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:
Oct. 22, 2002
Filed:
Jan. 11, 1999
Kiyoshi Okubo, Maebashi, JP;
Nobuo Gotou, Fujisawa, JP;
Takashi Imanishi, Fujisawa, JP;
Takehiko Yumoto, Takasaki, JP;
NSK Ltd., Tokyo, JP;
Abstract
A disk for a half toroidal type continuously variable transmission is manufactured through the following processes. In step S , a work as a base material mass is heated to a temperature suitable for forging. In step S , the work is forged into the work having a portion corresponding to a protrusion of the disk using a first die set. In step S , the work is forged into the work which has a hole corresponding to a mounting hole of the disk using a second die set. In step S , the work is forged into the work which has a portion corresponding to a skirt portion of the disk using a third die set. In step S , the work receives punching, machining and the like to finally obtain the disk product.