US PATENT SUBCLASS 73 / 54.37
.~.~.~ By movement or displacement between shearing surfaces

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}
54.37.~.~.~ By movement or displacement between shearing surfaces

DEFINITION

Classification: 73/54.37

By movement or displacement between shearing surfaces:

(under subclass 54.23) Subject matter wherein the determination is made by measuring the relative movement between adjacent or parallel surfaces when subjected to a predetermined force for a predetermined time.