John H Christ, 955 Corral Dr, Saginaw, MI 48601

4009641, Mar 1, 1977

Nov 14, 1975

5/631839

Robert P. Rohde - Saginaw MI
John H. Christ - Saginaw MI
Stanley E. Anderson - Saginaw MI

General Motors Corporation - Detroit MI

F15B 910

91375A

The piston nut of this compact steering gear telescopes over the valve assembly and into an adjuster plug at opposite ends of its stroke to provide for a foreshortened gear housing. The piston nut screw is connected to the valve assembly and the input stub shaft by a special retainer means to prevent their axial separation to maintain the integrity of the mechanical drive of the piston nut. The adjuster plug provides a thrust bearing adjustment, a closure for the gear and a travel stop for the piston nut when telescoping therein. The stepped bore in the housing provides for improved assembly of the parts from one end of the housing through the opening for the adjuster plug.

4373871, Feb 15, 1983

May 4, 1981

6/260015

John H. Christ - Saginaw MI

General Motors Corporation - Detroit MI

F04B 4908
F01C 1908

417310

A vane type compact pump for use in a power steering system having a remote reservoir includes a substantially cylindrical housing with a central cylindrical cavity. The cavity has a large opening at one end of the housing and a shaft opening at the other end. A pressure plate, cam, rotor and vane assembly and a thrust plate are axially aligned and positioned in the cavity with the thrust plate being adjacent to and closing the large open end of the cavity. A locking ring engages the housing and limits the axial movement of the thrust plate toward the large open end. A drive shaft is rotatably supported in a bearing in the housing and in a bearing in the thrust plate. The drive shaft is drivingly connected with the rotor intermediate the bearing supports. The fluid discharge from the cam rotor and vane assembly passes through the pressure plate to a space intermediate the pressure plate and housing and then through a flow controlling system which permits a predetermined volume of hydraulic fluid to be delivered to the power steering system. The remaining fluid is redirected to the cylindrical cavity.