Patent ID: 7350361
Filing Date: 2008-04-01
Classification: A47J,B65D

Abstract:
1. A self-heating or self-cooling container which uses an exothermic or endothermic chemical reaction to effect heating or cooling, the container comprising a body for holding a product, a reaction chamber for holding a primary fuel, a reservoir for holding a fluid constituent, an activation means for creating a fluid flow path from the reservoir into the reaction chamber, and a temperature control means which responds to the ambient temperature of the container to control the volume of the fluid constituent entering the reaction chamber wherein (i) the reservoir is adapted to accommodate a reduction in volume, the volume reduction pressurizing the fluid constituent and thereby creating the fluid flow path into the reaction chamber, and (ii) the temperature control means comprises a stop, whose position automatically adjusts in response to the ambient temperature of the container, the stop arranged to prevent further volume reduction of the reservoir and thereby to prevent further addition of the fluid constituent to the reaction chamber.