US PATENT SUBCLASS 417 / 148
.~.~ With vacuum generator


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}
148.~.~ With vacuum generator {1}
149  DF  .~.~.~> With pressure generator


DEFINITION

Classification: 417/148

(under subclass 118) Apparatus having the pump means, (i.e., vacuum generator), to withdraw the gaseous motive fluid from the pumping chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

119, for a device having a vacuum generator comprising a liquid the surface of which communicates with the motive fluid.