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:
Jan. 20, 2004
Filed:
Aug. 28, 2001
Mark Alan Leimer, Fort Wayne, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
A valve stem seal assembly for an internal combustion engine includes an elastomer seal body and a metal retainer adapted to secure the seal body in place over a valve guide. The cylindrical seal body has an aperture with at least one radially inwardly directed sealing lip adapted to engage a reciprocally movable valve stem to minimize escape of oil lubricant from the engine along a path between the valve guide and stem. The retainer, formed of a spring metal cylindrical body adapted to frictionally retain the seal body at its upper end, contains first and second sets of axially depending resilient fingers at its lower end. The first set of fingers mechanically engages and supports a unique valve guide member within a valve guide aperture of a cylinder head deck, while the second set of fingers supports the seal assembly directly against the head deck under a valve spring.