US PATENT SUBCLASS 366 / 264
.~.~.~ Impeller with outer stationary ring

Current as of: June, 1999
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366 /   HD   AGITATING

241  DF  STIRRER WITHIN STATIONARY MIXING CHAMBER {10}
262  DF  .~ Pump type {4}
263  DF  .~.~ Centrifugal {2}
264.~.~.~ Impeller with outer stationary ring

DEFINITION

Classification: 366/264

Impeller with outer stationary ring:

(under subclass 263) Subject matter wherein the centrifugal pump comprises a rotating impeller and an outer stationary ring located in the same general diametrical plane with the impeller.