Slotted concrete pipe

Pipes and tubular conduits – Reinforced – With embedded element

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Details

138 92, 138103, 138176, 405 43, F16L 908

Patent

active

043780326

ABSTRACT:
Concrete pipe including a hollow tube of concrete with a grid of reinforcing bars embedded therein. A plurality of inserts are embedded in the concrete pipe in between the bars of the grid and have passageways therethrough to form slots between the interior of the concrete pipe and the exterior thereof at predetermined locations to form slotted concrete pipe.

REFERENCES:
patent: 2009163 (1935-07-01), Chesley
patent: 2602469 (1952-07-01), Whiting
patent: 2660199 (1953-11-01), Montgomery
patent: 3166631 (1965-01-01), Reiland
patent: 3275040 (1966-09-01), Hausmann et al.
patent: 3348433 (1967-10-01), Mayes

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