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:
May. 19, 2015
Filed:
May. 06, 2005
Applicants:
Takashi Tsujimoto, Iwata, JP;
Rino Fukami, Iwata, JP;
Seiji Kanbara, Iwata, JP;
Inventors:
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/34 (2006.01); F16C 19/00 (2006.01); F16C 33/32 (2006.01); F16C 33/64 (2006.01); F16C 33/66 (2006.01);
U.S. Cl.
CPC ...
F16C 33/34 (2013.01); F16C 2240/54 (2013.01); F16C 33/32 (2013.01); F16C 33/64 (2013.01); F16C 33/6651 (2013.01); F16C 2206/04 (2013.01);
Abstract
At least the surfaces of rolling elements of a rolling bearing are each randomly formed with an innumerable number of microconcave-like pits. The surface roughness parameter Ryni of the surfaces provided with the pits is in a range of 0.4 to 1.0 μm, and the Sk value is −1.6 or below.