Richard L Richardson

US Patent:

20060245888, Nov 2, 2006

Filed:

Mar 23, 2005

Appl. No.:

11/087798

Inventors:

Barry Dietz - Wyoming IL, US
Frederick Spiegel - East Peoria IL, US
Richard Richardson - East Peoria IL, US
Kenneth Hoefling - Kickapoo IL, US
Jim Etzel - Alexis IL, US
Christopher Green - Peoria IL, US

International Classification:

B60P 3/12

US Classification:

414563000

Abstract:

In order to reduce production and maintenance costs, it is desirable that application-specific machines, such as pipelayers, include common parts with standard track-type work machines, such as a counterpart bulldozer. According to the present disclosure, a pipelayer is assembled by attaching a winch frame and a boom frame to a first and second side of a chassis, respectively. The attached boom frame and the attached winch frame are interconnected by extending a cross-bar between the boom and winch frames.

US Patent:

43280498, May 4, 1982

Filed:

Mar 20, 1979

Appl. No.:

6/084000

Inventors:

Richard W. Richardson - Dunlap IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

B23K 700

US Classification:

148 9R

Abstract:

A torch height sensing apparatus (10) is provided for generating information representative of the spacing between a cutting torch (12) and an associated workpiece (14). The apparatus (10) drives a preselected current from the torch (12) through the torch flame to the workpiece (14) so that electrons flow from the workpiece (14) through the flame to the torch (12). The output current biases the flame into the linear region of the preselected voltage-current characteristic at a positive torch (12) to workpiece (14) current. Biasing the torch (12) for positive current flow from the torch (12) to the workpiece (14) insures that flame height sensing occurs in the positive linear region where the sensitivity is greatest due to the availability of thermally emitted electrons at the workpiece.