Disc player for a rigid information-carrying disc

Details Disc player for a rigid information-carrying disc Disc player for a rigid information-carrying disc

1983-03-28

1985-04-30

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369 751, G11B 516, G11B 2504

Patent

active

045148392

ABSTRACT:
The invention relates to a disc player for a rigid information-carrying disc, which player has a disc holder on which the disc rotates during information transfer, the disc holder comprising a turntable and a centering device, which device comprises a plurality of centering elements which are arranged along a circle, which are each resiliently movable in a radial direction in order to keep the disc centered during rotation by means of the centering elements which act on the wall of the center hole in the disc. A lid which is movable from an open to a closed position in two stages carries a disc loader and is coupled to lifting means. After the disc loader has resiliently urged the disc onto the centering device and the turntable in a first stage, the lifting means lift the lid in a second stage until the disc loader is clear of the disc which is clamped on the centering device. The resilient centering elements firmly retain the disc on the turntable as a result of their radial elastic deflection.

REFERENCES:
patent: 3223422 (1965-12-01), Ernst
patent: 3436082 (1969-04-01), Bostrom et al.
patent: 3940793 (1976-02-01), Bleiman
patent: 4408318 (1983-10-01), Sugiura
patent: 4416003 (1983-11-01), Suzuki
patent: 4420830 (1983-12-01), Green

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