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. 31, 1991
Filed:
Dec. 06, 1990
Akihiro Mayama, Fujisawa, JP;
Masaru Takeda, Machida, JP;
Nissan Motor Co., Ltd., , JP;
Abstract
A fluid filled elastomeric damping device has a diaphragm enclosing a working chamber and a diaphragm restraining mechanism for selectively restraining and freeing movement of the diaphragm and thereby varying a damping or operational characteristic of the device. The mechanism includes a pressing plate for pressing a blocking portion of the diaphragm against a seating surface of an outer casing member under a bias of a blocking force generating member and thereby rigidly closing a compensation passage communicating with the working chamber. The diaphragm is restrained in movement by the pressing plate when the solenoid is de-energized and freed in movement when the solenoid is energized.