Steven M Shaffer

US Patent:

59474580, Sep 7, 1999

Filed:

Jul 14, 1997

Appl. No.:

8/891777

Inventors:

Larry K. Rhodes - Pekin IL
Steven M. Shaffer - Peoria IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F16F 500

US Classification:

26714014

Abstract:

An apparatus for an active suspension system provides independent control of each adjustable spring rate mechanism. Ride height, spring rate, and oscillation control are achieved with the use of transducers that send signals to a controller. The controller receives the signals and responsively generates signals to adjust pressure and flow between an accumulator and the adjustable spring rate mechanism.

US Patent:

58486399, Dec 15, 1998

Filed:

Jan 24, 1997

Appl. No.:

8/788682

Inventors:

Edward E. Flesburg - Peoria IL
Raymond D. Stratton - Peoria IL
Steven M. Shaffer - Peoria IL
Douglas B. Penney - Waterford WI

Assignee:

Caterpillar, Inc. - Peoria IL
Modine Manufacturing Company - Racine WI

International Classification:

F28D 716

US Classification:

165176

Abstract:

A heat exchanger includes a first header and tank assembly having an inlet port and an outlet port. First and second tubes are included, each tube in fluid communication with the first header and tank assembly and with the other tube. An elastomeric baffle is disposed in the first header and tank assembly to substantially prevent fluid flow between the inlet port and the outlet port except through the first and second tubes.

US Patent:

20150001912, Jan 1, 2015

Filed:

Jul 1, 2013

Appl. No.:

13/932273

Inventors:

- Houston PA, US
TODD WILLIAM WAMPLER - Elizabeth PA, US
ROGER LEE O'QUINN - Blacksburg VA, US
ESTEL OWENS - Washington PA, US
STEVEN MURRAY SHAFFER - Sparland IL, US

Assignee:

Caterpillar Global Mining America, LLC - Houston PA

International Classification:

E21B 21/00
E21C 25/00

US Classification:

299 813

Abstract:

A continuous mining machine may include a stationary boom member, a stationary gear and bearing housing attached to the boom member, and a cutter drum assembly rotatably mounted on the stationary gear and bearing housing. Cutting elements and spray nozzles may be mounted on the rotatable cutter drum assembly. The spray nozzles may be configured to direct liquid spray at a mine face as mine material is dislodged by rotation of the cutter drum assembly and contact of the cutting elements with the mine face. Stationary liquid passageways may be provided through the gear and bearing housing, and rotatable liquid passageways may be provided through the rotatable cutter drum assembly and configured to convey liquid to the spray nozzles. A liquid distribution cavity may be defined within the cutter drum assembly between two labyrinth-type, non-contacting seal assemblies, the liquid distribution cavity configured to convey liquid from the stationary liquid passageways to the rotatable liquid passageways and to the spray nozzles.