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:
Oct. 14, 2008
Filed:
May. 27, 2005
Applicants:
Susumu Tanaka, Kanagawa, JP;
Yasuo Murakami, Kanagawa, JP;
Inventors:
Susumu Tanaka, Kanagawa, JP;
Yasuo Murakami, Kanagawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C 33/62 (2006.01); C22C 38/00 (2006.01); C22C 38/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
An inner ringand an outer ringof a rolling bearingare made from steel that contains carbon in the range of 0.65 to 1.25% by mass, silicon in the range of 0.7 to 2.5% by mass, manganese in the range of 0.1 to 1.5% by mass, chromium in the range of 0.5 to 3.0% by mass, 1.5% by mass or less of molybdenum, 9 ppm or less of oxygen, 30 ppm or less of titanium, and 80 ppm or less of sulfur, and whose rating number of the Thin type A series inclusion is 1.5 or less and that of the Heavy type A series inclusion is 1.0 or less when the rating numbers are measured by a method stipulated in ASTM E45.