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:
Sep. 24, 1991
Filed:
Aug. 28, 1990
Takeshi Noguchi, Yokohama, JP;
Tatsuro Ishiyama, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
An anti-vibration bush comprises: an outer casing adapted to be mounted on either a vibration generating member or a vibration receiving member; a shaft disposed in the outer casing and adapted to be mounted on the other member; and an elastic member disposed between the outer casing and the shaft and having a plurality of small liquid chambers filled with electrorheologic fluid. Electrodes for electrically activating the electrorheologic fluid are provided in a restricted path which permits the small liquid chambers to be in communication with each other. The electrical activation of the electrodes causes the fluid's viscosity to vary, so that the resistance to flow of the fluid passing through the restricted path is changed.