Spill-proof closure

Details Spill-proof closure Spill-proof closure

1991-10-15

1993-02-16

Marcus, Stephen

Receptacles

Closures

Secondary closure within parameter of primary closure

220714, 222189, B65D 5118

Patent

active

051863472

ABSTRACT:
A spill-proof closure for containers used in dispensing liquid beverages. The closure has a spout containing a thin membrane at or near the upper end. The thin membrane includes a through slit which remains closed except when external suction is applied during normal drinking.

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