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:
Aug. 13, 2002
Filed:
Feb. 29, 2000
Applicant:
Inventor:
Mitsuhiko Shimomura, Nagoya, JP;
Assignee:
O-Oka Corporation, Aichi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 5/704 ;
U.S. Cl.
CPC ...
F16H 5/704 ;
Abstract
To put mass production of a sprocket with dog gear by forging to practical use, a worked product is manufactured by a first step of forming by hot forging means a primary workpiece having a shape comprising the sprocket and the dog gear adjacent to each other; a second step of forming a secondary workpiece having accuracy increased by setting the primary workpiece in a cold forging apparatus; and a third step of forming by cutting means a cut-in groove of a fixed depth perpendicularly to an axial direction in a boundary between a dog gear and a sprocket of the secondary workpiece.