`
`The invention concerns
`a construction machine in par
`ticular a road milling machine a recycler or a stabilizer as
`well as a drive train for construction machines of this type
`this type are known
`Construction machines
`of
`for
`from DE 10031195 Cl The construction machine
`instance
`for working ground surfaces shows a chassis that carries a
`machine frame A working drum is driven mechanically by
`a drive engine a pump transfer
`a drive train that comprises
`case a clutch and a belt drive The direct mechanical drive
`of the working drum which consists of a milling drum can
`be engaged or disengaged again by means of the clutch
`The support of the drive engine must be designed in a very
`stiff manner as this is also the support
`for the belt pulley of
`the belt drive on the drive side relative to the machine frame
`is understood
`rigidly supported arrange
`that a coaxial
`It
`ment of the shafts connecting the elements of the drive train
`is required and that with regard to the belt drive a rigid
`track aligned arrangement of the belt pulley on the drive
`side and on the output
`side is a basic requirement for the
`and long life of such a belt drive A
`functional performance
`is not feasible in particular for the reason
`soft elastic support
`the belt pulley on the drive side is supported
`that
`in a
`cantilevered manner This means that
`the two supporting
`points of the support are located on one side of the belt
`pulley with the belt pulley itself projecting freely on that
`side that
`lies opposite the support
`the belt pulley on both sides is not desired
`Supporting
`because of the transport width of the machine that has to be
`adhered to The stiff support of the drive train is disadvan
`tageous in that vibrations from the drive engine are trans
`mitted to the machine frame to a greater extent The vibra
`for the machine operator in the
`tions are not only unpleasant
`form of the vibrations transmitted to him but
`impair the
`working conditions because larger flat machine components
`hoods or tanks are stimulated to sound
`like for instance
`vibrations that are disturbing during the operation of the
`machine
`
`The purpose of the invention is therefore to further
`develop a construction machine of the type first mentioned
`10 above as well as a drive train for construction machines of
`that less vibrations from the drive
`that type in such a manner
`engine are transmitted to the machine frame with the drive
`the same time to be capable
`train being sufficiently rigid at
`of transmitting high mechanical power
`The invention provides
`in an advantageous manner that
`the elements of the drive train are divided into at least
`two
`the first group shows ie includes at
`groups that
`shows at
`drive engine the second group
`least
`20 element of the traction mechanism and that
`the first and the
`second group are connected to one another via an articulated
`device Dividing the drive train into two groups
`coupling
`makes it possible to support
`the groups of the drive train
`with different degrees of rigidity on the machine frame for
`the purpose of reducing the transmission of vibrations from
`frame The articulated
`the drive engine to the machine
`device between the first and the second group is
`coupling
`capable of balancing the different vibrational behavior of the
`first group and the second group due to its articulation
`30 without
`impeding a high transmission of power
`the support of the combus
`In conclusion this means that
`tion engine possibly with further elements of the drive train
`softer than the support
`in the first group may be considerably
`of the elements of the drive train accommodated
`in the
`second group which are to be attached to the machine frame
`in an as stiff manner as possible or in a rigid manner
`The first group with the drive engine is attached to the
`machine
`frame elastically with low spring stiffness
`that
`40 damps the vibrations from the drive engine for the purpose
`the transmission of vibrations to the machine
`of reducing
`frame and the second group
`is attached to the machine
`frame with high spring stiffness or in a rigid manner
`Dividing the drive train into two groups makes it possible
`to achieve in an advantageous manner that on the one hand
`the one group that comprises the drive engine preferably a
`combustion engine is supported in a relatively soft manner
`at the machine frame by way of which the vibrations from
`the drive engine that are transmitted to the machine frame
`so are damped considerably and that on the other hand the
`other group can be supported at the machine frame with high
`spring stiffness in a nearly rigid or rigid manner by way of
`and higher outputs are
`which higher forces are supported
`transmittable as a result In doing so the first and the second
`55 group which are attached to the machine frame with dif
`ferent degrees of rigidity are connected to one another via
`an articulated coupling
`device so that a slight dynamic axle
`offset andor angular error of the output
`shaft of the first
`group with the drive engine is permissible visAvis the drive
`60 shaft of the second group
`the first
`is provided that
`In a preferred embodiment
`group comprises at least the drive engine and the device for
`least one hydraulic pump and the second group
`driving at
`the device for switching the torque andor
`the
`comprises
`65 support of a drive element of the traction mechanism on the
`drive side preferably a belt drive In this embodiment
`the
`drive engine is coupled in a rigid manner with the device for
`
`least
`
`the
`
`the drive
`
`it
`
`Ex
`
`00070008
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 10 of 14 PageID #: 33740
`
`US RE48268 E
`
`4
`
`the transfer case is a part of the first group in which the
`hydraulic pumps point away from the drive engine as well
`as in that case in which the transfer case forms the input
`element of the second group in which the hydraulic pumps
`5 project in the direction of the drive engine
`The coupling device permanently couples an output shaft
`of the drive engine or of the first group with an input shaft
`least one hydraulic pump or
`of the device for driving the at
`an input shaft of the device for switching the torque or of
`the second group
`
`10
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`at
`
`3
`least one hydraulic pump and is supported
`driving the at
`together with that device elastically visAvis the machine
`frame
`The second group shows the device for switching
`the
`flow can be inter
`torque by means of which the power
`rupted andor the support of the drive element of the traction
`mechanism on the drive side This second group may be
`attached to the machine frame in a rigid or at
`least nearly
`rigid manner
`This embodiment offers the advantage that the device for
`least one hydraulic pump which also gener
`driving the at
`together with the drive
`can be supported
`ates vibrations
`engine preferably a combustion engine in a soft manner
`in
`the first group of the drive train This embodiment offers the
`in spite of the drive train for the
`additional advantage that
`milling drum being disengaged
`the hydraulic supply of the
`machine is ensured when the drive engine is running Those
`elements of the drive train however
`that generate only
`slight vibrations are combined in the second group
`it may be
`In accordance with an alternative embodiment
`least
`provided that
`the first group comprises
`the drive
`engine and the device for switching
`the torque and the
`second group comprises
`the device for driving at least one
`hydraulic pump andor the support of a drive element of the
`traction mechanism on the drive side
`In accordance with yet another alternative embodiment
`is provided that
`the first group comprises at
`least
`the drive
`engine and the second group comprises
`the device for
`driving the at least one hydraulic pump as well as the device
`for switching the torque andor
`the support of the drive
`element of the traction mechanism on the drive side
`The articulated coupling device may be torsionally rigid
`device may for
`The articulated
`be a
`coupling
`instance
`cardan shaft Alternatively
`the articulated coupling device
`may also be torsionally flexible and may for instance
`be an
`elastomeric
`coupling
`The device for driving the at least one hydraulic pump and
`the device for switching the torque as well as the support of
`the drive element of the traction mechanism on the drive side
`is jointly attached to the machine
`may form an entity that
`frame with high spring stiffness or in a rigid manner
`The device for driving the at
`least one hydraulic pump
`may consist of a pump transfer case for several hydraulic
`pumps
`The device for switching the torque is preferably arranged
`between the device for driving the at
`least one hydraulic
`pump and the drive element of the traction mechanism on
`the drive side
`casing with
`The transfer casing may show a gearbox
`several hydraulic pumps arranged at an outer circumference
`of the gearbox
`casing the said hydraulic pumps
`being
`capable of being jointly driven by means of the transfer case
`from the gearbox
`The hydraulic pumps project
`casing
`pointing towards the drive engine or pointing away from the
`drive engine The coupling
`device extends in the interior
`space of the gearbox
`is free from hydraulic
`casing that
`pumps The arrangement of the coupling device in the free
`space of the gearbox
`casing enables a compact
`interior
`
`it
`
`it
`
`design
`is provided that the coupling
`In a preferred embodiment
`shaft of the drive
`an output
`device permanently couples
`engine with an input shaft of the device for driving the at
`least one hydraulic pump andor an input shaft of the device
`for switching the torque The arrangement of the coupling
`device in the radially inner intermediate space of the gear
`box casing which is free from hydraulic pumps enables a
`compact design of the drive train both in that case in which
`
`15
`
`20
`
`40
`
`45
`
`55
`
`65
`
`of
`In the following embodiments
`the invention are
`explained in more detail with reference to the drawings The
`following is shown
`FIG 1 a first embodiment of the invention in the example
`of a road milling machine
`FIG 2 a second embodiment
`FIG 3 a third embodiment
`FIG 4 a fourth embodiment and
`FIG 5 a side view of the embodiment in FIG 4
`FIG 1 shows a schematic crosssection of a construction
`25 machine and namely in particular a road milling machine
`a recycler or a stabilizer with a working drum 6 that
`supported in a machine frame 4 Alternatively
`the working
`drum 6 may be supported in a drum housing that
`is in turn
`firmly attached to the machine frame or may also be sup
`30 ported to pivot at a machine frame 4 The machine frame 4
`is carried by a chassis that
`is not depicted in the drawings
`The working drum 6 may consist of for instance
`a milling
`drum The working drum 6 of the construction machine is
`driven by a drive train 8 that shows at
`least
`the following
`35 elements
`The drive train 8 includes
`a drive engine 10 that prefer
`ably consists of a combustion
`engine
`A traction mechanism 12 for the mechanical drive of the
`working drum 6 shows a drive element 11 that
`is coupled in
`shaft 17 and an
`a non rotatable manner with an output
`output element 13 that
`is coupled in a non rotatable manner
`with the drive shaft 15 of the working drum 6 A planetary
`gear may additionally be arranged between the drive shaft
`15 and the working drum 6
`The traction mechanism 12 preferably is a belt drive
`where the drive and output elements 11 13 consist of belt
`pulleys with several drive belts 30 revolving around the said
`belt pulleys Alternatively the traction mechanism 12 may
`also consist of a chain drive where the drive and output
`so elements 11 13 then consist of the corresponding
`sprockets
`The drive train 8 further shows a device for switching the
`torque 14 which is arranged in the drive train 8 between the
`drive engine 10 and the working drum 6 and preferably
`consists of a clutch
`a device 16 for driving
`The drive train 8 further includes
`hydraulic units for instance hydraulic pumps 18 where the
`said device 16 for driving hydraulic units is coupled with the
`drive engine 10
`least two groups
`The entire drive train 8 is divided into at
`60 with the first group showing at
`least the drive engine 10 and
`least the drive element 11 of the
`the second group showing at
`traction mechanism 12 The first and the second groups 3 5
`are connected to one another mechanically via an articulated
`device 20 The articulated
`device 20
`coupling
`coupling
`transmits the power supplied by a not depicted output shaft
`of the drive engine 10 to the second group 5 of the drive train
`8
`
`is
`
`Ex
`
`00070009
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 11 of 14 PageID #: 33741
`
`US RE48268 E
`
`6
`
`5
`In FIG 1 the first group comprises the combustion engine
`10 only which is coupled with the second group 5 via the
`coupling device 20 In the embodiment of FIG 1 the second
`least one
`the device 16 for driving at
`group 5 comprises
`hydraulic pump 18 namely a pump transfer case the clutch
`14 and the belt pulley 11 of the belt drive 12
`The combustion engine 10 is attached to the machine
`frame 4 by means of elastic springdamping elements 22
`low spring stiffness in such a manner that
`the
`showing
`vibrations occurring in particular in a combustion engine 10
`as well as structure borne sound are transmitted to the
`machine frame 4 to the smallest possible extent
`The second group 5 on the other hand is attached to the
`machine frame 4 by means of springdamping elements 24
`the second group 5 is
`showing high spring stiffness so that
`attached to the machine frame 4 in a nearly rigid manner
`The different manner of support or attachment of the first
`and the second groups 3 5 of the drive train 8 has the effect
`that when in operation the not depicted output shaft of the
`combustion
`engine 10 is not permanently in precise align
`ment with the also not depicted input shaft of the pump
`coupling device 20
`transfer case 16 with the articulated
`the dynamic misalignment
`balancing
`occurring
`during
`operation without the flow of power in the drive train 8 being
`disturbed
`As shown in FIGS 1 and 5 the working drum 6 has a drum
`rotational axis which is the rotational axis of shaft 15 As
`also shown in FIGS 1 and 5 the driven pulley 13 is also
`mounted on the shaft 15 and thus has a driven pulley
`rotational axis which
`is parallel and co axial with the
`rotational axes of the working drum 6 and the shaft 15 As
`shown in FIGS 1 and 5 the drive pulley 11 has a drive pulley
`rotational axis which is the rotational axis of the shaft 17 on
`which the drive pulley is mounted As further shown in FIGS
`1 and 5 the drive pulley 11 and the driven pulley 13 are
`aligned with each other in the direction that the drive belts
`30 extend and the rotational axes of the drive pulley 11 and
`the driven pulley 13 are parallel to each other And as is
`shown in FIG 1 an output axis of the drive engine 10 is
`aligned with an input axis of the hydraulic pump drive
`device 16 and with an input axis of the drive pulley 11 prior
`to operation of the construction machine The articulated
`coupling device 20 accommodates
`a lack of precise align
`ment between the output axis of the drive engine 10 and the
`input axes of the hydraulic pump drive device 16 and the
`drive pulley 11 due to dynamic movement of the drive engine
`10 relative to the second group 5 during operation of the
`construction machine
`Dividing the drive train and supporting the components of
`the drive train 8 in a different manner achieves that consid
`erably less vibrations are transmitted from the combustion
`engine 10 to the machine frame 4 In this way it
`is further
`larger flat machine
`are stimu
`that
`prevented
`components
`lated to sound vibrations that are disturbing during the
`operation of the machine
`device 20 may be torsionally
`The articulated
`coupling
`rigid and may consist of a cardan shaft
`Alternatively the articulated coupling device 20 may also
`device then
`be torsionally flexible where
`the coupling
`consists of an elastomeric
`coupling
`FIG 2 shows a second embodiment
`in which the first
`the combustion engine 10 and the pump
`group 3 comprises
`transfer case 16 As in the embodiment of FIG 1 the pump
`16 shows
`18 that
`several hydraulic pumps
`transfer case
`from the gearbox
`casing 26 of the pump
`axially project
`transfer case 16 preferably in a circumferentially uniformly
`distributed manner
`
`A spur gear
`is arranged inside the pump transfer case
`which jointly drives the individual hydraulic pumps The
`arrangement of the hydraulic pumps 18 results in a central
`free interior space 28 between the hydraulic pumps 18 in
`5 which the coupling
`device 20 may extend which serves to
`the first and the second groups 3 5 of the drive train
`connect
`8 This design of the pump transfer case 16 with a free
`interior space 28 enables the available
`for arranging
`space
`the drive 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 used due to the space saving arrangement of the
`components of the drive train 8
`In the embodiment of FIG 2 the pump transfer case 16
`ic nice included
`in the firct arniin cn that villratinnc that
`might be coming from the pump transfer case can also be
`absorbed by the springdamping element elements 22
`The second group 5 is formed by the clutch 14 and the belt
`pulley 11 of the belt drive 12 By means of the coupling
`20 device 20 the power of the combustion
`engine
`transmitted to the clutch 14 and then to the belt pulley 11
`As shown in FIG 2 an output axis of the drive engine 10
`is aligned with an input axis of the clutch 14 and with an
`input axis of the drive pulley 11 prior to operation of the
`25 construction machine The articulated coupling device 20
`accommodates
`a lack of precise alignment between the
`output axis of the drive engine 10 and the input axes of the
`clutch 14 and the drive pulley 11 due to dynamic movement
`of the drive engine 10 relative to the second group 5 during
`30 operation of the construction machine
`Insofar as the drive belts 30 and the second belt pulley 13
`which serves as output element are also part of the drive
`train 8 it
`is to be stated that
`these are also supported rigidly
`visAvis the machine frame 4 namely in that the second belt
`35 pulley 13 is arranged on the drive shaft 15 of the working
`drum 6
`In a further not depicted variant of the embodiment of
`FIG 2 the pump transfer case 16 may be arranged on that
`side of the combustion
`10 that
`lies opposite the
`engine
`device 20 so that
`in this case the combustion
`coupling
`engine 10 and the pump transfer case 16 also form the first
`group 3 of the drive train This embodiment is advantageous
`when a good accessibility of the components of the drive
`train 8 is desired
`In the embodiment of FIG 3 the first group 3 of the drive
`engine 10 and the clutch 14
`train comprises the combustion
`This embodiment also offers the advantage of a good usabil
`ity of the available width of the machine frame 4
`FIGS 4 and 5 show an embodiment
`in which the first
`so group 3 of the drive train 8 is formed by the combustion
`engine 10 that
`is coupled with the pump transfer case 16 via
`the coupling device 20 With the belt pulley 11 of the belt
`drive 12 the pump transfer case 16 forms the second group
`5 of the drive train 8 which is supported on the machine
`frame 4 in a rigid or nearly rigid manner
`As can be seen from FIG 5 the pump transfer case 16
`shows for
`18 that are
`six hydraulic pumps
`instance
`arranged in a circular manner and with for instance
`the
`same mutual distance to one another around the output shaft
`60 17 of the second group 5 of the drive train 8
`The clutch 14 is formed by the tensioning idler 32 of the
`belt drive 12 which can be actuated in the idling condition
`engine 10 When the tensioning idler 32
`of the combustion
`is in that position in which the drive belts 30 are tensioned
`then the power of the combustion
`engine 10 can be trans
`mitted to the working drum 6 When the tensioning idler 32
`the direction of the arrow that can be
`is swivelled against
`
`10
`
`15
`
`40
`
`45
`
`55
`
`65
`
`is
`
`first
`
`Ex
`
`00070010
`
`

`

`Case 1:17-cv-00770-JDW Document 369-20 Filed 04/12/24 Page 12 of 14 PageID #: 33742
`
`US RE48268 E
`
`7
`seen in FIG 5 then no power can be transmitted any longer
`so that the tensioning device with the tensioning idler 32 can
`be used as a clutch
`Although a preferred embodiment of the invention has
`is to be
`been specifically illustrated and described herein it
`that minor variations may be made in the appa
`understood
`ratus without departing
`from the spirit and scope of the
`invention as defined by the appended claims
`
`What
`is claimed is
`1 A method of operating
`a construction machine the
`construction machine including a machine frame carried by
`a chassis a working drum and a drive train the drive train
`including at least a drive engi