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:
Apr. 11, 2006
Filed:
Aug. 05, 2003
Applicants:
Kazuhiko Yoshida, Iwata, JP;
Kazuhiro Muramatsu, Iwata, JP;
Inventors:
Kazuhiko Yoshida, Iwata, JP;
Kazuhiro Muramatsu, Iwata, JP;
Assignee:
NTN Corporation, Osaka-Fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 3/223 (2006.01);
U.S. Cl.
CPC ...
Abstract
A constant velocity universal joint which can provide an improved strength in a stem portion by simple and effective countermeasure. The constant velocity universal joint include a bowl-shaped mouth portion and an outer joint member having the stem portion with a serration formed on its outer peripheral surface. The stem portion extends from a bottom portion of the mouth portion in its axial direction as an integrated part. An induction hardened area C is formed in the bottom portion of the mouth portion.