Reinforced bitumen pipes and process for their manufacture

Details Reinforced bitumen pipes and process for their manufacture Reinforced bitumen pipes and process for their manufacture

1979-05-01

1981-09-15

Bryant, III, James E.

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138137, 138140, 138141, 138145, 138DIG2, 427240, F16L 914

Patent

active

042891728

ABSTRACT:
A reinforced bitumen pipe has an inner, strength-providing, reinforced thermosetting resin layer which is coated on its inner and outer sides with a bitumen layer. The bitumen layer on the inner side, and preferably also the bitumen layer on the outer side, is separated from the strength-providing reinforced thermosetting resin layer with the aid of an insulating glass fiber layer into which the thermosetting resin and the bitumen partially penetrate without finding their way up to each other.

REFERENCES:
patent: 2047778 (1936-07-01), Hayden
patent: 2545030 (1951-03-01), Isenberg et al.
patent: 2546533 (1951-03-01), Williamson
patent: 2653887 (1953-09-01), Slayter
patent: 2872947 (1959-02-01), Isenberg
patent: 2919721 (1960-01-01), Isenberg
patent: 3039495 (1962-06-01), Drukker
patent: 3288171 (1966-11-01), Hucks
patent: 4081302 (1978-03-01), Drostholm

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