Multifunction nozzle

A multifunction nozzle, comprising:

• (a) a peripheral jet nozzle including a barrel and a plunger, said barrel having a bore formed therethrough and said plunger being movably mounted within said bore, said nozzle having a rearward end thereof adapted to be coupled during operation thereof to a source of fire extinguishing liquid and a forward end thereof adapted for the exit flow of the liquid, said plunger and said barrel being relatively movable between a straight stream position wherein the exit flow is generally straight and a fog position wherein the exit flow is generally conical;
• (b) a sleeve movably attached to and surrounding said jet nozzle and movable relative to said jet nozzle between retracted and extended positions, said sleeve when in said extended position extending forwardly from said forward end of said nozzle and around said exit flow and being in the path of said generally conical exit flow and out of the path of said straight exit flow, said sleeve in said extended position producing a forwardly deflected flow from said conical exit flow, and said sleeve when in said retracted position being rearward of said extended position and being out of the path of said straight and conical exit flow, wherein when said jet nozzle is in said fog position and said sleeve is in said extended position, said conical exit flow strikes said sleeve and an enclosed space is formed between said forward end of said jet nozzle, said sleeve and said conical exit flow.

A multifunction nozzle, comprising:

• (a) a peripheral jet nozzle adapted to receive a flow of liquid and being operable to produce a substantially straight stream exit flow or a conically divergent exit flow of the liquid;
• (b) a sleeve extending around said nozzle and being movable relative to said nozzle;
• (c) said peripheral jet nozzle being operable to produce a conically divergent flow and said sleeve being movable in the exit flow of the liquid and the liquid being deflected forwardly by said sleeve, whereby the flow of said liquid causes air adjacent to it to be moved along with it, thereby creating a partial vacuum within said sleeve;
• and
• (d) said partial vacuum within said sleeve inducing air from outside said sleeve to flow into said sleeve through said deflected flow of liquid;
• (e) whereby a liquid containing a foaming agent creates a foam from said conically divergent flow, and further including agitating means on said sleeve and located in the flow of the liquid.

A multifunction nozzle, comprising:

• (a) a peripheral jet nozzle adapted to receive a flow of liquid and being operable to produce a substantially straight stream exit flow or a conically divergent exit flow of the liquid;
• (b) a sleeve extending around said nozzle and being movable relative to said nozzle;
• (c) said peripheral jet nozzle being operable to produce a conically divergent flow and said sleeve being movable in the exit flow of the liquid and the liquid being deflected forwardly by said sleeve, whereby the flow of said liquid causes air adjacent to it to be moved along with it, thereby creating a partial vacuum within said sleeve;
• and
• (d) said partial vacuum within said sleeve inducing air from outside said sleeve to flow into said sleeve through said deflected flow of liquid;
• (e) whereby a liquid containing a foaming agent creates a foam from said conically divergent flow, wherein said peripheral jet nozzle includes barrel means and plunger means, said sleeve being movably attached to said barrel means.