Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent
1983-07-07
1986-03-25
Taylor, Dennis L.
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
405 36, E02B 300
Patent
active
045779970
ABSTRACT:
An irrigation pipe, primarily for subterranean irrigation, said pipe having incisions in the longitudinal direction of the pipe, which incisions will open under the action of the pressure enabling the irrigation water to flow into the surrounding ground. It is characteristic of the pipe that a pipe made of two-layer material is used, the outer part of which is thinner than the inner part and the inner part has been cooled down during the manufacturing before the outer layer has been made, by which method the characteristic can be obtained that the incision opens more on the outside than on the inside thus preventing impurities of any kind from accumulating in the incision.
REFERENCES:
patent: 2763991 (1956-09-01), Kennon
patent: 3293861 (1966-12-01), Hinde
patent: 3422626 (1969-01-01), Hanrahan
patent: 3698193 (1972-10-01), Daymond
patent: 4095750 (1978-06-01), Gilead
patent: 4117685 (1978-10-01), Skaife
Lehto Eino
Moller Goran
Sjovall Lasse
Dubno Herbert
Ross Karl F.
Taylor Dennis L.
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