US PATENT SUBCLASS 73 / 54.25
.~.~.~.~ Dampening effect (e.g., frequency, amplitude, speed, or power measurement)

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}
54.24  DF  .~.~.~ By vibration {2}
54.25.~.~.~.~ Dampening effect (e.g., frequency, amplitude, speed, or power measurement) {1}
54.26  DF  .~.~.~.~.~> With detail of a drive means or a detecting means

DEFINITION

Classification: 73/54.25

Dampening effect (e.g., frequency, amplitude, speed, or power measurement):

(under subclass 54.24) Subject matter wherein the determination is made by measuring a power, force, or current required to maintain a predetermined vibrational frequency or amplitude or change in frequency or amplitude of a vibrator driven by a constant force.