Patent ID: 8056744

Claim:
A molded closure and container combination comprising: a plastic container having a neck with a base portion and a flexible upper portion, the upper portion having a proximal segment sealing surface oriented at a first angle relative to the base portion and an adjacent distal segment oriented at a second angle relative to the base portion; a plastic closure having a generally planar top portion with an inner face, an outer peripheral edge and an annular skirt, the inner face having a rigid inner flange with an outer angled surface of about 60-85Â° from vertical and an outer flange in the cross-sectional shape of a right triangle with an outer surface substantially perpendicular to the planar top portion, and an angled inner surface that, at rest, has an angle similar to the first angle of the proximal segment sealing surface of the neck, the inner flange having a height larger than or equal to the angled outer surface; wherein the angled inner surface of the outer flange and the outer angled surface of the inner flange define a channel that can receive a part of the upper portion of the neck, wherein the inner flange is capable of biasing the part of the upper portion of the neck against the outer flange such that the inner surface of the outer flange forms a surface seal with the part of the upper portion of the neck.