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. 31, 1994
Filed:
Apr. 20, 1992
Applicant:
Inventors:
Takeshi Kimura, Kodaira City, JP;
Satoru Kawamata, Higashimurayama, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
188267 ; 188320 ; 26714014 ;
Abstract
A restricted passage system is used in a vibration damping device, and comprises at least three cylindrical members concentrically arranged from each other at an interval and alternately serving as positive and negative electrodes and having a hole per each member in a position opposite to each other in diameter direction and insulation members fixed to upper and lower end portions of these members.