High strength multiple passageway plastic conduit

Details High strength multiple passageway plastic conduit High strength multiple passageway plastic conduit

1974-07-24

1976-03-02

Bell, Jr., Houston S.

Pipes and tubular conduits

Plural duct

Longitudinally extending common wall

138177, F16L 918

Patent

active

039411575

ABSTRACT:
Conduit means characterized by having a plurality of parallel adjacent, longitudinally extending passageways within an exterior wall and having longitudinally extending ribs extending longitudinally of and exterior to the exterior wall for high flexural strength and high strength enabling bearing high external loads. The passageways have at least a portion of their interior walls in common with adjacent passageways. Preferably, the conduit, including the ribs, are formed of a lightweight, extrudable plastic. Also disclosed are structural details, apparatus, and methods, including one for making any number of passageways in the conduit.

REFERENCES:
patent: 3110754 (1963-11-01), Witort et al.

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