Electronic article surveilance activator/deactivator and...

G - Physics – 08 – B

Patent

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Details

G08B 13/24 (2006.01)

Patent

CA 2647995

An electric motor, system and method for activating and deactivating an EAS article is disclosed. The electric motor has a stationary electromagnet having a center. The electric motor further has a platform located parallel to the electromagnet, wherein the platform rotates about a center concentric with the center of the electromagnet. The electric motor further has a first magnet with a first polarity located on the platform and a second magnet with a second polarity located on the platform radially opposite to the first magnet. The electric motor further has a commutator for periodically reversing current supplied to the electromagnet so as to produce a first magnetic field that interacts with the first and the second magnet and causes the platform to spin about its center. When the platform rotates, a second magnetic field for one of activation and deactivation of an EAS article is produced by the first and the second magnet.

La présente invention concerne un moteur électrique, un système et un procédé destinés à activer et à désactiver un article d'un système électronique de surveillance d'articles. Le moteur électrique comprend un électro-aimant fixe ayant un centre. Le moteur électrique comprend également une plateforme située parallèlement à l'électro-aimant, qui tourne autour d'un centre concentrique à celui de l'électro-aimant. Le moteur électrique comprend également un premier aimant d'une première polarité disposé sur la plateforme et un second aimant d'une seconde polarité placé sur la plateforme en position radialement opposée au premier aimant. Le moteur électrique comprend enfin un commutateur qui inverse périodiquement le courant alimentant l'électro-aimant afin de produire un premier champ magnétique qui interagit avec le premier et le second aimant et qui provoque une rotation de la plateforme autour de son centre. Lorsque la plateforme tourne, un second champ magnétique qui active ou désactive un article est produit par le premier et le second aimant.

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