Bottles and jars – Nonrefillable – Guard or valve type
Patent
1984-10-29
1985-06-18
Norton, Donald F.
Bottles and jars
Nonrefillable
Guard or valve type
215 20, B65D 4906
Patent
active
045236879
ABSTRACT:
A non-refillable pour spout, for use in the neck of a bottle to prevent introduction of liquid into the bottle but permit liquid already within the bottle to be poured from the bottle in any direction, includes a pair of check valves in a liquid pouring duct and a third check valve in a separate air entry conduit which extends through the pour spout alongside the liquid pouring duct. The pour spout fits within the neck of a bottle, where it is retained sealingly by a plurality of flexible collars extending about the circumference of the pourer spout. A horizontal flange extends radially about the upper end of the liquid discharge tube, a small distance above the upper end of the air entry vent conduit, to protect the air entry vent conduit against introduction of liquid and to permit liquid to be poured in any direction without spilling into the open end of the air entry conduit. A valve closure body in one of the check valves in the liquid pouring duct is less dense than the liquid for which the valve is intended to be used.
REFERENCES:
patent: 2103065 (1937-12-01), Conkling
patent: 2335634 (1943-11-01), Benschoter
patent: 2954889 (1960-10-01), Kozlik
patent: 2991897 (1961-07-01), Burnett
patent: 3063589 (1962-11-01), Musel
patent: 3814273 (1974-06-01), Bereziat
patent: 4217988 (1980-08-01), Mills et al.
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