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:
Dec. 24, 1991
Filed:
Sep. 29, 1989
Applicant:
Inventors:
J David Carlson, Cary, NC (US);
Joseph E Bares, Cary, NC (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C10M / ;
U.S. Cl.
CPC ...
252 73 ; 252 783 ; 252572 ;
Abstract
A transparent electrorheological fluid having a fluid component, a particle component, and an activator wherein the index of refraction mismatch between the fluid component and the particle component is less than about 0.02 and wherein the conductivity of the particle component is at least about three times greater than the conductivity of the fluid component and is in the range of from about 1.times.10.sup.-5 s/m to about 1.times.10.sup.-9 s/m.