Underdrainage pipe

Details Underdrainage pipe Underdrainage pipe

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

041825802

ABSTRACT:
An underdrainage pipe comprises a liquid-collecting pipe, protrusions on the liquid-collecting pipe, a filter layer around the liquid-collecting pipe and a liquid-conducting way, and the protrusions having at least one recess for each and the bottom portion of the recess not reaching the surface of the liquid-collecting pipe.

REFERENCES:
patent: 3747352 (1973-07-01), Maroschak
patent: 3861152 (1975-01-01), Maroschak
patent: 3976578 (1976-08-01), Beane
patent: 4061368 (1977-12-01), Auriemma

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