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:
Aug. 23, 2011
Filed:
Apr. 05, 2010
Fuminori Satoji, Kuwana, JP;
Ryouichi Nakajima, Kuwana, JP;
Isao Komori, Kuwana, JP;
Kazuo Okamura, Kuwana, JP;
Masafumi Okuma, Tokyo, JP;
Kenichi Mitani, Tokyo, JP;
Fuminori Satoji, Kuwana, JP;
Ryouichi Nakajima, Kuwana, JP;
Isao Komori, Kuwana, JP;
Kazuo Okamura, Kuwana, JP;
Masafumi Okuma, Tokyo, JP;
Kenichi Mitani, Tokyo, JP;
NTN Corporation, Osaka-fu, JP;
Abstract
Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatuscomprising a housingand bearing sleeveas fixed-side members, a shaft memberas a rotational-side memberhaving a portionfor mounting a rotor magnet, and a disk hub, the shaft memberbeing supported by the bearing sleevein the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surfaceof the bearing sleeveand the outer circumferential surfaceof the shaft member while the shaft memberis in rotation, the apparatuscomprising a disk hubwhich is fixed on the shaft memberand has a portionfor mounting the rotor magnet, and the disk hubbeing a molded resin article formed by insert-molding using the shaft memberas an insert piece.