Coated pipe having bending capability

Details Coated pipe having bending capability Coated pipe having bending capability

1985-02-04

1986-09-16

Marcus, Stephen

Pipes and tubular conduits

Distinct layers

Coated

138175, F16L 916

Patent

active

046116354

ABSTRACT:
In a concrete-wrapped pipe having an inner water-impermeable resinous coating, the concrete wrapping is formed with a continuous inner portion covering the resinous coating and a helically slotted outer portion forming a helical wrap, the helical slot extending at least to the depth of a mesh reinforcement embedded in the concrete. The concrete wrapping serves as a water-permeable impact resistant barrier while permitting limited bending of the pipe.

REFERENCES:
patent: 1961974 (1934-06-01), Kraner
patent: 3761557 (1973-09-01), Werner
patent: 3799208 (1974-03-01), Ells
patent: 3955600 (1976-05-01), Tamburello
patent: 4112565 (1978-09-01), Sailas
patent: 4134197 (1979-01-01), Nijs et al.
patent: 4437495 (1984-03-01), Zonsveld
Advances in Concrete Coating of Submarine Pipelines, E. G. Kiernan and F. E. Blake.

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