Magnetic transducer positioning apparatus

Details Magnetic transducer positioning apparatus Magnetic transducer positioning apparatus

1983-02-01

1985-06-18

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360109, G11B 555, G11B 2108

Patent

active

045244006

ABSTRACT:
A movable carriage carrying magnetic transducer head is positioned at predetermined points adjacent a floppy disc surface for appropriate reading/writing of data thereon. The transducers are positioned by a permanent magnet stepping motor which rotates a cam shaft. The cam surfaces on the shaft drive a plurality of balls into engagement with opposed racks defining "V"-shaped notches of different pitches formed on a surface of the carriage and on a fixed surface adjacent thereto. As the balls sequentially enter the "V"-shaped notches, they force individual pairs thereof into alignment, the carriage and thus the transducer means are sequentially and discretely positioned at predetermined data track positions on the floppy disc.

REFERENCES:
patent: 3818500 (1974-06-01), Lemelson
patent: 3859662 (1975-01-01), Habich et al.
patent: 4131923 (1978-12-01), Wachs et al.
patent: 4261222 (1981-04-01), Dattilo
patent: 4270155 (1981-05-01), Bejerano
patent: 4428012 (1984-01-01), Applequist et al.

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