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US 2007/0185555 A1Published application
Manually activatable chemical cold pack
OwnerMyrna Partrich, Rose Handleman +1inventors
InventorsMyrna Partrich, Rose Handleman, Shelley Tauber
Life of this patent
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Abstract
A cold pack comprising a handheld flexible plastic bladder filled with a smaller container of a first reactant, with a volume between the container and the bladder filled with a second reactant. The cold pack may be hand crushed to break the thin walled inner container, allowing the reactants to mix and generate an endothermic reaction cooling the outer walls of the bladder.
Claims3
A cold pack comprising:
- two circular sheets of fluid impervious plastic film sealed at their edges to form a disc-shaped bladder enclosing a first volume;
- a thin plastic sheet container filled with a first fluid reactant, having a second, smaller volume than the first volume;
- and
- a second fluid reactant, which produces an endothermic reaction when mixed with the first reactant disposed in the bladder on the exterior of the sheet container;
- whereby, the bladder may be compressed to rupture the thin plastic sheet container to allow the first and second reactants to intermix generating an endothermic reaction cooling the surface of the bladder.
2 more elements
Dependencies are inferred from the claim text.