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:
Jun. 23, 1992
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Tomoyuki Kurata, Kanagawa, JP;
Hideo Kemuyama, Kanagawa, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16M / ;
U.S. Cl.
CPC ...
248559 ;
Abstract
A torsional damper comprises a pulley hub fixed to a rotary shaft such as the crank shaft of an engine or the like, and a damper mass fixed, by means of a damping rubber, in a cavity formed in the front portion of the pulley hub. A projection is provided on the outer circumference of the damper mass, and a groove is formed in the pulley hub oppositely to the projection to receive a part of the projection.