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. 21, 2009
Filed:
Mar. 08, 2006
Kazuyuki Ichikawa, Okazaki, JP;
Isashi Kashiwagi, Kariya, JP;
Hiroyuki Iwashita, Tita-gun, JP;
Atsushi Ando, Kariya, JP;
Junji Ando, Kariya, JP;
Yosei Ando, Toyohashi, JP;
Hiroyuki Ito, Nagoya, JP;
Kazuyuki Ichikawa, Okazaki, JP;
Isashi Kashiwagi, Kariya, JP;
Hiroyuki Iwashita, Tita-gun, JP;
Atsushi Ando, Kariya, JP;
Junji Ando, Kariya, JP;
Yosei Ando, Toyohashi, JP;
Hiroyuki Ito, Nagoya, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
A constant velocity universal joint includes an inner race having an outer peripheral face on which inner grooves are formed, an outer race having an inner peripheral face on which outer grooves are formed, a plurality of balls each engaging with each pair of inner groove and outer groove, and an annular cage disposed between the inner race and the outer race and including window portions for retaining respective balls. A coefficient of sliding friction between the ball and a rolling face on the inner groove with which the ball is in contact, and a coefficient of sliding friction between the ball and a rolling face on the outer groove with which the ball is in contact are larger than a coefficient of sliding friction between the ball and a sliding face on the window portion with which the ball is in contact.