US PATENT SUBCLASS 415 / 28
.~.~ Of valve bypassing runner stage

Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

13  DF  WITH CONTROL MEANS RESPONSIVE TO NON-CYCLIC CONDITION SENSING, CENTRIFUGAL ACTUATION OR TORQUE {13}
26  DF  .~ Responsive to moving member developed fluid force, current or pressure {3}
28.~.~ Of valve bypassing runner stage

DEFINITION

Classification: 415/28

(under subclass 26) Apparatus comprising a plurality of runners or blade rows with a valve so arranged as to permit at least a portion of the working fluid either to pass through a runner or blade row or to be bypassed around so as not to be acted upon by a blade row, the valve actuated as a result of the sensing means responding to the force exerted by the fluid.