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:
Feb. 16, 2007
Applicants:
Kenji Hibi, Kuwana, JP;
Kenji Ito, Kuwana, JP;
Yasuhiro Yamamoto, Kuwana, JP;
Hiroshi Niwa, Kuwana, JP;
Isao Komori, Kuwana, JP;
Tetsuya Yamamoto, Kuwana, JP;
Inventors:
Kenji Hibi, Kuwana, JP;
Kenji Ito, Kuwana, JP;
Yasuhiro Yamamoto, Kuwana, JP;
Hiroshi Niwa, Kuwana, JP;
Isao Komori, Kuwana, JP;
Tetsuya Yamamoto, Kuwana, JP;
Assignee:
NTN Corporation, Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16C 32/06 (2006.01); H02K 5/16 (2006.01); F16C 33/14 (2006.01); H02K 7/08 (2006.01); F16C 17/02 (2006.01);
U.S. Cl.
CPC ...
H02K 7/085 (2013.01); F16C 33/14 (2013.01); F16C 17/02 (2013.01); F16C 2370/12 (2013.01);
Abstract
A fluid dynamic bearing device which can exhibit high bearing performance is provided at low costs by forming a highly accurate bearing gap. At least a region in the outer circumferential surface of a shaft which faces the radial bearing gap is constituted of an electroformed part, and the region of the shaft excluding the electroformed part is constituted of a resin portion.