Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Disk record
Patent
1977-09-23
1979-02-13
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head moving during transducing
Disk record
360 75, 360105, G11B 1700, G11B 2108, G11B 2504
Patent
active
041398742
ABSTRACT:
The apparatus of this invention has an electric motor assembled integrally with a motor brake for rotating a magnetic disc, a rocking arm fitted at its tip end with a magnetic head, and a rotary solenoid to shift the magnetic head by getting engaged with the rocking arm, energized by a spring so as to rock in one direction, and is so constructed as to stop and lock the electric motor and the magnetic disc by operation of the motor brake, when power is cut off, and to turn the rocking arm until the rocking portion of the rotary solenoid is rotated in said one direction by the force of the spring to shift and lock the magnetic head to a landing zone defined within the magnetic disc, thus preventing the magnetic head and the magnetic disc from rubbing or running against each other when the power is cut off.
REFERENCES:
patent: 3050585 (1962-08-01), Zimmermann
patent: 3518651 (1970-06-01), Keeney
patent: 3710357 (1973-01-01), Buslik
patent: 3896491 (1975-07-01), Soehring et al.
patent: 3922717 (1975-11-01), Zimmermann
Eddleman Alfred H.
Tokyo Shibaura Electric Co. Ltd.
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