Tube impervious to liquids

Details Tube impervious to liquids Tube impervious to liquids

1997-06-16

1999-09-21

Hook, James F.

Pipes and tubular conduits

Flexible

Spirally wound material

138137, 138142, 138144, F16L 1104

Patent

active

059540966

ABSTRACT:
A liquid-impervious tube, includes at least one first band helically wound on itself, characterized in that this first band is porous and pervious to gaseous fluids and in that it includes a second thin band which is pervious to gaseous fluids and impervious to liquids, and which is also helically wound on itself, with partial overlapping of its turns, said turns being secured to one another in a impervious manner so that the second band defines a liquid-impervious continuous covering.

REFERENCES:
patent: 2669258 (1954-02-01), Spitz
patent: 2943644 (1960-07-01), Moseley
patent: 3205913 (1965-09-01), Ehlers
patent: 3255780 (1966-06-01), Squirrell
patent: 3706326 (1972-12-01), Bringolf
patent: 4153080 (1979-05-01), Murray, Jr. et al.
patent: 4402346 (1983-09-01), Cheetham et al.

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