Tamper sensor system

Details Tamper sensor system Tamper sensor system

1980-09-18

1982-05-11

Waring, Alvin H.

Communications: electrical

Condition responsive indicating system

Specific condition

340533, 340572, 340652, 340687, G08B 1322, B60R 2510

Patent

active

043296815

ABSTRACT:
An adjustable tamper sensor system for bolts and screws, which connect a non-conductive base and cover, provides a secure housing. An electrically conductive wire and a resistive element in the cover are coupled to the screws and to a resistive bridge alarm circuit. The resistive element in the sensor cover maintains a balanced circuit, and is shunted by any object with less electrical resistance, causing an alarm to report. If an attempt is made to saw through a bolt securing the cover, the conductive wire will be severed or shorted, activating the alarm. The tamper sensor may actually comprise the housing to form a condition responsive detector.
In a more simple embodiment, the tamper sensor may protectively conceal any bolt or screw attached to any object.

REFERENCES:
patent: 3803577 (1974-04-01), Peterson

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