Patent ID: 6062435
Filing Date: 2000-05-16
Classification: B65D

Abstract:
A dispensing system for dispensing liquid from a container, said system comprising:a discharge conduit defining a flow passage for establishing fluid communication with said liquid from said container;a resilient valve that (1) extends across said discharge conduit flow passage in an initial, substantially non-deformed, closed configuration, (2) has an interior side for being contacted by said liquid and an exterior side exposed to the ambient external atmosphere, and (3) defines a closed dispensing orifice that is displaceable outwardly to an open configuration when the pressure on said valve interior side exceeds the pressure on said valve exterior side by a predetermined amount, and is displaceable inwardly to an open configuration when the pressure on said valve exterior side exceeds the pressure on said valve interior side by a predetermined amount; anda restraint structure disposed in said discharge conduit in contact with said valve interior side when said valve is in said initial, substantially non-deformed, closed configuration, said restraint structure and discharge conduit together defining at least one flow path accommodating flow of said liquid from said container against at least a portion of said valve interior side, said restraint structure preventing said closed dispensing orifice from opening inwardly when the ambient external pressure on the valve exterior side exceeds the pressure on the valve interior side.