Pumps – Changeable by assembly or disassembly
Patent
1976-05-26
1979-07-10
Freeh, William L.
Pumps
Changeable by assembly or disassembly
417552, F04B 2104, F04B 2106
Patent
active
041606230
ABSTRACT:
A deep well pump includes a cylinder having a foot valve and a valved piston which is movable over a given range in the cylinder. The cylinder is preferably formed of plastic, extends above ground and below the range of movement of the piston, and is of constant diameter over its length. The piston rod also extends above ground and is of variable length to vary the range of movement of the piston. The foot valve structure and piston structure are interchangeable and connected together during operation by a slackened cable.
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Freeh William L.
Preussag Aktiengesellschaft
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