Importance

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Abstract

A beverage container comprises a bottle (2) which has a central axis and is sealed by a lid (6) of resilient material. The bottle has a neck (8) defining an opening and the lid (6) includes a closure plate (30, 32), integral with which is a depending skirt (18) extending around the outer surface of the neck. The skirt (18) carries an annular flange (20) which is in sealing engagement with the underside of a downwardly directed shoulder (14) on the outer surface of the neck. The annular flange (20) is connected to the skirt (18) by a resilient hinge connection (22). The annular flange (20) is elongate in axial sectional view, the end surface of the free end of the flange (20) is in sealing engagement with the underside of the shoulder (14). The internal surface of the skirt (18) carries an annular protuberance (52) which is in sealing engagement with one side surface of the flange (20). The other side surface of the flange is in sealing engagement with the outer surface of the neck (8), whereby an annular chamber (54) is defined by the inner surface of the skirt, the said one side surface of the annular flange, the protuberance and the hinge. A gas passage (50) is provided which extends between the annular chamber (54) and atmosphere.

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First Claim