Bernoulli plate for stabilization of flexible magnetic disk

Details Bernoulli plate for stabilization of flexible magnetic disk Bernoulli plate for stabilization of flexible magnetic disk

1981-04-24

1983-12-06

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 99, G11B 360, G11B 1732

Patent

active

044197047

ABSTRACT:
An improved Bernoulli plate for juxtaposition to a rotating flexible magnetic disk so that the disk is rendered substantially rigid by a vacuum formed by the air between the plate and the disk being urged outwardly under the influence of centrifugal force is disclosed. The plate is formed by coining a metal substrate and thereafter electroplating the coined substrate so that any sharp irregularities resulting from the coining operation are smoothed, while the surface is provided with a hard, wear-resistant coating.

REFERENCES:
patent: 3900893 (1975-08-01), Hirose et al.
patent: 4120505 (1978-10-01), Cox et al.
patent: 4183069 (1980-01-01), Roullet et al.

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