US PATENT SUBCLASS 73 / 54.19
.~.~.~ Including detail of a timing detection circuit

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}
54.15  DF  .~.~ Gravity movement of an object in a liquid (e.g., a bubble) {5}
54.19.~.~.~ Including detail of a timing detection circuit

DEFINITION

Classification: 73/54.19

Including detail of a timing detection circuit:

(under subclass 54.15) Subject matter wherein significance is attributed to an electrical circuit for detecting the time of flight of the object in the liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

54.13, for determining viscosity by measuring a time interval of travel or flow rate using an orifice, nozzle, or extrusion means wherein there is disclosed detail of a means whose optical character changes due to a change in a physical phenomenon associated with the liquid whose viscosity is being measured.

SEE OR SEARCH CLASS

368, Horology: Time Measuring Systems or Devices,

89+, for time interval measuring, per se.