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:
Jul. 23, 2002
Filed:
Mar. 31, 2000
Michio Iihara, Shizuoka-ken, JP;
Yasushi Takahara, Shizuoka-ken, JP;
Yoshihiro Sagisaka, Shizuoka-ken, JP;
NTN Corporation, Osaka-fu, JP;
Abstract
There are provided an outer race of a constant velocity joint which has better operability and lower cost, and a method for manufacturing the same. First, an outer race having a shaft portion and a cylindrical portion is prepared as a blank. Then with a punch set fitted with an initial clearance in the radial direction into the inner periphery of the cylindrical portion the cylindrical portion is pressure-inserted into the die from the opening side thereof to form the ball rolling grooves on the inner periphery of the cylindrical portion 1 with the ironing operation being stopped when the ball rolling grooves of a predetermined length is formed while leaving an inner-most portion of cylindrical portion intact, thereby forming a margin recess for a grinding wheel at the base of the ball rolling groove