Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1987-03-12
1988-08-16
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
340539, 340693, G08B 2500
Patent
active
047647574
ABSTRACT:
The security detection and location system includes a plurality of monitoring stations that are spaced from each other. Each monitoring station includes its own solar rechargeable battery, a receiver, an alarm circuit and a communications device such as a telephone dialer or a radio frequency (RF) transmitter. The security system operates in conjunction with a plurality of portable transmitters that can be actuated to transmit a distress signal by a person carrying one of the transmitters. When the portable transmitter issues a distress signal, the receiver in a monitoring station issues a command signal which activates two independent circuits, the alarm circuit and the communications circuit. The alarm circuit generates an audible sound in the locale of the monitoring station and the communications circuit sends a signal unique to that monitor to a central response or control unit.
REFERENCES:
patent: 3205482 (1965-09-01), Taylor, Jr. et al.
patent: 3449738 (1969-06-01), Chesnul et al.
patent: 4001805 (1977-01-01), Golbe
patent: 4288784 (1981-09-01), Fusco
patent: 4446454 (1984-05-01), Pyle
patent: 4692742 (1987-09-01), Raizen et al.
DeMarco Dennis D.
DeMarco Frank G.
Malloy John Cyril
Swann III Glen R.
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