Importance

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Abstract

This application describes articulating closures for flexible containers, such as fluid bladders, that have an open end between two flexible walls. Disclosed closures can comprise articulating opposing arms that lock together in a flattened configuration to seal an end opening of a flexible container. The disclosed closures can include four or more rigid arms that are linked together at their ends via pivoting joints to form an articulable loop so that the closure can collapse to a flattened or closed configuration to seal a container and can open to a polygonal configuration. In the closed configuration, the closures can be locked to keep the opening sealed until a user intentionally unlocks the closure.

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First Claim