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:
Apr. 20, 2004
Filed:
May. 22, 2002
Applicant:
Inventors:
Kouji Ohbayashi, Anjo, JP;
Kazunari Suzuki, Anjo, JP;
Yoshihisa Yamamoto, Anjo, JP;
Kengo Nomura, Anjo, JP;
Assignee:
Aisin AW Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 5/708 ; C21D 1/04 ;
U.S. Cl.
CPC ...
F16H 5/708 ; C21D 1/04 ;
Abstract
A planetary carrier supports pinion gears of a planetary gear set via pinion shafts. Each hole in which a pinion shaft is mounted has a shallow hardened wall surface that is hardened by very-high-frequency induction heating and quenching. Therefore, the durability of the pinion shaft-supporting holes of a cold-forged piece or a pressed piece can be improved without thermal strain.