Pressure equalization apparatus for a bottle and methods associated therewith

摘要

A device that assists with equalizing air pressure within a bottle with the atmospheric air pressure as liquid is being poured from the bottle and includes one or more relatively short air tubes. The air tubes are situated with an upper inlet rim of the air tubes located flush with or relatively near the bottle rim. Whether an insert or integrated into the manufacture of a container, the one or more air tubes that extend partially into the container allow air to pass into the container as the liquid exits the container. The pressure equalizer not only minimizes or prevents the common glugging effect, but it allows liquid from a bottle to be poured smoothly at any angle and orientation. A cap incorporating a detachable pressure equalizer is also described.

主权项

1. A container, comprising:
a main body portion configured to contain a liquid; a container opening which provides a point of exit for liquid contained in the main body portion; a bottleneck between the container opening and the main body portion, the bottleneck comprising a cross-sectional area that is smaller than a cross-sectional area of the main body portion; and a pressure equalizer having at least one air inlet and being positioned in the bottleneck, the pressure equalizer enabling the liquid to exit the container opening and simultaneously enabling air to enter the main body portion through the at least one air inlet such that the flow of the liquid from the main body portion is substantially continuous such that the liquid, when poured at any container angle, exits the container opening smoothly and without glugging, wherein the container opening comprises a diameter of less than about 15 mm.