IPC 2013 : G01 : MEASURING; TESTING.

IPC2013 > G > G01[c] > MEASURING; TESTING.
Notes[t] G01 - G12: INSTRUMENTS
Notes[n] G01:
  • This class covers , in addition to "true" measuring instruments, other indicating or recording devices of analogous construction, and also signalling or control devices insofar as they are concerned with measurement (as defined in Note 2 below) and are not specially adapted to the particular purpose of signalling or control.
  • In this class, the following term is used with the meaning indicated:
    • "measuring" is used to cover considerably more than its primary or basic meaning. In this primary sense, it means finding a numerical expression of the value of a variable in relation to a unit or datum or to another variable of the same nature, e.g. expressing a length in terms of another length as in measuring a length with a scale; the value may be obtained directly (as just suggested) or by measuring some other variable of which the value can be related to the value of the required variable, as in measuring a change in temperature by measuring a resultant change in the length of a column of mercury. However, since the same device or instrument may, instead of giving an immediate indication, be used to produce a record or to initiate a signal to produce an indication or control effect, or may be used in combination with other devices or instruments to give a conjoint result from measurement of two or more variables of the same or different kinds, it is necessary to interpret "measuring" as including also any operation that would make it possible to obtain such a numerical expression by the additional use of some way of converting a value into figures. Thus the expression in figures may be actually made by a digital presentation or by reading a scale, or an indication of it may be given without the use of figures, e.g. by some perceptible feature (variable) of the entity (e.g. object, substance, beam of light) of which the variable being measured is a property or condition or by an analogue of such a feature (e.g. the corresponding position of a member without any scale, a corresponding voltage generated in some way). In many cases there is no such value indication but only an indication of difference or equality in relation to a standard or datum (of which the value may or may not be known in figures); the standard or datum may be the value of another variable of the same nature but of a different entity (e.g. a standard measure) or of the same entity at a different time.
      • In its simplest form, measurement may give merely an indication of presence or absence of a certain condition or quality, e.g. movement (in any direction or in a particular direction), or whether a variable exceeds a predetermined value.
  • Attention is drawn to the Notes following the titles of class B81 and subclass B81B relating to "micro-structural devices" and "micro-structural systems" and the Notes following the title of subclass B82B relating to "nano-structures".
  • Attention is drawn to the Notes following the title of section G, especially as regards the definition of the term "variable".
  • In many measuring arrangements, a first variable to be measured is transformed into a second, or further, variables. The second, or further, variables may be (a) a condition related to the first variable and produced in a member, or (b) a displacement of a member. Further transformation may be needed.  
    • When classifying such an arrangement, (i) the transformation step, or each transformation step, that is of interest is classified, or (ii) if interest lies only in the system as a whole, the first variable is classified in the appropriate place.  
    • This is particularly important where two or more conversions take place, for instance where a first variable, for example pressure, is transformed into a second variable, for example an optical property of a sensing body, and that second variable is expressed by means of a third variable, for example an electric effect. In such a case, the following classification places should be considered: the place for the transformation of the first variable, that for sensing the condition caused by that variable, subclass G01D for expression of the measurement, and finally the place for the overall system, if any.  
  • The measurement of change in the value of a physical property is classified in the same subclass as the measurement of that physical property, e.g. measurement of expansion of length is classified in subclass G01B .
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS.
Notes[n] G01B:
  • This subclass covers measuring of position or displacement in terms of linear or angular dimensions.
  • In this subclass, the groups are distinguished by the means of measurement which is of major importance. Thus the mere application of other means for giving a final indication does not affect the classification.
  • Attention is drawn to the Notes following the title of class G01 .
  • Machines operated on similar principles to the hand-held devices specified in this subclass are classified with these devices.
  • Measuring arrangements or details thereof covered by two or more of groups G01B 3/00 - G01B 17/00 are classified in   group G01B 21/00 if no single other group can be selected as being predominantly applicable.
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F;   radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effect, propagation time, of radio waves, analogous arrangements using other waves G01S).
Notes[n] G01C:
  • In this subclass, the following term is used with the meaning indicated:
    • "navigation" means determining the position and course of land vehicles, ships, aircraft, and space vehicles.
  • Attention is drawn to the Notes following the title of class G01 .
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR.
Notes[n] G01D:
  • This subclass covers :
    • devices for indicating or recording the results of measurements, not peculiar to variables covered by a single other subclass;
    • analogous arrangements but in which the input is not a variable to be measured, e.g. a hand operation;
    • details of measuring instruments, which are of general interest;
    • measurement transducers not adapted solely for the measurement of a single specified variable and not provided for elsewhere, i.e. 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;
    • measuring or testing not otherwise provided for.
  • Attention is drawn to the Notes following the title of class G01 .
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME.
Notes[n] G01F:
  • Attention is drawn to the Notes following the title of class G01 .
G01G WEIGHING.
Notes[n] G01G:
  • Attention is drawn to the Notes following the title of class G01 .
G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES.
Notes[n] G01H:
  • This subclass covers the combination of generation and measurement of mechanical vibrations.
  • Attention is drawn to the Notes following the title of class G01 .
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY.
Notes[n] G01J:
  • This subclass covers the detection of the presence or absence of infra-red, visible, or ultra-violet light, not otherwise provided for.
  • Attention is drawn to the Notes following the title of class G01 .
G01K MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J 5/00).
Notes[n] G01K:
  • In this subclass, the following term is used with the meaning indicated:
    • "thermometer" includes thermally-sensitive elements not provided for in other subclasses.
  • Attention is drawn to the Notes following the title of class G01 .
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G).
Notes[n] G01L:
  • Attention is drawn to the Notes following the title of class G01 .
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR.
Notes[n] G01M:
  • Attention is drawn to the Notes following the title of class G01 .
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing processes other than immunoassay, involving enzymes or micro-organisms C12M, C12Q).
Notes[n] G01N:
  • In this subclass, the following terms are used with the meanings indicated:
    • "investigating" means testing or determining;
    • "materials" includes solid, liquid or gaseous media, e.g. the atmosphere.
  • Attention is drawn to the Notes following the title of class G01 .
  • Investigating the properties of materials, specially adapted for use in processes covered by subclass B23K, is classified in group B23K 31/12 .  
G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT  (measuring angular rate using gyroscopic effects G01C 19/00; combined measuring devices for measuring two or more variables of movement G01C 23/00; measuring velocity of sound G01H 5/00; measuring velocity of light G01J 7/00; determining direction or velocity of solid objects by reflection or reradiation of radio or other waves and based on propagation effects, e.g. Doppler effect, propagation time or direction of propagation, G01S; measuring speed of nuclear radiation G01T).
Notes[n] G01P:
  • This subclass covers measuring direction or velocity of flowing fluids using propagation effects of radiowaves or other waves caused in the fluid itself, e.g. by laser anemometer, by ultrasonic flowmeter with "sing-around-system".  
  • Attention is drawn to the Notes following the title of class G01 .
G01Q SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING-PROBE MICROSCOPY [SPM].
Notes[n] G01Q:
  • In this subclass, the first place priority rule is applied, i.e. at each hierarchical level, classification is made in the first appropriate place.
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J 3/12).
Notes[n] G01R:
  • This subclass covers :
    • measuring all kinds of electric or magnetic variables directly or by derivation from other electric or magnetic variables;
    • measuring all kinds of electric or magnetic properties of materials;
    • testing electric or magnetic devices, apparatus or networks (e.g. discharge tubes, amplifiers) or measuring their characteristics;
    • indicating presence or sign of current or voltage;
    • NMR, EPR or other spin-effect apparatus, not specially adapted for a particular application;
    • equipment for generating signals to be used for carrying out such tests and measurements.
  • In this subclass, the following terms or expressions are used with the meanings indicated:
    • "measuring" includes investigating;
    • "instruments" or "measuring instruments" means electro-mechanical measuring mechanisms;
    • "arrangements for measuring" means apparatus, circuits, or methods for measuring;
  • Attention is drawn to the Notes following the title of class G01 .
  • In this subclass, instruments or arrangements for measuring electric variables are classified in the following way:
    • Electromechanical instruments where the measured electric variables direcly effect the indication of the measured value, including combined effects of two or more values, are classified in groups G01R 5/00 - G01R 11/00 .
    • Details common to different types of the instruments covered by groups G01R 5/00 - G01R 11/00 are classified in group G01R 1/00 .
    • Arrangements involving circuitry to obtain an indication of a measured value by deriving, calculating or otherwise processing electric variables, e.g. by comparison with another value, are classified in groups G01R 17/00 - G01R 29/00 .
    • Details common to different types of arrangements covered by groups G01R 17/00 - G01R 29/00 are classified in group G01R 15/00 .
  • In this subclass, group G01R 17/00 takes precedence over groups G01R 19/00 - G01R 31/00 .
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES.
Notes[n] G01S:
  • In this subclass, the following term is used with the meaning indicated:  
    • "transponder" means an arrangement which reacts to an incoming interrogating or detecting wave by emitting a specific answering or identifying wave.  
  • Attention is drawn to the Notes following the title of class G01 and to Note (1) following the title of subclass G09B .
G01T MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N 23/00; tubes for determining the presence, intensity, density or energy of radiation or particles  H01J 47/00).
Notes[n] G01T:
  • This subclass covers the measurement of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation, or neutron radiation.
  • Attention is drawn to the Notes following the title of class G01 .
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B 29/02).
Notes[n] G01V:
  • This subclass covers radar, sonar, lidar or analogous systems specifically designed for geophysical use. Radar, sonar, lidar or analogous systems, or details of such systems, if of a general interest, are also classified in subclass G01S .  
  • In this subclass, the following term is used with the meaning indicated:  
    • "tags" means arrangements cooperating with a detecting field, e.g. near field, and designed to produce a specific detectable effect; "tags" also means active markers capable of generating a detectable field.  
  • In this subclass, the geophysical methods apply both to the earth and to other celestial objects, e.g. planets.
  • Attention is drawn to the Notes following the title of class G01 .
G01W METEOROLOGY (radar, sonar, lidar or analogous systems, designed for meteorological use G01S 13/95, G01S 15/88, G01S 17/95).
Notes[n] G01W:
  • In this subclass, the following term is used with the meaning indicated:
    • "meteorology" includes measurement of certain ambient atmospheric conditions.
  • Attention is drawn to the Notes following the title of class G01 .