US PATENT SUBCLASS 73 / 54.31
.~.~.~.~ By measuring the driving force or the speed of the driven member

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

53.01  DF  LIQUID ANALYSIS OR ANALYSIS OF THE SUSPENSION OF SOLIDS IN A LIQUID {15}
54.01  DF  .~ Viscosity {11}
54.23  DF  .~.~ Force reactance to member driven therein {5}
54.28  DF  .~.~.~ Rotationally driven member {4}
54.31.~.~.~.~ By measuring the driving force or the speed of the driven member

DEFINITION

Classification: 73/54.31

By measuring the driving force or the speed of the driven member:

(under subclass 54.28) Subject matter wherein the determination is made by measuring the drive current or voltage for maintaining the member rotating at a constant speed or by measuring a speed of the driven member when driven by a constant force.