Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1979-12-17
1981-08-25
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360106, G11B 2124, G11B 2108
Patent
active
042862981
ABSTRACT:
A preloaded head arm assembly comprises a lightweight, low inertia frustoconical arm support to which a magnetic head is mounted at one end. The other end of the head arm support is coupled to an end of a rotatable shaft, on which the arm support can be pivoted. An electrical coil which is disposed within a magnetic field supplied by permanent magnet means is fastened to the other end of the shaft. The pivotable magnetic head arm assembly may be vertically adjusted to control flying height and angularly adjusted relative to the surface of a magnetic disk to correct for azimuth variations.
REFERENCES:
patent: 3051954 (1962-08-01), Osterlund
patent: 3268877 (1966-08-01), Hagen
patent: 4196456 (1980-04-01), Manzke et al.
Dickie et al., "Disc File Actuator", IBM Tech. Disc. Bull., vol. 18, No. 10, Mar. 1976, p. 3435.
International Business Machines - Corporation
Kallman Nathan N.
Tupper Robert S.
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