Door gasket resistance based intrusion alarm system

Details Door gasket resistance based intrusion alarm system Door gasket resistance based intrusion alarm system

1998-04-29

1999-08-24

Mullen, Jr., Thomas J.

Communications: electrical

Condition responsive indicating system

Specific condition

174 35GC, 340539, G08B 1308

Patent

active

059429747

ABSTRACT:
The invention relates to an intrusion detection system which monitors the resistance of an outdoor equipment cabinet door gasket. The resistance of the door gasket is measured by a circuit to determine the integrity of the gasket and to determine whether the door has been tampered with.

REFERENCES:
patent: D278058 (1985-03-01), Larson
patent: 4643333 (1987-02-01), Martin
patent: 4691195 (1987-09-01), Sigelman et al.
patent: 4891626 (1990-01-01), Neuman
patent: 5070319 (1991-12-01), Scuka
patent: 5194691 (1993-03-01), McIlwraith
patent: 5262588 (1993-11-01), Gallagher
patent: 5774053 (1998-06-01), Porter
patent: 5798485 (1998-08-01), Rohde et al.

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