Susan M Graham

US Patent:

20220195550, Jun 23, 2022

Filed:

Dec 23, 2020

Appl. No.:

17/133251

Inventors:

- Peoria IL, US
Lindsey S. Cavanaugh - Chillicothe IL, US
Thomas Marshall Congdon - Dunlap IL, US
Susan Marie Graham - Morton IL, US
Tianjun Liu - Edwards IL, US
Mark David Veliz - Metamora IL, US
Thomas John Yaniak - Peoria IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

C21D 9/04
C21D 8/00
B62D 55/205
C21D 6/00
C21D 1/84
C21D 7/13
C22C 38/02
C22C 38/04

Abstract:

An example track shoe, cutting edge, or other component of a machine is formed in a heated process, such as hot-rolling followed by air-hardening. The air-hardening process involves cooling the component by flowing air over the component (e.g., air cooling), such that the component is cooled at a controlled rate. During the air-cooling process, such as in the range of about 250 C. to about 1100 C., the component may be machined, such as by shearing, punching, drilling, etc. The machining may form the final shape of the component. As the air-hardening process is completed, and the component approaches room temperature, the component may have at least 5% bainitic crystal composition, and as high as greater than 80% bainitic crystal composition, resulting in relatively high hardness and fracture toughness. The final track shoe may have a hardness between about 40 HRC and 55 HRC.

US Patent:

20210039728, Feb 11, 2021

Filed:

Aug 7, 2019

Appl. No.:

16/534866

Inventors:

- Deerfield IL, US
Roger L. RECKER - Dunlap IL, US
Robert J. PICKERILL - Peoria IL, US
Susan M. GRAHAM - Morton IL, US
Scott KEELE - Germantown Hills IL, US
Thomas J. YANIAK - Washington IL, US

Assignee:

Caterpillar Inc. - Deerfield IL

International Classification:

B62D 55/15
B62D 55/12
B62D 55/21

Abstract:

A bushing for a track assembly, according to one or more embodiments, includes: a tubular bushing substrate having a longitudinal length and an outer surface; and at least one white iron member fixed to the outer surface of the tubular bushing substrate.

US Patent:

20210040707, Feb 11, 2021

Filed:

Oct 22, 2020

Appl. No.:

17/077159

Inventors:

- Peoria IL, US
Thomas Marshall Congdon - Dunlap IL, US
Susan Marie Graham - Morton IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

E02F 3/815

Abstract:

An adapter board defines an upper adapter board attachment portion, and a lower tool bit attachment portion. The upper adapter board attachment portion includes a first peak surface and a second peak surface, the first peak surface and the second peak surface forming a first valley between the first peak surface and the second peak surface.

US Patent:

20190316319, Oct 17, 2019

Filed:

Apr 13, 2018

Appl. No.:

15/952421

Inventors:

- Peoria IL, US
Thomas Marshall Congdon - Dunlap IL, US
Susan Marie Graham - Morton IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

E02F 3/815

Abstract:

A blade assembly comprises a moldboard defining an upper moldboard free end and a lower moldboard free end, the lower moldboard free end defining a lower curved mounting surface, and an adapter board defining an upper adapter board attachment portion, and a lower tool bit attachment portion. The upper adapter board attachment portion may include a first peak surface and a second peak surface, the first peak surface and the second peak surface forming a first valley therebetween and being configured to contact the lower curved mounting surface.

US Patent:

20170130423, May 11, 2017

Filed:

Nov 9, 2015

Appl. No.:

14/936322

Inventors:

- Peoria IL, US
Susan GRAHAM - Peoria IL, US
Bart A. FISHER - Roanoke IL, US

Assignee:

CATERPILLAR INC. - Peoria IL

International Classification:

E02F 3/815
E02F 9/28

Abstract:

A wear member for attachment to a surface of a machine is provided, the wear member a body having an outer layer and a base layer. The outer layer including a plurality of channels formed in an outer surface. The base layer is attached to an inner surface of the outer layer. The base layer is divided into a plurality of base layer pieces, each of the plurality of base layer pieces including at least one interfacing edge. The plurality of base layer pieces are assembled together such that each interfacing edge of each of the plurality of base layer pieces is opposite an interfacing edge of another of the plurality of base layer pieces so as to define at least one gap therebetween.