Centering of a disc-shaped record carrier on a turntable

Details Centering of a disc-shaped record carrier on a turntable Centering of a disc-shaped record carrier on a turntable

1980-10-02

1982-09-21

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 360, G01B 2504

Patent

active

043510477

ABSTRACT:
A device for centering a record disc with respect to a turntable, in which the disc is successively radially centered and axially positioned relative to the turntable, which device includes a centering shaft engageable with the disc to effect preliminary radial centering thereof, is additionally provided with further radial centering elements mounted to engage a disc after it has engaged the shaft and to undergo yieldable movement relative to the turntable in the axial direction of the disc under the influence of its engagement with the disc for effecting final radial centering of the disc, and a magnetic attracting unit operatively associated with the disc and the turntable for axially positioning the disc after it has been finally radially centered.

REFERENCES:
patent: 3867724 (1975-02-01), Bruer et al.
patent: 4218065 (1980-08-01), Van der Hoek et al.
patent: 4256312 (1981-03-01), Ikeda

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