Filling valve for use in filling balloons

Claim 1

In combination, a balloon having a neck with an opening and a valve assembly for filling the balloon positioned in said neck, said valve comprising an elongated generally tubular body member having an upper section and a lower section divided by a transverse interior wall, a radially outwardly directed frusto-conical flange diverging downward toward the lower edge of the lower section forming a seal with the bead at the mouth of the balloon, means defining at least one port communication with the lower section and located above said flange and at least one opening in the side wall of the upper section spaced downwardly from the upper terminal edge thereof a predetermined distance, the ratio of the area of the upper opening to the lower port being about 5:1, said balloon neck snugly embracing the exterior of said valve and normally preventing flow between said lower port and upper opening and during filling defining an air chamber between said balloon neck and valve having two axially spaced annular seals between the balloon neck and said flange and upper terminal edge.