A volumetric displacement dispenser and method of using the dispenser is disclosed for dispensing liquid contents from an interior of a bottle with a bottle neck while preventing air from filling a void created within the interior of the bottle caused by the liquid contents being poured out of the bottle by gravity. The dispenser includes a stopper having first and second boreholes extending there through, the stopper being adapted to form an air-tight seal when it is seated into the bottle neck. An air pressure tube routed through the first of the boreholes has a first end open to atmospheric air and a second end open to the interior of the bottle. An expandable volumetric displacement balloon is attached to the second end of the air pressure tube and a one-way liquid valve is disposed in the outlet of the liquid flow channel in the stopper.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation in part of U.S. application Ser. No. 11/332,277 entitled VOLUMETRIC DISPLACEMENT DISPENSER, and filed on Jan. 13, 2006, now abandoned which in turn claims the benefit of U.S. Provisional Patent Application Ser. No. 60/647,610, filed on Jan. 27, 2005.
