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. 23, 2007
Filed:
Mar. 11, 2005
Applicants:
Shunsuke Takeguchi, Tochigi, JP;
Hiroyuki Takamura, Tochigi, JP;
Inventors:
Shunsuke Takeguchi, Tochigi, JP;
Hiroyuki Takamura, Tochigi, JP;
Assignee:
Nippon Piston Ring Co., Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F 3/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
The temporary compacting of the powder for use in sintering is carried out, the temporary sintering is carried out, the main compacting is carried out, the main sintering is carried out, and the thickness of the radius direction of the base part of the cam before the heat-treatment is set to 3.0 mm or more.