公开(公告)号：US20210237812A1

公开(公告)日：2021-08-05

申请号：US16780252

申请日：2020-02-03

Applicant: Caterpillar Inc.

Inventor： David Jennings Hakes ,  William P. Shoemaker ,  Lewis Clinton Hunt

IPC: B62D55/125 ,  B62D55/10 ,  B62D55/30

Abstract: A vertical idler adjuster includes a cam assembly having a cam supported in an adjuster frame for rotation about a cam axis, and an idler support surface having a vertical location that is adjusted relative to the adjuster frame when the cam is rotated. The cam assembly includes a screw linkage having a first set of teeth fixed to rotate with the cam, a drive shaft, and a second set of teeth on the drive shaft and in mesh with the first set of teeth such that rotation of the drive shaft rotates the cam to adjust a vertical position of an idler in an undercarriage system.

公开(公告)号：US20210039729A1

公开(公告)日：2021-02-11

申请号：US16537118

申请日：2019-08-09

Applicant: Caterpillar Inc.

Inventor： David Jennings Hakes

IPC: B62D55/15 ,  B62D55/10 ,  B62D55/30 ,  B62D55/084

Abstract: An undercarriage system for a track-type machine includes an idler height adjustment system having piston assemblies supported in a frame, in opposition to one another, to contact upper and lower sides of an idler support element or block. A conduit connects the piston assemblies and has therein a fluid exchange valve adjustable to an open position where a flowable material such as grease is exchanged through the conduit between the piston assemblies, and a closed position where fluid connection between the piston assemblies is blocked and idler height is fixed.

公开(公告)号：US20180319446A1

公开(公告)日：2018-11-08

申请号：US15943850

申请日：2018-04-03

Applicant: Caterpillar Inc.

Inventor： Gustavo Acosta ,  David Jennings Hakes ,  Benoit Abello ,  Benjamin Isaac Jones ,  Udo Nott

IPC: B62D55/20 ,  B62D55/21 ,  B62D55/26 ,  B62D55/14

CPC classification number: B62D55/202 ,  B62D55/14 ,  B62D55/21 ,  B62D55/26

Abstract: A track chain assembly comprises a plurality of interlocking track chain members wherein each track chain member defines a track chain traveling direction, a lateral direction perpendicular to the track chain traveling direction, and includes a shoe member defining a shoe width along the lateral direction; and a first track pad member defining a first track pad maximum width along the lateral direction, and a second track pad member defining a second maximum track pad width along the lateral direction, wherein a ratio of either track pad maximum widths to the shoe member width ranges from 1:4 to 3:4.

公开(公告)号：US12292337B2

公开(公告)日：2025-05-06

申请号：US18207049

申请日：2023-06-07

Applicant: Caterpillar Inc.

Inventor： Aaron Michael Tetzloff ,  Eric J Johannsen ,  David Jennings Hakes

IPC: G01K1/024 ,  B62D55/092 ,  B62D55/24 ,  G01K1/14

Abstract: Overheating of the rollers in a track on mobile equipment can result in failure of the track. Accordingly, embodiments are disclosed for a temperature monitoring device that can be installed within an oil fill hole of each roller. Each temperature monitoring device may monitor the oil temperature within a respective roller, and communicate that oil temperature or other temperature indication to a controller. The controller may alert a human operator or another system when the temperature of a roller exceeds a predefined threshold that is indicative of overheating.

公开(公告)号：US12233969B2

公开(公告)日：2025-02-25

申请号：US17372120

申请日：2021-07-09

Applicant: Caterpillar Inc.

Inventor： Eric J Johannsen ,  David Jennings Hakes

IPC: B62D55/15 ,  B62D55/20

Abstract: A ground-engaging track system includes a center tread idler having an inner surface defining an idler axis of rotation, and an outer tread surface. The ground-engaging track system further includes a track contacted by the idler between parallel track chains and defining a track pitch dimension. The outer tread surface defines an outer diameter dimension, and a ratio of the track pitch dimension to the outer diameter dimension is between 28% and 37%. The outer diameter dimension may be one of the outer diameters of Table 1. The idler and track contact during service at fixed bushing-idler contact locations so as to bias wearing away material of the idler to form pockets imparting a sprocketed configuration to the idler during service.

公开(公告)号：US11667341B2

公开(公告)日：2023-06-06

申请号：US16713674

申请日：2019-12-13

Applicant: Caterpillar Inc.

Inventor： David Jennings Hakes

IPC: B62D55/20

CPC classification number: B62D55/20

Abstract: A ground-engaging track system includes a track having a first track chain and a second track chain, and an idler having pockets formed in an outer idler rim to receive inboard rail protrusions on track links in the first track chain and the second track chain. The inboard rail protrusions project from an inboard link side, and a central pad of an upper rail surface in the track link includes an anti-scalloping bump-out formed on the inboard rail protrusion.

公开(公告)号：US10889342B2

公开(公告)日：2021-01-12

申请号：US15943838

申请日：2018-04-03

Applicant: Caterpillar Inc.

Inventor： Gustavo Acosta ,  David Jennings Hakes ,  Benoit Abello ,  Benjamin Isaac Jones ,  Udo Nott

IPC: B62D55/20 ,  B62D55/26 ,  B62D55/21 ,  B62D55/14

Abstract: A track chain member comprises a shoe member, and a first rail member extending from the shoe member, wherein the first rail member defines a track chain traveling direction and a lateral direction generally perpendicular to track chain traveling direction, a first support surface extending generally in both the track chain traveling direction and the lateral direction defining an outer lateral extremity, and a first crest shaped member disposed laterally adjacent the outer lateral extremity of the first support surface.

公开(公告)号：US11702157B2

公开(公告)日：2023-07-18

申请号：US17145878

申请日：2021-01-11

Applicant: Caterpillar Inc.

Inventor： Gustavo Acosta ,  David Jennings Hakes ,  Benoit Abello ,  Benjamin Isaac Jones ,  Udo Nott

IPC: B62D55/20 ,  B62D55/21 ,  B62D55/14 ,  B62D55/26

CPC classification number: B62D55/202 ,  B62D55/21 ,  B62D55/14 ,  B62D55/20 ,  B62D55/26

Abstract: A track chain assembly comprises a plurality of interlocking track chain members wherein each track chain member defines a track chain traveling direction, a lateral direction perpendicular to the track chain traveling direction, and includes a shoe member defining a shoe width along the lateral direction; and a first track pad member defining a first track pad maximum width along the lateral direction, and a second track pad member defining a second maximum track pad width along the lateral direction, wherein a ratio of either track pad maximum widths to the shoe member width ranges from 1:4 to 3:4. The first and the second track pad members each include a first projection disposed at one lateral extremity of the first track pad member and a second projection disposed at another lateral extremity of the second track pad member.

公开(公告)号：US11654983B2

公开(公告)日：2023-05-23

申请号：US16436209

申请日：2019-06-10

Applicant: Caterpillar Inc.

Inventor： Benoit Abello ,  Paul Palthey-Glomeau ,  Brian Loeffler ,  David Jennings Hakes

IPC: B62D55/15 ,  F16C17/04 ,  F16C33/12 ,  F16C33/76 ,  B62D55/14

CPC classification number: B62D55/15 ,  B62D55/14 ,  F16C17/045 ,  F16C33/122 ,  F16C33/761

Abstract: A sealed and lubricated rotatable track engaging element includes a roller and a roller shaft extending through the roller to support the roller for rotation about a major axis. A first thrust surface is fixed relative to the roller, and a second thrust surface is fixed relative to the roller shaft. A seal cavity extends between the roller and the roller shaft and is formed in part by each of the first thrust surface and the second thrust surface, and a thrust washer stack is within the seal cavity and trapped between the first thrust surface and the second thrust surface. The thrust washer stack includes an inner thrust washer contacting the roller to rotate at a first fractional speed of a speed of rotation of the roller, and an outer thrust washer contacting the inner thrust washer and the collar to rotate at a second fractional speed that is less than the first fractional speed.

公开(公告)号：US20230083649A1

公开(公告)日：2023-03-16

申请号：US17477042

申请日：2021-09-16

Applicant: Caterpillar Inc.

Inventor： David Jennings Hakes ,  Eric James Johannsen

IPC: B62D55/096 ,  B62D55/15 ,  B62D55/10

Abstract: A roller mounting assembly for a ground-engaging track system includes a frame, and a roller block coupled to the frame and including a shaft support surface extending through the roller block. The roller mounting assembly further includes a damper resiliently deformable, relative to the roller block, to dampen loads transmitted between the roller block and the frame. Embodiments of a roller block assembly and a damping shim assembly are also disclosed.