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. 15, 2007
Filed:
Feb. 14, 2005
Tetsuji Andou, Inuyama, JP;
Masahiko Nagasawa, Kani, JP;
Tetsuji Andou, Inuyama, JP;
Masahiko Nagasawa, Kani, JP;
Tokai Rubber Industries, Ltd., Komaki-Shi, JP;
Abstract
A vibration damping device, including: first and second mounting members spaced apart from one another; an elastic body interposed between and connecting the two mounting members; a diaphragm cooperating with the elastic body to define therebetween a fluid chamber; and a partition structure including a partition member and a flexible movable plate disposed in a central opening of the partition member so as to divide the fluid chamber into primary and auxiliary fluid chambers communicating through an orifice passage, wherein the movable plate has a primary-fluid-chamber-side recess which is formed in one of opposite surfaces thereof on the side of the primary fluid chamber and an auxiliary-fluid-chamber-side groove in the other surface located on the side of the auxiliary fluid chamber so as to be positioned radially outwardly of the recess and which continuously or discontinuously extends in the circumferential direction.