Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1994-08-30
1996-01-23
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9808, 360 9905, G11B 1702
Patent
active
054869617
ABSTRACT:
A clamp for securing one or more data storage disks to a hub is formed as a slightly frusto-conical shaped annulus of resilient material with inwardly and upwardly extending lobes that are displaced radially outward during installation about a hub. Clamping force is derived from the compression of the lobes which are captured by the hub and the twisting of the annulus from the frusto-conical configuration to a substantially radial orientation. The clamp is formed of a material that is softer than the disk to cause the clamp to be compliant and conform to the disk irregularities and thereby avoid compromising disk flatness. The clamp component material composition is also modified to achieve a coefficient of linear expansion that is identical to the disk. The outer periphery of the clamp presents an interrupted flange that permits a tool to engage the clamp, perform the assembly about the hub and be disengaged using automated equipment.
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Bornhorst Randy J.
Boutaghou Zine-Eddine
Johnson Douglas W.
Bussan Matthew J.
International Business Machines - Corporation
Lahtinen Robert W.
Truelson Roy W.
Wolff John H.
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