Magnetomechanical electronic article surveilliance marker with b

Details Magnetomechanical electronic article surveilliance marker with b Magnetomechanical electronic article surveilliance marker with b

1996-08-28

1998-03-17

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340592, G08B 23181

Patent

active

057292000

ABSTRACT:
A material used to form a biasing element for a magnetomechanical EAS marker has a coercivity that is lower than the coercivity of biasing elements used in conventional magnetomechanical markers. The marker formed with the low coercivity material can be deactivated by applying an AC magnetic field at a level that is lower than is required for deactivation of conventional markers. The marker with the low coercivity bias element can also be deactivated when at a greater distance from a deactivation device than was previously practical.

REFERENCES:
patent: 4510489 (1985-04-01), Anderson, III et al.
patent: 4510490 (1985-04-01), Anderson, III et al.
patent: 5469140 (1995-11-01), Liu et al.
patent: 5495230 (1996-02-01), Lian

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