Skip over navigation
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR (means structurally associated with lightning or other over-voltage discharging apparatus for recording the operation thereof G01R; displaying information in general G09F; recording in a way which requires playback through a transducer G11B)
Definition statement
This subclass/group covers:

Measuring arrangements or apparatus giving results other than momentary value of a variable, and not specially adapted for a variable covered by a single other subclass, e.g.

giving mean values, root mean square [RMS] or integral values

signalling that a predetermined value has been exceeded.

Measuring arrangements with provision for special purposes, e.g.

for altering or correcting the transfer function

for mitigating undesired influences, such as temperature or pressure.

Component parts of said measuring apparatus or arrangements.

Testing or calibrating said measuring apparatus or arrangements.

Indicating or recording measured values not specially adapted for a specific variable

  • Apparatus or arrangements for indicating or recording the results of measurements, not specially adapted for variables covered by a single other subclass, e.g. general recording by stylus and paper roll.
  • Component parts of said indicating or recording apparatus or arrangements.
  • Testing or calibrating said indicating or recording apparatus or arrangements.
  • Tariff meters
  • Apparatus or arrangements for tariff metering in general.
  • Component parts of taiff metering apparatus or arrangements.
  • Testing or calibrating tariff metering apparatus or arrangements.
Relationship between large subject matter areas

G01D covers measuring arrangements, or arrangements for indicating, recording or transducing measurements not specially adapted for a specific variable covered by a single other subclass. Therefore when the variable is specified and covered by a single other subclass of G01, classification should be directed to that subclass.

For example, classification should be directed to G01D for measuring arrangements giving the RMS value of an unspecified variable, or signalling that a predetermined value of an unspecified variable has been exceeded. Instead, when the variable under consideration is specified (e.g. a voltage, liquid level or temperature), and a single other subclass exists that covers measurements of that variable (e.g. G01R, G01F or G01K respectively) then classification should be directed to that subclass.

References relevant to classification in this subclass
This subclass/group does not cover:
Tariff meters for measuring the time integral of electric power or current, e.g. electric consumption
Measuring root mean square [RMS] values of currents or voltages
Tariff metering apparatus in taxi's, i.e. taximeters
Apparatus actuated by coins, cards or the like with meter-controlled dispensing of liquid, gas, or electricity
Means structurally associated with lightning or other over-voltage discharging apparatus for recording the operation thereof
displaying information in general
Recording in a way which requires playback through a transducer
Informative references
Attention is drawn to the following places, which may be of interest for search:
Data loggers (animals/veterinary)
Data loggers (medical)
Ink-jet printers
Dashboard instruments
Illumination of dashboard instruments
Steering sensors
Light sources
Measuring length, thickness, dimensions etc.
Measuring of force, pressure, strain, torque etc.
Testing of machines
Bearings incorporating rotation sensors
Measuring electric or magnetic variables
Control systems
Graphical User Interfaces
Data loggers (architecture)
Telemetry
Resistors
Smart metering/smart homes
A/D converters
Wireless communication networks
Special rules of classification within this subclass

Any documents discussing the compensation or correction of errors in position encoding systems should be classified in G01D 5/244 and sub-groups rather than in G01D 3/00.

Measuring arrangements giving results other than momentary value of variable, of general application (G01D 3/00 takes precedence; in tariff metering apparatus G01D 4/00; transducers not specially adapted for a specific variable G01D 5/00; computing G06)
Definition statement
This subclass/group covers:

Analysis of measured values

  • Root Mean Square (RMS)
  • Integration
  • Differentiation
  • Distribution

Detecting the maxima or minima of a measured value

Producing a product or a ratio of measured values

Signalling that an unspecified parameter has exceeded a predetermined value

References relevant to classification in this main group
This subclass/group does not cover:
Measuring arrangements with provision for the special purposes referred to
Indication that a specified parameter has exceeded a predetermined value for fluid level
Indication that a specified parameter has exceeded a predetermined value for temperature
Root Mean Square values of current or voltage
Informative references
Attention is drawn to the following places, which may be of interest for search:
In tariff metering apparatus
Transducers not specially adapted for a specific variable
Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
Definition statement
This subclass/group covers:

Correcting or altering the law of variation

Using purely analogue techniques

Using digital techniques (i.e. correction data stored in a memory)

Mitigating undesired influences (due to e.g. temperature or pressure changes)

By averaging, gating undesired signals etc.

By detecting the undesired influence and correcting for its effect

Determining the correct operation of a measuring apparatus

Further details of subgroups

  • Includes mechanical/electro-mechanical systems, any analogue circuits which involve switching, digital arrangements not involving use of a memory;
  • Correcting/compensating for non-linearities;
  • Compensating for temperature, pressure etc., see G01D 3/028 and sub-groups.
  • Includes mechanical arrangements, materials etc.; sub-groups take precedence.
  • Includes systems having feedback, but no switching.
  • Only digital or analogue/digital systems using memories; also include temperature correction methods involving memories;
  • TEDS (Transducer Electronic Data Sheet);
  • Overlaps with G01D 18/008 (Calibration). Documents classified here deal with how calibration data is used and not how calibration data is produced, which is classified in G01D 18/008

G01D 3/036 and G01D 3/0365 take precedence.

  • Sensors having a "self-correction" action, inc. those having components sensitive to the undesired effect, but not producing actual signals;
  • Signals fed-back to sensor, to regulate supply voltage, frequency, gain etc.;
  • Dual sensors measuring the desired parameter, the signals being combined to remove undesired effects;
  • Sensors producing e.g. temperature dependent signal (resistive value of inductive sensor) as well as the sensed parameter;
  • G01D 3/0365 takes precedence.
  • Dual (identical) sensor arrangements where only one sensor is affected by desired parameter, while the other sensor is only affected by undesired parameter;
  • A signal representing the undesired parameter must be produced, which is further processed;
  • For sensor arrangements where a sensitive element is placed e.g. in a feedback loop, see G01D 3/036.
  • e.g. after reaching a certain threshold.
References relevant to classification in this main group
This subclass/group does not cover:
Incremental/absolute/pulse type position encoders
Informative references
Attention is drawn to the following places, which may be of interest for search:
Testing or monitoring circuits in sensor systems
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
TEDS
Transducer Electronic Data Sheet
Tariff metering apparatus (tariff meters for measuring the time integral of electric power or current G01R 11/56; in taximeters G07B 13/00; coin-feed mechanisms therefor G07F)
Definition statement
This subclass/group covers:

Smart utility meters

Remote reading of utility meters

Reading directly to a remote (e.g. central) location

Reading indirectly (e.g. via a mobile or handheld reader)

Adaptation of existing meters, for conversion into smart meters

Display of actual utility consumption and/or the pricing or cost

Determination of the layout or topology of utility meters connected to an electricity grid

Outage detection in an electrical grid

Real-time monitoring of power generated by renewable sources.

Further details of subgroups

Relationship between large subject matter areas

The measuring of electrical power is to be classified in G01R.

Although transmission of utility data is covered by G01D, the techniques for transmitting such data should be classified in G08C, H04Q 9/00 and H04W .

Although smart utility meters should be in G01D, where smart utility meters are combined within a building (smart homes), H02J should be used

Where the utility being measured is a fluid (i.e. gas or water), then G01F 15/00 should also be considered.

References relevant to classification in this main group
This subclass/group does not cover:
Tariff meters for measuring the time integral of electric power or current
Taximeters
Coin-feed mechanisms for taximeters
Informative references
Attention is drawn to the following places, which may be of interest for search:
Measurement of electrical voltage, current or power
Smart homes
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
SCADA
Supervisory Command And Data Acquisition
AMR
Automatic Meter Reading
Smart meter
A utility meter which is either able to transmit measured utility data to a remote/central location and/or is able to display accurate consumption, pricing and/or cost information to the consumer
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable (G01D 3/00 takes precedence; specially adapted for apparatus giving results other than momentary value of variable G01D 1/00; sensing members, see the relevant subclasses, e.g. of G01, H01; for converting a single current or a single voltage into a mechanical displacement G01R 5/00; specially adapted for high-voltage or high-current measuring arrangements G01R 15/04, G01R 15/14; measuring currents or voltages using digital measurement techniques G01R 19/25; transmission systems for measured values, control or similar signals G08C, e.g. electrical signals G08C 19/00)
Definition statement
This subclass/group covers:

Sensors, transducers

  • Hall sensors
  • Magneto-resistive sensors
  • Inductive sensors
  • Capacitive sensors
  • Optical sensors
  • Fiber-optic sensors
  • Magnetostrictive sensors
  • Other sensor types (i.e. piezoelectric, Wiegand, magneto-optical)

Sensors using particle or wave means (i.e. ultrasonic, microwave)

Sensors using gears, levers, magnetic coupling etc.

Encoders

  • Incremental encoders
  • Absolute encoders
  • Pseudo-random encoders
  • Error correction/prevention in encoders

Further details of subgroups

  • Position sensing arrangements using magnetically sensitive (semiconductor) devices;
  • Inductive sensors, see G01D 5/20 and G01D 5/22 and sub-groups;
  • Magneto-resistive devices in general, see G01R 33/09;
  • Joysticks, see G05G 9/047 and G06F3/033C.

Adjustable resistors, see H01C 10/00.

Rotary switches, see H01H 19/00.

Includes circuits associated with measuring the capacitance of capacitive sensors;

see also proximity switches (H03K 17/955) and touch switches (H03K 17/96);

See also G01R 27/26.

Includes counting high frequency clock pulses as well as combining, inverting or delaying input pulses to produce higher frequency pulses.

Includes documents using memories to produce SIN/COS (i.e. interpolation of incremental signals).

Not to be used (virtually empty).

Either quadrature or single detector incremental encoders.

Reference marks either on same encoder or on separate encoder;

See also G01D 5/366.

e.g. PPM (pulse position modulation).

Virtually empty, sub-groups take precedence;

Single track encoders with single or multiple detectors;

See G01D 5/2455 for single track encoders equipped with incremental or clocking track.

As for G01D 5/2492, but includes only those documents which specifically mention using a pseudo-random code.

Multi-track/multi-detector encoders.

Includes conductive encoders;

Rotary switches, see H01H 19/00.

Typically Reed switches are found here.

Compensation of undesired effects in optical measuring systems.

Not using optical fibres;

See also G01B 9/02041.

The fibre is only used as transmitting means and not for sensing.

e.g. Twin diodes for following a line.

Not polarisation encoders.

e.g. Polariser and analyser system.

Optical encoders.

Not the coding part: only the physical construction of the scale.

e.g. lens arrangement for concentrating the light.

Coupling between the axis of rotation and the encoder.

How the encoding is made;

Encoder without incremental coding.

Coding must have some incremental coding and some analogue coding.

Coding must have some incremental coding and no analogue coding at all.

The fibre is the sensitive element;

Also contains fibre interferometer and Bragg sensors;

See also G01D 5/268 for Bragg.

Relates to the processing of the detected pulses of light.

Reference of incremental scales.

Encoders with diffraction gratings are also here.

Data loggers incorporating wireless transmission means should have the class G01D 9/005.

Using means specified in two or more of groups G01D 5/02, G01D 5/12, G01D 5/26, G01D 5/42 and G01D 5/48.

References relevant to classification in this main group
This subclass/group does not cover:
Measuring arrangements with provision for the special purposes referred to in the subgroups
For converting a single current or a single voltage into a mechanical displacement
Specially adapted for high-voltage or high-current measuring arrangements
Measuring currents or voltages using digital measurement techniques
Transmission systems for measured values, control or similar signals
Informative references
Attention is drawn to the following places, which may be of interest for search:
Measurement of specific parameters, i.e. length, thickness, alignment, angles etc.
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
GMR
Giant magneto-resistance
AMR
Anisotropic magneto-resistance
Indicating measured values
Definition statement
This subclass/group covers:

The displaying of measured values

  • Analogue and numerical indication
  • Indication by colour change
  • Indication using tactile feedback

Indicating two or more values simultaneously

On the same of different screen

In co-ordinate form

Audible indication of measured values

  • Measuring arrangements incorporating speech synthesizers
  • Representing measurements using tones

Arrangements of instruments in vehicles or aircraft cockpits

Informative references
Attention is drawn to the following places, which may be of interest for search:
Specific details about vehicle dashboards
Aircraft cockpits in genera
General constructional details of displays
Special rules of classification within this main group

See also G12B 11/00 and sub-groups.

Recording measured values
Definition statement
This subclass/group covers:

The recording of measured values

  • Solid state data-loggers
  • Recording measured values on a recording medium
  • Recording measured values with respect to time
  • Recording measured values with respect to another measured value

Further details of subgroups

Informative references
Attention is drawn to the following places, which may be of interest for search:
Animal/veterinary data loggers
Medical data-loggers
Construction of data-loggers
Component parts of measuring arrangements not specially adapted for a specific variable (G01D 13/00, G01D 15/00 take precedence)
Definition statement
This subclass/group covers:

Constructional aspects of measuring arrangements

  • Bearings, suspensions
  • Balancing or damping movement
  • Housings for instruments
  • Housings for sensors
  • Illumination of measuring devices
  • Mountings for sensors or instruments

Further details of subgroups

Also includes details of rotary shaft couplings;

Check also G01D 5/34738.

See also G01D 5/34738.

Also includes details of sensor mountings;

Covers for utility meters, see H02B 1/03;

Flanged joints and sealings, see F16L 23/00.

See also G01D 13/265;

Includes supports for sensor housings;

H03K 17/9505 constructional details of proximity switches;

F16M 11/00 or F16M 13/00 supports in general.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Vehicle dashboards
Illumination of vehicle instruments
Light sources in general
Component parts of indicators for measuring arrangements not specially adapted for a specific variable
Component parts of recorders for measuring arrangements not specially adapted for a specific variable
General constructional details
Component parts of indicators for measuring arrangements not specially adapted for a specific variable
Definition statement
This subclass/group covers:

Component parts of measurement indicators

  • Scales
  • Dials
  • Graduation
  • Pointers
  • Pointers adapted to transmit light

Further details of subgroups

Transparent pointers for conducting light are found in G01D 13/265;

See also G01D 11/28.

Component parts of recorders for measuring arrangements not specially adapted for a specific variable
Definition statement
This subclass/group covers:

Recording type

  • Punching or deforming the recording medium
  • Heating the recording medium
  • Recording magnetically
  • Recording optically
  • Printing

Drives for bringing the recording element into contact with the recording medium

Holding devices for the recording medium

The shape of the recording medium

Circular

Cylindrical

Strip or tape

Informative references
Attention is drawn to the following places, which may be of interest for search:
Printing per se
Chemical composition of ink
Testing or calibrating of apparatus or arrangements provided for in groups G01D 1/00 to G01D 15/00
Definition statement
This subclass/group covers:

Further details of subgroups

Deals with how calibration data is created;

Overlaps with G01D 3/022 (the use of stored calibration data to improve measurement accuracy).

References relevant to classification in this group
This subclass/group does not cover:
Testing or calibrating encoders
Measuring or testing not otherwise provided for
Definition statement
This subclass/group covers:

Measuring or testing not specifically covered by other sub-groups

Measuring two or more variables simultaneously

i.e. pressure and temperature sensors in the same housing

Transmission of measured values

  • Wirelessly
  • Sensor networks
  • Two-wire transmitters
This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013