Importance

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Abstract

A syphon seltzer package (10) consists of a polyethylene terephthalate (PET) plastic bottle (12) with a neck (16) having an opening (18), into which a valve insert (20) is mounted. The insert (20) is held in place by mechanical attachment. The insert (20) fits into a sleeve (50) in an interference fit. Projections (52) on the outside of wall (32) insure a positive seal between the insert (20) and the sleeve (50). Similar projections (54) on the outside surface (56) of the sleeve (50) provide a positive seal between the sleeve (50) and the neck (16) of the bottle (12). At the bottom of the sleeve (50), there are four projections (58) spaced at 90 degree intervals around the sleeve (50). Castellations (60) are provided around the sleeve (50) between the projections (58). To assemble the package (20), the sleeve is inserted in the neck (16). The insert (20) is then driven into the sleeve (50). An interference fit between the insert (20) and the sleeve (50) causes the projections (58) and the castellations (60) to splay outward when the insert (20) is fully driven into the sleeve (50). The outward splaying of the projections (58) and castellations (60) locks the sleeve (50) and insert (20) in place in the neck (16) of the bottle (12).

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First Claim