Title:
【発明の名称】極低温流体輸送管
Document Type and Number:
Japanese Patent JP2003524135
Kind Code:
A
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.
Inventors:
Lobby, mark john
Application Number:
JP2001562100A
Publication Date:
August 12, 2003
Filing Date:
February 20, 2001
Export Citation:
Assignee:
W. L. Gore and Associates (UK) Limited
International Classes:
F16L9/18; F16L11/12; F16L59/14; F17D1/04; (IPC1-7): F16L9/18; F16L11/12; F17D1/04
Attorney, Agent or Firm:
Takashi Ishida (3 others)