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:
May. 03, 2005
Filed:
Nov. 06, 2002
K. Andrew Kintz, Apex, NC (US);
Teresa L. Forehand, Raleigh, NC (US);
K. Andrew Kintz, Apex, NC (US);
Teresa L. Forehand, Raleigh, NC (US);
Lord Corporation, Cary, NC (US);
Abstract
Magnetorheological devices, including damping devices, rotary devices, and haptic systems constructed with said devices are disclosed. The devices contain dry magnetically-responsive particles, or MR fluids containing the magnetically responsive particles. The magnetically soft particles characterized by a single process yield population of atomized particles having a cumulative 10%, 50% and 90% by volume, fraction within specified size, i.e., Dof from 2 up to and including a Dof 5 μm, a D8 μm up to and including a Dof 15 μm, a Dof 25 μm up to and including a Dof 40 μm, and characterized by a least squares regression of log normal particles size against cumulative volume % fraction of greater than or equal to 0.77.