Methods and apparatus for liquid preservation
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United States of America Patent
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Dec 18, 2018
Grant Date -
Jul 27, 2017
app pub date -
Jan 27, 2017
filing date -
Jan 27, 2016
priority date (Note) -
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Abstract
Methods and apparatus for liquid preservation according to various aspects of the present invention may comprise a vessel and a displacer. The displacer may be disposed through an open top of the vessel into a cylindrical interior volume defined by an interior surface of the vessel. An outer rim of the displacer may form a movable seal with the interior surface of the vessel so that the displacer may move within the vessel parallel to the interior surface and below the open top. The displacer may include an aperture at an apex of the conical displacer, which allows air to escape from the interior volume as the displacer decreases the volume of the interior volume. An at least partially transparent displacement indicator may be positioned atop the aperture.
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