US PATENT SUBCLASS 417 / 208
.~ Vapor generator type


Current as of: June, 1999
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417 /   HD   PUMPS

207  DF  BY HEATING OF PUMPED FLUID {1}
208.~ Vapor generator type {1}
209  DF  .~.~> With inlet valve


DEFINITION

Classification: 417/208

(under subclass 207) Apparatus in which the fluid to be pumped is a liquid, the application of heat to the liquid causing at least a portion thereof to vaporize, the vapor pressure then impelling the liquid through an outlet.