Abstract: An apparatus for preserving carbonated beverages or other liquids features a container, and an impermeable piston that divides the container interior into a lower chamber beneath the piston for storage of a liquid, and an upper chamber above the piston. An axially extendable and collapsible conduit has a lower end sealed to the piston around a flow opening that passes axially therethrough, and an upper end connected and sealed to an upper portion of the container around a mouth opening therein. A valve mechanism features a closure member movable between open and closed positions that respectively open and close the flow opening in the piston. Opening of the closure member allows pouring of the liquid out of the container via the flow opening, the conduit and the mouth, and closing of the closure member seals the lower chamber closed in order to preserve the liquid.

Abstract: An apparatus for preserving carbonated beverages or other liquids features a container, and an impermeable piston that divides the container interior into a lower chamber beneath the piston for storage of a liquid, and an upper chamber above the piston. An axially extendable and collapsible conduit has a lower end sealed to the piston around a flow opening that passes axially therethrough, and an upper end connected and sealed to an upper portion of the container around a mouth opening therein. A valve mechanism features a closure member movable between open and closed positions that respectively open and close the flow opening in the piston. Opening of the closure member allows pouring of the liquid out of the container via the flow opening, the conduit and the mouth, and closing of the closure member seals the lower chamber closed in order to preserve the liquid.