Disc-record player with pressure means for pressing a disc onto

Details Disc-record player with pressure means for pressing a disc onto Disc-record player with pressure means for pressing a disc onto

1984-05-02

1986-02-11

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

360 97, G11B 362, G11B 2504

Patent

active

045702551

ABSTRACT:
A disc-record player includes a pressure apparatus for pressing a disc onto a turntable. A mandril which is coaxial with the turntable engages the edge of a center hole in the disc. The pressure apparatus comprises rollers which can deflect elastically in a radial direction relative to the axis of rotation of the turntable and which are carried by a pressure member. The pressure member is axially movable relative to the mandril and acts on the disc at a radial distance from the center hole. The mandril comprises a conical guide wall whose diameter decreases towards the turntable and which cooperates with the rollers when downward pressing action occurs.

REFERENCES:
patent: 2762627 (1956-09-01), Johnson
patent: 4068851 (1978-01-01), Yamamura
patent: 4347599 (1982-08-01), Vitale
patent: 4387454 (1983-06-01), Yamamura et al.
patent: 4391543 (1983-07-01), Elsing

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