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. 19, 1988
Filed:
Aug. 08, 1986
Applicant:
Inventors:
Toshiharu Fukuizumi, Toyota, JP;
Hideo Nonoyama, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148152 ; 148902 ; 148903 ; 2191 / ;
Abstract
A process for producing a surfactant remelted chilled layer camshaft with cams subjected to a remelting chilling treatment comprising steps of melting a sliding cam surface by irradiating a high density energy (e.g., a TIG arc) and forming a continuous chill layer by self-cooling. Then, at places where a formed molten metal pool may be caused to sag by the force of gravity, the melting action is interrupted to solidify the molten metal pool, and is resumed so as to overlap a former formed chill layer portion and a following chill layer portion.