Device for positioning objects of low mass

Details Device for positioning objects of low mass Device for positioning objects of low mass

1979-10-18

1982-03-30

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

310 13, G11B 2108

Patent

active

043227627

ABSTRACT:
A device for positioning objects of low mass, particularly magnetic heads over preselected tracks on at least one magnetic disc in a disc file in which there is provided a carriage, displaceable toward and away from the axis of rotation of the magnetic disc, which serves as carrier not only for the magnetic heads but also for the coil of a linear drive means, the said coil being a flat coil which projects into the working air gap of a magnet assembly comprising at least one flat magnet, the flat coil and magnet assembly being arranged in such a way that the force vector lies essentially in the plane in which the carriage is displaceably mounted.

REFERENCES:
patent: 3659124 (1972-04-01), Lathrop
patent: 3735163 (1973-05-01), Dijkstra
patent: 4150407 (1979-04-01), Dijkstra
IBM Tech. Disc. Bull., R. W. Lissner et al., Disk File Actuator, vol. 17, No. 10, Mar. 1975, pp. 3016-3018.
O. E. Olbrich, Positionierer fur Plattenspeicher, Feinwerktechnik and Micronic, No. 4, 77, 1973, pp. 151-157.

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