Self-cooling beverage container with evacuated refrigerant receiving chamber
OwnerFrancisco J. Baroso-Lujan, Ernesto M. Galvan-Duqueinventors
Life of this patent
Estimating the term…
Abstract
A beverage can be cooled to a temperature lower than the ambient temperature by canning said beverage within a can which is internally provided with an integral cooling system comprising a compartment containing a liquid refrigerant fluid such as Freon 22 under a relatively elevated pressure, a compartment under reduced pressure connected with said high pressure refrigerant compartment by means of a partition, and a partition breaking device for perforating said partition to permit the expansion and flashing of the refrigerant fluid into said compartment under reduced pressure, in order to produce an absorption of heat from said beverage by the evaporation of said liquid refrigerant.
Claims17
A self-cooling beverage container comprising:
- a can having a cylindrical wall extending at least through a major portion of a height of the can, a top having means for opening the can and a bottom;
- a first compartment defined by the mall, the top and the bottom, containing a beverage;
- a second compartment containing a refrigerant fluid under relatively high pressure;
- a third compartment containing a gas under partial vacuum;
- a partition separating the third compartment from the second compartment;
- and
- a partition breaking means actuatable from outside of the container for perforating said partition to permit the refrigerant fluid to flash towards and expand into said third compartment for producing a decrease in the temperature of the beverage contained in said first compartment.
A self-cooling beverage container comprising:
- a can having a cylindrical wall extending at least through a major portion of a height of the can, a flat top having means for opening the can, and a bottom;
- a first compartment within said can defined by the cylindrical wall, the flat top and the bottom of the can, for containing a beverage within said first compartment;
- a second compartment within said can for containing a refrigerant fluid under relatively high pressure, said second compartment being arranged within said first compartment and having an upper end which is attached to the interior surface of the flat top of the can;
- a third compartment within said can for containing air under reduced pressure, which is an extension of said second compartment, said second and third compartments being formed by a cylindrical receptacle and separated by a circular partition hermetically attached to the interior surface of said cylindrical receptacle;
- a partition breaking device arranged through a wall of the second compartment for perforating said partition to permit the refrigerant fluid to pass towards and expand into said third compartment for producing a decrease in the temperature of the beverage contained in said first compartment;
- and
- a pusher member connected to said partition breaking device and actuatable from outside of the container by a tongue provided on the top of said can, said tongue also serving to open said can at the top thereof.
Dependencies are inferred from the claim text.