Spill-proof drink container assembly

Details Spill-proof drink container assembly Spill-proof drink container assembly

1995-12-26

1996-10-01

Castellano, Stephen J.

Receptacles

Container attachment or adjunct

Drinking device

220709, 220719, 220721, 220410, B65D 4714

Patent

active

055605133

ABSTRACT:
A spill-proof drink container is provided with an interior fluid tank having a resilient, diaphragm-like bottom closure and an interior recovery tube co-operating with the bottom closure in sealing relation, with an outer container housing the interior fluid tank and providing a completely surrounding negative pressure passageway, and with a dual-passageway withdrawal tube that cooperates with the negative pressure passageway and with the recovery tube. Negative pressures introduced into the withdrawal tube by the container user cause the diaphragm bottom closure to move downward whereby hydrostatic forces in the contained liquid flow the contained liquid into and through the recovery tube and through the dual-passageway withdrawal tube to the container user creating the negative pressures.

REFERENCES:
patent: 3360159 (1967-12-01), Anderson
patent: 4196721 (1980-04-01), Posnansky
patent: 4280533 (1981-07-01), Jacobellis
patent: 4928876 (1990-05-01), Marshall
patent: 5123571 (1992-06-01), Rebeyrolle et al.
patent: 5279238 (1994-01-01), Ross, Jr.
patent: 5282541 (1994-02-01), Chen
patent: 5484080 (1996-01-01), Blasnik et al.
patent: 5513762 (1996-05-01), Jamami

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