Patent ID: 7743952

Claim:
A closure device for a bottle or other similar container having a neck including an interior surface, comprising: a top surface; a hollow substantially cylindrical plug seal having an upper portion and a lower portion joined at a midpoint of the plug seal, the plug seal depending downwardly from the top surface and having an outer wall adapted to engage the interior surface of the neck of a bottle, the upper portion extending from an end proximal to the top surface to the midpoint and the lower portion extending from the midpoint to an end distal from the top surface; a substantially continuous upper annular bead formed integral to and extending circumferentially around the outer wall of the plug seal; a substantially continuous lower annular bead formed integral to and extending circumferentially around the outer wall of the plug seal, the lower bead being spaced apart and downward from the upper bead on the plug seal, the lower bead protruding outwardly from the outer wall farther than the upper bead to cause the lower bead to deflect more than the upper bead with respect to the neck when the plug seal is inserted into the neck, thereby creating an outward pressure that enhances the seal of the upper bead with the neck; and a skirt depending downwardly from the top surface and spaced radially outward from the plug seal, the skirt including an attachment means formed on an inside surface of the skirt and adapted to interconnect with a mating attachment means on an outer surface of the neck to retain the closure device on the container.