Robert E Langley

US Patent:

54203953, May 30, 1995

Filed:

Jun 28, 1993

Appl. No.:

8/084650

Inventors:

Bruce E. Hyllberg - Gurnee IL
Robert G. Langley - Burlington WI

Assignee:

American Roller Company - Bannockburn IL

International Classification:

H05B 300
H05B 314
G03G 1520

US Classification:

219470

Abstract:

A thermal conductive roller for use in copying machines, steam-heated and induction-heated applications includes a ceramic heating layer formed by plasma spraying a ceramic material. Conductive bands are provided for supplying electrical current to portions of the ceramic heating layer. In one embodiment, heat is generated by passing current through a length of the roller between two narrow bands. In a second embodiment, heat is generated by directing current radially from the core of the roller to an outer ground layer through wide bands corresponding to heating zones for the roller. In a third embodiment, the ceramic layer is inside the steel core.

US Patent:

59904585, Nov 23, 1999

Filed:

Mar 3, 1998

Appl. No.:

9/033815

Inventors:

Bruce E. Hyllberg - Gurnee IL
Robert G. Langley - Burlington WI

Assignee:

American Roller Company - Union Grove CA

International Classification:

B21B 2706
G03G 1520
H01R 1333
H05B 303

US Classification:

219469

Abstract:

An electrical contact assembly for a roller (10) having at least one single-bevel end portion (13) has a first electrical contact formed by a thermally sprayed band (29) of a nickel alloy, a second electrical contact (30) formed by an annular contact structure (57, 37, 38, 30) assembled to the roller (10) and a bridging contact formed by an extension coil spring (33) which extends around the tapered end (24) of the roller (10) in a location where it will make bridging contact between the first electrical contact (29) and the second electrical contact (30) and provide spring pressure to maintain such contact.