Coupling and a method of using the same
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United States of America Patent
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Mar 19, 2019
Grant Date -
Apr 14, 2016
app pub date -
Sep 9, 2015
filing date -
Oct 9, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid transfer coupling includes a first and second shaft assembly. The first shaft assembly includes a shaft and annular fin attached to shaft, annular fin having one or more internal passages extending therethrough. The or each internal passage connects a center portion of shaft to a radially outwardly facing side of annular fin. The second shaft assembly includes a shaft and annular trough extending radially outwardly of shaft. The first shaft is concentrically accommodated within second shaft with annular fin being accommodated within annular trough. In use, first shaft assembly rotates at a first rotational speed and second shaft assembly rotates at a second rotational speed, with second rotational speed being greater than first rotational speed. The difference between second and first rotational speeds cause a fluid contained within annular trough to be driven radially inwardly through the or each internal passage to center portion of first shaft.
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