US PATENT SUBCLASS 417 / 150
.~ Gravity flow motive fluid

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
150.~ Gravity flow motive fluid

DEFINITION

Classification: 417/150

(under subclass 65) Apparatus comprising a vertically disposed tube through which motive fluid drops freely under the influence of gravity, contact with or entrainment of the pumped fluid being made in the tube.