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 7441957 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 28, 2008

Filed:

Dec. 01, 2005
Applicants:

Chu-wan Hong, Guangdong, CN;

Jung-yuan Wu, Guangdong, CN;

Inventors:

Chu-Wan Hong, Guangdong, CN;

Jung-Yuan Wu, Guangdong, CN;

Assignee:

Foxconn Technology Co., Ltd., Tu-Cheng, Taipei Hsien, TW;

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

A fluid dynamic bearing assembly includes a bearing sleeve () having an inner surface and a rotary shaft () rotatably received in the bearing sleeve. The rotary shaft has an outer surface. One of the inner surface of the bearing sleeve and the outer surface of the rotary shaft forms a dynamic pressure generating groove pattern (). The groove pattern includes a plurality of grooves () extending from a center area toward one edge of the groove pattern. Each of the grooves has at least one of a depth and a width decreasing from the center area toward the edge.


Find Patent Forward Citations

Hong, Chu-Wan. (2008). Fluid dynamic bearing (U.S. Patent No. 7441957). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7441957

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