Disc rotating apparatus

Details Disc rotating apparatus Disc rotating apparatus

1982-07-19

1985-02-12

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369 752, 369266, 360133, G11B 360, G11B 2504, G11B 2300

Patent

active

044995733

ABSTRACT:
A disc rotating apparatus for use in a dic player. The disc rotating apparatus is provided with a turntable adapted for receiving a disc and a clamping mechanism for clamping the disc against the turntable in cooperation with the turntable. The disc clamping mechanism includes a plunger slidable along an axis of the plunger and rotatable about the same axis, a holder for holding the plunger and a magnetic propelling mechanism for propelling the plunger toward the disc received on the turntable. The magnetic propelling mechanism urges the plunger against the disc by means of magnetic force caused by a permanent magnet.

REFERENCES:
patent: 3156472 (1964-11-01), Brock
patent: 3193295 (1965-07-01), Isemura
patent: 3768815 (1973-10-01), Mathurin
patent: 3891796 (1975-06-01), Takahara et al.
patent: 4068851 (1978-01-01), Yamamura
patent: 4194743 (1980-03-01), Ohsawa et al.
patent: 4232870 (1980-11-01), Iemenschot
patent: 4306259 (1981-12-01), Saito et al.

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