Dennis R Shookman

US Patent:

6431008, Aug 13, 2002

Filed:

Oct 31, 2000

Appl. No.:

09/703128

Inventors:

Thomas E. Oertley - Dunlap IL
Dennis R. Shookman - Washington IL
Jin Suzuki - Peoria IL
Daniel L. Mikrut - Peoria IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G01N 308

US Classification:

73828

Abstract:

A method and apparatus for determining a tension of a track on an earthworking machine, the track having a front catenary portion and a rear catenary portion. The method and apparatus includes determining a direction of motion of the earthworking machine, determining a value of tension of the front catenary portion in response to determining the direction of motion of the earthworking machine to be in a forward direction, and determining a value of tension of the rear catenary portion in response to determining the direction of motion of the earthworking machine to be in a reverse direction.

US Patent:

6846051, Jan 25, 2005

Filed:

Feb 25, 2002

Appl. No.:

10/082752

Inventors:

Michael S. Bottom - Heyworth IL, US
Thomas M. Hoefft - Dunlap IL, US
Jeff A. Jensen - Dunlap IL, US
Jason L. Kupferschmid - Franklin NC, US
Eric A. Mathewson - Peoria IL, US
Thomas E. Oertley - Dunlap IL, US
John M. Plouzek - Peoria IL, US
Dennis R. Shookman - Washington IL, US

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

B62D 5512
F16G 1302
B65D 5300

US Classification:

305202, 305200, 305105

Abstract:

Joint assemblies are useful for connecting one structure to another structure. When the various structures deflect or bend, edge loading occurs therebetween. The subject joint assembly includes a pin positioned between a first and second structure. An insert is free floating positioned around the pin for contacting either of the first or second structures. A crown shaped surface is utilized on the insert at a substantially central location therealong. The crown shaped surface directs forces to the center of the insert to reduce edge loading.

US Patent:

7997659, Aug 16, 2011

Filed:

Sep 25, 2008

Appl. No.:

12/238372

Inventors:

Thomas E. Oertley - Peoria IL, US
Gregory J. Kaufmann - Metamora IL, US
Robert L. Meyer - Metamora IL, US
Dennis R. Shookman - Washington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

E21B 10/00

US Classification:

299106, 175364

Abstract:

A rotary cutter for a tunnel boring machine or similar machine has a cutter ring mounted to a hub. The hub is mounted on a shaft. A sleeve bearing system is positioned between the hub and the shaft for supporting the hub on the shaft and allowing relative rotation. A duo-cone seal assembly is positioned between the hub and the shaft to seal out contaminants from the sleeve bearing system. An oil gallery with lubricating oil for lubricating the sleeve bearing system is provided in the shaft.

US Patent:

20130002011, Jan 3, 2013

Filed:

Jun 30, 2011

Appl. No.:

13/173382

Inventors:

Robert Lee Meyer - Metamora IL, US
Mircea Dumitru - Washington IL, US
Ajay Dnyandeo Yadav - Peoria IL, US
Mark Steven Diekevers - Metamora IL, US
Dennis Robert Shookman - Washington IL, US

International Classification:

B62D 55/21

US Classification:

305202

Abstract:

A chain link for a track of a mobile machine includes a pin, and a retention ring coupled to the pin at a mechanical joint. A portion of the retention ring fills imperfections of the pin at the joint and the pin remains substantially metallurgically separate from the retention ring. The chain link also includes a first track link defining a hole having a step. The first track link is mounted on the pin such that the retention ring is disposed substantially within the step.

US Patent:

45642052, Jan 14, 1986

Filed:

Sep 30, 1982

Appl. No.:

6/638445

Inventors:

Dennis R. Shookman - Oreana IL
Vergil P. Hendrickson - Decatur IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

B60R 302

US Classification:

280166

Abstract:

In a flexible step assembly (10) for a construction vehicle (14) it is desirable to provide a step assembly (10) that is durable enough to withstand impact from uneven terrain and obstacles encountered in vehicle operation and that will also provide a stable platform from which to mount and dismount the vehicle. The flexible step assembly (10) of this invention is suspended from a vehicle (14) by very durable chain assemblies (34) which have a link construction (38,64) that will enable the chain assembly (34) to lock-up to resist movement in a lateral direction upon application of an operator's weight upon a suspended step member (82).

US Patent:

57115869, Jan 27, 1998

Filed:

Jun 3, 1996

Appl. No.:

8/657253

Inventors:

Peter W. Anderton - Peoria IL
Lawrence J. Cobb - Peoria IL
Joseph D. Groves - Peoria IL
Dennis R. Shookman - Washington IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

B62D 5521

US Classification:

305201

Abstract:

A track bushing for use with a track assembly of a track-type machine includes a generally cylindrical member having ends adapted for mounting in opposing end portions of a track link and a longitudinal bore extending between the ends. The inner surface of the bore defines first and second load bearing portions at each of the ends. Each of the first load bearing portions define a first conical surface tapering radially inward from each of the ends at a first angle, and each of the second load bearing portions define a second conical surface tapering radially inward from each of the first conical surfaces at a second angle. In the bushing's assembled state, the first angle is in the range of 0. 09 degrees to 0. 18 degrees and the second angle is in the range of -0.