Flexible cryogenic conduit

Details Flexible cryogenic conduit Flexible cryogenic conduit

1983-09-12

1985-01-08

Shepperd, John W.

Refrigeration

Low pressure cold trap process and apparatus

174155, 138111, 138149, 138121, F16L 1111, F16L 1112

Patent

active

044920890

ABSTRACT:
The interior of a tube provided for low temperature operation is shielded from the exterior through a plurality of metal ribbons helically looping around the tube in an intertwined relationship and each carrying a welded on conduit for low temperature liquid whereby one of these conduits serves as a primary or outgoing conductor, and the two others serve as return paths; suitable spacers are provided to position the system in a concentric relation; inner and outermost tubes are preferably corrugated and the immediate interior of the outermost tube is filled with superinsulation.

REFERENCES:
patent: 3315703 (1967-04-01), Matthews et al.
patent: 3473575 (1969-10-01), Vogelsang et al.
patent: 3565118 (1971-02-01), Stearns
patent: 3835240 (1974-09-01), Matthaus
patent: 3947622 (1976-03-01), Graneau

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