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:
Dec. 18, 1979
Filed:
Jun. 15, 1977
Applicant:
Inventor:
Michael Shepherd, Indianapolis, IN (US);
Assignee:
Wallace Murray Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
74574 ; 64 / ; 291593 ; 188 17 ; 188 / ;
Abstract
A torsional vibration damper of the type having an outer inertia ring, a radially intermediate elastomer annulus, and a radially innermost hub. The polar moment of inertia of the entire damper is reduced by forming the hub of a low density material such as aluminum or plastic. The specific improvement resides in metal reinforcing members molded or otherwise inserted into the hub, thus overcoming material weakness and the phenomenon of creep in the plastic.