Patent Number: 7,465,249

Title: Toroidal type continuously variable transmission

Abstract: A toroidal type continuously variable transmission has an input shaft to which a rotation torque is input, an input side disk and an output side disk that are concentrically and rotatably supported by the input shaft in a state that an inner peripheral surface of the input side disk opposes to an inner peripheral surface of the output side disk, a power roller held between the input side disk and the output side disk and a hydraulic loading device applying predetermined pressing force so that the power roller is pressed between the input and output side disks. Fine grooves are formed on at least a radially inner part of the inner peripheral surface of the input side disk and at least radially outer part of the inner peripheral surface of the output side disk, respectively.

Inventors: Nishii; Hiroki (Kanagawa, JP), Inoue; Eiji (Kanagawa, JP)

Assignee: NSK Ltd.

International Classification: F16H 55/32 (20060101)

Expiration Date: 2021-12-16 0:00:00