Pipe for underdraining

Details Pipe for underdraining Pipe for underdraining

1978-03-17

1980-01-08

Stein, Mervin

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

405 49, 138173, E02B 1300, F16L 1111

Patent

active

041825810

ABSTRACT:
A pipe for underdrainage comprises (1) a liquid-collecting pipe; (2) a plurality of discontinuous protrusions on the outer surface of the liquid-collecting pipe; (3) a filter layer capable of passing liquid while substantially excluding solids, the filter layer being disposed around the liquid-collecting pipe and contacting the top portions of the protrusions; and (4) a liquid-conducting way composed of a space communicating both in the longitudinal direction and in the peripheral direction of the liquid collecting pipe and defined by the protrusions, the outer surface of the liquid-collecting pipe and the inner surface of the filter layer.

REFERENCES:
patent: 2433300 (1947-12-01), Shafer
patent: 3566607 (1971-03-01), Sixt
patent: 3753352 (1973-08-01), McNally
patent: 3830373 (1974-08-01), Sixt

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