Location transmitting system

Details Location transmitting system Location transmitting system

1980-04-14

1981-10-20

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340305, 340306, 340307, 340312, 455 95, 455 99, 455100, 455127, 455128, 455351, 361172, G08B 108, H04Q 700

Patent

active

042964083

ABSTRACT:
A location transmitting system for use by one or more guards in a security system. Encoders are located at predetermined reporting locations which have no power supplies. Each guard carries a walkie-talkie radio transmitter which he places in a receptacle at the reporting location, energizing the encoder through external terminals in the receptacle which mate with external terminals of the walkie-talkie and its power supply.

REFERENCES:
patent: 3573620 (1971-04-01), Ashley
patent: 3577079 (1971-05-01), Horstmann
patent: 3579221 (1971-05-01), Ashley
patent: 3990067 (1976-11-01), Van Dusen et al.

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