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. 17, 2004
Filed:
Sep. 20, 2001
Osamu Fukukawa, Anjo, JP;
Masaki Nakajima, Anjo, JP;
Hideyuki Nagai, Anjo, JP;
Takehiko Adachi, Anjo, JP;
Aisin AW Co., Ltd., , JP;
Abstract
Excessive increase in processing loads and damages to a thickening roller resulting from pressing the thickening roller against the blank from the outer peripheral end face are prevented, and processing of a cylindrical member having an enlarged diameter portion is made possible. With the side surface of an intermediate portion of a blank abutting and being supported on an increased diameter portion of a mandrel, a thickening roller is pressed against the side surface of the intermediate portion and moved in the radially inward direction. The blank is thus partially thickened, and the thickened portion is pressed into tooth spaces formed in a columnar portion of the mandrel, whereby splines are formed.