Patent ID: 8505640

Claim:
Apparatus for fighting a fire wherein fuel for said fire is confined to an area approximating a cooking utensil or food heating surface in size, said apparatus comprising i) 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, comprising a) water, lactic acid, potassium hydroxide 45% liquid, potassium carbonate 47% liquid, and potassium bicarbonate; and b) a foam formulation comprising at least one non-ionic surfactant and at least one amphoteric surfactant to enhance fire extinction and function as a wetting agent, wherein said liquid fire extinguishing composition comprises and has a viscosity determined principally by an at least 20% v/v concentration of one or more potassium or aluminum salts of an organic acid or a combination of potassium or aluminum and an organic acid, said 20% v/v concentration including said potassium hydroxide 45% liquid, potassium carbonate 47% liquid, and potassium bicarbonate, and wherein said liquid fire extinguishing composition is under pressure; and ii) a nozzle capable of spraying droplets of said liquid fire extinguishing composition on an area exceeding said area to which said fuel is confined when sprayed from a range of two to seven feet.