Sippy cup valve

Abstract

A spill-proof beverage dispenser comprising: (a) a container adapted to at least partially define an interior volume available for occupation by a liquid; (b) a lid adapted to be mounted to the container, the lid including a vent and a dispensing opening, and a liquid conduit having a passageway therethrough in fluid communication with the liquid within the container and selective fluid communication with the dispensing opening; and (c) a valve assembly mountable to the lid including a collapsible tower adapted to be received at least partially within the liquid conduit to selectively restrict liquid flow between the interior volume of the container and the dispensing opening, the collapsible tower being responsive to changes in pressure by collapsing at least one wall of the collapsible tower to selectively provide fluid communication between the passageway and the dispensing opening.

Description

BACKGROUND

[0001] 1. Field of the Invention

[0002] The present invention is directed to a valve, and more specifically to an automatic valve for a spill-proof type beverage dispenser.

[0003] 2. Background of the Invention

[0004] Spill-proof beverage dispensers are known in the art and are utilized most notably for the purpose of preventing inadvertent spillage of liquid from a beverage dispenser, such as a cup. For example, if a spill-proof cup is dropped or knocked over, it is intended that a majority of the liquid be retained therein. The retention of liquid therein lessens the waste associated with spilled beverages, reduces the work associated with beverage spill cleanup, and reduces potential economic consequences of destruction caused by any such spillage. More specific applications of spill-proof beverage dispensers may be directed to children's cups where one or more valves are incorporated or mounted therein, allowing the child to remove liquid from the cup when in the act ...

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