Ground dewatering system

Details Ground dewatering system Ground dewatering system

1976-02-11

1981-04-07

Croyle, Carlton R.

Pumps

Expansion and contraction of pump fluid

417410, F04B 1700

Patent

active

042603340

ABSTRACT:
This is concerned with a submersible pump deep well system for dewatering construction excavations in which a solid, airtight casing and attached well screen are disposed in a generally upright position in a hole in the ground adjacent an excavation or the like with a pump disposed down in the airtight casing and a water discharge line extending upwardly therefrom with the casing being sealed so that it is airtight with a vacuum created therein with the arrangement being such that the pump is at a level above the well screen so that water in the surrounding ground formation will fill in the bottom of the hole through the well screen openings and rise to a level above the bottom of the casing, thereby sealing the lower end thereof to prevent air from flowing through the surrounding formation into the casing to break the vacuum therein.

REFERENCES:
patent: 536858 (1895-04-01), Donato
patent: 1599744 (1926-09-01), Chapmon
patent: 2210977 (1940-08-01), Hollander
patent: 2270666 (1942-01-01), Arutunoff
patent: 2622683 (1952-12-01), Silitch et al.
patent: 2654434 (1953-10-01), Culleton
patent: 3033125 (1962-05-01), Pleuger
patent: 3342135 (1967-09-01), Schnabel
patent: 3635591 (1972-01-01), Wilkinson
patent: 3671152 (1972-06-01), Guinard
patent: 3746473 (1973-07-01), DeLancey et al.
patent: 3957402 (1976-05-01), Sloan

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