US PATENT SUBCLASS 417 / 66
.~ Contact or entrainment within rotary impeller

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
66.~ Contact or entrainment within rotary impeller {4}
67  DF  .~.~> Passage in impeller shaft for pumped or motive fluid
68  DF  .~.~> Liquid ring {1}
70  DF  .~.~> Peripheral motive fluid inlet
71  DF  .~.~> Axial inlet for pumped fluid {1}

DEFINITION

Classification: 417/66

(under subclass 65) Apparatus in which a driven element is provided to continuously and unidirectionally move the motive fluid either as slugs or a complete ring about an axis at a relatively high rate of speed, said motive fluid directly contacting and imparting energy to the fluid being pumped while in said movement about an axis.