US PATENT SUBCLASS 73 / 152.21
.~.~.~ Rate of fluid flow

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
152.19  DF  .~.~ During drilling {2}
152.21.~.~.~ Rate of fluid flow

DEFINITION

Classification: 73/152.21

Rate of fluid flow:

(under subclass 152.19) 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 fluid flow, or a mass rate of fluid flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

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

flow.

61.73, for measuring solid components by measuring a rate of fluid flow.

152.29, for measuring a rate of flow of a fluid in a borehole.

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, per se.

SEE OR SEARCH CLASS

116, Signals and Indicators,

112+, for a mechanical alarm, per se, producing a humanly perceptible signal in response to a rate of fluid flow within a borehole, a casing, or a drill rigging; and subclasses 264+ for a mechanical indicator structure, per se, providing a humanly perceptible signal responsive to a rate of fluid flow within a borehole, a casing, or a drill rigging.

175, Boring or Penetrating the Earth,

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

250, Radiant Energy,

253+, for determining rate of a fluid flow within a borehole, a casing, or a drill rigging by measuring invisible light.

324, Electricity: Measuring and Testing,

306, for determining a rate of flow of a volume of fluid within a borehole, a casing, or a drill rigging by subjecting the fluid to magnetic resonance, and subclasses 324+ for a determination of a rate of fluid flow within a borehole by making a purely electrical measurement.

340, Communications: Electrical,

608+, for an electrical indicator providing a humanly perceptible signal in response to a predetermined rate of flow of a fluid flowing within a borehole, a casing, or a drill rigging and not providing a quantitative measurement. 356, Optics: Measuring and Testing, appropriate subclass for determining a rate of flow of a fluid in a borehole, a casing, or a drill rigging by measuring visible light.

364, Electrical Computers and Data Processing Systems,

420+, 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 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, per se, when significant electrical computer or data processing detail and nominally recited sensor are claimed.

378, X-Ray or Gamma Ray Systems or Devices, appropriate subclass for determining the flow rate of a fluid in a borehole, a casing, or a drill rigging by measuring a property of an X-ray or a gamma ray.