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:
May. 21, 2002
Filed:
Dec. 20, 2000
Jun Saitoh, Saitama, JP;
Yamashita Rubber Kabushiki Kaisha, Saitama, JP;
Abstract
A first connecting member is connected to a second connecting member by an elastic body member. A fluid chamber which is formed inside the first connecting member, the second connecting member and the elastic body member is divided into a main fluid chamber and a sub-fluid chamber by a partition member An idle orifice and a damping orifice communicate with both chambers. In a part of a side wall member which forms the main fluid chamber is formed a round hole which is covered by a part of the elastic body member to form a horizontally movable membrane A circular wall is integrally formed with the partition member to face the horizontal movable membrane at predetermined intervals. Resonance of the horizontal membrane generated as a result of fluctuations of internal pressure in the main fluid chamber is controlled by the circular wall