ACOUSTOMAGNETIC LABEL DEACTIVATOR Russian patent published in 2008 - IPC G08B13/14 

FIELD: physics.

SUBSTANCE: common deactivator, e.g. Sensormatic, comprising nonmagnetic case with bottom covered by glue plate and magnetostaticfield sources provided on magnetic substrate inside the case and forming periodic multipolar structure in the form of chess board with alternating polarity of specified size, and front panel, is modified as follows: each extreme pole of multipolar structure in the form of chess board, perpendicular to its sides, has the cluster of three poles with alternating polarity, two extreme poles of the cluster having the polarity opposite to that of the pole forming magnetic field in the form of chess board on which the cluster is provided, white polarity of central pole of the cluster coincides with its polarity.

EFFECT: elimination of additional power supply as well as of complication of contact deactivator design.

4 cl, 5 dwg