Patent ID: 6257432
Filing Date: 2001-07-10
Classification: B65D

Abstract:
A cap and container assembly comprising:a container and a cap;the container including a base, and a neck for engagement with the cap, an end of the neck defining a container mouth;the neck being substantially symmetrical about a central vertical axis, the neck forming a flexible lip, proximate the mouth, with an upper, generally frusto-conical, exterior sealing surface, the neck further forming a lower, generally frusto-conical, interior sealing surface, the neck further forming an exterior circumferential shoulder of greater diameter than a diameter of the lip;the cap including a top, a skirt depending peripherally from the top, first and second annular sealing protrusions depending from an interior surface of the top, and at least one stopping projection on an interior surface of the skirt;the top being generally convex as viewed from inside the cap;wherein, upon securing engagement of the skirt with a bottom section of the neck, the first sealing protrusion sealingly engages the lower interior sealing surface, and the second sealing protrusion sealingly engages the upper exterior sealing surface; andwherein the shoulder and the at least one stopping projection engage to form a positive stop to lower engagement of the cap with respect to the container, ensuring sealing contact between the first sealing protrusion and the lower interior sealing surface and between the second sealing protrusion and the upper exterior sealing surface, and forming a gap between a bottom edge of the cap and an upper part of the base.