US PATENT SUBCLASS 417 / 135
.~.~.~.~ With control of pumped fluid outlet

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
118  DF  .~ Liquid pumped by supplying or exhausting gaseous motive fluid to or from pumping chamber {7}
126  DF  .~.~ With float actuated control means {5}
134  DF  .~.~.~ Control of motive fluid outlet {2}
135.~.~.~.~ With control of pumped fluid outlet

DEFINITION

Classification: 417/135

(under subclass 134) Apparatus wherein said buoyant means further controls the flow of fluid which is pumped from the pumping chamber.