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Leak resistant drinking cup

US-7575126-B2

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.

Patent figures（8）

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Source status & events

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