US PATENT SUBCLASS 417 / 105
.~ By condensation of 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}
105.~ By condensation of motive fluid {2}
106  DF  .~.~> Plural alternating pumps
107  DF  .~.~> With condition responsive control means

DEFINITION

Classification: 417/105

(under subclass 65) Apparatus in which gaseous pumping fluid is reduced to the liquid state with a resultant pressure change, which change causes the pumped fluid to be motivated.