Window security device

Details Window security device Window security device

1987-07-13

1988-07-05

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

200 6193, 200 83N, 340541, 340544, 340626, G08B 1304, G08B 1320

Patent

active

047558008

ABSTRACT:
A window security device which operates on differential gas pressure theory to trigger an alarm upon pressure equalization. A plug which completes the electric activator circuit includes biasing springs or similar devices to urge the plug out of contact with the activator circuit to trigger the alarm upon disturbance or breakage of one of the window glazing panels.

REFERENCES:
patent: 1974779 (1934-09-01), Lupold et al.
patent: 3441924 (1969-04-01), Peek et al.
patent: 3594763 (1971-07-01), Peek
patent: 4633233 (1986-12-01), Marshall et al.

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