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:
Mar. 03, 2020
Filed:
Aug. 03, 2016
Bridgestone Corporation, Tokyo, JP;
Hiroshi Kojima, Tokyo, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
A vibration damping device () comprises a tubular outer attachment member () and an inner attachment member (); a pair of main rubber portions () that couple the outer attachment member () to the inner attachment member (), and that are arranged so as to be spaced in an axial direction along a central axis (O) of the outer attachment member (); and a partition portion () that couples the outer attachment member () to the inner attachment member (), and that partitions a liquid chamber () between the pair of main rubber portions (), in the axial direction, into a first liquid chamber () and a second liquid chamber (). The partition portion () comprises an annular rigid portion () in which a restricted passage () that connects the first liquid chamber () to the second liquid chamber () is formed, and an annular elastic portion () that is adjacent to the rigid portion () in the radial direction. The elastic portion () is compressed and deformed in the radial direction and makes contact with the rigid portion () in an unbonded state.