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 8913343 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 16, 2014

Filed:

Jun. 14, 2012
Applicant:

Daiki Hayashi, Shizuoka, JP;

Inventor:

Daiki Hayashi, Shizuoka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 19/20 (2006.01); G11B 25/04 (2006.01);
U.S. Cl.
CPC ...
G11B 19/2036 (2013.01);
Abstract

A disk drive device comprises: a hub; a base rotatably supporting the hub via a bearing; a core fixed to the base; a cylindrical magnet fixed to the hub; and a suction plate fixed to the base, the suction plate being arranged to face the cylindrical magnet in a direction along the rotational axis and made of magnetic material. The suction plate is arranged so that the minimum distance between the suction plate and the rotational axis is greater than the minimum distance between the cylindrical magnet and the rotational axis. A projection area created by projecting the cylindrical magnet onto a plane that is perpendicular to the rotational axis partially overlaps a projection area created by projecting the suction plate onto the plane.


Find Patent Forward Citations

Hayashi, Daiki. (2014). Rotating device using a fluid dynamic bearing with magnet and suction plate (U.S. Patent No. 8913343). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8913343

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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