Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specific detail of storage medium support or motion production
Patent
1989-10-10
1991-09-10
Levy, Stuart S.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Specific detail of storage medium support or motion production
369271, 360 9904, 360 9905, 360 9912, G11B 2300, G11B 2500
Patent
active
050480057
ABSTRACT:
A spindle clamp for suppporting a data disk, wherein the spindle clamp includes a hub mounted for rotation about a central axis. The upper portion of the hub has a frustroconically-shaped bearing surface and has a disk-seating surface at the base of the bearing surface. A lock member has a downwardly-depending portion which is axially mounted such that the lower extremity of the lock member contacts the frustroconically-shaped bearing surface. The lock member is a unitary, cup-shaped member made of an elastically flexible material and preferably includes a plurality of axially-arranged fingers. Pneumatic or mechanical actuation of a piston within the hub is translated to the lock member to cause movement from a disk-releasing position to a disk-clamping position. Downward movement of the piston draws the lower extremities of the fingers along the bearing surface of the hub until the lock member reaches the disk-clamping position in which the fingers press a data disk against the disk-seating surface of the hub. A spring is utilized to bias the lock member in the disk-clamping position.
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Levy Stuart S.
Wells Kenneth B.
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