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:
Dec. 06, 1994
Filed:
Jan. 26, 1993
Applicant:
Inventors:
Assignee:
Daido Tokushuko Kabushiki Kaisha, Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
1231883 ; 12318811 ;
Abstract
An engine valve having composite structure comprising a valve stem and a valve head which are made from Ti--Al based alloy and a tail end formed with heat resisting steel are produced by joining a stem end member made from the heat resisting steel to an end of the valve stem made from the Ti--Al based alloy opposite to the valve head by, for example, brazing.