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:
Apr. 03, 1990
Filed:
Jul. 01, 1988
Kazuhiro Doi, Tokohama, JP;
Yasuhiko Fujiwara, Tsukui, JP;
Toshiro Abe, Mitaka, JP;
Shinichi Matsui, Yokosuka, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
A vibration damper includes first and second electrode bodies which are operatively connected with a vibrating body and a base, respectively and which are immersed in a rheopetic fluid. The relative velocity and displacement between the body and the base are determined and used to control the voltage applied across the electrode bodies in manner wherein when the relative displacement and velocity are out of phase, a high voltage is applied to electrodes to induce a high damping force and as the period wherein the two parameters go in phase is approchaed, the voltage is continuously reduced to reduce the damping force.