Patent ID: 6206251
Filing Date: 2001-03-27
Classification: B65D

Abstract:
A valve apparatus sized to fit in the lip region of a neck of a container to provide flow control for a fluid exiting from said container, comprising:an attachment portion dimensioned to be coupled to the lip region of said container;a flap portion coupled to said attachment portion, said flap portion sized and positioned to substantially obstruct the flow of fluid through the lip region of the container when said flap portion is in a closed position;wherein said flap portion is resiliently biased with a bias selected so that said flap portion is in said closed position in the absence of fluid pressure acting on said flap portion and wherein said bias acts so that said flap portion opens a progressively greater amount in response to increasing fluid pressure against said flap portion, thereby decreasing the obstruction of said flap portion to the discharge of the fluid through said lip region as the fluid pressure against said flap portion increases;whereby said valve apparatus moderates pressure surges of the discharged fluid.