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:
Jun. 09, 2009
Filed:
Sep. 26, 2005
Atsushi Ando, Kariya, JP;
Minoru Wakamatsu, Kariya, JP;
Kazuyuki Ichikawa, Okazaki, JP;
Isashi Kashiwagi, Kariya, JP;
Atsushi Ando, Kariya, JP;
Minoru Wakamatsu, Kariya, JP;
Kazuyuki Ichikawa, Okazaki, JP;
Isashi Kashiwagi, Kariya, JP;
Yoyoda Koki Kabuhsiki Kaisha, Kariya-shi, JP;
Abstract
In a tripod-type constant velocity joint having an inner joint member, an outer joint member, and three roller units, the radius R, outer width W, and inner width Wof the outer periphery cylindrical surface of each roller unit, and the radius Rof the center hole of each roller unit satisfy the inequalities: 0.5Rtc(1/cos 0.3⊖−1)+(RR)μ<Wand 1.5Rtc(1−cos 0.3⊖)+(R−R)μ<W, where Rtc: the radius of a circle passing through the respective centers of tripod spherical surfaces of the inner joint member, ⊖: the maximum joint angle between the outer joint member and the inner joint member, and μ: coefficient of friction between each tripod spherical surface and the wall surface of the center hole of the corresponding roller unit.