Desensitizing apparatus for electromagnetic article surveillance

Details Desensitizing apparatus for electromagnetic article surveillance Desensitizing apparatus for electromagnetic article surveillance

1992-09-03

1994-02-08

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

For magnetizing or demagnetizing

340551, H01F 720

Patent

active

052851826

ABSTRACT:
A desensitizing apparatus for magnetizing a desensitizable marker used with an electromagnetic article surveillance system. The apparatus includes a rectangular, non-metallic plate positioned so that its length is perpendicular to a likely direction of travel of the marker to be magnetized. A row of X-shaped arrays of elongated magnets is embedded on the plate. A marker passing over the row of magnets will be desensitized regardless of its orientation or direction of travel over the magnets.

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