Method and apparatus for deactivating targets used in...

Details Method and apparatus for deactivating targets used in... Method and apparatus for deactivating targets used in...

G - Physics

08

B

340/124.3

G08B 13/24 (2006.01)

Patent

CA 1272264

ABSTRACT OF THE DISCLOSURE A deactivator for deactivating targets used in electromagnetic article surveillance systems comprises a solid element with a convexly curved outer surface, e.g., a cylinder and a plurality of permanent magnets which form a pattern of variously directed magnetic fields in a plane adjacent the surface. The curved surface of the deactivator is rolled over a target to be deactivated. The magnets are also arranged in adjacent layers with the magnets of one layer extending in a different direction from the magnets of the other layer to form a composite magnetic pattern which is discontinuous in all directions.

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