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:
Jan. 26, 2016
Filed:
Sep. 21, 2011
Akio Shimamura, Yokohama, JP;
Akio Shimamura, Yokohama, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
The present invention is an anti-vibration device () that includes: a first mounting component () that is cylindrically-shaped and joined to one of a vibration generating portion and a vibration receiving portion; a second mounting component () that is joined to the other one of the vibration generating portion and the vibration receiving portion; a first elastic body () that elastically joins the first mounting component () and the second mounting component () together; a fluid chamber () that is provided inside the first mounting component () and inside which a fluid is sealed; a first partitioning wall () that divides the fluid chamber () in an axial direction so as to define a main fluid chamber (), a portion of wall surfaces of which is the first elastic body, and an auxiliary fluid chamber; a second partitioning wall () that divides the main fluid chamber () in a circumferential direction so as to define a plurality of divided main fluid chambers (); and a plurality of restricting passages () that enable the plurality of divided main fluid chambers (A,B) and the auxiliary fluid chamber () to communicate with each other, wherein at least a portion of the first partitioning wall () is formed by a second elastic body () that is elastically deformable, the second partitioning wall () is joined to both the second mounting component () and the second elastic body (), and the second elastic body () has differences in rigidity in a radial direction.