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. 06, 1994
Filed:
Mar. 11, 1992
Tatsuro Ishiyama, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A vibration isolation apparatus comprises an outer cylinder, an inner cylinder, an elastic member disposed between the outer and inner cylinders and deforming when vibration is generated, a main fluid chamber able to expand and contract according to deformation of the elastic member, an auxiliary fluid chamber able to expand and contract according to deformation of a membrane, and a restricted path communicating between the main and auxiliary fluid chambers. The main and auxiliary fluid chambers are communicated with each other around the inner cylinder. The restricted path is disposed at sides in the axial direction of main and auxiliary fluid chambers. Therefore, the restricted paths can be connected to the main and auxiliary fluid chambers at the positions where the fluid chambers are separated farthest from each other. As a result, the restricted paths can be extended.