Patent ID: 7793735

Claim:
Apparatus for fighting a fire wherein fuel for said fire is confined to an area, said apparatus comprising a container comprising a rigid outer body, a flexible bladder contained within said rigid outer body, and a charge of gaseous propellant contained in an ullage which exists between said rigid outer body and said flexible bladder, said flexible bladder containing a composition comprising a liquid fire extinguishing composition, said liquid fire extinguishing composition comprising and having a viscosity substantially determined by at least 20% v/v of one or more potassium or aluminum salts of an organic acid or a combination of potassium and/or aluminum and an organic acid, said liquid fire extinguishing composition further comprising an efficacious amount of IXF to enhance fire extinction and function as a wetting agent, said fire extinguishing composition being under pressure and a nozzle capable of spraying droplets of said liquid fire extinguishing composition such that, under effects of droplet momentum, aerodynamic drag on droplets due to droplet size, acceleration of droplets due to gravity, lifting or suspension of droplets by convection air currents due to heat of a fire, evaporation of water from the droplets and agglomeration of the droplets which contact each other, a substantially stationary cloud of droplets is formed on or above an area exceeding said area to which said fuel is confined when sprayed from a range of two to seven feet; said droplets settling over said area to which said fuel is confined as they agglomerate due to contact with each other and increase in volume in excess of a rate that water is evaporated therefrom; said nozzle being elliptical or oval and having a long dimension of about 0.055 inches and a short dimension of about 0.020 inches.