Bottles and jars – Nursing bottles and nipples – With vent or valve for air
Patent
1996-01-19
1998-07-14
Weaver, Sue A.
Bottles and jars
Nursing bottles and nipples
With vent or valve for air
215 111, 215902, 220DIG27, A61J 904
Patent
active
057790710
ABSTRACT:
A container having an open top and being adapted to be filled with liquid, wherein a vacuum is prevented from being formed within the container when inverted comprising a receptacle adapted to contain a quantity of liquid, a vent unit adapted to fit within the receptacle comprising a reservoir tube having an upper and lower portion, the reservoir tube having a proximal first end adjacent the top of the container and an open second end projecting sufficiently downwardly in the container, wherein the vent unit has an airway between the outside of the container and a point in the reservoir tube, a reservoir tube having a distal end having an opening, the vent tube projecting downwardly into the upper portion of the vent tube, and an airway extending from outside the container through the vent tube into the vent unit so that when the container is filled with liquid and inverted, the open end of the reservoir tube is above the liquid level in the container and the opening in the vent tube is above the liquid level in the upper portion of the vent unit forming a continuous air path from outside of the container through the extension and through the lower portion of the reservoir tube.
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patent: 2744696 (1956-05-01), Blackstone
patent: 3059797 (1962-10-01), Wilkinson et al.
patent: 5570796 (1996-11-01), Brown et al.
Brown Craig E.
Brown Robert J.
Hays David E.
Kemper Bernard J.
New Vent Designs, Inc.
Weaver Sue A.
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