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. 13, 2004
Filed:
Jul. 19, 2002
Hisaaki Kura, Shizuoka-ken, JP;
Kenji Terada, Shizuoka-ken, JP;
Tatsuhiro Goto, Shizuoka-ken, JP;
Akio Sakaguchi, Shizuoka-ken, JP;
Shigeyoshi Ishiguro, Shizuoka-ken, JP;
Kazuhiko Yoshida, Shizuoka-ken, JP;
Tatsuro Sugiyama, Shizuoka-ken, JP;
NTN Corporation, Osaka-fu, JP;
Abstract
An annular support ring is fitted onto the outer periphery of each trunnion . This support ring and the roller are unitized via a plurality of needle rollers to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion has an outer periphery of straight shape, parallel to the axis of the trunnion . In cross section, the trunnion has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions and the provision of predetermined clearances between the trunnions and the support rings , to allow the support rings to move along the axial directions of the trunnions as well as make tilting movements with respect to the trunnions