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. 05, 1999
Filed:
Feb. 20, 1998
Yushu Wang, Marshall, MI (US);
Simon Narasimhan, Marshall, MI (US);
Les Ecklund, Battle Creek, MI (US);
James Larsen, Saginaw, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An light weight hollow valve assembly for use in an engine. The intake and exhaust valve seats are of a different metallurgical composition for reducing adhesive and abrasive wear between the valve seat and the insert. The assembly 10 includes a valve 12 including a valve seat face 16. An insert 18 is mounted within the engine for cooperating in sealing engagement with the valve seat face 16. The insert 18 and the valve seat face 16 are each provided with a layer 20, 22 consisting essentially of a nitride for reducing adhesive and abrasive wear between the valve seat face 16 and the insert 18.