Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle
Patent
1994-08-05
1996-11-05
Hofsass, Jeffery
Communications: electrical
External condition vehicle-mounted indicator or alarm
Transmitter in another vehicle
340901, 340904, 455 45, G08G 100
Patent
active
055722016
ABSTRACT:
A warning system for alerting a person to an emergency situation which includes a transmitter responsive to a visual or acoustic alerting system for transmitting an alarm signal on an RF carrier and a control signal on a sideband of the carrier. A tuneable receiver for receiving commercial broadcasts in a normal operating mode transfers to an emergency mode upon detection of the control signal and converts the alarm signal to an acoustic signal. In one embodiment, the visual or acoustic alerting system is a siren and light system of an emergency vehicle. In this embodiment, a transceiver is preferably included for dedicated communications among emergency vehicles. The range of both the transmitter and transceiver complement and are substantially the same as the effective range of the visual or acoustic alerting system.
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Graham Paul D.
Sink Gregory A.
Williams Jerry L.
Federal Signal Corporation
Hofsass Jeffery
Pope Daryl
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