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:
Feb. 02, 1999
Filed:
Oct. 08, 1997
Applicant:
Inventor:
Hiroyoshi Teshima, Tottori-ken, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 9908 ; 360 9912 ;
Abstract
A disk driving spindle motor wherein a hub portion having a flange portion on which a disk is to be clamped is supported for rotation relative to a housing body and a rotor frame is attached to the flange portion, the hub portion being driven for rotation by magnetic repulsive action produced between the housing body and the rotor frame. A clearance extending from the outer to the inner periphery of the flange portion is formed between the abutment surfaces of the flange portion and the rotor frame. This structure results in decreased warping of a disk attached to a disk support surface.