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.:

US 8613553 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 24, 2013

Filed:

Jul. 20, 2010
Applicants:

Manabu Komori, Kyoto, JP;

Mitsuya Kusuhara, Kyoto, JP;

Kunio Sakurada, Kyoto, JP;

Kazuya Sato, Kyoto, JP;

Inventors:

Manabu Komori, Kyoto, JP;

Mitsuya Kusuhara, Kyoto, JP;

Kunio Sakurada, Kyoto, JP;

Kazuya Sato, Kyoto, JP;

Assignee:

Nidec Corporation, Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 32/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fluid dynamic bearing includes: a shaft arranged along a center axis; an annular portion expanding radially outwards from the shaft; a sleeve having a top surface opposed to an under surface of the annular portion to support the shaft and the annular portion in a relatively rotatable manner; and a lubricating fluid interposed between the shaft and annular portion and the sleeve. The fluid dynamic bearing further includes a substantially annular edge surrounding the center axis on the under surface and a solid lubricating film on the radially outer side of the edge.


Find Patent Forward Citations

Komori, Manabu. (2013). Production method of fluid dynamic bearing, fluid dynamic bearing, spindle motor, and disk driving apparatus (U.S. Patent No. 8613553). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8613553

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