Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1982-09-15
1985-02-19
Rowland, James L.
Communications: electrical
Condition responsive indicating system
With particular system function
340668, G08B 2900
Patent
active
045008736
ABSTRACT:
A taut wire intrusion detection system for a fence includes a testing device adapted to be actuated from a central station to apply a mechanical force to the fence wire in order to cause it to simulate an intrusion. The system further includes a testing circuit at the central station for actuating the testing device, and an indicator at the central station which receives the signal from the detector, and thereby indicates the actual response of the detector to the mechanical force.
REFERENCES:
patent: 2615970 (1952-10-01), Bagno
patent: 2798214 (1957-07-01), Rowell
patent: 3562730 (1971-02-01), Hill et al.
patent: 3781858 (1973-12-01), Lewis
patent: 4367459 (1983-01-01), Amir et al.
Porat Chaim
Sadeh Yaacov
Barish Benjamin J.
Beta Engineering & Development Ltd.
Rowland James L.
Tumm Brian R.
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