High pressure fluid swivel
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United States of America Patent
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Mar 28, 2017
Issued Date -
N/A
app pub date -
Feb 11, 2014
filing date -
Feb 11, 2014
priority date (Note) -
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Abstract
A fluid swivel that includes a stationary annular structure defining upper and lower annular seal recesses, and a rotatable outer housing operatively connected to the stationary annular structure, the outer housing defining an annular passage that has upper and lower surfaces. Upper and lower seals are positioned between the stationary annular structure and the rotatable outer housing and disposed in the upper and lower seal recesses. An inner housing bore is disposed in the stationary annular structure and arranged to provide fluid of pressure P to the annular passage, the fluid exerting a first force (Fv1) longitudinally inwardly on the outer surface of the outer housing, and a second force (Fv2) longitudinally outwardly on the upper and lower surfaces of the annular passage, the second force (Fv2) having a greater magnitude than the first force (Fv1) so the outer housing deflects outwardly, pushing the upper and lower seals into the upper and lower seal recesses.
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