Magnetic marker having switching section for use in electronic a

Details Magnetic marker having switching section for use in electronic a Magnetic marker having switching section for use in electronic a

1986-09-19

1987-12-01

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340551, G08B 1318

Patent

active

047107545

ABSTRACT:
A magnetic marker for use with electronic article surveillance systems in which a very high order harmonic response is obtained with postage-stamp sized pieces of high permeability material shaped to have a narrow switching section within which flux is concentrated by larger sections on each end of the switching section, the concentrated flux being sufficient to result in a high harmonic response.

REFERENCES:
patent: 3665449 (1972-05-01), Elder et al.
patent: 3747086 (1973-07-01), Peterson
patent: 3790945 (1974-02-01), Fearon
patent: 4074249 (1978-02-01), Minasy
patent: 4075618 (1978-02-01), Montean
patent: 4249167 (1981-02-01), Purinton et al.
patent: 4300183 (1981-11-01), Richardson

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