Communications: electrical – Systems – Call station
Patent
1974-05-23
1976-02-10
Habecker, Thomas B.
Communications: electrical
Systems
Call station
340240, G08B 2100
Patent
active
039381242
ABSTRACT:
An alarm sensor device of two major portions. The first portion is a securely enclosed chamber containing one or more connector elements and the second portion is a specific length of cable having conductor paths for energy transmission and having at least one connector device attached to at least one free end of the cable with the connector being compatible with the connector element installed within the enclosed chamber. Separate and additional means for interconnection of the conductors within the chamber to conductors of energy originating from alarm system equipment at a remote location is also provided. The specific length of cable securely emanates from and thereafter terminates by connector means within the enclosed chamber thereby forming a closed loop of fixed and unalterable circumference thereby providing a loop to protectively encircle an object. Any attempt to enlarge the fixed circumference of the closed loop of cable for the purpose of removing it from the object will cause an alteration of the pattern of energy flowing within the cables thereby causing a remote detection of attempted theft and allowing the activation of an alarm signal warning system.
REFERENCES:
patent: 342709 (1886-05-01), Ruenzi
patent: 883335 (1908-03-01), O'Conner
patent: 2927311 (1960-03-01), Donaldson
patent: 2972132 (1961-02-01), Putney
patent: 3193819 (1965-07-01), Magner
patent: 3253270 (1966-05-01), Downer
patent: 3596265 (1971-07-01), Garland
patent: 3753257 (1973-08-01), Arnold
Scholtz William R.
Way Blaine A.
Habecker Thomas B.
Salient Electronics, Inc.
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