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:
Feb. 17, 2009
Filed:
Oct. 17, 2003
Applicants:
Tadatoshi Suzuki, Iwata, JP;
Kenichi Ichikawa, Iwata, JP;
Kikuo Maeda, Kuwana, JP;
Yukio Fujii, Kuwana, JP;
Inventors:
Tadatoshi Suzuki, Iwata, JP;
Kenichi Ichikawa, Iwata, JP;
Kikuo Maeda, Kuwana, JP;
Yukio Fujii, Kuwana, JP;
Assignee:
NTN Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 1/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A full-type rolling bearing that can be used under the conditions of high-speed, heavy-load and lowered viscosity of lubricating oil is provided. The full-type rolling bearing is formed of an outer ring, an inner ring and rollers made of steel, at least one of the outer ring, inner ring and rollers has a carbonitrided layer in its surface layer, and the austenite crystal grain size number of the surface layer is larger than 10.