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:
Aug. 17, 2004
Filed:
Dec. 28, 2001
Young Joong Kim, Seoul, KR;
Kwan Woo Park, Seongnam, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A disk clamping device for a disk drive having a hub insertable into a central hole of a disk which is capable of preventing the slip of the disk, even in a high speed rotation of the disk, by increasing the frictional force between a hub and the disk, wherein the disk clamping device includes a plurality of clamping grooves formed at the hub in a radial direction and respectively placed at regular angles and intervals centering around the hub, a plurality of springs respectively inserted into the plurality of clamping grooves, a plurality of balls respectively inserted into the plurality of clamping grooves, pushed toward the outer circumference of the hub by the plurality of springs and contacting to the disk when the hub is inserted into the central hole of the disk and a fluid provided inside the plurality of clamping grooves in order to increase the frictional force between the plurality of balls and the disk in accordance with the rotation of the disk and the hub.