Disguised beam-break security system

Details Disguised beam-break security system Disguised beam-break security system

1989-06-30

1990-12-18

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

250221, 340693, G08B 1318

Patent

active

049789422

ABSTRACT:
A station is provided with an external industrial container-shaped shell having a window therein for admitting the passage of a monitoring beam therethrough. The preferably infrared beam is initiated by a beam transmitter having a lens aimed at a corresponding beam receiver in a second station, the stations being adapted for employment in pairs. Interruption of the beam by either an intruder passing between the pair of stations or tampering with a barrel causes a signal to be transmitted to a remote alarm. The housing is designed to be inconspicuous so that an intruder will not locate the station and thereby avoid detection.

REFERENCES:
patent: 3205482 (1965-09-01), Taylor, Jr. et al.
patent: 3619629 (1971-11-01), Matthews
patent: 3688298 (1972-08-01), Miller et al.
patent: 3711846 (1973-01-01), Schlisser et al.

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