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. 30, 2003
Filed:
May. 29, 2002
Applicant:
Inventor:
Akira Fujiwara, Wako, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22F 5/08 ; B22F 3/24 ;
U.S. Cl.
CPC ...
B22F 5/08 ; B22F 3/24 ;
Abstract
A sintered sprocket is provided in which surface pressure resistance can be improved without using a forging processing. An Fe-based sintered alloy which contains C at 0.2 to 0.5% by weight, Mo at 0.2 to 1.0% by weight, and Ni at 0.2 to 1.0% by weight, and which exhibits a metallic structure in which an internal base layer comprises ferrite and bainite and in which the ferrite adjoins voids, is subjected to a rolling and is then subjected to carburizing and hardening.