Apparatus for holding record disks by vacuum

Details Apparatus for holding record disks by vacuum Apparatus for holding record disks by vacuum

1981-05-04

1983-01-04

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

346137, 360 86, 360 97, G11B 360

Patent

active

043675476

ABSTRACT:
An apparatus for holding a record disk in fixed position on a turntable while the record is being played. The apparatus includes an air seal and a foraminous pad mounted on a turntable which engages the bottom of the record and a vacuum chuck with a rotatable fitting which is connected to a source of vacuum and is mounted on top of the record so that a vacuum is applied to the bottom of the record disk through the central opening by a fixture located above the record.

REFERENCES:
patent: 793140 (1905-06-01), Manwaring
patent: 1062579 (1913-05-01), Aylsworth
patent: 2146519 (1939-02-01), Zimmerman
patent: 2601301 (1952-06-01), Klein et al.
patent: 3313548 (1967-04-01), Moore et al.
patent: 3608909 (1971-09-01), Rabinow
patent: 3936880 (1976-02-01), McGinnis et al.
patent: 3980308 (1976-09-01), Camerik et al.
patent: 4065135 (1977-12-01), Doughty
patent: 4234195 (1980-11-01), Shibata

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