Bass Public Limited Company

William Dando

John G Lawrence

Stuart William Molzahn

John R Tippetts

Gregory Berman

Lisa Jane Paine

A beverage pack comprises a container (28), beverage (41) held in the container (28), and beverage cooling means (10) provided in, or in association with, the container (28) and comprising a phase-change medium (22) such as water adapted in use to change phase and thus extract heat from the beverage. Adsorption or absorption means (20) such as activated carbon, ammonium nitrate, and a polymer may be provided to adsorb or absorb the phase-change medium (22). The phase-change medium may be arranged to vaporize into a vaporization chamber (26) at sub-atmospheric pressure.

Relating to cooling containers of beverages

A self cooling beverage container or can. In one embodiment water (26) is maintained at low pressure such that the boiling point is reduced. The water (26) is caused to boil and the vapour to be absorbed by a desiccant. The boiling of the water (26) causes heat to be absorbed from the beverage. The desiccant may be carbon (28). The water (26) or carbon (28) (or other chemicals) in one embodiment are maintained within a blind bore (30) within the container. The water and carbon are separated by a burstable membrane (42).

Relating to containers

A self cooling beverage container or can. Different embodiments of a self cooling can are shown including the use of an endothermic reaction perhaps between ammonium nitrate and water. In another embodiment a volatile liquid is evaporated. In another embodiment water is maintained in a low pressure environment and allowed to boil. The vapour which is produced from the boiling water is absorbed by a desiccant maintaining the boiling process. The cooling process may be initiated by the pressure release of a carbonated beverage can during opening of the can.

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Derbyshire, United Kingdom

William Dando