Firefighting nozzle with foam injection system

Details Firefighting nozzle with foam injection system Firefighting nozzle with foam injection system

1993-12-06

1997-01-07

Pike, Andrew C.

Fire extinguishers

Special applications

With specific extinguishant applying means, or means for...

169 13, 239310, 239414, A62C 3112

Patent

active

055907199

ABSTRACT:
A firefighting nozzle includes a nozzle body having a having a centrally formed jet orifice at its outlet end. An annular fog spray opening concentrically surrounds the jet orifice. A jet control valve is provided for allowing selective variation of the diameter of the solid stream emitted from the jet orifice. A fog control valve is provided for selectively varying the intensity of the discharge from the fog spray opening. The jet control valve and the fog control valve are operable independently of and simultaneously with one another, so that either a variable diameter solid stream or a variable fog cone, or both, can be produced at once. Various remote control arrangements are available for actuating the jet and fog control valves. Foam injection systems are provided for inducing a foam concentrate at a low-pressure point within the nozzle. Accessories for securing the nozzle to a fixed object, for changing the direction of spray, and for allowing a hose to be lifted to reach otherwise inaccessible areas are also provided.

REFERENCES:
patent: 2089646 (1937-08-01), Friedrich
patent: 2130745 (1938-09-01), Rosenbauer
patent: 3607779 (1971-09-01), King et al.
patent: 5261494 (1993-11-01), McLoughlin et al.

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