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. 14, 1997
Filed:
Sep. 10, 1996
Applicant:
Inventor:
Jon Chandler, Powell, OH (US);
Assignee:
Federal-Mogul Corporation, Southfield, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277134 ; 277152 ; 277 53 ; 277 67 ; 384484 ; 384486 ; 384478 ;
Abstract
An annular elastomeric sealing member includes a static sealing lip and a series of projections facing the lubricant. Each projection has a convex front surface that provides two oppositely facing pumping faces and an angled rear surface that intersects the front surface at an acute angle so as to form a sharp leading edge. The sharp leading edge on each projection has a relatively small radial clearance with respect to the cylindrical surface that is to be sealed. This small clearance enables the projections to exert pumping forces on lubricant proximate to the cylindrical surface.