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:
Dec. 05, 2000
Filed:
Feb. 27, 1998
Applicant:
Inventors:
Kazuhiko Ueda, Kitakatsuragi-gun, JP;
Toshiyuki Tanaka, Moriguchi, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 13 ;
Abstract
In an optical disk device of the present invention, a spindle motor is separated into (1) a first motor unit composed of a bearing member, a bearing support for supporting the bearing member, and a turn table fixed to a rotor magnet and (2) a second motor unit provided with a first stator coil. During a cartridge loading operation, after the first motor unit is moved towards an optical disk, the second motor unit is slidably moved to a space created by the movement of the first motor unit so as to be rotatably driven as a spindle motor, thus realizing a thinner spindle motor.