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:
Feb. 22, 2000
Filed:
Aug. 12, 1998
Applicant:
Inventors:
Keith D Weiss, Eden Prairie, MN (US);
J David Carlson, Cary, NC (US);
Donald A Nixon, Wilson, NC (US);
Assignee:
Lord Corporation, Cary, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C11D / ; C11D / ; H01F / ;
U.S. Cl.
CPC ...
252 6252 ; 252 6255 ; 252 6256 ;
Abstract
A magnetorheological fluid that includes a carrier component and a magnetizable particle component wherein the magnetizable particle component is a mixture of at least a first particle group having an average particle diameter and a second particle group having an average particle diameter wherein the average particle diameter of said first particle group is 3 to 15 times larger than the average particle diameter of said second particle group.