Key coupled plastic conduits

Details Key coupled plastic conduits Key coupled plastic conduits

1979-07-27

1981-08-04

Callaghan, Thomas F.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

Pipe to nipple connection dependent on nipple to plate...

285305, 285403, 138117, F16L 3900

Patent

active

042818605

ABSTRACT:
A plastic conduit section of the bell and spigot variety for protecting electrical and communications cable, featuring paired, parallel, ridged spigots or channeled spigots, slotted bells, and resilient tie rods or keys to join adjacent conduit sections together. Interrupted peripheral keyways and resilient keys are used to join adjacent conduit sections together. These conduit sections may be internally divided into smaller subcompartments. A circumferential gasket seals the joint between the spigot and the bell ends. Flanged end surfaces limit axial movement and deflection. Lipped ends index and seat adjacent conduit sections for subsequent joining.

REFERENCES:
patent: 1881980 (1932-10-01), Thomas, Jr.
patent: 2013660 (1935-09-01), Lauer
patent: 2597482 (1952-05-01), Harrison et al.
patent: 2760518 (1956-08-01), Peet
patent: 3220754 (1965-11-01), Mori
patent: 3239244 (1966-03-01), Leinfelt
patent: 3600011 (1971-08-01), Alvis
patent: 3606402 (1971-09-01), Medney
patent: 3759553 (1973-09-01), Carter
patent: 3872894 (1975-03-01), Streit
patent: 3913954 (1975-10-01), Klimpl

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