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. 08, 2006
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
What is disclosed is a magnetorheological fluid useful for incorporating within the working gap of magnetorheologically controllable linear or rotary devices. The MR fluid includes a carrier fluid component and a magnetic responsive particle component characterized by Dof 2 μm up to and including a Dof 5 μm, a Dof 8 μm up to and including Dof 15 μm; a Dof 25 μm to and including a Dof 40 μm; and further characterized by least squares regression (R) particles size against log normal cumulative volume percent of greater than or equal to 0.77. Optional preferred additives included therewith include thixotropic agent or viscosity modifier, dispersant or surfactant, antioxidant, corrosion inhibitor, and one or more lubricants.