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:
Nov. 13, 2001
Filed:
Jun. 21, 1999
Applicant:
Inventors:
Tetsuo Unno, Kanagawa, JP;
Yoshio Shoda, Kanagawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C 3/336 ; F16C 3/358 ; F16C 1/922 ;
U.S. Cl.
CPC ...
F16C 3/336 ; F16C 3/358 ; F16C 1/922 ;
Abstract
The roller bearing,comprises a plurality of substantially cylindrical-shaped rollers,which are respectively interposed between a concave shaped race surface,formed on an outer race,and a concave-shaped race surfaces,formed on an inner race,Each of the rollers,is structured such that the central portion of the rolling surface thereof is formed by a first convex-shaped bus,which corresponds to the concave-shaped race surfaces,and,while the two end portions of the rolling surface thereof are respectively formed by second buses,which have a radius of curvature smaller than the radius of curvature of the first bus