Recording disk cover and player apparatus for removing cover

Details Recording disk cover and player apparatus for removing cover Recording disk cover and player apparatus for removing cover

1978-12-26

1981-06-16

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

206312, 360 99, 360133, G11B 5012, G11B 2302, G11B 2504

Patent

active

042741190

ABSTRACT:
A cover for a video record has a generally unbroken rectangular perimeter. A record player has permanent magnets that cooperate with paramagnetic inserts in the record cover to open the cover for loading and unloading a recording disk. The player has a clamp mechanism that enters the opened cover to clamp the disk for these operations.

REFERENCES:
patent: 3668658 (1972-06-01), Flores et al.
patent: 3836731 (1974-09-01), Wilisch et al.
patent: 3891796 (1975-06-01), Takahara et al.
patent: 3899181 (1975-08-01), Dannert et al.
patent: 3908824 (1975-09-01), Takahara et al.
patent: 3941391 (1976-03-01), Ohmiya et al.
patent: 4040106 (1977-08-01), Medley
patent: 4063286 (1977-12-01), Takahara et al.
patent: 4089029 (1978-05-01), Castrodale et al.
patent: 4124866 (1978-11-01), Coleman
patent: 4152739 (1979-05-01), DeMoss et al.

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