G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 G01B
MEASURING LENGTH, THICKNESS, OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS (measuring human body, see the relevant places, where such exist, e.g. A41H 1/00, A43D 1/02, A61B 5/10; measuring appliances combined with walking-sticks A45B 3/08; sorting according to dimensions B07; tool-setting or drawing instruments not specially modified for measuring B23B 49/00, B23Q 15/00, B23Q 17/00, B43L; combinations of measuring devices with writing-appliances B43K 29/08; geodetical, nautical or aeronautical measuring, surveying, rangefinding G01C; photogrammetry G01C 11/00; measuring force G01L 1/00; investigating particle size, investigating surface area of porous material G01N; using radar, using sonar, using analogous systems employing other waves G01S; geophysical measuring G01V; measuring length or roll diameter of film in cameras or projectors G03B 1/60; combinations of measuring devices with means for controlling or regulating G05; measuring elapsed travel of recording medium in recording and playback equipment, sensing diameter of record in autochange gramophones G11B; means structurally associated with electric rotary current collectors for indicating brush wear H01R 39/58; indicating consumption of electrodes in arc lamps H05B 31/34)
 G01B

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. Measuring, by methods of general application, displacements, e.g. of the pointer of a measuring instrument, which are caused by variables of which the measurement is not covered by this sub-class, is dealt with in sub-class G01D.
  3. The groups of this sub-class 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.
  4. Machines operated on similar principles to the hand-held devices specified in this sub-class are classified with these devices.

 G01C
MEASURING DISTANCES, LEVELS, OR BEARINGS, FOR SURVEYING OR NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY (measuring angles or linear dimensions in general G01B; measuring liquid level G01F; measuring intensity or direction of magnetic fields, other than the earth's field, in general G01R; involving the emission and reception of radio waves, other electromagnetic waves or sonic waves G01S; optical systems therefor G02B; maps, globes G09B)
 G01C

Note(s)

  1. Attention is drawn to the notes immediately following the title of class G01.
  2. In this sub-class, "navigation" means determining the position and course of land vehicles, ships, aircraft, and space vehicles.

 G01D
INDICATING OR RECORDING IN CONNECTION WITH MEASURING IN GENERAL; DEVICES OR INSTRUMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUB-CLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR (means structurally associated with lightning or other overvoltage discharging apparatus for recording the operation thereof G01R; displaying information in general G09F; recording in a way which requires playback through a transducer G11B)
 G01D

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. This sub-class includes:
    1. devices for indicating or recording the results of measurements, not peculiar to variables covered in a single other sub-class;
    2. analogous apparatus but in which the input is not a variable to be measured, e.g. a hand operation;
    3. details of measuring instruments, which are of general interest;
    4. measurement transducers not adapted solely for the measurement of a single specified variable and not provided for elsewhere;
    5. measuring or testing not otherwise provided for.

 G01F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME (burettes or pipettes B01L 3/02; arrangements of liquid volume meters or volume-flow meters in liquid-delivering apparatus, e.g. for retail sale purposes, B67D 5/16; pumps, fluid motors, details common to measuring or metering devices and pumps or fluid motors F01-F04)  [2]
 G01F

Note(s)

Attention is drawn to the notes immediately following the class title (G01).


 G01G
WEIGHING (sorting by weighing B07C 5/16)
 G01G

Note(s)

Attention is drawn to the notes immediately following the class title (G01).


 G01H
MEASUREMENT OF MECHANICAL VIBRATIONS, e.g. OF SOUND WAVES (generation of mechanical vibrations without measurement B06B, G10, H04R; measuring position, direction or velocity of an object G01C, G01S; transducers per se, see the relevant sub-classes, e.g. G01L, H01L, H04R; determining unbalance G01M 1/14; determining properties of materials by sonic or ultrasonic waves transmitted therethrough G01N; seismology, seismic prospecting, acoustic prospecting G01V 1/00; recording vibrations for subsequent reproduction G10L, G11B; manufacture of electromechanical resonators by processes which include measurement of frequency with consequential modification of the resonator H03H 3/00)
 G01H

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. This sub-class includes the combination of generation and measurement of mechanical vibrations.

 G01J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, OR PHASE OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N)  [2]
 G01J

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. This sub-class includes the detection of the presence or absence of infra-red, visible, or ultra-violet light, not otherwise provided for.

 G01K
MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (sensing temperature changes for compensating measurements of other variables or for compensating readings of instruments for variation in temperature, see G01D or relevant sub-class for variable measured; radiation pyrometry G01J; testing or determining physical or chemical properties of materials by measuring temperatures G01N; compound sensitive elements, e.g. bimetallic, G12B 1/02)
 G01K

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. In this sub-class, the word "thermometer" includes thermally-sensitive elements not provided for in other sub-classes.

 G01L
MEASURING FORCE, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (sensing pressure changes for compensating measurements of other variables or for compensating readings of instruments for variations in pressure G01D or relevant sub-class for the variable measured; weighing G01G)
 G01L

Note(s)

Attention is drawn to the notes immediately following the class title (G01).


 G01M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
 G01M

Note(s)

Attention is drawn to the notes immediately following the class title (G01).


 G01N
INVESTIGATING CHEMICAL OR PHYSICAL PROPERTIES OF MATERIALS (apparatus fully provided for in a single other sub-class, see the relevant sub-class, e.g. B01L; separating components of materials in general B01D, B01J, B03, B07; measuring or testing involving enzymes or micro-organisms C12M, C12Q; investigation of foundation soil in situ E02D 1/00; sensing humidity changes for compensating measurements of other variables or for compensating readings of instruments for variations in humidity, see G01D or relevant sub-class for variable measured; testing or determining the properties of structures G01M; measuring or investigating electric or magnetic properties of materials G01R; determining sensitivity, graininess, or density of photographic materials G03C 5/02; testing component parts of nuclear reactors G21C 17/00)
 G01N

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. In this sub-class, the term "investigating" means testing or determining, and the term "materials" includes solid, liquid, and gaseous media, e.g. the atmosphere.

 G01P
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (monitoring speed or deceleration of electrically-propelled vehicles B60L 3/00; vehicle lighting systems adapted to indicate speed B60Q 1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C 23/00; measuring velocity of sound G01H; measuring velocity of light G01J 7/00; by reception or emission of radio waves, other electromagnetic waves, or sonic waves, and based on propagation time G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V)
 G01P

Note(s)

Attention is drawn to the notes immediately following the class title (G01).


 G01R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (measuring physical variables of any kind by conversion into electric variables, see Note (4) following the title of class G01; measuring diffusion of ions in an electric field, e.g. electrophoresis, electro-osmosis, G01N; investigating non-electric or non-magnetic properties of materials by using electric or magnetic methods G01N; indicating correct tuning of resonant circuits H03J 3/12; monitoring electronic pulse counters H03K 21/34; monitoring operation of communication systems H04)
 G01R

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. This sub-class deals with (a) measuring all kinds of electric and magnetic variables directly or by derivation from other electric or magnetic variables; (b) measuring all kinds of electric and magnetic properties of materials; (c) testing electric and magnetic devices, apparatus, and networks (e.g. discharge tubes, amplifiers) and measuring their characteristics; (d) indicating presence or sign of current or voltage; (e) equipment for generating signals to be used for carrying out such tests and measurements.
  3. The expression "measuring" is used to include investigating.
  4. In this sub-class:
    1. The expression "arrangements for measuring" is used to mean "apparatus, circuits, or methods for measuring".
    2. Electric measuring instruments of the general types dealt with in groups G01R 5/00, G01R 7/00, G01R 9/00 but specially adapted for measuring a specific variable, e.g. frequency, phase, impedance, are dealt with in the groups relevant to such variables.
    3. Group G01R 17/00 takes precedence over groups G01R 19/00-G01R 31/00.

 G01S
RADIO DIRECTION-FINDING, LOCATING, DISTANCE OR VELOCITY MEASURING; RADIO NAVIGATION SYSTEMS; ANALOGOUS SYSTEMS EMPLOYING OTHER WAVES (for special applications, see the relevant sub-classes, e.g. A61B, G01N; navigation in general G01C; measuring infrasonic, sonic, or ultrasonic vibrations in general G01H; measuring infra-red, visible, or ultra-violet radiation in general G01J; transducers per se, see the relevant sub-classes, e.g. G01L, H01L, H04R; measuring electric or magnetic variables in general G01R; detecting masses or objects not involving reflection or reradiation, geophysics G01V; aerials H01Q)
 G01S

Note(s)

Attention is drawn to the notes immediately following the class title (G01), and to Note (1) following the title of sub-class G09B.


 G01T
MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N; counters per se G06M, H03K; electric discharge tubes for analysing radiation or particles H01J 40/00, H01J 47/00, H01J 49/00)
 G01T

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. This sub-class deals with the measurement of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation, or neutron radiation.

 G01V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS (detecting or locating foreign bodies for diagnostic, surgical or person-identification purposes A61B; means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B 29/02; measuring chemical or physical properties of earth materials G01N; measuring electric or magnetic variables in general, other than direction or magnitude of the earth's field G01R; radar, sonar or analogous methods G01S 13/00, G01S 15/00, G01S 17/00)
 G01V

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. The geophysical methods of this sub-class apply both to the earth and to other celestial objects, e.g. planets.

 G01W
METEOROLOGY (influencing weather conditions A01G 15/00; dispersing fog E01H 13/00; instruments for measuring single variables in general, see the appropriate sub-class of class G01, e.g. G01K, G01L; obtaining meteorological information by radar G01S 13/95)
 G01W

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. In this sub-class, the term "meteorology" includes measurement of certain ambient atmospheric conditions.