Pipes and tubular conduits – Flexible – Braided – interlaced – knitted or woven
Patent
1975-12-08
1978-03-28
Powell, William A.
Pipes and tubular conduits
Flexible
Braided, interlaced, knitted or woven
138126, 138137, 138175, 138177, 138176, 138145, 156 622, 156172, 156173, 156187, 156276, F16L 1100, B65H 8100
Patent
active
040809994
ABSTRACT:
The invention relates to a sandwich tube comprising an inner and an outer fiber reinforced layer of thermosetting resin and an intermediate layer therebetween consisting of inorganic filler material coated with thermosetting resin and obtained by spraying a finely divided resin into a case of loosely laid inorganic filler material. A non woven is present between the intermediate layer and the outer fiber reinforced layer.
REFERENCES:
patent: 3470917 (1969-10-01), Grosh
patent: 3526525 (1970-09-01), Versoy et al.
patent: 3655468 (1972-04-01), Bastone et al.
patent: 3706615 (1972-12-01), Nishiyama et al.
Bulters Hein
de Putter Warner Jan
Heidemann Gerrit
Ball Michael W.
Industriele Onderneming Wavin N.V.
Levine Alan H.
Powell William A.
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