Apparatus for shifting the magnetic read/write head carriage in

Details Apparatus for shifting the magnetic read/write head carriage in Apparatus for shifting the magnetic read/write head carriage in

1980-01-11

1982-02-09

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 2108, G11B 555

Patent

active

043152902

ABSTRACT:
A floppy disk magnetic information storage and retrieval unit having a magnetic read/write head carriage and apparatus for shifting the carriage radially with respect to the floppy disk to effect data transfer with selectable tracks on the disk. The carriage shifting apparatus includes a lead screw shaft; a carriage nut arranged on the shaft and moveable axially when the shaft is rotated; and a stepper motor having a permanent magnet rotor arranged coaxially with, and rigidly attached to one end of the shaft. Two bearings are provided to hold the shaft and rotor combination at opposite ends of the shaft.

REFERENCES:
patent: 3950783 (1976-04-01), Herring et al.
patent: 4134143 (1979-01-01), Ragle et al.
patent: 4139877 (1979-02-01), Townsend

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