US PATENT SUBCLASS 417 / 110
.~.~.~ With pumped fluid velocity or flow responsive valve operating means

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
108  DF  .~ Aerated column {1}
109  DF  .~.~ Valved gas inlet {7}
110.~.~.~ With pumped fluid velocity or flow responsive valve operating means

DEFINITION

Classification: 417/110

(under subclass 109) Apparatus having (1) fluid impinging means in the flow path of the liquid to be pumped, to be acted upon thereby, or (2), means responsive to the velocity of the moving liquid being pumped comprising a restricted passageway.