Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specific detail of storage medium support or motion production
Patent
1981-03-31
1983-06-07
Stephan, Steven L.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Specific detail of storage medium support or motion production
346137, 369 77, G11B 906, G11B 1920
Patent
active
043874541
ABSTRACT:
A reproducing apparatus reproducing a disc-shaped recording medium which is accommodated within a case. The case comprises a jacket which has a space for accommodating the disc-shaped recording medium and an opening for allowing the disc-shaped recording medium to go in and out of the jacket, and a lid member inserted through the opening of the jacket for closing the opening of the jacket, the reproducing apparatus comprises a holding mechanism for holding and leaving the disc-shaped recording medium inside the reproducing apparatus when the case is inserted into and then pulled out from within the reproducing apparatus in a direction opposite to the direction of the insertion and a clamping mechanism for clamping the disc-shaped recording medium on a turntable. The clamping mechanism comprises a support member which is unitarily rotatable with the turntable and capable of independently moving up and down with respect to the turntable, for supporting the disc-shaped recording medium at the vicinity of a center opening thereof, a moving mechanism for moving the support member upwards and downwards, clamping fingers provided in the support member, for pressing against the disc-shaped recording medium near the center opening thereof to clamp the disc-shaped recording medium on the turntable when operated, and an operating mechanism for rendering the clamping fingers into an operational state upon completion of the downward movement of the support member. The clamping fingers are positioned at an inoperative position when the support member is being raised.
REFERENCES:
patent: 3871663 (1975-03-01), Stave
patent: 3970317 (1976-07-01), Kirschner
patent: 4196906 (1980-04-01), Torrington
patent: 4218065 (1980-08-01), Van der Hoek et al.
Tajima Osamu
Yamamura Takashi
Bernat Louis
Stephan Steven L.
Victor Company of Japan Ltd.
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