Firefighter locator with activator

Details Firefighter locator with activator Firefighter locator with activator

2007-12-04

2007-12-04

Lee, Benjamin C. (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S870030, C455S100000, C128S201280

Reexamination Certificate

active

10371629

ABSTRACT:
A device for activating a signal emitter for use in a firefighter locator system operates in conjunction with the firefighter's self-contained breathing apparatus (SCBA). The activation device includes a pressure sensor to monitor pressure on an air line that delivers air from the SCBA air tank to the SCBA air regulator. When the firefighter opens the SCBA air tank valve, pressure is sensed in the air line and the emitter is activated to transmit a signal. The signal is received by base stations that then use the signal to locate/track the signal emitter. Preferably, the activating system also includes a user operated reset button(s) and a shutoff circuit to allow the user to stop transmission of the signal by the signal emitter. The shutoff circuit is designed to stop transmission of the signal only after the air line has been depressurized and the reset button(s) is depressed.

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Matthew S. Reynolds; A Phase Measurement Radio Positioning System for Indoor Use; Thesis; Massachusetts Institute of Technology; Jul. 15, 1999.

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