Positive pressure closure lid for beverage can

Details Positive pressure closure lid for beverage can Positive pressure closure lid for beverage can

1990-07-31

1991-01-01

Marcus, Stephen

Receptacles

Closures

Combined or convertible

220306, 215228, B65D 5124

Patent

active

049812335

ABSTRACT:
A positive pressure closure lid has a single stroke bellows pump for pressurizing the internal open space of an aluminum beverage can. The pressure cap has a bifurcated seal which curls around and tightly engages opposite sides of the rolled top rim of the beverage can. As the bellows pump is pressed downwardly, a bellows cap is held in the collapsed position by a pair of resilient snap retainers. The slight pressurization provided by the single stroke bellows pump retards the release of carbonated gases from the beverage, thus preserving the flavor of the beverage after the pressurized can has been opened. Increased internal pressure provided by the bellows pump reinforces the sealing engagement of an internal annular flange portion of the bifurcated seal.

REFERENCES:
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