Electronic article surveillance activator/deactivator and...

Details Electronic article surveillance activator/deactivator and... Electronic article surveillance activator/deactivator and...

2006-04-05

2010-11-09

Tweel, Jr., John A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572300, C335S284000

Reexamination Certificate

active

07830255

ABSTRACT:
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.

REFERENCES:
patent: 5594420 (1997-01-01), Copeland et al.
patent: 5917412 (1999-06-01), Martin
patent: 6057763 (2000-05-01), Brace et al.
patent: 6967578 (2005-11-01), Guida
patent: 7068172 (2006-06-01), Yang et al.
patent: 2009/0212952 (2009-08-01), Yang

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