Window security device

Details Window security device Window security device

1985-02-19

1986-12-30

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

340541, 340626, 200 6193, G08B 1300

Patent

active

046332332

ABSTRACT:
A window security device adapted for use in a vacuum environment. The device includes a conductive seal in electrical communication with an alarm. When the vacuum is disturbed the seal falls out of contact with the alarm circuit, activating the alarm.

REFERENCES:
patent: 1974779 (1934-09-01), Lupold et al.
patent: 3441924 (1969-04-01), Peek et al.

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