Single-use heat transfer packaging for drinks, foodstuffs and medicaments

Claim 1

A single use heat transfer package for a food product comprising a closed receptacle having top, bottom and side walls, one of said receptacle walls being deformable upon the manual application of a force thereto from the exterior of said receptacle without the deformation of said receptacle wall opening said closed receptacle, a food product in said closed receptacle, a closed thermal capsule disposed within said receptacle and at least partially immersed in said food product, the interior of said closed capsule containing a separator that subdivides said interior into two chambers, said two chambers respectively containing different chemical reagents which, when combined, produce a chemical reaction within said capsule that changes the temperature of said thermal capsule and of the food product in which said capsule is immersed without opening said closed capsule, said thermal capsule having an exterior wall which is deformable upon the application of a force thereto without opening said capsule, said deformable wall of said thermal capsule being spaced from said deformable wall of said closed receptacle, means within said capsule for coupling said deformable wall of said receptacle to said deformable wall of said capsule whereby deformation of said deformable wall of said receptacle upon the manual application of an external force thereto causes deformation of said deformable wall of said thermal capsule, said separator within said capsule being coupled to said deformable wall of said capsule and being so constructed that deformation of said deformable wall of said capsule displaces said separator within said capsule to cause injection of one of said chemical reagents from one of said chambers past said separator into the other of said chambers and into contact with the other of said chemical reagents to initiate said chemical reaction.