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:
Jun. 13, 2000
Filed:
Nov. 10, 1998
Applicant:
Inventors:
Kouji Ishikawa, Fujisawa, JP;
Nobuo Goto, Fujisawa, JP;
Hisashi Machida, Fujisawa, JP;
Takashi Imanishi, Yokohama, JP;
Makoto Fujinami, Chiba, JP;
Hiroshi Kato, Fujisawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; C23C / ;
U.S. Cl.
CPC ...
476 42 ; 29893 ; 148233 ; 148319 ; 476 40 ;
Abstract
Improved input and output discs for toroidal type continuously variable transmissions are obtained by select processing techniques to form hardened layers. Processing techniques include, e.g., carburizing, carbonitriding, and high-frequency induction hardening. Shot peening may be used to impart compressive residual surface stress to predetermined disc portions to enhance resistance to cracking.