US PATENT SUBCLASS 417 / 104
.~.~ Momentum piston

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
92  DF  .~ Liquid piston {6}
104.~.~ Momentum piston

DEFINITION

Classification: 417/104

(under subclass 92) Apparatus in which the body of liquid is set in motion and the inertia of the body of liquid (i.e., the tendency to remain in motion or at rest) being effective to produce the pumping action.