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:
Jul. 24, 2018
Filed:
Aug. 25, 2015
Applicant:
Ntn Corporation, Osaka, JP;
Inventors:
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 17/02 (2006.01); F16C 33/10 (2006.01); F16C 33/12 (2006.01); H02K 5/16 (2006.01); H02K 7/08 (2006.01);
U.S. Cl.
CPC ...
F16C 17/02 (2013.01); F16C 33/106 (2013.01); F16C 33/12 (2013.01); H02K 5/165 (2013.01); H02K 7/086 (2013.01); F16C 2380/26 (2013.01);
Abstract
A ratio W/Wof a circumferential width Wof each of inclined hill portions Gof a radial dynamic pressure generating portion G and a circumferential width Wof each of inclined groove portions Gis 1.2 or larger. And when an inner diameter of a bearing member is D, the circumferential width Wof each of the inclined groove portions satisfies 0.2D≤W≤0.4D.