Apparatus and process for multipolar magnetization of magnetic i

Details Apparatus and process for multipolar magnetization of magnetic i Apparatus and process for multipolar magnetization of magnetic i

1975-06-10

1977-05-03

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

For magnetizing or demagnetizing

335303, H01F 1300

Patent

active

040217639

ABSTRACT:
Apparatus for magnetizing selected areas of data storage plates, sheets or discs of the type wherein the stored data is represented by the location and arrangement of these magnetized areas, consists of a series of pole pieces which can be shifted into contact with the selected areas and simultaneously excited by a magnetic field. The process is also claimed.

REFERENCES:
patent: 2722617 (1955-11-01), Clumen et al.
patent: 2722636 (1955-11-01), Minchom
patent: 2764716 (1956-09-01), Minchom
patent: 3139567 (1964-06-01), Atkinson

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