Patent ID: 7637401
Filing Date: 2009-12-29
Classification: A45D,B65D

Abstract:
1. A valve assembly that is connectable to a tube for dispensing a substance therefrom, the tube including a squeezable tubular body defining therein a chamber for receiving and delivering therethrough the substance, wherein the tube defines a first axially extending passageway forming an unobstructed axially extending flow path, the valve assembly comprising: (a) a valve body including: (b) a valve cover formed of an elastic material defining a predetermined modulus of elasticity, and including: wherein at least one of the valve seat diameter, a degree of interference between the valve cover and valve seat, the predetermined radial thickness of the valve portion, and a predetermined modulus of elasticity of the valve cover material, is selected to (1) define a predetermined valve opening pressure generated upon squeezing the tube that allows passage of the substance from the tube through the valve opening, and (2) hermetically seal the valve and prevent the ingress of bacteria through the valve assembly and into the tube in the normally closed position.