Magnetization of permanent magnet strip materials

Details Magnetization of permanent magnet strip materials Magnetization of permanent magnet strip materials

1992-05-08

1995-06-13

Tolin, Gerald P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

For magnetizing or demagnetizing

H01F 720, H01F 1300

Patent

active

054247039

ABSTRACT:
Disclosed is an apparatus and process for magnetizing permanently magnetizable strip and sheet material to form a pattern of band-like poles on the material. Two parallel stacks of permanent magnets are used, each magnet in each stack having a direction of magnetization which is perpendicular to a slot-like air gap between the stacks. The magnets in each stack are parallel to one another, with unlike poles of adjoining magnets proximate so that they mutually attract one another. Unlike poles of the respective magnets in opposite stacks are positioned diametrically opposite each other across the air gap. The apparatus does not use electromagnetic coils and can form very narrow, contiguous band-like poles on magnetizable sheet or strip material which is passed through the air gap.

REFERENCES:
patent: 2187240 (1940-01-01), Karasick
patent: 3127544 (1964-03-01), Blume, Jr.
patent: 4379276 (1983-04-01), Bouchara et al.
patent: 4800353 (1989-01-01), Csonka
patent: 4829276 (1989-05-01), Leupold
patent: 4946590 (1990-08-01), Hertzog
patent: 4999106 (1991-03-01), Schindler
patent: 5107238 (1992-04-01), Leupold
patent: 5160877 (1992-11-01), Fujiwara
R. Bozworth, Ferromagnetism, "Materials For 1/4er, amemt Magnets", D. van Norstrand, 1951, pp. 360-362.

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