Patent ID: 6832706
Filing Date: 2004-12-21
Classification: B65D

Abstract:
A dispensing closure assembly for a container, comprising:an outer closure body including an upper tubular portion, and a lower skirt portion configured for attachment to an associated container; a valve retainer comprising a central support stem positioned within said tubular portion; a flexible valve member positioned on said support stem and extending from said support stem outwardly to a peripheral valve seat within said tubular portion spaced from said support stem, said valve member being movable from a first closed position in which said valve member bears against said valve seat, to a second position wherein at least a portion of the periphery of said valve member is spaced from said valve seat to permit flow through said tubular portion; and a liquid seal lip extending inwardly of said valve seat for engagement with said flexible valve member intermediate said support stem and said valve seat, in spaced relationship to said valve seat, to define an inner surface of said valve member isolated from an interior of said container when said valve member is in said closed position, to limit the surface area of said valve member against which liquid pressure within said container acts.