Cryogenic fluid transfer tube
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Jun 12, 2003
app pub date -
Oct 28, 2002
filing date -
Feb 22, 2000
priority date (Note) -
Abandoned
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Abstract
The present invention is an improved tube for the effective transfer of cryogenic fluids and the like. The transfer tube (22) comprises at least two tubes, an inner tube (30) coaxially housed within an outer tube (44) with a defined gap therebetween. The inner tube is sufficiently permeable to gaseous cryogenic fluid that it allows release of limited amounts of gaseous fluid into the defined gap. The outer tube is essentially impermeable so as to contain the gaseous fluid within the gap. Preferably both tubes are constructed from flexible and cold temperature resistant polymer materials, such as fluoropolymer materials and especially expanded polytetrafluoroethylene (PTFE) and/or fluorinated ethylene propylene (FEP). The transfer tube of the present invention is highly effective at cryogenic fluid transfer while being lighter, more flexible, and more efficient than currently available transfer tubes.
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