US PATENT SUBCLASS 324 / 76.11
MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE

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

76.11MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE {46}
76.12  DF  .~> Analysis of complex waves {3}
76.39  DF  .~> Frequency of cyclic current or voltage (e.g., cyclic counting etc.) {6}
76.77  DF  .~> Phase comparison (e.g., between cyclic pulse voltage and sinusoidal current, etc.) {11}
92  DF  .~> Fluid (e.g., thermal expansion) {1}
95  DF  .~> With waveguide or long line
96  DF  .~> Using radiant energy {1}
98  DF  .~> Balancing (e.g., known/unknown voltage comparison, bridge, rebalancing) {1}
101  DF  .~> Non-rebalancing bridge
102  DF  .~> Transient or portion of cyclic
103 R  DF  .~> Demand, excess, maximum or minimum (e.g., separate meters for positive and negative power, peak voltmeter) {2}
105  DF  .~> Thermal (e.g., compensation) {1}
107  DF  .~> Polyphase {1}
109  DF  .~> Electrostatic attraction or piezoelectric
110  DF  .~> Meter protection or fraud combatting
111  DF  .~> With storage means for voltage or current (e.g., condenser banks) {1}
113  DF  .~> Recording
114  DF  .~> Plural meters (e.g., plural movements in one case)
115  DF  .~> Plural ranges, scales or registration rates {1}
117 R  DF  .~> Magnetic saturation (e.g., in field or in amplifier) {1}
118  DF  .~> Modulator/demodulator
119  DF  .~> With rectifier (e.g., A.C. to D.C.)
120  DF  .~> With voltage or current conversion (e.g., D.C. to A.C., 60 to 1000)
121 R  DF  .~> Cathode ray (e.g., magic eye) {1}
122  DF  .~> Gaseous discharge (e.g., spark gap voltmeter)
123 R  DF  .~> With amplifier or space discharge device {2}
125  DF  .~> Inertia control, instrument damping and vibration damping
126  DF  .~> With coupling means (e.g., attenuator, shunt) {2}
129  DF  .~> Polepiece (e.g., split) admits nonunitary input conductor
130  DF  .~> Self-calibration
131  DF  .~> Suppressed zero
132  DF  .~> Nonlinear (e.g., Thyrite)
133  DF  .~> Nonquantitative (e.g., hot-line indicator, polarity tester)
134  DF  .~> With commutator or reversing or pulsating switch (e.g., D.C. watt-hour meter) {1}
136  DF  .~> With rolling wheel or ball (e.g., transmission, integrating)
137  DF  .~> Eddy current rotor (e.g., A.C. integrating wattmeter) {1}
139  DF  .~> Motor-driven, time-controlled or oscillating (e.g., ratchet)
140 R  DF  .~> Plural inputs (e.g., summation, ratio) {3}
143  DF  .~> Plural active motor elements (e.g., for two crossed pointers)
144  DF  .~> With electromagnetic field (e.g., dynamometer) {3}
149  DF  .~> With probe, prod or terminals
150  DF  .~> Eccentrically pivoted coil
151 R  DF  .~> With permanent magnet {2}
153  DF  .~> With register
154 R  DF  .~> With rotor (e.g., filar suspension, zero set, balancing) {2}
156  DF  .~> Casings
157  DF  .~> Combined

DEFINITION

Classification: 324/76.11

MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE:

(under the class definition) Subject matter relating to the measurement of electric voltages or currents, or combinations thereof, when said electric voltages and currents do not occur in a significantly recited external environment.

(1) Note. Measurement requires sensing and some indication of the result of the sensing. The indication can be quantitative, as in a calibrated voltmeter, or qualitative, as in an uncalibrated cathode-ray oscilloscope or a "hot line" indicator. No distinction is made in these subclasses between testing and measuring.

(2) Note. The definition is not limited to subject matter which indicates the result of the measurement, but covers the sensing subcombination as well. Such subcombinations, when disclosed as having utility only in the measurement of this subclass, are generally classified here, but when disclosed to a specific art device, are classified in one of the classes referred to under the search notes.

(3) Note. The recited external environment is significant to the measurement when there is a disclosed significant relation or when the claims recite, by more than name only, more of the environment than is necessary for the performance of the measurement. When the external environment is not significant, for example, a meter which indicates the phase difference between A-C voltages in different circuits, will be classified in this class even though one of the inputs is recited as being from a generator and the other as being from a power system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72, for this subject matter in combination with a specific environment. See (3) Note above.

SEE OR SEARCH CLASS 73, Measuring and Testing, appropriate subclasses for nonelectrical measuring and testing and for electrical measuring and testing in combination with non- electrical measuring and testing. See the proceeding Class 324 definition notes for specific subclasses.

315, Electric Lamp and Discharge Devices: Systems,

1+, for cathode-ray tube circuits of general application, including those for producing a visual grid on the face of the tube for calibration purposes.

340, Communications: Electrical,

870.01+, for telemetering systems for indicating at a remote point the value of a local condition. Class 324 provides for significant measuring, testing, or sensing of electricity, per se, and the indication of the result, whether by a telemetering system or otherwise.

356, Optics: Measuring and Testing, appropriate subclasses for measuring and testing light.

362, Illumination,

23, for illuminated dial or scale, some of which can be used as voltage or current indicators.

370, Multiplex Communications,

241+, for testing (other than synchronization) of a multiplex communication element.

374, Thermal Measuring and Testing, appropriate subclasses for thermal measuring and testing.

375, Pulse or Digital Communications, 224+, for measuring and testing of pulse or digital communications device.

379, Telephonic Communications,

1+, for diagnostic testing, malfunction indication, or electrical condition measurement of a telephonic communication device.

455, Telecommunications,

115, for measuring and testing of a transmitter and subclass 226 for measuring and testing of a receiver in telecommunications.

714, Error Detection/Correction and Fault Detection/Recovery, appropriate subclasses for error detection, correction, recovery or prevention in pulse code data or computers.