US PATENT SUBCLASS 417 / 172
.~.~ Concentric reverse flow motive fluid and discharge conduits

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
151  DF  .~ Jet {23}
172.~.~ Concentric reverse flow motive fluid and discharge conduits

DEFINITION

Classification: 417/172

(under subclass 151) Apparatus provided with a conduit for supplying motive fluid to the entrainment area and a conduit for conducting motive and pumped fluid from the entrainment area, one conduit being concentrically disposed within the other. The direction of flow of the motive fluid being opposite to the direction of flow of the combined motive and pumped fluid.