Patent ID: 6116231
Filing Date: 2000-09-12
Classification: A61F,F24V

Abstract:
A disposable heating device comprising:a disposable container having at least one liquid impermeable first zone and at least one liquid impermeable second zone;a first liquid comprising an oxidizing agent in the at least one first zone;a second liquid comprising a fuel in the at least one second zone;a non-fuel gelling agent solution in at least one of the zones;a separator disposed between the at least one first zone and the at least one second zone, the separator being operable to provide communication between the zones,wherein communication between the zones causes mixing of the liquids therein and initiates an exothermic reduction-oxidation reaction to produce heat in said container,wherein communication between the zones initiates gelation of said gelling agent within said container to produce in said container a non-fuel gel that moderates the rate of said reaction independently of dissolution of said gelling agent,and wherein the amount of said gelling agent is sufficient to produce said gel sufficiently rapidly to prevent said exothermic reaction from causing the temperature of the container to overshoot a predetermined maximum temperature.