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:
Feb. 22, 2022
Filed:
Nov. 08, 2018
Bridgestone Corporation, Tokyo, JP;
Hiroshi Kojima, Tokyo, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
The anti-vibration device () includes: an inner attachment member (); an outer cylinder () that surrounds the inner attachment member; and elastic bodies () that elastically couple the inner attachment member and the outer cylinder. The elastic bodies include: a pair of end elastic bodies () fitted in the outer cylinder; and a pair of intermediate elastic bodies () separately arranged on both sides of the inner attachment member and between the end elastic bodies. Covering members () that form liquid chambers () between the covering members and the inner attachment member is arranged between the inner attachment member and the outer cylinder. An orifice passage that provides communication between the liquid chambers is formed between the covering members and the outer cylinder. The entire intermediate elastic bodies are formed of rubber material. The covering members surround the entire circumference of the inner attachment member from outside thereof in a radial direction and cause compressive deformation of the intermediate elastic bodies inward in the radial direction and inward in a circumferential direction.