Pipe coupling

Details Pipe coupling Pipe coupling

1981-01-12

1983-11-22

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

Insulated

285 55, 285322, 285424, F16L 5916

Patent

active

044164742

ABSTRACT:
A section of corrugated pipe is provided having complementary bell and spigot end portions, the bell end portion being longitudinally segmented and having integrally formed flexible side wall strips connected to and projecting from a substantially cylindrical shroud. The spigot end portion of each section is receivable within the bell end portion, and an annular recess is formed in the exterior surface for receiving the side wall strips of another section when connected therewith. A plastic liner extends through each pipe section with sealing means provided to form a continuous, smooth inner conduit.

REFERENCES:
patent: 3492029 (1970-01-01), French et al.
patent: 3850453 (1974-11-01), Bentley
patent: 3903928 (1975-09-01), Fillans
patent: 4019761 (1977-04-01), Heidemann

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