High strength composite pipe structure having leakproof joints

Details High strength composite pipe structure having leakproof joints High strength composite pipe structure having leakproof joints

1975-09-15

1977-07-26

Aegerter, Richard E.

Pipes and tubular conduits

Combined

With end structure

138121, 138155, 285138, 285DIG4, F16L 906, F16L 2100

Patent

active

040376265

ABSTRACT:
An improved plastic composite pipe structure includes an outer corrugated pipe, an inner smooth-walled liner, and joining means including a bell fitting at one end of the liner extending beyond the outer corrugated pipe and a spigot fitting at the other end. The corrugations of the outer pipe at the spigot end are undercut so as to slide over and provide crush resistance to the joint that is formed when the spigot of one composite pipe section is inserted into and engaged with the bell of an adjacent composite pipe section. A seal, for example, an elastomeric gasket, solvent weld, or elastomer-based adhesive is used to provide a leakproof joint. Optionally, an outer pipe cover can be utilized as a component of the composite pipe.

REFERENCES:
patent: 3257719 (1966-06-01), Larkfeldt
patent: 3330303 (1967-07-01), Fochler
patent: 3332446 (1967-07-01), Mann
patent: 3767211 (1973-10-01), Amphlett
patent: 3920268 (1975-11-01), Stewing
patent: 3926222 (1975-12-01), Shroy et al.
patent: 3929359 (1975-12-01), Schmunk et al.
patent: 3958425 (1976-05-01), Maroschak

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