(under subclass 19.01) Subject matter wherein the gas content of the liquid or solid is determined by measuring the rate of flow of the gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1.16+, for calibration of flow meters.
155, for determining fluid flow in bore holes.
170.07, and 170.11, for determining the rate of flow and direction of flow of fluid in meteorology and oceanology.
181+, for determining the speed of a craft with respect to a fluid.
861+, for measuring the flow of fluent material, per se.
SEE OR SEARCH CLASS 48, Gas: Heating and Illuminating,
180.1+, for metering and mixing two gases where one is a
fuel.
116, Signals and Indicators, for nonelectrical means for giving an alarm upon occurrence of fluid flow.
128, Surgery,
630+, for flow-measuring means with structure particularly adapted for placement on or in a living body.
137, Fluid Handling,
98+, for a self-proportioning flow system; and subclasses 624.11+ for a programmed or timed valve which meters fluid merely by timing the interval between opening and closing of the valve.
175, Boring or Penetrating the Earth,
48, for measuring the rate of flow drilling fluid.
222, Dispensing, particularly
14+, 59+ and 71+ for volume or rate of flow-measuring means having dispensing features or which are used in dispensing combinations. 250, Radiant Energy, particularly
258, 259+, 302+, 356.1, and 432+ for miscellaneous radiant energy responsive devices.
324, Electricity: Measuring and Testing,
306, for flow-measuring means responsive to nuclear induction.
340, Communications: Electrical,
606+, for electric means for giving a humanly perceptible indication or signal in response to a predetermined condition, such as flow of a fluid.
356, Optics: Measuring and Testing,
27+, for flow-measuring means employing lasers.
364, Electrical Computers and Data Processing Systems,
555, for measuring, testing or monitoring means utilizing electrical computer detail or data processing system detail.
377, Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,
21, for a system utilizing a pulse counter to measure fluid flow.
