Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Patent
1990-04-11
1991-09-17
Picard, Leo P.
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
174254, 174251, 174259, 361406, 340506, 340550, 109 42, H05K 100
Patent
active
050497049
ABSTRACT:
An electrical conductor element in the form of a flexible or rigid sheet is provided for detecting attempts to break into a space where valuables or money are being stored, such as a strongroom or the coin container of a slot machine. The base material of the element is in the form of a woven or non-woven material or of plastic sheeting, and the electrical conductor is in the form of wire such as enameled copper wire for electrical connection with an alarm system. The conductor is secured in place by stitching, that is to say the wire is either formed into penetrating stitches by being fed from the needle or shuttle of a sewing machine or it is fed from a stationary part of the sewing machine so as to be fixed in place by stitches or conventional textile yarn or thread. When the conductor is interrupted by drilling, sawing or the like the alarm system is activated.
REFERENCES:
patent: 1142393 (1915-06-01), Bloomer
patent: 3130257 (1964-04-01), Rott
patent: 3946143 (1976-03-01), McLoughlin
patent: 4310811 (1982-01-01), Currie
patent: 4799435 (1989-01-01), Boutroy
Korka Trinidad
Picard Leo P.
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