Secondary confinement pipe having segments with interlocking rib

Details Secondary confinement pipe having segments with interlocking rib Secondary confinement pipe having segments with interlocking rib

1989-01-23

1990-11-06

Bryant, III, James E.

Pipes and tubular conduits

Longitudinally seamed

Sectional

138157, 138128, 138166, F16L 922

Patent

active

049678000

ABSTRACT:
A secondary confinement pipe is assembled from identical segments of extruded polyvinylchloride with tenon and groove formations along longitudinal edges enabling the segments to be interfitted. The joints are sealed by flexible synthetic resin coextruded with one of the formations at respective edges.

REFERENCES:
patent: 1197140 (1916-09-01), Mathews
patent: 1329522 (1920-02-01), Griffin
patent: 3682434 (1972-08-01), Boenig
patent: 4325414 (1982-04-01), Schaefer
patent: 4388488 (1983-06-01), Wlcek et al.
patent: 4576846 (1986-03-01), Noel
patent: 4667505 (1987-05-01), Sharp
Brochure issued by Failsafe Containment Systems Inc., describing and illustrating double walled pipeline.

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