Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent
1989-08-16
1991-01-08
Scherbel, David A.
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
405 36, 521695, B01D 2110
Patent
active
049830694
ABSTRACT:
An improved drywell, drywell system and method of controlling the flow and distribution of surface water employing a drywell, the drywell comprising a plastic, cylindrical drywell adapted to be positioned beneath the ground, which drywell has at least one large diameter port in the cylindrical wall of the drywell to receive or discharge surface water and a plurality of smaller diameter drain ports, generally uniformly distributed about the cylindrical wall surface of the drywell and a removable bottom cover and a removable top cover, the large and the small diameter ports having a mechanically weakened inner peripheral section, the inner section adapted to be easily removed (knocked out) prior to use. By selection of the ports to be removed the direction and distribution of the flow of surface water beneath the surface may be controlled.
REFERENCES:
patent: 3221881 (1965-12-01), Weiler et al.
patent: 3428077 (1969-02-01), Scarfe
patent: 4031009 (1977-06-01), Hicks
patent: 4298294 (1981-11-01), Zimmerman
patent: 4789487 (1988-12-01), Wallace
patent: 4805920 (1989-02-01), Gavin
Crowley Richard P.
Johnson Jerrold D.
Scherbel David A.
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