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:
Nov. 04, 2014
Filed:
Aug. 29, 2011
Applicant:
Kenta Sakaguchi, Iwata, JP;
Inventor:
Kenta Sakaguchi, Iwata, JP;
Assignee:
NTN Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/41 (2006.01); F16C 33/38 (2006.01); F16C 33/66 (2006.01); F16C 19/06 (2006.01);
U.S. Cl.
CPC ...
F16C 33/3887 (2013.01); F16C 33/416 (2013.01); F16C 2240/80 (2013.01); F16C 33/418 (2013.01); F16C 33/6614 (2013.01); F16C 19/06 (2013.01);
Abstract
A retainer for a ball bearing and a ball bearing have reduced torque even in grease lubrication. The retainer includes a retainer body which has an annular shape and has recesses formed in one axial end surface thereof along a peripheral direction at predetermined pitches and a pair of claw portions provided to protrude from opening ends of each of the recesses, the opening ends being opposed to each other in the peripheral direction. Each of the recesses and the pair of claw portions form a pocket in which a ball is received. A pocket has a PCD which is set smaller than a PCD of the ball to be received in the pocket.