David F Hammerbacher

US Patent:

6497557, Dec 24, 2002

Filed:

Dec 27, 2000

Appl. No.:

09/748486

Inventors:

David R. Aden - Saginaw MI
Thomas C. Rytlewski - Auburn MI
Jerrod M. Etienne - El Paso TX
David Fredrick Hammerbacher - Saginaw MI
Bruce Alan Tucker - Brighton MI
Roy William Heath - Midland MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F04B 2308

US Classification:

417 87, 418 15, 417302

Abstract:

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.

US Patent:

54957117, Mar 5, 1996

Filed:

Dec 7, 1994

Appl. No.:

8/350573

Inventors:

Jesse Kalkman - Saginaw MI
Roy W. Heath - Davisburg MI
David F. Hammerbacher - Saginaw MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 3102

US Classification:

60469

Abstract:

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.

US Patent:

58028480, Sep 8, 1998

Filed:

Aug 28, 1997

Appl. No.:

8/919517

Inventors:

Kevin Mark McClendon - Saginaw MI
James Leroy Davison - Freeland MI
Robert Edward Beyerlein - Saginaw MI
Tom Cheuk-In Wong - Saginaw MI
Allan Lee Dickinson - Saginaw MI
Albert Cheuk-Yin Wong - Saginaw MI
Carl David Tarum - Saginaw MI
James Michael Shea - Saginaw MI
David Fredrick Hammerbacher - Saginaw MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 3102

US Classification:

60426

Abstract:

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.