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:
Oct. 06, 1981
Filed:
Mar. 14, 1980
Applicant:
Inventor:
Larry T George, Greenfield, IN (US);
Assignee:
Wallace Murray Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16F / ;
U.S. Cl.
CPC ...
277 12 ; 277D / ; 277153 ; 2772 / ; 74574 ;
Abstract
A hub construction for a torsional vibration damper. The hub is formed of aluminum to obtain the known damper performance advantages of a lower moment of inertia. The hub is coated with a Teflon anodized layer to (1) protect it from oxidation, to (2) prevent the formation of aluminum oxide particles at the elastomer-hub interface. The coating is of a surface roughness of 60-70 micro inches, being a roughness in excess of that recommended by seal manufacturers. Unexpectedly, the coating does not injure a seal used with the damper, thus yielding a third advantage.