Portable intrusion alarm

Details Portable intrusion alarm Portable intrusion alarm

1980-05-28

1982-03-09

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

With particular system function

340546, 340547, 340554, 340693, G08B 1300, G08B 1308, G08B 1318

Patent

active

043192289

ABSTRACT:
An intrusion alarm is provided in a compact enclosure permitting its movement from location to location as needed. The alarm includes one or more motion detectors, some of which may be battery operated, one or more alarm devices, such as horns, sirens, etc., door switches and appropriate relays for operating the system. A battery back up system insures that the alarm is always activated.

REFERENCES:
patent: 2670466 (1954-02-01), Harper
patent: 2851680 (1958-09-01), Cavera
patent: 3439357 (1969-04-01), De Gibaja
patent: 3540043 (1970-11-01), Crosthwait
patent: 3634846 (1972-01-01), Fogiel
patent: 3680074 (1972-07-01), Lieser
patent: 3691558 (1972-09-01), Hoard et al.
patent: 3746878 (1973-07-01), Viger, Jr.
patent: 3908180 (1975-09-01), Braginsky
patent: 3924254 (1975-12-01), Klebold et al.

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