Importance

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Abstract

An improved tamper resistant bottle cap and neck for bottles which hold liquid. The bottle cap of the present invention includes a circular cover, a skirt depending from the periphery of the cover, and a tamper evidencing lower portion. A raised ring formed on the outer and upper surface of the bumper roll typically used in blow-molded containers protects the lower edge of the cap from tampering by making the lower edge of the ratchet ring in the case of a thread-on cap (or the lower edge of the removable portion of a skirt in the case of a push-on cap) less accessible to potential tamperers. Thread-on caps with helical threads and a ratchet ring, or push-on caps with skirts having removable lower portions, may each be equipped with an arched or curved pull tab. The pull tab in each instance is designed to accommodate a raised ring on the bumper roll of the neck of a blow-molded bottle. By designing the pull tab to accommodate the raised ring on the bumper roll the presence of the ring does not induce unwanted stresses and deformations into the pull tab or the skirt or ratchet ring to which the pull tab is connected.

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First Claim