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:
Sep. 23, 2003
Filed:
Oct. 19, 2001
Applicant:
Inventors:
Tomonobu Yoshikawa, Kanagawa, JP;
Yasuo Murakami, Kanagawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 5/532 ;
U.S. Cl.
CPC ...
F16H 5/532 ;
Abstract
In the thus structured toroidal-type continuously variable transmission, at least one of the concave surface of the input side disk, the concave surface of the output side disk, the convex surfaces of the power rollers, the raceway surfaces of the inner races of the power roller bearings, and the raceway surfaces of the outer races of the power roller bearings is, after heat treatment, subjected to grinding, superfinishing and shot-peening and then surperfinishing again, and the resultant surface residual compression stress is in the range from −780 to −1800 MPa.