US PATENT SUBCLASS 73 / 152.29
.~.~ Rate of fluid flow

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

152.01  DF  BOREHOLE OR DRILLING (E.G., DRILL LOADING FACTOR, DRILLING RATE, RATE OF FLUID FLOW) {6}
152.18  DF  .~ Fluid flow measuring or fluid analysis {6}
152.29.~.~ Rate of fluid flow {5}
152.31  DF  .~.~.~> Plural diverse measuring
152.32  DF  .~.~.~> Vibration
152.33  DF  .~.~.~> Thermal
152.34  DF  .~.~.~> Rotary {1}
152.36  DF  .~.~.~> Packer or deflector detail

DEFINITION

Classification: 73/152.29

Rate of fluid flow:

(under subclass 152.18) Subject matter wherein the determination of the characteristic of the borehole, the casing, or the drill rigging is made by measuring a speed of flow, a volume rate of flow, or a mass rate of flow of a fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

54.07, and 54.13, for determining viscosity by measuring the rate of fluid flow.

61.64, for measuring settling or filtering ability of a constituent of a liquid mixture by measuring the rate of fluid flow.

61.73, for making a determination of solid components of a liquid by measuring the rate of fluid flow.

152.21, for measuring the rate of flow of a fluid in a borehole while drilling.

170.07, and 170.11+, for fluid flow direction determination not in a borehole or in a drilling study.

861+, for measuring a rate of fluid flow measuring, per se. SEE OR SEARCH CLASS

116, Signals and Indicators,

112+, for a mechanical alarm producing a humanly perceptible signal in response to a predetermined rate of fluid flow in a borehole, a casing, or a drill rigging and combined with no measuring means, and subclasses 264+ for a mechanical indicator structure, per se, of the presence or the absence of fluid flow in a borehole, a casing, or a drill rigging.

175, Boring or Penetrating the Earth,

48, for measurement of or indication of rate of flow of drilling fluid combined with more than a mere boring step or details of a boring apparatus.

340, Communications: Electrical,

608+, for an electrical indicator or alarm providing a humanly perceptible signal in response to a predetermined rate of fluid flow in a borehole, a casing, or a drill rigging and not providing a quantitative measurement.

364, Electrical Computers and Data Processing Systems,

422, for application of an electrical computer or data processing to a determination of a rate of fluid flow in a borehole, a casing, or a drill rigging when significant electrical computer or data processing detail and no more than a nominal transducer detail are recited, and subclass 510 for application of an electrical computer or data processing to a determination of rate of fluid flow in a borehole, a casing, or a drill rigging, per se, when significant electrical computer or data processing detail and nominally recited sensor are claimed.