US PATENT SUBCLASS 417 / 187
.~.~.~ By controlling 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}
151  DF  .~ Jet {23}
182  DF  .~.~ Regulation {7}
187.~.~.~ By controlling motive fluid {2}
188  DF  .~.~.~.~> Interrelated with pumped fluid control
189  DF  .~.~.~.~> Pressure controlled

DEFINITION

Classification: 417/187

(under subclass 182) Apparatus in which the controlling means is positioned in the motive fluid inlet line upstream of the entrainment area or at the point of discharge into the entrainment area.

SEE OR SEARCH THIS CLASS, SUBCLASS:

162, for interrelated motive fluid and overflow valves.

165+, for successive introduction of motive fluid into the pumped fluid with individually controlled motive fluid flows.

179, for plural motive fluid jets or sources for a single entrainment with individual or relative control of the jets or sources.

186, for controlling means to by-pass motive fluid from the entrainment nozzle.