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. 04, 1993
Filed:
Jul. 13, 1992
Applicant:
Inventor:
Frederick E Lederman, Sandusky, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 38 ; 277 35 ; 277 962 ; 277152 ; 384147 ; 384484 ;
Abstract
A unitized seal incorporates two nested steel casing, a PTFE disk with two edges in sealing contact with one casing, and an elastomer seal with two lips in sealing contact with the back of the PTFE disk. The PTFE disk provides two primary, low friction sealing barriers. The elastomer seal provides two additional barriers, which comply more readily than the edges of the stiffer PTFE disk to radial eccentricity and axial run out. The elastomer seal lips run with reduced friction because of the fact that they contact the PTFE disk.