Steven L Groth

US Patent:

20080269981, Oct 30, 2008

Filed:

Apr 25, 2007

Appl. No.:

11/790310

Inventors:

Jason Pagnotta - Sahuarita AZ, US
Steven Groth - Morton IL, US
Ted Kingham - Metamora IL, US
Kenneth Stratton - Dunlap IL, US

International Classification:

G06F 19/00

US Classification:

701 35

Abstract:

A control system for a mobile excavation machine is disclosed. The control system may include a ground engaging work tool, a sensor and a controller. The sensor may be configured to sense a parameter indicative of a current operating condition of the mobile excavation machine and to generate a signal in response thereto. The controller may be in communication with the sensor and configured to receive the signal and calculate a current efficiency value based on the received signals. The controller may be further configured to associate the current efficiency value with a current operating mode of the machine and categorize and store the current efficiency value based on the current operating mode.

US Patent:

40224392, May 10, 1977

Filed:

Jul 11, 1975

Appl. No.:

5/595204

Inventors:

Steven L. Groth - Armington IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

B28C 704
B07B 700

US Classification:

259165

Abstract:

An improved fibrous concrete batch forming system. The system includes a conveyor for introducing concrete ingredients in solid form into a mixer or the like together with apportioning devices for apportioning large aggregate, cement and sand onto the conveyor. An apportioning device is also provided for apportioning fibrous reinforcing material onto the conveyor. A hopper or the like serves as a source of fibrous reinforcing material. A separator receives fiber from the hopper and separates the same into balls of fiber and substantially individual fibers. Associated with the separator is a device for directing only substantially individual fibers from the separator to the fiber apportioning device.

US Patent:

55512658, Sep 3, 1996

Filed:

Apr 28, 1995

Appl. No.:

8/431698

Inventors:

Ronald H. Garman - Pekin IL
Stephen C. Garnett - Princeville IL
Steven L. Groth - Morton IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G05G 528

US Classification:

70177

Abstract:

The connecting linkage between a control lever and a control valve that controls the operation or the manipulation of an implement of a construction machine is often complex and difficult to properly adjust. The present invention provides a restraint mechanism for the control lever 10 to maintain its position in a neutral condition with respect to the control valve. A first plate 42 is pivotally mounted to a base plate 22 on the console of the machine and is movable to a first position to engage the control lever 10 and establish a neutral position. A second plate 58 is utilized to selectively secure the position of the first plate with respect to the control lever while the proper connections and adjustments are made to the linkage arrangements connecting the control lever 10 and the control valve to synchronize their respective neutral positions.

US Patent:

56829558, Nov 4, 1997

Filed:

Sep 6, 1996

Appl. No.:

8/707830

Inventors:

Steven L. Groth - Morton IL
Richard A. Arstein - Sahuarita AZ
Randall A. Harlow - Brimfield IL
David P. Smith - Joliet IL
Richard J. Skiba - Peoria IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

C02F 376
E02F 385

US Classification:

172811

Abstract:

A blade control system includes a directional control valve, a fluid regeneration valve and a selector valve for selectively controlling fluid flow between a pump and first and second hydraulic cylinders and between the cylinders. With the valves positioned at preselected operative positions, pressurized fluid from the pump is directed to the head end chamber of the first cylinder, fluid expelled from the rod end chamber of the first cylinder is diverted to the head end chamber of the second cylinder, and fluid expelled from the rod end chamber of the second cylinder is combined with the fluid being directed to the head end chamber of the first cylinders to provide two stages of fluid regeneration for increasing the extension speed of the cylinder.

US Patent:

55950914, Jan 21, 1997

Filed:

Apr 28, 1995

Appl. No.:

8/430973

Inventors:

Ronald H. Garman - Pekin IL
Stephen C. Garnett - Princeville IL
Steven L. Groth - Morton IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G05G 100

US Classification:

74523

Abstract:

A restraint mechanism for a control lever 10 of a construction machine maintains a control lever's position in a neutral condition with respect to a control valve. A first plate 34 is pivotally mounted to a base plate 20 on the console of the machine and is movable to a first position to engage the control lever 10 and establish a neutral position. A second plate 48 is utilized to selectively secure the position of the first plate with respect to the control lever while the proper connections and adjustments are made to the linkage arrangements connecting the control lever 10 and the control valve to synchronize their respective neutral positions.