Electrodynamic balance for a detection

Details Electrodynamic balance for a detection Electrodynamic balance for a detection

1979-10-19

1982-10-12

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340515, 340551, 340552, G08B 1318

Patent

active

043541780

ABSTRACT:
A balance system detects ferrous or non-ferrous metallic objects carried by people or present in certain articles. This balance consists in the generation of a fixed oblique magnetic field of detection, substantially constant, whatever the orientation or positioning of the objects to be detected in the search area. The balance in combination with a search gate, includes a transmitting coil and a receiving coil, each having an L-shape, inverted relative to each other.

REFERENCES:
patent: 3493955 (1970-02-01), Minasu
patent: 3652928 (1972-03-01), Mansfield
patent: 3686564 (1972-08-01), Mallick, Jr. et al.
patent: 4012690 (1977-03-01), Heytow
patent: 4118693 (1978-10-01), Novikoff
patent: 4223302 (1980-09-01), Hocking

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