The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Nov. 02, 2009
Robert H. Marjoram, Holly Springs, NC (US);
Stephen F. Hildebrand, Apex, NC (US);
Douglas E. Ivers, Cary, NC (US);
Gregory Ericksen, Cary, NC (US);
William J. Mcmahon, Chapel Hill, NC (US);
Kenneth A. St. Clair, Cary, NC (US);
Robert H. Marjoram, Holly Springs, NC (US);
Stephen F. Hildebrand, Apex, NC (US);
Douglas E. Ivers, Cary, NC (US);
Gregory Ericksen, Cary, NC (US);
William J. McMahon, Chapel Hill, NC (US);
Kenneth A. St. Clair, Cary, NC (US);
Lord Corporation, Cary, NC (US);
Abstract
A magneto-rheological fluid damper includes a damper body having a reservoir for a magneto-rheological fluid, a piston rod, a piston rod guide disposed within the damper body, where the piston rod guide has a passage therein for receiving the piston rod. The magneto-rheological fluid damper further includes at least a first piston rod seal and at least a second piston rod seal arranged to seal between the piston rod guide and the piston rod. The magneto-rheological fluid damper further includes a fluid chamber defined between the piston rod guide and the piston rod, the fluid chamber being in communication with the reservoir. The magneto-rheological fluid damper further includes a piston rod guide filter arranged in a communication path between the fluid chamber and the reservoir to filter particulates out of the magneto-rheological fluid entering the fluid chamber. The magneto-rheological fluid damper further includes an accumulator arranged between the piston rod guide and the damper body.