Localized-field static magnetizing device

Details Localized-field static magnetizing device Localized-field static magnetizing device

Filed on

1978-02-23

Date issued

1980-03-18

Examiner

Cook, Daryl W.

Patent Class

Registers

SubClass

Coded record sensors

SubSubClass

Particular sensor structure

Other Related Categories

235493, 360 44, 360 55, 360110, G06K 708, G06K 1906, G11B 509, G11B 502

Type

Patent

Status

active

Patent number

041941101

Description

ABSTRACT:
A localized-field static magnetizing device consists of a non-magnetic substrate having a magnetic layer thereon that contains a succession of adjoining zones of alternately differing lengths and having magnetic inductions of alternately opposing directions. One of the lengths is much greater than the other and the magnetic layer has a high coercive field.

REFERENCES:
patent: 3025503 (1962-03-01), Perry
patent: 3100834 (1963-08-01), Demer
patent: 3409853 (1968-11-01), Guerth
patent: 3613101 (1971-10-01), Leonard et al.

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