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:
Dec. 02, 2003
Filed:
Feb. 27, 2002
Jun Sugihara, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A ratio control for a toroidal-type traction drive comprises toroidal discs defining a toroidal cavity. Traction roller assemblies have pivot trunnions rotatably supporting traction rollers. A ratio control element is provided, which is positionable to establish various ratios between the toroidal discs. A feedback structure is connected to the ratio control element and includes a ratio control valve to hydraulically control the traction roller assemblies, and a cam follower. A feedback cam is provided, which cooperates with the cam follower. A lost motion cam actuator is provided between a predetermined pivot trunnion and the feedback cam to permit limited independent deflected movement of the predetermined pivot trunnion from the pivot axis thereof without requiring corresponding movement of the feedback cam.