Gm Global Technolgoy Operations, Inc.

Delphi Technologies, Inc.

Steering Solutions IP Holding Corporation

David Fredrick Hammerbacher

Roy William Heath

James Leroy Davison

Albert C Wong

Thomas C Rytlewski

Tom Cheuk-In Wong

Bruce Alan Tucker

Carl D Tarum

David R Aden

John M Andres

Kevin Mark McClendon

James Michael Shea

Jesse Kalkman

Robert Edward Beyerlein

Jerrod M Etienne

Allan Lee Dickinson

An electric power steering assembly for a steering column includes a lower assist shaft defining a first bore. The assembly also includes a needle bearing at least partially disposed within the first bore. The assembly further includes an upper assist shaft assembly defining a second bore and having a journal surface at an end thereof. The assembly yet further includes a torsion bar having a first end disposed in the first bore and a second end disposed in the second bore, the torsion bar having a torsion bar run-out that forces the journal surface to remain in contact with an inner surface of the needle bearing.

Rattle noise reducing electric power steering column assembly and method

A sliding vane pump comprising a rotor housing having a pumping chamber, a rotor in the pumping chamber having a plurality of radially disposed slots, and a plurality of sliding vanes disposed in the slots configured to extend to follow an inner wall of said pumping chamber.

Sliding vane pump

A motor vehicle hydraulic system including a power steering pump, a reservoir, a steering assist fluid motor, and a second fluid motor for a radiator cooling fan. A flow control valve remote from the power steering pump divides the total fluid flow from the power steering pump into a high flow branch and a low flow branch. Fluid circulates in the low flow branch at a substantially constant flow rate for a proportional control valve for the steering assist fluid motor and returns to the reservoir through an unrestricted tubular boss on the reservoir. Fluid in the high flow branch issues as a jet stream from a nozzle on the reservoir into a venturi passage submerged in fluid in the reservoir. The venturi passage is connected to an inlet port of the power steering pump. The jet stream aspirates fluid from the reservoir into the venturi passage. The kinetic energy of the jet stream is converted into superatmospheric pressure at the inlet port of the power steering pump to suppress cavitation. Fluid from the low flow branch dwells in the reservoir for a time duration adequate for natural release therefrom of any entrained gas bubbles.

Hydraulic system for motor vehicle

A tuner hose assembly for a motor vehicle power steering system including a flexible hose, a first flexible tuner tube inside the flexible hose having an upstream end connected to a pump, and a second flexible tuner tube inside the flexible hose having a downstream end connected to a power steering gear. A downstream end of the first flexible tuner tube is longitudinally separated from an upstream end of the second flexible tuner tube by a wave interference gap which terminates where an inner wall of the flexible hose is clamped against the upstream end of the second flexible tuner tube. The length of the second flexible tuner tube is selected, i.e. 'tuned', to attenuate higher order pump fluid-borne noise and simulates a rigid metal tube of a prior tuner hose assembly having greater overall length.

Tuner hose assembly for power steering system

Growing community of inventors

Saginaw, MI, United States of America

David Fredrick Hammerbacher