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:
Sep. 05, 2006
Filed:
Nov. 25, 2003
Henry Hsu, Aliso Viejo, CA (US);
Charles R. Bisbee, Iii, Mission Viejo, CA (US);
Michael Lars Palmer, Ladera Ranch, CA (US);
Ronald J. Lukasiewicz, Carlsbad, CA (US);
Michael W. Lindsay, Mission Viejo, CA (US);
Stephen W. Prince, Mission Viejo, CA (US);
Henry Hsu, Aliso Viejo, CA (US);
Charles R. Bisbee, III, Mission Viejo, CA (US);
Michael Lars Palmer, Ladera Ranch, CA (US);
Ronald J. Lukasiewicz, Carlsbad, CA (US);
Michael W. Lindsay, Mission Viejo, CA (US);
Stephen W. Prince, Mission Viejo, CA (US);
Ossur Engineering, Inc., Albion, MI (US);
Abstract
The present invention relates in one embodiment to magnetorheological fluids utilized in prosthetic joints in general and, in particular, to magnetorheological fluids utilized in controllable braking systems for prosthetic knee joints. Preferred magnetorheological fluids of the present invention comprises polarizable iron particles, a carrier fluid, and optionally an additive. Preferred additives include, but are not limited to functionalized carrier fluids as well as derivatized fluoropolymers. Preferred carrier fluids include, but are not limited, to perfluorinated polyethers.