US PATENT SUBCLASS 417 / 133
.~.~.~.~.~ With overcenter valve actuator means

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}
130  DF  .~.~.~ Control of motive fluid inlet (e.g., atmosphere, etc.) {1}
131  DF  .~.~.~.~ With control of motive fluid outlet {2}
133.~.~.~.~.~ With overcenter valve actuator means

DEFINITION

Classification: 417/133

(under subclass 131) Apparatus wherein the float means initiates the operation of an over center (e.g., spring, weight, etc.) valve actuator to control the flow of motive fluid to and from the pumping chamber.