US PATENT SUBCLASS 416 / 38
.~.~ Drive engine condition excluding shaft speed or torque

Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

31  DF  WITH CONTROL MEANS RESPONSIVE TO NON-CYCLIC CONDITION SENSING, CENTRIFUGAL ACTUATION, TORQUE OR THRUST {9}
36  DF  .~ Plural diverse condition responsive {2}
38.~.~ Drive engine condition excluding shaft speed or torque

DEFINITION

Classification: 416/38

(under subclass 36) Apparatus comprising a motor driving the impeller and in which one condition sensed is an operating characteristic of the motor, but not including rotational speed or torque developed by the motor shaft.

(1) Note. A typical condition sensed for this subclass is manifold pressure, exhaust temperature or rate of consumption of fuel or working fluid for the motor.