US 11,756,583 B2
Removable disk clamp for read-write device in archival data storage library
Toshiki Hirano, San Jose, CA (US)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Sep. 3, 2021, as Appl. No. 17/465,848.
Prior Publication US 2023/0075577 A1, Mar. 9, 2023
Int. Cl. G11B 17/028 (2006.01); G11B 19/20 (2006.01); G11B 33/14 (2006.01); G11B 21/22 (2006.01); G11B 5/55 (2006.01); G11B 33/04 (2006.01)
CPC G11B 17/028 (2013.01) [G11B 17/0282 (2013.01); G11B 17/0284 (2013.01); G11B 19/2009 (2013.01); G11B 5/5526 (2013.01); G11B 21/22 (2013.01); G11B 33/0461 (2013.01); G11B 33/1446 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A removable disk clamp assembly for mounting disk media on a motor-driven spindle, the disk clamp assembly comprising:
a disk clamp comprising a vacuum mechanism comprising one or more through-holes extending from the top of the disk clamp through to the bottom of the disk clamp and configured for receiving vacuum pressure and applying the pressure to where the disk clamp mates with a surface of the disk media for temporarily holding the disk media and the disk clamp on a robotic machine; and
a mechanism for generating a predetermined force to press the disk media to a flange of the spindle, the mechanism for generating comprising a magnetic mechanism comprising:
a permanent magnet disposed within the disk clamp,
a first magnetic material disposed within the disk clamp on one side of the permanent magnet, at least in part enveloping the permanent magnet on all but one side of the permanent magnet, and
a second magnetic material fixed to the spindle on an opposing side of the permanent magnet;
wherein the mechanism for generating is configured such that the predetermined force can be repeatedly overcome by an applied counterforce to remove the disk clamp from engagement with a hub of the spindle.