Variable volume beverage container
First Claim
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1. A variable volume beverage container comprising:
- a vertically elongated upwardly open base having a cylindrical wall formed at least along an inner surface with formations distributed over at least a major part of a height of the wall;
a downwardly open upper part having a wall formed at least externally with formations mating with the formations of said base and enabling variable height insertion of said upper part in said base for varying an internal volume of said container as defined by said base and said upper part, said upper part forming a seal with said base preventing escape of gas from said container;
a mouth on said upper part affording access to an interior of said container; and
a removable cap on said mouth.
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Abstract
A variable volume container for beverages charged with gas in which a concave cylindrical upper part is screwed into a convex cylindrical base and leaves a very small gas volume above the beverage to thereby prevent loss of gas from the beverage and loss of quality.
26 Citations
18 Claims
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1. A variable volume beverage container comprising:
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a vertically elongated upwardly open base having a cylindrical wall formed at least along an inner surface with formations distributed over at least a major part of a height of the wall;
a downwardly open upper part having a wall formed at least externally with formations mating with the formations of said base and enabling variable height insertion of said upper part in said base for varying an internal volume of said container as defined by said base and said upper part, said upper part forming a seal with said base preventing escape of gas from said container;
a mouth on said upper part affording access to an interior of said container; and
a removable cap on said mouth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification