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:
Nov. 08, 2011
Filed:
Feb. 14, 2008
Yoshihisa Doi, Utsunomiya, JP;
Yoshimi Usui, Haga-gun, JP;
Koichi Kawata, Utsunomiya, JP;
Masahiko Seki, Haga-gun, JP;
Yoshihisa Doi, Utsunomiya, JP;
Yoshimi Usui, Haga-gun, JP;
Koichi Kawata, Utsunomiya, JP;
Masahiko Seki, Haga-gun, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A shaft manufacturing apparatus includes a first drawing die having a cylindrical first cavity defined therein which is open at both ends thereof and a second drawing die having a cylindrical second cavity defined therein which is open at one end thereof. The angle formed between a first tapered part of the first drawing die and the axis of the first cavity is greater than the angle formed between a second tapered part of the second drawing die and the axis of the second cavity.