G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 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.
 G01D 1/00
Indicating or recording apparatus giving results other than momentary value of variable, of general application (G01D 3/00 takes precedence; in tariff metering apparatus G01D 4/00; computing G06)
 G01D 1/02
·  giving mean values, e.g. root mean square values (measuring root mean square values of currents or voltages G01R 19/02)
 G01D 1/04
·  giving integrated values (giving mean values G01D 1/02)
 G01D 1/06
·  ·  by intermittent summation
 G01D 1/08
·  ·  ·  over fixed periods of time
 G01D 1/10
·  giving differentiated values
 G01D 1/12
·  giving a maximum or minimum of a value
 G01D 1/14
·  giving a distribution function of a value, i.e. number of times the value comes within specified ranges of amplitude
 G01D 1/16
·  giving a value which is a function of two or more values, e.g. product, ratio
 G01D 1/18
·  with arrangements for signalling that a predetermined value of an unspecified parameter has been exceeded (G01D 1/14 takes precedence; for a specified parameter, see the sub-class relevant to this parameter, e.g. level of a liquid exceeded G01F, temperature exceeded G01K)  [3]
 G01D 3/00
Indicating or recording apparatus with provision for the special purposes referred to in the sub-groups of this group
 G01D 3/02
·  with provision for altering or correcting the law of variation
 G01D 3/04
·  with provision for compensating the effects of disturbing variables, e.g. temperature, pressure
 G01D 3/06
·  with provision for operation by a null method
 G01D 3/08
·  with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
 G01D 3/10
·  with provision for switching-in of additional or auxiliary indicators or recorders
 G01D 4/00
Tariff metering apparatus (tariff meters for measuring the time integral of electric power or current G01R 11/56; in taximeters G07B 13/00; coin-freed mechanisms therefor G07F)
 G01D 4/02
·  Details
 G01D 4/04
·  ·  Resetting-mechanisms, e.g. for indicating members (for mechanical counters G06M 1/28)
 G01D 4/06
·  ·  Arrangement of clutches between driving and indicating member, e.g. of hysteresis clutch (G01D 4/04 takes precedence)
 G01D 4/08
·  ·  Transfer of indication from a counter into a summing counter (mechanical counters G06M)
 G01D 4/10
·  Maximum indicating or recording apparatus, i.e. where the tariff for a period is based on a maximum demand within that period
 G01D 4/12
·  ·  Apparatus for indicating or recording progressive maximum
 G01D 4/14
·  ·  Fixed-demand indicating or recording apparatus, i.e. where indication is made when a predetermined quantity has been consumed during a time interval greater or less than a predetermined time interval
 G01D 4/16
·  Apparatus for indicating or recording maximum or minimum load hours
 G01D 4/18
·  Apparatus for indicating or recording overconsumption with opposing torque which comes into effect when a predetermined level is exceeded, e.g. subtraction meters
 G01D 5/00
Mechanical means for transferring the output of a sensing member; Means for converting the output of the sensing member into a different 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 sub-classes, e.g. of G01, H01; specially adapted for high voltage or high current measuring arrangements G01R 15/02; transmission systems for measured values, control or similar signals G08C)
 G01D 5/00

Note(s)

The sub-groups below are distinguished by the means which is of major importance. Thus the mere application of other means for giving a final indication does not affect the classification.

 G01D 5/02
·  using mechanical means
 G01D 5/04
·  ·  using levers; using cams; using gearing (gearing in general F16)
 G01D 5/06
·  ·  acting through a wall or enclosure, e.g. by bellows, by magnetic coupling (in general F16)
 G01D 5/08
·  ·  Reducing the effects of friction, e.g. by applying vibrations
 G01D 5/10
·  ·  Applying external forces to increase force available for operation of indicating or recording part
 G01D 5/12
·  using electric or magnetic means (G01D 5/06 takes precedence)
 G01D 5/14
·  ·  influencing the magnitude of a current or voltage
 G01D 5/16
·  ·  ·  by varying resistance
 G01D 5/18
·  ·  ·  by varying effective impedance of discharge tubes or semiconductor devices
 G01D 5/20
·  ·  ·  by varying inductance, e.g. by a movable armature
 G01D 5/22
·  ·  ·  ·  differentially influencing two coils
 G01D 5/24
·  ·  ·  by varying capacitance
 G01D 5/242
·  ·  ·  by varying output of an electrodynamic device, e.g. of a tachodynamo
 G01D 5/243
·  ·  influencing the phase or frequency of ac
 G01D 5/244
·  ·  influencing characteristics of pulses or pulse trains
 G01D 5/245
·  ·  ·  using a variable number of pulses in a train
 G01D 5/246
·  ·  ·  by varying the duration of individual pulses
 G01D 5/247
·  ·  ·  using time shifts of pulses
 G01D 5/248
·  ·  ·  by varying pulse repetition frequency
 G01D 5/249
·  ·  ·  using pulse code
 G01D 5/25
·  ·  Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
 G01D 5/251
·  ·  ·  one conductor or channel
 G01D 5/252
·  ·  ·  a combination of conductors or channels
 G01D 5/26
·  using optical means, i.e. using infra-red, visible or ultra-violet light
 G01D 5/28
·  ·  with beams of light deflected by the sensing element, e.g. for direct optical indication (G01D 5/40 takes precedence)
 G01D 5/30
·  ·  ·  and detected by photocells
 G01D 5/32
·  ·  with beams of light wholly or partly obturated by sensing element (G01D 5/40 takes precedence)
 G01D 5/34
·  ·  ·  and detected by photocells
 G01D 5/36
·  ·  ·  ·  Forming the light into pulses
 G01D 5/38
·  ·  ·  ·  ·  by diffraction gratings
 G01D 5/39
·  ·  Scanning a visible indication of the measured value and reproducing this indication at a remote place, e.g. on the screen of a cathode-ray tube
 G01D 5/40
·  ·  specially adapted for use with infra-red light
 G01D 5/42
·  using fluid means
 G01D 5/44
·  ·  using jets of fluid
 G01D 5/46
·  ·  ·  by deflecting or throttling the flow
 G01D 5/48
·  using wave or particle radiation means (G01D 5/26 takes precedence)
 G01D 5/50
·  ·  derived from a radioactive source
 G01D 5/52
·  ·  ·  detected by a counter tube
 G01D 5/54
·  using means specified in two or more of sub-groups G01D 5/02, G01D 5/12, G01D 5/26, G01D 5/42, and G01D 5/48
 G01D 5/54

Note(s)

  1. Inventions are only classified in this group if no other group can be selected as being predominantly applicable.
  2. For a combination of two or more of the means specified, the first applicable one of the sub-groups below takes precedence over any others of these sub-groups.
 G01D 5/56
·  ·  using electric or magnetic means
 G01D 5/58
·  ·  using optical means, i.e. using infra-red, visible or ultra-violet light
 G01D 5/60
·  ·  using fluid means
 G01D 5/62
·  ·  using wave or particle radiation means not covered by group G01D 5/58
 G01D 7/00
Indicating measured values
 G01D 7/02
·  Indicating value of two or more variables simultaneously
 G01D 7/04
·  ·  using a separate indicating element for each variable
 G01D 7/06
·  ·  ·  Luminous indications projected on a common screen
 G01D 7/08
·  ·  using a common indicating element for two or more variables
 G01D 7/10
·  ·  ·  giving indication in co-ordinate form
 G01D 7/12
·  Audible indication of meter readings, e.g. for the blind  [2]
 G01D 9/00
Recording measured values
 G01D 9/02
·  Producing one or more recordings of the values of a single variable
 G01D 9/04
·  ·  with provision for multiple or alternative recording
 G01D 9/06
·  ·  ·  Multiple recording, e.g. duplicating
 G01D 9/08
·  ·  ·  ·  giving both graphical and numerical recording
 G01D 9/10
·  ·  the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time
 G01D 9/12
·  ·  ·  recording occurring continuously
 G01D 9/14
·  ·  ·  ·  with provision for altering speed of recording medium in accordance with the magnitude of the variable to be recorded
 G01D 9/16
·  ·  ·  recording occurring at separated intervals, e.g. by chopper bar
 G01D 9/18
·  ·  ·  ·  recording element actuated only upon change in value of variable
 G01D 9/20
·  ·  the recording element, e.g. stylus, being controlled in accordance with time and the recording medium, e.g. paper roll, being controlled in accordance with the variable
 G01D 9/22
·  ·  ·  recording occurring continuously
 G01D 9/24
·  ·  ·  recording occurring at separated intervals, e.g. by chopper bar
 G01D 9/26
·  ·  either the recording element, e.g. stylus, or the recording medium, e.g. paper roll, being controlled in accordance with both time and the variable
 G01D 9/28
·  Producing one or more recordings, each recording being of the values of two or more different variables (G01D 9/38, G01D 9/40 take precedence)
 G01D 9/30
·  ·  there being a separate recording element for each variable, e.g. multiple-pen recorder
 G01D 9/32
·  ·  there being a common recording element for two or more variables
 G01D 9/34
·  ·  ·  the variables being recorded in predetermined sequence
 G01D 9/36
·  ·  ·  ·  in separate columns
 G01D 9/38
·  Producing one or more recordings, each recording being produced by controlling the recording element, e.g. stylus, in accordance with one variable and controlling the recording medium, e.g. paper roll, in accordance with another variable
 G01D 9/40
·  Producing one or more recordings, each recording being produced by controlling either the recording element, e.g. stylus, or the recording medium, e.g. paper roll, in accordance with two or more variables
 G01D 9/42
·  Recording indications of measuring instruments by photographic means, e.g. of counters
 G01D 11/00
Component parts of indicating or recording apparatus, of general application (G01D 13/00, G01D 15/00 take precedence)
 G01D 11/02
·  Bearings or suspensions for moving parts (bearings in general F16C)
 G01D 11/04
·  ·  Knive-edge bearings
 G01D 11/06
·  ·  Strip or thread suspensions, e.g. in tension
 G01D 11/08
·  Elements for balancing moving parts
 G01D 11/10
·  Elements for damping the movement of parts
 G01D 11/12
·  ·  using fluid damping
 G01D 11/14
·  ·  using magnetic induction damping
 G01D 11/16
·  Elements for restraining or preventing the movement of parts, e.g. for zeroising (caging of moving parts when not in use G01D 11/20)
 G01D 11/18
·  ·  Springs (G01D 11/06 takes precedence)
 G01D 11/20
·  Caging devices for moving parts when not in use
 G01D 11/22
·  ·  automatically actuated
 G01D 11/24
·  Housings
 G01D 11/26
·  ·  Windows; Cover glasses; Sealings therefor
 G01D 11/28
·  Structurally-combined illuminating devices
 G01D 11/30
·  Supports specially adapted for an instrument; Supports specially adapted for a set of instruments (in general F16M; specially adapted for aircraft or vehicles, see the relevant sub-classes)
 G01D 13/00
Component parts of indicating or recording apparatus, of general application for indication
 G01D 13/02
·  Scales; Dials
 G01D 13/04
·  ·  Construction
 G01D 13/06
·  ·  ·  Moving bands (G01D 13/10 takes precedence)
 G01D 13/08
·  ·  ·  Rotating drums (G01D 13/10 takes precedence)
 G01D 13/10
·  ·  ·  with adjustable scales; with auxiliary scales, e.g. vernier
 G01D 13/12
·  ·  Graduation
 G01D 13/14
·  ·  ·  for rotations of more than 360°
 G01D 13/16
·  ·  ·  with staggered markings
 G01D 13/18
·  ·  ·  with raised or recessed markings
 G01D 13/20
·  ·  ·  with luminescent markings
 G01D 13/22
·  Pointers, e.g. settable pointer
 G01D 13/24
·  ·  for indicating a maximum or minimum
 G01D 13/26
·  ·  adapted to perform a further operation, e.g. making electrical contact
 G01D 13/28
·  ·  with luminescent markings
 G01D 15/00
Component parts of indicating or recording apparatus, of general application for recording
 G01D 15/02
·  Styli or other recording elements acting to mechanically deform or perforate the recording surface (printing recording elements G01D 15/20)
 G01D 15/04
·  ·  acting to punch holes in the recording surface
 G01D 15/06
·  Electric recording elements, e.g. electrolytic
 G01D 15/08
·  ·  for spark erosion
 G01D 15/10
·  Heated recording elements acting on heat-sensitive layers
 G01D 15/12
·  Magnetic recording elements
 G01D 15/14
·  Optical recording elements; Recording elements using X- or nuclear radiation
 G01D 15/16
·  Recording elements transferring recording material, e.g. ink, to the recording surface (printing recording elements G01D 15/20; writing appliances in general B43K)
 G01D 15/18
·  ·  Nozzles emitting recording material
 G01D 15/20
·  Recording elements for printing with ink or for printing by deformation or perforation of the recording surface, e.g. embossing
 G01D 15/22
·  Chopper bars for bringing recording element into contact with recording surface
 G01D 15/24
·  Drives for recording elements or surfaces, not covered by group G01D 5/00
 G01D 15/26
·  ·  operating by clockwork (clockworks per se G04B, G04C)
 G01D 15/28
·  Holding means for recording surfaces; Guiding means for recording surfaces; Exchanging means for recording surfaces
 G01D 15/30
·  ·  for foldable strip charts
 G01D 15/32
·  ·  for circular charts
 G01D 15/34
·  Recording surfaces
 G01D 18/00
Testing or calibrating of indicating or recording apparatus
 G01D 21/00
Measuring or testing not otherwise provided for
 G01D 21/02
·  Measuring two or more variables by means not covered by a single other sub-class
 G01D 21/04
( transferred to G01V )