Resealable closure for open end of beverage container

摘要

A resealable closure (10) for beverage containers uses initial physical interference to initiate a seal between a sealing flap (22) and a dispensing port (20) in a lid (18) of the resealable closure (10). In certain embodiments, once the initial seal is achieved, a pressure differential develops, resulting in additional force tending to bias the sealing flap (22) toward the dispensing port (20). The sealing flap (22) is actuated by an external drive means (24), that can also be a dust cover (26) to prevent debris from contaminating any surfaces that may come into contact with the contents of the beverage container. In many embodiments, there is a slack between initial movement of the external drive means and initial movement of the sealing flap (22), during which the pressure differential is preferably equalized through the unsealing of a vent hole (36) in the resealable closure (10).