Multiple function personal security alarm

Details Multiple function personal security alarm Multiple function personal security alarm

1981-02-20

1984-03-20

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340517, 340528, 340541, 340546, 340549, 340586, 340628, 340630, G08B 1900, G08B 1700

Patent

active

044384289

ABSTRACT:
A multiple function alarm (10) for the security of an individual within a preselected area, the alarm (10) having substantially all its electrical components mounted to a board (12), includes a switch (14) for selecting the function the alarm is to perform; a smoke detector (16) for optically detecting the presence of smoke including a light source (72) for generating light and a light sensor (73) both mounted on the board (12); intrusion detector (15) for detecting an unauthorized intrusion into the selected area, a visual alarm (18) and audio alarm (19) for communicating to the individual the presence of a potential security threat; and a plate assembly (13) for housing switch (14), the intrusion detector (15) and the alarms (18, 19) in operative association with the electrical components mounted to the board (12). Plate assembly (13) defines an opaque chamber (74) for controlling the transmission of light from the light source (72) to the light sensor (73) dependent upon the amount of smoke in the opaque chamber (74), light source (72) and light sensor (73) communicating with opaque chamber (74).

REFERENCES:
patent: 3768086 (1973-10-01), Powell et al.
patent: 4230950 (1980-10-01), Forss et al.
patent: 4258359 (1981-03-01), McLamb
patent: 4306229 (1981-12-01), Tamura et al.

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