Security method and system

Details Security method and system Security method and system

1979-01-30

1980-10-14

McQuade, John

Geometrical instruments

339176M, 340545, 340550, G08B 1308

Patent

active

042277663

ABSTRACT:
The present invention discloses a method for interconnecting a plurality of security surfaces into a main alarm line. The method includes the steps of: placing a strip of electrically conductive foil about the periphery of each protected security surface; disposing a single-throw double-pole switch between adjacent, partially overlapping security surfaces which are movable with respect to each other; mutually connecting the peripherally disposed conductive strips of adjacent security surfaces so as to form a single circuit loop from the conductive strips placed about the periphery of adjacent security surfaces, the connection across adjacent surfaces occurring through the single-throw double-pole switch; and connecting the output of each of the single circuit loops formed through the use of the double-pole switch to the main alarm line. Further, the single-throw double-pole switch exhibits a novel structure which facilitates its usage in the present security method.

REFERENCES:
patent: 2885652 (1959-05-01), Rowe
patent: 3911414 (1975-10-01), Bowling
patent: 3924256 (1975-12-01), Cohen
patent: 4097109 (1978-06-01), Cross

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