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. 18, 2016
Filed:
Feb. 10, 2015
Applicants:
Minebea Co., Ltd., Kitasaku-gun, Nagano, JP;
The School Corporation Kansai University, Suita-shi, JP;
Inventors:
Shinichi Niwa, Kakegawa, JP;
Toshiaki Asakawa, Kakegawa, JP;
Shigeyuki Adachi, Fukuroi, JP;
Hiroshi Tani, Osaka, JP;
Assignees:
MINEBEA CO., LTD., Nagano, JP;
THE SCHOOL CORPORATION KANSAI UNIVERSITY, Suita-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 19/00 (2006.01); F16C 33/80 (2006.01); F16C 33/76 (2006.01); F16C 33/66 (2006.01); F16C 33/82 (2006.01); F16C 19/54 (2006.01); G11B 5/48 (2006.01);
U.S. Cl.
CPC ...
F16C 33/765 (2013.01); F16C 19/54 (2013.01); F16C 33/664 (2013.01); F16C 33/80 (2013.01); F16C 33/82 (2013.01); F16C 2370/12 (2013.01); G11B 5/4813 (2013.01);
Abstract
A ball bearing (rolling bearing) containing lubricant sealed therein is provided between a shaft and a sleeve. A labyrinth seal (seal gap) is provided at an end portion of the shaft or the sleeve in the axial direction. A permanent magnet is disposed such that a magnetic pole is located in proximity to the labyrinth seal. A magnetic seal effect that utilizes diamagnetism acting on evaporating oil is provided at the labyrinth seal.