Hydraulic and earth engineering – Drainage or irrigation
Patent
1979-07-16
1981-04-07
Corbin, David H.
Hydraulic and earth engineering
Drainage or irrigation
E02B 1100, E03B 318
Patent
active
042602831
ABSTRACT:
A de-watering system of the type used to lower the water table by extracting water from below ground through the use of an elongated header conduit having a negative pressure placed thereon wherein a plurality of swing joints and well point assemblies are interconnected to the header conduit and jetted into the ground utilizing a forced stream of water to a predetermined depth. The well point assembly includes an outer strainer pipe disposed in surrounded, concentric relation to an inner down pipe wherein a plurality of slots are formed in the strainer pipe through which water passes into access with the distal open end of the down pipe. Water is drawn from the interior of the down pipe into the elongated header circuit to the point of ultimate disposition of the collected water.
REFERENCES:
patent: 1915136 (1933-06-01), Share
patent: 3540223 (1970-11-01), Ebbe
patent: 3566982 (1971-03-01), Share et al.
patent: 3930538 (1976-01-01), Brennan et al.
patent: 4099749 (1978-07-01), Van Vliet
Corbin David H.
Fisher, III Arthur W.
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