US PATENT SUBCLASS 73 / 54.01
.~ Viscosity

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.~ Viscosity {11}
54.02  DF  .~.~> Combined with other measuring means
54.03  DF  .~.~> Of concrete (e.g., slump indicator)
54.04  DF  .~.~> Friction tube (e.g., capillary) {3}
54.11  DF  .~.~> Orifice, nozzle, or extrusion means {3}
54.15  DF  .~.~> Gravity movement of an object in a liquid (e.g., a bubble) {5}
54.22  DF  .~.~> Adhesion between wetted surfaces
54.23  DF  .~.~> Force reactance to member driven therein {5}
54.39  DF  .~.~> Shearing torque between parallel surfaces
54.41  DF  .~.~> Vibration
54.42  DF  .~.~> Thermal
54.43  DF  .~.~> With detail of a pressure or a temperature regulating means

DEFINITION

Classification: 73/54.01

Viscosity:

(under subclass 53.01) Subject wherein the determination is of the resistance of the liquid to change in shape or a force within the liquid that opposes motion therein (e.g. flow, usually by internal force reaction or energy absorption).

SEE OR SEARCH THIS CLASS, SUBCLASS:

822, for viscosity measurement in a solid by compressional testing.

843, for viscosity measurement in a solid by shear testing using a rotary element.

862.08+, for torque measurement, per se.

862.38+, for force measurement, per se.