Vacuum adapter for maintaining fluid in a vessel
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United States of America Patent
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-
May 22, 2001
Grant Date -
N/A
app pub date -
May 18, 1999
filing date -
May 18, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An adapter for connection to an opening in a fluid containing vessel for applying a vacuum to the interior of the vessel is provided. The adapter includes at least partially concentrically disposed outer and inner sleeves, each having a generally conical shape and a generally radially extending opening in a side wall thereof. The inner and outer sleeves are rotatable relative to each other such that the extent to which the openings in the side walls of the inner sleeve and outer sleeve are aligned can be selectively adjusted. The inner and outer sleeves define a passage through the adapter extending from a proximal opening at a proximal end to a distal opening at a distal end of the adapter. The proximal end of the adapter is configured for connection to a vacuum source and the distal end is configured for insertion in and to sealingly engage the edge of the opening in the vessel.
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