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:
Aug. 23, 2005
Filed:
Jun. 17, 2003
Mark A. Golden, Washington, MI (US);
John C. Ulicny, Oxford, MI (US);
Keith S. Snavely, Sterling Heights, MI (US);
Anthony L. Smith, Troy, MI (US);
Mark A. Golden, Washington, MI (US);
John C. Ulicny, Oxford, MI (US);
Keith S. Snavely, Sterling Heights, MI (US);
Anthony L. Smith, Troy, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including 10 to 14 wt % of a hydrocarbon-based liquid, 86 to 90 wt % of bimodal magnetizable particles, and 0.05 to 0.5 wt % fumed silica.