Recording disk centering and clamping apparatus

Details Recording disk centering and clamping apparatus Recording disk centering and clamping apparatus

1988-02-09

1988-11-22

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 1703

Patent

active

047870796

ABSTRACT:
A rotary clamp or collet is mounted to a load arm for movement into and out of engagement with a motor driven hub for clamping and unclamping a flexible magnetic disk. The clamp comprises a tubular body portion, and a first and a second set of clamp segments of substantially identical shape arranged radially and alternately on the body portion. Each clamp segment has a deflectable bridge portion extending radially outwardly from the body portion and terminating in a centering portion to be engagement in a socket in the drive hub through a central hole in the magnetic disk, and a clamping portion for clamping the disk against an annular surface of the drive hub around the socket. The centering portions of the first set of clamp segments are slightly more in radius than the centering portions of the second set of clamp segments, and the bridge portions of the first set of clamp segments are more deflectable than the bridge portions of the second set of clamp segments. Consequently, the first set of clamp segments serve mainly for centering the disk on the drive hub whereas the second set of clamp segments serve mainly for clamping the disk to the drive hub.

REFERENCES:
patent: 3768815 (1973-10-01), Mathurin
patent: 4536867 (1985-08-01), Robinson
patent: 4618951 (1986-10-01), Okita et al.
patent: 4649445 (1987-03-01), Sheriff
patent: 4689782 (1987-08-01), Tsuchiya et al.

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