Steven M Robinson

US Patent:

6390258, May 21, 2002

Filed:

Jul 27, 2001

Appl. No.:

09/917297

Inventors:

Randall L. Hofmann - Centerville OH
Steven R. Robinson - Franklin OH
Michael W. Hurtt - Waynesville OH

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F16F 936

US Classification:

18832217, 18832216

Abstract:

A guide assembly for a rod of a motor vehicle strut comprises a rod guide, a seal cover, and a retainer. The seal cover engages the rod guide, and defames an area therebetween. The retainer is engaged with the seal cover. A first O-ring is disposed between the seal cover and the rod guide, and a second O-ring is disposed between the rod guide and the retainer.

US Patent:

6085877, Jul 11, 2000

Filed:

Jun 26, 1998

Appl. No.:

9/105334

Inventors:

Steven Ray Robinson - Franklin OH
James Louis Lopez - Dayton OH
Donelle Robert Mills - Dayton OH
Gary Lee Johnston - Pleasant Hill OH
Richard Edward Longhouse - Dayton OH
Michael Leslie Oliver - Xenia OH

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16F 934

US Classification:

18832215

Abstract:

A damper provides tunable variable rates in both extension and compression operation. A piston is carried in a cylinder tube separating out extension and compression chambers. The piston carries a first valving assembly that is tuned to provide a first damping level when fluid flows through the piston from the extension chamber to the compression chamber and a second valving assembly that is tuned to provide a second damping level when fluid flows through the piston from the compression chamber to the extension chamber. A control valve assembly is mounted to move with the piston. When the control valve assembly is closed, fluid flow between the compression and extension chamber flows substantially only through the first and second valving assemblies and when the control valve is open at least some fluid flows between the compression and extension chambers through a secondary valve assembly without passing through the first and second valving assemblies. The secondary valve assembly is mounted to move with the piston and includes a third valving assembly that is tuned to provide a third damping level, and includes a fourth valving assembly that is tuned to provide a fourth damping level. When the control valve is open, fluid flow from the extension chamber to the compression chamber passes through both the first valving assembly and the third valving assembly wherein performance of the damper is determined by the first and third valving assemblies in parallel, and fluid flow from the compression chamber to the extension chamber passes through both the second valving assembly and the fourth valving assembly wherein performance of the damper is determined by the second and fourth valving assemblies in parallel.