De-watering pump

Details De-watering pump De-watering pump

1982-06-14

1986-08-26

Cline, William R.

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

F04F 106, F04F 300

Patent

active

046079998

ABSTRACT:
A de-watering pump is designed for eliminating liquids in small diameter holes. An expandable air sack is designed such that the outer walls of the air sack can expand to interface with the inner walls of the hole which is to be de-watered. Pressurized air is forced into the hole. The pressurized sack prevents the escape of air up through the hole and directs the pressurized air and water from the hole out through the escape line.

REFERENCES:
patent: 3764235 (1973-10-01), Bitterman
patent: 3907463 (1975-09-01), Eller et al.
patent: 4152097 (1979-05-01), Woodard

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