Drainage pipe

Details Drainage pipe Drainage pipe

1997-02-05

1998-11-17

Graysay, Tamara L.

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

521695, E02B 1100

Patent

active

058367160

ABSTRACT:
A subsurface drainage pipe includes a tubular main pipe body having inner and outer surfaces and a longitudinal central axis. Walls defining a plurality of slot-shaped apertures through the inner and outer surfaces along the length of the main pipe body are provided. The slot shaped apertures are angled with respect to the central axis.

REFERENCES:
patent: 3422626 (1969-01-01), Hanrahan
patent: 3753352 (1973-08-01), McNally
patent: 4134268 (1979-01-01), Elmore
patent: 4538386 (1985-09-01), Dicello
patent: 4577997 (1986-03-01), Lehto et al
patent: 4679963 (1987-07-01), Heath
patent: 4812339 (1989-03-01), Shibata et al.

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