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:
Nov. 06, 2001
Filed:
Apr. 21, 1999
Yuji Shishido, Chiba, JP;
Takashi Mochida, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A disk drive includes a drive unit including a mechanical chassis, a spindle motor for rotating a turn table on which a recording medium disk is supported, and a pickup movable in the radial direction of the recording medium disk supported by the turn table for reproducing and/or recording signals from and/or in the recording medium disk; a base chassis for supporting the drive unit via an elastic body; a self-aligning mechanism including a holder rotatable together with a rotor portion of the spindle motor and a balance member movable in the holder; and a counter weight disposed at a position suitable to allow the center of gravity of the drive unit to be located in conformity to or in proximity to the rotational center of the spindle motor.