TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION AND METHOD OF MANUFACTURING THE TRANSMISSION

Title:

TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION AND METHOD OF MANUFACTURING THE TRANSMISSION

Document Type and Number:

WIPO Patent Application WO/2002/038984

Kind Code:

A1

Abstract:

A toroidal continuously variable transmission, comprising input and output disks having traction surfaces of recessed arc shape in cross section formed between small and large diameter end parts and coaxially disposed in the opposed state of the traction surfaces and a power roller frictionally engaged with the traction surfaces of the input and output disks for power transmission, characterized in that at least one of the input disk, output disk, and power roller is formed of an alloy steel including an Mo of 0.15 to 2.0 w.%, and quenched and tempered after carburized or carbonitrided at a temperature of 1000 ° C or higher so that a surface carbon density is 0.8 to 1.4%.

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Inventors:

OKITA SHIGERU (JP)
YOSHIKAWA TOMONOBU (JP)
ISHII HIROSHI (JP)

Application Number:

PCT/JP2001/009875

Publication Date:

May 16, 2002

Filing Date:

November 12, 2001

Export Citation:

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Assignee:

NSK LTD (JP)
OKITA SHIGERU (JP)
YOSHIKAWA TOMONOBU (JP)
ISHII HIROSHI (JP)

International Classes:

C21D9/00; F16H15/38; C21D1/18; (IPC1-7): F16H15/38; C21D9/00

Foreign References:

JPH10231908A	1998-09-02
US6066068A	2000-05-23
JPH11210854A	1999-08-03

Other References: