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:
Apr. 06, 2010
Filed:
Sep. 30, 2004
Applicants:
Chikara Ohki, Kuwana, JP;
Kikuo Maeda, Kuwana, JP;
Inventors:
Chikara Ohki, Kuwana, JP;
Kikuo Maeda, Kuwana, JP;
Assignee:
NTN Corporation, Osaka-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/62 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rolling bearing () having an outer ring (), an inner ring (), and a plurality of rolling elements, wherein at least one of the members, the outer ring (), inner ring () and rolling elements (), has a nitrogen rich layer and the grain size number of austenite crystal grains is in the range exceeding the number