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. 01, 2000
Filed:
Mar. 19, 1998
Tsukasa Morita, Kanagawa-ken, JP;
Masanobu Hayasaka, Kanagawa-ken, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
At a time of manufacturing a clutch drum formed in a cup shape, having a peripheral wall formed in a tooth profile, and having a circumferential groove for mounting a snap ring in a portion close to an open end of an inside projecting portion, in a stage of forming a peripheral wall of a base material formed in a cup shape into a predetermined tooth profile, after forming in such a manner that a minimum outer diameter of the open end portion of the inside projecting portion is larger than a maximum diameter of the circumferential groove for the snap ring, a cutting process is given to the open end portion of the inside projecting portion 3, so that the circumferential groove is formed. Accordingly, a tooth profile having an uneven amount necessary for transmitting a rotation is secured and no extending portion is produced in the open end portion of the inside projecting portion.