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:
Aug. 05, 2003
Filed:
Aug. 22, 2001
Hiroshi Tone, Iwata, JP;
Tatsuhiro Goto, Iwata, JP;
Hideki Kondo, Iwata, JP;
Hisaaki Kura, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A constant velocity universal joint has a ring that is fitted on each trunnion and rotatably supports a corresponding roller so the roller is movable axially of an outer joint member along a roller guide surface. The outer circumferential surface of each trunnion has a straight shape, as viewed in the longitudinal section, and has, as viewed in the cross section, a shape which allows contact with the inner circumferential surface of the ring in a direction orthogonal to the axis of the outer joint member. A generatrix of the inner circumferential surface of the ring forms part of an ellipse having a major axis extending in a direction orthogonal to the axis of the ring or is composed of a central convex circular arc and a tangential line extending from an end portion of the circular arc to an end face of the ring.