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:
Nov. 29, 1977
Filed:
Nov. 03, 1976
Applicant:
Inventor:
Edwin D Ditto, Bloomfield Hills, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; B23K / ; B23P / ;
U.S. Cl.
CPC ...
2915 / ; 2915 / ; 2191 / ; 2191 / ; 72342 ;
Abstract
A mass of alloy material is deposited on a valve seat and is heated to alloying temperature by a laser beam which sweeps around the valve seat thereby alloying the valve seat. While the alloyed material is still at a high temperature, the forming tool is pressed against the valve seat to shape the valve seat to a configuration which requires little or no grinding.