Rotary pipe joint
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United States of America Patent
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-
Apr 6, 1982
Issued Date -
N/A
app pub date -
Apr 7, 1980
filing date -
Jun 5, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure-tight, rotary pipe coupling joins rotating, high temperature fluid transmission lines. Pressure seals of the coupling are maintained at a temperature lower than that of the high temperature or primary transmitted fluid by thermally insulating the seals from the high temperature fluid and by pumping a fluid coolant through annular cavities located adjacent the seals. A balanced pressure structure substantially eliminates thrust forces between the coupling members and reduces rotating friction.
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