Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-04-29
1995-08-08
Groody, James J.
Communications: electrical
Condition responsive indicating system
Specific condition
343867, 340551, G08B 1314, G08B 1324, H01Q 2100
Patent
active
054402964
ABSTRACT:
An antenna lattice for use in a magnetically based electronic article surveillance system. The lattice includes a field-producing coil assembly which includes a pair of trapezoidal-shaped segments, each having a diagonally extending lower portion, the segments being juxtaposed in a mirror image so that the diagonal portions are opposite each other. The segments are connected so that vertical components of the currents in the diagonal sections at least partially cancel. Preferably, top horizontal sections of each segment are located at different levels, thereby extending the upper coverage, and a detector coil preferably also juxtaposed extends above the top horizontal section of the field-producing coil to further extend the range of detection.
REFERENCES:
patent: 3665449 (1972-05-01), Elder et al.
patent: 3697996 (1972-10-01), Elder et al.
patent: 4135183 (1979-01-01), Heltemes
patent: 4135184 (1979-01-01), Pruzick
patent: 4274090 (1981-06-01), Cooper
patent: 4309697 (1982-01-01), Weaver
patent: 4326198 (1982-04-01), Novikoff
patent: 4623877 (1986-11-01), Buckens
patent: 4994939 (1991-02-01), Rubertus et al.
Bartingale Kari H.
Griswold Gary L.
Groody James J.
Kirn Walter N.
Miller John W.
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