US PATENT SUBCLASS 417 / 116
.~.~.~ Controlled by means responsive to liquid level accumulation in column

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}
116.~.~.~ Controlled by means responsive to liquid level accumulation in column

DEFINITION

Classification: 417/116

(under subclass 109) Apparatus comprising float means or other nonpressure sensitive means responsive to the level of liquid accumulated, which float means controls actuation of said valve means.