Plastic pipe

Details Plastic pipe Plastic pipe

1990-02-13

1991-03-12

Bryant, III, James E.

Pipes and tubular conduits

Flexible

Corrugated

138129, 138154, F16L 1108

Patent

active

049985639

ABSTRACT:
A plastic pipe having spiral ridges on an outer surface and a continuous, cylindrical inner surface formed by a spiral wound plastic ribbon having at least one ridge-shaped hollow deformation extending longitudinally of the ribbon and spirally of the pipe. The outer radial surface of the hollow deformations are slit and sealed with a ribbon. Side portions extend from the opposite sides of the hollow deformations and are fused to each other to form the cylindrical inner surface.

REFERENCES:
patent: 4203476 (1980-05-01), Vitellaro
patent: 4303104 (1981-12-01), Hegler et al.
patent: 4354051 (1982-10-01), Kutnyak
patent: 4487232 (1984-12-01), Kanao
patent: 4759389 (1988-07-01), Suck

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