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:
Oct. 09, 2012
Filed:
Sep. 16, 2009
Prabhakar Marur, Bangalore, IN;
Prabhakar Marur, Bangalore, IN;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A magnetorheological (MR) fluid is described herein. The MR fluid includes a plurality of magnetizable particles having a particle density. The fluid also includes a carrier fluid having a fluid density, and the plurality of magnetizable particles is dispersed within the carrier fluid. A portion of the plurality of magnetizable particles has a particle density that is substantially the same as the fluid density. The MR fluid may include a plurality of magnetizable particles having an outer shell of a magnetizable material and a hollow core. The MR fluid may also include a plurality of magnetizable particles having an outer shell of a magnetizable material and a solid core. The MR fluid may include a plurality of magnetizable particles having a matrix and a plurality of sub-particles embedded therein. The core or matrix of these particles may include a ceramic, glass or polymer, or a combination thereof. The magnetizable material may include magnetizable metals, metal alloys and various ferrites, such as those comprising Co, Fe, Mg, Mn, Ni, or Zn, or a combination thereof.