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:
Mar. 17, 2015
Filed:
Dec. 06, 2011
Teruaki Fujio, Iwata, JP;
Teruaki Fujio, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A fixed type constant velocity universal joint includes eight or twelve torque transmitting balls arranged in ball tracks formed of pairs of track grooves of an outer joint member and track grooves of an inner joint member, respectively. A center of curvature of each of the track grooves of the outer joint member and a center of curvature of each of the track grooves of the inner joint member have an axial offset of zero. When eight torque transmitting balls are employed, the track grooves of the outer joint member and the inner joint member each include inclined tracks arranged at a 90° pitch along a circumferential direction and inclined in opposite directions with respect to an axial line and other tracks which are formed between the inclined tracks and parallel to the axial line.