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:
Feb. 11, 2003
Filed:
Sep. 01, 2000
Applicant:
Inventors:
Shuuji Nakano, Nagoya, JP;
Yoshihiko Masuda, Okazaki, JP;
Yoshihito Moriya, Nagoya, JP;
Hideo Nagaosa, Nishikamo-gun, JP;
Shinichiro Kikuoka, Nishikamo-gun, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/12 ; C22C 1/04 ;
U.S. Cl.
CPC ...
B22F 3/12 ; C22C 1/04 ;
Abstract
A three-dimensional cam has a cam profile surface shape that changes along a rotating axis of the cam, and is produced by net-shape-sintering. The sintered density of a sintering material at the time of net-shape-sintering is set to 7 to 7.4 g/cm to achieve a hole rate of the cam profile surface within the range of 5 to 10%. The three-dimensional cam has an improved durability, while securing high productivity.