EP3227498B1 - Ground engaging tool - Google Patents

Ground engaging tool Download PDF

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Publication number
EP3227498B1
EP3227498B1 EP15805704.2A EP15805704A EP3227498B1 EP 3227498 B1 EP3227498 B1 EP 3227498B1 EP 15805704 A EP15805704 A EP 15805704A EP 3227498 B1 EP3227498 B1 EP 3227498B1
Authority
EP
European Patent Office
Prior art keywords
lock
tool
ground engaging
detent
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15805704.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3227498A1 (en
Inventor
Phillip John Kunz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US14/941,297 external-priority patent/US9976287B2/en
Priority claimed from US14/941,326 external-priority patent/US20160160475A1/en
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Priority claimed from PCT/US2015/062384 external-priority patent/WO2016089669A1/en
Publication of EP3227498A1 publication Critical patent/EP3227498A1/en
Application granted granted Critical
Publication of EP3227498B1 publication Critical patent/EP3227498B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • E02F9/2841—Retaining means, e.g. pins resilient
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins

Definitions

  • the present disclosure relates generally to a ground engaging tool and, more particularly, to a ground engaging tool that is removably attachable to an earth-working machine.
  • Earth-working machines such as, for example, excavators, wheel loaders, hydraulic mining shovels, cable shovels, bucket wheels, bulldozers, and draglines, are generally used for digging or ripping into the earth or rock and/or moving loosened work material from one place to another at a worksite.
  • These earth-working machines include various earth-working implements, such as a bucket or a blade, for excavating or moving the work material. These implements can be subjected to extreme wear from the abrasion and impacts experienced during the earth-working applications.
  • ground engaging tools such as teeth, edge protectors, and other wear members, can be provided on the earth-working implements in the areas where the most damaging abrasions and impacts occur.
  • These ground engaging tools are removably attached to the implements using customized retainer systems, so that worn or damaged ground engaging tools can be readily removed and replaced with new ground engaging tools.
  • the system includes a rotating lock having a slot for receiving a post of an adapter that is mounted to or part of a work tool.
  • the lock is positioned in a retainer bushing, which is positioned in a lock cavity of a ground engaging tool.
  • the present invention seeks to overcome the problems associated with such known retainer systems.
  • the present disclosure is directed to a lock for a ground engaging tool and a ground engaging tool assembly comprising such a lock as set out in the claims.
  • Fig. 1 illustrates an excavator bucket assembly 1 as an exemplary implement of an earth-working machine.
  • Excavator bucket assembly 1 includes a bucket 2 used for excavating work material in a known manner.
  • Bucket 2 may include a variety of ground engaging tools.
  • bucket 2 may include a plurality of tooth assemblies 10, as ground engaging tools, attached to a base edge 5 of bucket 2. Tooth assemblies 10 may be secured to bucket 2 employing retainer systems according to the present disclosure. While various embodiments of the present disclosure will be described in connection with a particular ground engaging tool assembly (e.g., tooth assembly 10), it should be understood that the present disclosure may be applied to, or used in connection with, any other type of ground engaging tools or components. Further, it should be understood that one or more features described in connection with one embodiment can be implemented in any of the other disclosed embodiments unless otherwise specifically noted.
  • tooth assembly 10 may include an adapter 20 configured to engage base edge 5 of bucket 2 or other suitable support structure of an implement. Tooth assembly 10 may also include a ground-engaging tip 30 configured to be removably attached to adapter 20. Tooth assembly 10 may further include a lock 60 configured to secure tip 30 to adapter 20. Tip 30 may endure the majority of the impact and abrasion caused by engagement with work material, and wear down more quickly and break more frequently than adapter 20. Consequently, multiple tips 30 may be attached to adapter 20, worn down, and replaced before adapter 20 needs to be replaced. As will be detailed herein, various exemplary embodiments of lock 60, consistent with the present disclosure, may facilitate attachment and detachment of ground engaging tools to and from the support structure of an implement.
  • Adapter 20 may include a pair of first and second mounting legs 26, 28 defining a recess 27 therebetween for receiving base edge 5.
  • Adapter 20 may be secured in place on base edge 5 by attaching first mounting leg 26 and second mounting leg 28 to base edge 5 using any suitable connection method.
  • mounting legs 26 and 28 and base edge 5 may have corresponding apertures (not shown) through which any suitable fasteners such as bolts or rivets may be inserted to hold adapter 20 in place.
  • mounting legs 26 and 28 may be welded to the corresponding top and bottom surfaces of base edge 5. Any other connection method and/or configuration known in the art may be used alternatively or additionally.
  • an adapter may be configured to use any of the retainer systems disclosed herein to secure the adapter to a suitable support structure of an implement.
  • Adapter 20 may include a nose 21 extending in a forward direction. Nose 21 may be configured to be received in a mounting cavity 35 of tip 30, shown in Fig. 3 . Nose 21 may be configured to support tip 30 during use of bucket 2 and to facilitate retention of tip 30 on nose 21 when bearing the load of the work material. Nose 21 may include an integral post 23 extending from each lateral side 22, 24. Post 23 may have various shapes and sizes. In one exemplary embodiment, as shown in Fig. 2 , post 23 may have a frustoconical shape. As will be described in more detail herein, posts 23 may cooperate with locks 60 to secure tip 30 to adapter 20.
  • tip 30 may include an interior surface 100, which may define mounting cavity 35, an exterior surface 101, and a rear surface 102, which may connect interior surface 100 to exterior surface 101.
  • exterior surface 101 may generally taper as it extends forward.
  • an upper portion 32 of exterior surface 101 may slope downward as it extends forward, and a lower portion 38 of exterior surface 101 may extend generally upward as it extends forward.
  • lower portion 38 may extend generally straight or downward as it extends forward.
  • exterior surface 101 At its forward end, substantially opposite of rear surface 102, exterior surface 101 may define a wedge-shaped front edge 31 of tip 30.
  • tip 30 may be secured to adapter 20 via lock 60.
  • Tip 30 may have various configurations for accommodating adapter 20 and lock 60.
  • interior surface 100 may define slots 103 recessed into tip 30's lateral sides 37 to receive posts 23 of adapter 20.
  • a lock opening surface 104 in each of tip 30's lateral sides 37 may define a lock opening 40, into which one of slots 103 may extend from rear surface 102.
  • Lock opening 40 may extend from interior surface 100, through side 37, to exterior surface 101, and may house lock 60 and a post 23 received via the one of slots 103. While the exemplary embodiment shown in Figs.
  • tip 30 may have different numbers and/or arrangements of lock opening surfaces 104 (and lock openings 40).
  • tip 30 may have more than one lock opening surface 104 (and lock opening 40) on each lateral side 37, or may have a lock opening surface 104 (and lock opening 40) on only a single lateral side 37.
  • lock opening surface 104 may include a generally circular inner portion 105 and a generally circular outer portion 106.
  • Inner portion may be adjacent interior surface 100, while outer portion 106 may be adjacent exterior surface 101.
  • portions 105 and 106 may be generally cylindrical.
  • outer portion 106 may have a smaller diameter than inner portion 105 to prevent lock 60 from passing all the way through lock opening 40.
  • one or both of portions 105 and 106 may be generally frustoconical to prevent lock 60 from passing all the way through lock opening 40.
  • inner portion 105 may be configured to guide and intermittently inhibit rotation of lock 60 within lock opening 40.
  • inner portion 105 may define a groove 107 in tip 30 positioned circumferentially around lock opening 40.
  • Groove 107 may interact with one or more detent projections 67 of lock 60 to ensure lock 60 rotates about lock rotation axis 65 (referring to Figs. 4 and 6 ) and does not fall out of lock opening 40.
  • groove 107 may interact with the one or more detent projections 67 to ensure lock 60 does not fall out of lock opening 40 regardless of how lock 60 is rotated.
  • inner portion 105 may define one or more channels (not shown) extending from groove 107 to interior surface 100 to allow lock 60 to fall out of lock opening 40 when lock 60 is rotated to certain positions in which the one or more detent projections 67 align with the one or more channels.
  • Inner portion 105 may also define at least one detent recess 77 in tip 30 along groove 107, which may interact with one or more detent projections 67 of lock 60 to inhibit rotation of lock 60 when engaged by the one or more detent projections 67.
  • inner portion 105 may define two detent recesses 77 in tip 30 along groove 107. These detent recesses 77 may be spaced apart from one another by approximately 180 degrees to intermittently inhibit rotation of lock 60 at 180 degree intervals.
  • detent recesses 77 may be shaped like detent projections 67 to optimize engagement with detent projections 67.
  • detent recesses 77 may be at least partially sphere-shaped to optimize engagement with detent projections 67 that are at least partially sphere-shaped.
  • detent recesses 77 may be otherwise shaped.
  • detent recesses 77 may be at least partially football- or bullet-shaped if detent projections 67 are at least partially football- or bullet-shaped.
  • lock opening 40 may house and allow rotation of lock 60 about lock rotation axis 65.
  • lock 60 may include a head portion 80, which may have a top section 108 and a bottom section 109.
  • lock 60 may include a C-shaped skirt 63 extending from bottom section 109, and defining a lock slot 62 for receiving post 23.
  • skirt 63 may define an outer surface 66 of lock 60, which may be configured to be rotatably received in lock opening 40 of tip 30.
  • outer surface 66 may have substantially the same cylindrical (as shown) or frustoconical profile as lock opening 40.
  • outer surface 66 may be circular and extend circumferentially around lock rotation axis 65. While head portion 80's portion of outer surface 66 may extend completely around lock rotation axis 65, skirt 63's portion of outer surface 66 may extend only partway around lock rotation axis 65.
  • lock 60 With outer surface 66 of lock 60 so configured, lock 60 may be seated within lock opening 40 with top section 108's portion of outer surface 66 mated to outer portion 106 of lock opening 40, and the remainder of outer surface 66 mated to inner portion 105 of lock opening 40.
  • lock rotation axis 65 may be approximately perpendicular to the part of exterior surface 101 of tip 30 surrounding lock opening 40.
  • lock rotation axis 65 may be otherwise angled relative to this part of exterior surface 101.
  • lock 60 may include one or more detent projections 67, which may interact with groove 107 and detent recesses 77 of tip 30 to guide and intermittently inhibit rotation of lock 60 within lock opening 40.
  • bottom section 109 of head portion 80 of lock 60 may include these detent projections 67.
  • bottom section 109 may include two at least partially spherically-shaped detent projections 67, which may be spaced apart from one another by approximately 180 degrees.
  • bottom section 109 may include another number of detent projections 67, and such detent projections 67 may or may not be approximately equally spaced along a circumference of bottom section 109.
  • detent projections may be otherwise shaped.
  • detent projections 67 may be football- or bullet-shaped.
  • both tip 30 and lock 60 may be constructed of metal.
  • detent projections 67 may thus be compressible. That is, while detent projections 67 may typically project outward from outer surface 66 of lock 60 by a distance 110 (referring to Fig. 9 ), detent projections 67 may be compressed so as to project outward from outer surface 66 by a distance smaller than distance 110. Such compression may allow detent projections 67 to slide along inner portion 105 of lock opening surface 104 as lock 60 is inserted into lock opening 40 in a direction approximately parallel to lock rotation axis 65. Once lock 60 is fully inserted, detent projections 67 may expand and engage groove 107.
  • Such engagement may prevent lock 60 from falling out of lock opening 40.
  • detent projections may slide along groove 107, eventually further expanding and engaging detent recesses 77 of tip 30.
  • Such engagement may inhibit further rotation of lock 60.
  • Further rotation and/or removal of lock 60 may, however, be accomplished by compressing detent projections 67, thereby allowing detent projections to disengage detent recesses 77 and/or groove 107.
  • Lock 60 may be configured to receive at least part of post 23 of adapter 20.
  • lock slot 62 may have an open end 69 between two circumferential ends of skirt 63 and a closed end 68 adjacent a middle portion of skirt 63.
  • lock slot 62 may have a size and shape such that it can receive frustoconical post 23 of adapter 20.
  • the inner surface 64 of skirt 63 may be sloped so as to mate with frustoconical post 23 of adapter 20 adjacent closed end 68 of lock slot 62.
  • lock 60 may be installed in lock opening 40 with outer surface 66 of lock 60 mated to lock opening surface 104 and detent projections 67 of lock 60 engaging detent recesses 77 of tip 30.
  • open end 69 of lock slot 62 may face rearward. This position allows sliding insertion and removal of post 23 into and out of lock slot 62 through open end 69. Accordingly, this position of lock 60 may be considered an unlocked position.
  • lock 60 may be rotated about lock rotation axis 65 to a locked position.
  • the portion of lock skirt 63 adjacent closed end 68 may preclude sliding movement of post 23 relative to lock slot 62, thereby preventing sliding movement of tip 30 relative to adapter 20.
  • the locked position of lock 60 may be approximately 180 degrees from the unlocked position about lock rotation axis 65.
  • detent projections 67 of lock 60 may engage detent recesses 77 of tip 30, which may releasably hold lock 60 in the locked position.
  • lock 60 and tip 30 may be configured to provide an indication of the unlocked/locked positions.
  • lock 60 may include a triangle 111 on its head portion 80, and tip 30 may include lock/unlock indicators 112, 113 on its exterior surface 101 near lock opening 40.
  • lock indicator 112 When triangle 111 points to lock indicator 112, lock 60 may be in the locked position.
  • unlocked indicator 113 lock 60 may be in the unlocked position.
  • lock 60 may also include a tool interface 84 in head portion 80 to facilitate rotating lock 60 about lock rotation axis 65.
  • Tool interface 84 may include any type of features configured to be engaged by a tool for applying torque to lock 60 about lock rotation axis 65.
  • tool interface 84 may include a socket recess with a cross-section configured to engage a socket driver, such as a socket wrench.
  • head portion 80 defining tool interface 84 may extend at least partially through lock opening 40, and lock opening 40 may provide an access opening for a tool to engage tool interface 84.
  • ground engaging tools and the associated retainer systems of the present disclosure are not limited to the exemplary configurations described above.
  • ground engaging tool assembly 10 may employ a different number and configuration of lock openings 40, posts 23, and/or locks 60.
  • ground engaging tool assembly 10 may employ one or more pins fixed to or integrally formed with suitable support structure.
  • Certain exemplary aspects of the present disclosure may provide various alternative and/or additional configurations of retainer systems for removably attaching ground engaging tools to suitable support structure of an implement. For example, further modifications to a lock may be possible to improve the performance of or reduce costs associated with the retention system. In the following descriptions, various embodiments of the lock are disclosed.
  • Fig. 11 illustrates a lock 160 according to one exemplary embodiment.
  • Lock 160 may include an integrally formed head portion 180.
  • detent projections 167 of lock 160 may include at least partially sphere-shaped portions 182 at least partially situated within bores 189 of lock 160.
  • detent projections 167 may include elastomeric portions 183 situated within bores 189.
  • Elastomeric portions 183 may bias portions 182 outward through outer surface 188 of lock 160, but outward ends 191 of bores 189 may be swaged (i.e., bent or shaped) to prevent portions 182 from leaving bores 189.
  • elastomeric portions 183 may be springs.
  • elastomeric portions may be rubber, foam, or another type of elastic material.
  • Fig. 12 illustrates a lock 260 according to another exemplary embodiment.
  • Lock 260 may differ from lock 160 only in that at least partially sphere-shaped portions 282 may be at least partially situated within bores 289 that are open to a top surface 292 of lock 260. Such bores 289 may allow portions 282 to be installed in bores 289 before or after outward ends 291 of bores 289 are swaged.
  • Fig. 13 illustrates a lock 360 according to yet another exemplary embodiment.
  • Lock 360 may include an integrally formed head portion 380.
  • detent projections 367 of lock 360 may include at least partially sphere-shaped portions 382 at least partially situated within bores 389 of lock 360.
  • detent projections 367 may include elastomeric portions 383 situated within bores 389. Elastomeric portions 383 may bias portions 382 outward through outer surface 388 of lock 360, but jacket caps 398 may be inserted into bores 389 to prevent portions 382 from leaving bores 389.
  • jacket caps 398 may be press-fit into bores 389.
  • jacket caps 398 may be joined to bores 389 with threads.
  • jacket caps 398 may be permanently or removably joined to bores 389 in other ways (e.g., with glue).
  • elastomeric portions 383 may be springs.
  • elastomeric portions may be rubber, foam, or another type of elastic material.
  • Lock 460 may include a two-piece head portion, including a top piece 481 and a bottom piece 482, which may be joined together by pins 486. When joined together, top piece 481 and bottom piece 482 may define bores 489.
  • Detent projections 467 of lock 460 may include at least partially sphere-shaped portions 483, which may be at least partially situated within bores 489.
  • detent projections 467 may include elastomeric portions 484, which may be situated within bores 489.
  • Elastomeric portions 483 may bias portions 483 outward through outer surface 488 of lock 460, but outward ends 491 of bores 489 may include ridges 498 to prevent portions 483 from leaving bores 489.
  • elastomeric portions 484 may be springs.
  • elastomeric portions may be rubber, foam, or another type of elastic material.
  • the disclosed retainer systems and ground engaging tool assemblies may be applicable to various earth-working machines, such as, for example, excavators, wheel loaders, hydraulic mining shovels, cable shovels, bucket wheels, bulldozers, and draglines.
  • the disclosed retainer systems and ground engaging tool assemblies may protect various implements associated with the earth-working machines against wear in the areas where the most damaging abrasions and impacts occur and, thereby, prolong the useful life of the implements.
  • the disclosed configurations of various components may provide secure and reliable attachment and detachment of ground engaging tools to various earth-working implements, and may have various advantages over previous retainer systems.
  • the disclosed configurations may include fewer parts than previous retainer systems, which include bushings to hold locks in lock cavities.
  • the disclosed configurations of lock openings and locks may lack the complex shapes of previous retainer systems, simplifying their construction and reducing stress within the components.
  • the metal-on-metal contact between the disclosed detent projections and detent recesses may help retain the disclosed locks in corresponding lock openings during shipment, even in high temperatures that might distort non-metal components. The operation of the disclosed components will now be described.
  • the disclosed lock 60 is configured to mate with lock opening surface 104, which defines lock opening 40 of tip 30.
  • lock 60 is installed in lock opening 40, into which slot 103 extends, allowing passage of post 23 of adapter 20.
  • lock 60 is rotated about lock rotation axis 65 to a closed position.
  • the portion of lock skirt 63 adjacent closed end 68 may preclude sliding frustoconical portion of post 23 into or out of lock slot 62, preventing sliding movement of tip 30 relative to adapter 20.
  • detent projections 67 of lock 60 may engage detent recesses 77 of tip 30, which may releasably hold lock 60 in the locked position.
  • lock 60 is rotated from the locked position to an unlocked position to cause detent projections 77 and detent recesses 67 to disengage from one another.
  • outer surface 66 of lock 60 may slide along lock opening surface 104 of tip 30, as lock 60 rotates around lock rotation axis 65.
  • detent projections 77 and detent recesses 67 may reengage one another to releasably hold lock 60 in that rotational position.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
  • Insertion Pins And Rivets (AREA)
EP15805704.2A 2014-12-03 2015-11-24 Ground engaging tool Active EP3227498B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201462086957P 2014-12-03 2014-12-03
US201462086981P 2014-12-03 2014-12-03
US14/941,297 US9976287B2 (en) 2014-12-03 2015-11-13 Ground engaging tool
US14/941,326 US20160160475A1 (en) 2014-12-03 2015-11-13 Lock for ground engaging tool
PCT/US2015/062384 WO2016089669A1 (en) 2014-12-03 2015-11-24 Ground engaging tool

Publications (2)

Publication Number Publication Date
EP3227498A1 EP3227498A1 (en) 2017-10-11
EP3227498B1 true EP3227498B1 (en) 2019-08-21

Family

ID=59098791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15805704.2A Active EP3227498B1 (en) 2014-12-03 2015-11-24 Ground engaging tool

Country Status (7)

Country Link
EP (1) EP3227498B1 (es)
CN (1) CN107002392A (es)
AU (1) AU2015355305B2 (es)
CA (1) CA2969526C (es)
CL (1) CL2017001334A1 (es)
ES (1) ES2753613T3 (es)
RU (1) RU2698928C2 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10294638B2 (en) * 2017-08-30 2019-05-21 Caterpillar Inc. Heavy duty tip
US11124951B2 (en) * 2019-04-24 2021-09-21 Caterpillar Inc. Spring steel sleeve design
US11745581B2 (en) * 2019-10-25 2023-09-05 Caterpillar Inc. Dump body front wall heating channel
US11427989B2 (en) * 2019-11-14 2022-08-30 Caterpillar Inc. Retainer sleeve design with external ribs
WO2021170237A1 (en) * 2020-02-27 2021-09-02 Sandvik Mining And Construction Australia (Production Supply) Pty Ltd Locking assembly for a shroud for a ground engaging tool

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SU804887A1 (ru) * 1979-02-12 1981-02-15 Предприятие П/Я Р-6719 Разьемное крепежное устройство
US6374521B1 (en) * 1999-04-05 2002-04-23 Trn Business Trust Apparatus and method for coupling an excavation tooth assembly
SE0203856L (sv) * 2002-12-23 2004-02-10 Combi Wear Parts Ab Slitdelssystem för lösbar montering av slitdelar till en markberedningsmaskins verktyg
AU2007284549C1 (en) * 2006-08-16 2013-10-10 Caterpillar Inc. Ground engaging tool system
EP2248953A1 (en) * 2009-04-14 2010-11-10 Jung-Ching Ko Replacement and urging device for the bucket teeth of an engineering construction machine
JOP20200019A1 (ar) * 2011-07-14 2017-06-16 Esco Group Llc مجموعة بطانه
EP2620557B1 (en) * 2012-01-24 2021-11-10 Javier Bartolome Rodriguez Wear assembly for machinery
US9074350B2 (en) * 2013-03-15 2015-07-07 Caterpillar Inc. Retainer systems for ground engaging tools
US9328484B2 (en) * 2013-05-31 2016-05-03 Caterpillar Inc. Retainer systems for ground engaging tools

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Title
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Also Published As

Publication number Publication date
RU2017121124A3 (es) 2019-04-19
CA2969526A1 (en) 2016-06-09
ES2753613T3 (es) 2020-04-13
CL2017001334A1 (es) 2018-01-19
CN107002392A (zh) 2017-08-01
CA2969526C (en) 2023-03-21
AU2015355305B2 (en) 2020-10-29
RU2017121124A (ru) 2018-12-17
EP3227498A1 (en) 2017-10-11
AU2015355305A1 (en) 2017-06-29
RU2698928C2 (ru) 2019-09-02

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