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:
Jul. 13, 1999
Filed:
Apr. 10, 1997
Applicant:
Inventor:
David E Johnston, East Hebron, NH (US);
Assignee:
Freudenberg-NOK General Partnership, Plymouth, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277559 ; 277549 ;
Abstract
A uni-directional seal member for use on a shaft includes a rigid shell, a support member in contact with the rigid shell, and a resilient sealing member in contact with the support member and an insert washer. The sealing member has a sealing face, where that sealing face has a contact area having a radially extending profile of a cyclically repeating shape.