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:
Jul. 23, 2001
Koji Sahashi, Shizuoka-ken, JP;
Kazuhiko Hozumi, Shizuoka-ken, JP;
Keisuke Sone, Shizuoka-ken, JP;
Masahiro Ozawa, Shizuoka-ken, JP;
Akira Torii, Shizuoka-ken, JP;
NTN Corporation, Osaka-fu, JP;
Abstract
A bearing device for a drive wheel is provided with improved strength of coupling a hub wheel and an outer joint member without significantly raising the manufacturing cost. The bearing device for a drive wheel includes the hub wheel, a constant velocity universal joint and bearings arranged in inner races, the hub wheel, the universal joint and the bearings being unitized, at least the inner race being formed in the outer joint member of the constant velocity universal joint. In the bearing device, the hub wheel and the outer joint member are meshed with each other by way of serrations and coupled to each other by caulking. Undulations of serrations at near a caulked section being filled with plastic deformed part caused by the caulking.