Reinforced underground pipe

Details Reinforced underground pipe Reinforced underground pipe

1985-01-31

1986-09-16

Marcus, Stephen

Pipes and tubular conduits

Distinct layers

Reinforced

138173, 174 68C, F16L 912

Patent

active

046116362

ABSTRACT:
A reinforced underground pipe made of a synthetic resin having an improved strength and reduced resin requirement. The reinforcement of the pipe is constituted by a helical rib formed on the outer surface of the main body of the pipe. At least side wall portions of the rib are corrugated. The rib may be U shaped or have a semicircular cross section. The corrugations may be rectangular, sinusoidal or triangular.

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patent: 4421437 (1983-12-01), Langer
patent: 4509447 (1985-04-01), Smith, Sr.

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