Swinging actuators for use in magnetic disc type memory devices

Details Swinging actuators for use in magnetic disc type memory devices Swinging actuators for use in magnetic disc type memory devices

1982-07-20

1985-10-01

Kilgore, Robert M.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360106, G11B 554, G11B 2108, G11B 555

Patent

active

045449724

ABSTRACT:
A magnetic disc type memory device swinging actuator is constituted by a plurality of a driving assemblies juxtaposed on a stationary shaft and extending in the opposite direction. Each driving assembly include a head arm, a magnetic head mounted on one end of the head arm, a coil supporting member for supporting a flat coil and extending in the opposite direction to the head arm, and first and second permanent magnets spaced from the coil in an axial direction of the shaft and also spaced in a direction of arrangement of the flat coil. The first and second permanent magnets are magnetized in the axial direction of the shaft so that poles of opposite polarities confront the flat coil. The first and second permanent magnets are mounted on a common yoke and the flat coils are disposed in a closed magnetic flux path including the first and second permanent magnets and the yokes.

REFERENCES:
patent: 4075517 (1978-02-01), Adler
patent: 4136293 (1979-01-01), Patel
patent: 4190870 (1980-02-01), Avina et al.
patent: 4285018 (1981-08-01), Mulvany et al.
patent: 4300176 (1981-11-01), Gilovich
patent: 4331991 (1982-05-01), Morehouse

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