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:
Mar. 23, 1993
Filed:
Jan. 15, 1992
Applicant:
Inventors:
Makoto Kano, Yokohama, JP;
Ichiro Tanimoto, Yokohama, JP;
Osamu Kawamura, Nogimachi, JP;
Teruo Takahashi, Nogimachi, JP;
Assignees:
Nissan Motor Company, Ltd., Yokohama, JP;
Nippon Piston Ring Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; F01L / ;
U.S. Cl.
CPC ...
123 9039 ; 123 9051 ; 164 561 ; 164 571 ;
Abstract
In a process of casting a rocker arm as one piece from high chrome cast iron, a Ca-Si base addition agent is added to the molten metal in an amount of 0.3 to 0.6% by weight. The agent is effective as a globulizer to round high-hardness carbide precipitates directing toward the casting surface.