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:
Aug. 14, 1990
Filed:
Jun. 30, 1989
Applicant:
Inventor:
J Dudley Binford, Richmond, IN (US);
Assignee:
Dana Corporation, Toledo, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C / ;
U.S. Cl.
CPC ...
1231 / ; 277153 ; 277174 ; 277177 ; 277178 ;
Abstract
A valve stem seal assembly includes a rigid cylindrical shell and an annular resilient seal body supported within an endwall of the shell. The resilient seal body includes an exterior circumferential groove, and the endwall contains an aperture adapted for being received in the groove. The circumference of the aperture in the endwall is greater than the circumference of the bottom of the groove. A predetermined radial clearance is thereby created to provide that the resilient seal body remains concentric with a reciprocating valve stem, notwithstanding the fact that the stem may be eccentric relative to a valve guide to which the assembly is affixed.