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. 05, 1989
Filed:
Dec. 27, 1988
Masaru Takeda, Tokyo, JP;
Toshiyuki Tabata, Sagamihara, JP;
Nissan Motor Co. Ltd., , JP;
Abstract
Disclosed herein is a fluid-filled mounting device which comprises an inner cylindrical member; an outer cylindrical case surrounding the inner cylindrical member; a cylindrical elastomer block disposed between the inner cylindrical member and the outer cylindrical case; a structure defining in the elastomer block a main recess; a structure defining in the elastomer block a deformable chamber at a portion diametrically opposite to the portion where the main recess is defined, the deformable chamber having an outer wall which includes first and second diaphragms, the first diaphragm having a spring constant different from that of the second diaphragm; an annular hollow structure disposed about the elastomer block in a manner to cover the main recess and the first and second diaphragms, thereby to define a main fluid chamber by the main recess, a first auxiliary fluid chamber by the first diaphragm and the annular hollow structure and a second auxiliary fluid chamber by the second diaphragm and the annular hollow structure; a first flow restricting path defined by the annular hollow structure for fluid communication between the main fluid chamber and the first auxiliary fluid chamber; and a second flow restricting path defined by the annular hollow structure for fluid communication between the main fluid chamber and the second auxiliary fluid chamber.