Well point

Details Well point Well point

1991-01-23

1992-09-08

Neuder, William P.

Boring or penetrating the earth

Boring without earth removal

Fluid passage to exterior of drive point

166228, E21B 726

Patent

active

051450151

ABSTRACT:
A well point assembly is provided with a central, hollow, rectangular tube having a plurality of elongated slots extending axially from end thereof. Opposite ends of the tube are fitted in end members having complementary recesses with the slots being substantially longer than the recess in one of the end fittings to provide for the direct passage of water into and out of the tube. The hollow plastic tube has a plurality of slits therein surrounds the central tube and is secured to the opposite end fittings. The one way valve assembly is provided in the lower end fitting so that upon the passage of pressurized water through the central tube, the valve will be open to provide a water jet outwardly of the lower end and upon the application of a suction to the central tube, the valve will be closed and water will be drawn through the screen and the slots in the central tube to be pumped to the surface.

REFERENCES:
patent: 2835328 (1958-05-01), Thompson
patent: 2838120 (1958-06-01), Allmendinger et al.
patent: 4649996 (1987-03-01), Kojicic et al.
patent: 4700776 (1987-10-01), Petrovic

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