David Thomas Givan

US Patent:

42950694, Oct 13, 1981

Filed:

Apr 17, 1978

Appl. No.:

5/897109

Inventors:

David E. Givan - Anderson IN
Charles R. Ashton - Middletown IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H02K 700

US Classification:

310 67R

Abstract:

A two piece armature shaft for a vehicle starter motor comprises a hollow tubular member with an open end and a portion being adapted to receive armature core laminations, said portion possibly being of greater diameter than the open end. The armature shaft further comprises a solid cylindrical member provided with spiral spline grooves for engagement with the normal clutch and pinion drive assembly, the solid cylindrical member being received coaxially in the open end of the tubular member with portions of the open end being staked into the spline grooves to combine the members into one shaft, the portions of the open end not so staked providing an axial stop for the clutch and pinion drive assembly.

US Patent:

45733643, Mar 4, 1986

Filed:

Aug 15, 1984

Appl. No.:

6/640939

Inventors:

David E. Givan - Anderson IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02N 1506

US Classification:

74 7E

Abstract:

An in-line gear reduction starter drive for driving a pinion from the armature of an electric cranking motor. The drive utilizes a single central shaft that is directly connected to the armature core of the cranking motor armature and the pinion is supported by the shaft. The shaft has an integral gear which forms the sun gear of a planetary gear set. The sun gear drives planet gears which in turn drive a driven member that is rotatably supported by the shaft and which drives the pinion.