Pumps – Motor driven – Fluid motor
Patent
1975-01-03
1977-02-15
Freeh, William L.
Pumps
Motor driven
Fluid motor
92 92, 417394, F04B 908
Patent
active
040080080
ABSTRACT:
The invention provides a pump adapted inter alia for the intake and delivery of liquid such as water in wells or relatively deep bodies of water. The pump comprises a rigid-walled chamber, adapted to be immersed in the liquid to be sucked in. The rigid-walled chamber has an intake valve and a delivery valve interposed between the rigid-walled chamber and a delivery tube. The pump is characterized in that it comprises, accommodated in the rigid-walled chamber, a resiliently deformable chamber associated with means for controlling, at least in one direction, alternate deformations of the chamber by expansion and retraction.
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Freeh William L.
Look Edward
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