Leak resistant drinking cup

Details Leak resistant drinking cup Leak resistant drinking cup

2005-01-28

2009-08-18

Stashick, Anthony D (Department: 3781)

Receptacles

Container attachment or adjunct

Drinking device

C220S717000, C220S203110, C220S303000

Reexamination Certificate

active

07575126

ABSTRACT:
A leak resistant drinking cup has a diaphragm seal for normally closing an open top of a liquid container of the cup. The seal can be opened to permit liquid to flow past it and out of the cup upon application of a vacuum pressure by the person, typically a small child, drinking from the cup. The diaphragm seal has a peripheral edge margin that can be deflected upward by the vacuum pressure to open a path out of the drinking cup. A hold down rib may be employed to control the locations where the peripheral edge margin is permitted to deflect.

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