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. 30, 2003
Filed:
Jan. 22, 2002
Tomonobu Yoshikawa, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
The toroidal-type continuously variable transmission comprises an input shaft, an input disk, an output disk, a plurality of trunnions, a plurality of power rollers, and power roller bearings, wherein the mutually opposed inner surfaces of the input and output disks are respectively formed as concave surfaces each having an arc-shaped section, the peripheral surfaces of the power rollers are respectively formed as spherical-shaped convex surfaces, and these peripheral surfaces are contacted with the above-mentioned inner surfaces. The retainer of the power roller bearing is formed of high strength brass, and the high strength brass has a micro structure in which the &agr; phase thereof is 40% or more in the area ratio thereof, and the hardness of said retainer is set at HB80 or higher.