G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 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, 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).

 G01P 1/00
Details of instruments
 G01P 1/02
·  Housings
 G01P 1/04
·  Special adaptations of driving means
 G01P 1/06
·  Indicating or recording devices, e.g. for remote indication (indicating or recording in general G01D; registering or indicating working conditions of vehicles G07C 5/00)
 G01P 1/08
·  ·  Arrangements of scales, pointers, lamps, or acoustic indicators, e.g. in automobile speedometers
 G01P 1/10
·  ·  ·  for indicating predetermined speeds
 G01P 3/00
Measuring linear and angular speed; Measuring differences of linear and angular speeds (G01P 5/00-G01P 11/00 take precedence; counting mechanisms G06M)
 G01P 3/00

Note(s)

The sub-groups of this group are distinguished by the method of measurement which is of major importance. Thus the mere application of other methods for giving a final indication does not affect the classification.

 G01P 3/02
·  Devices characterised by the use of mechanical means
 G01P 3/04
·  ·  by comparing two speeds
 G01P 3/06
·  ·  ·  using a friction gear
 G01P 3/08
·  ·  ·  using differential gearing
 G01P 3/10
·  ·  by actuating an indicating element, e.g. pointer, for a fixed time (maximum demand indication G01D)
 G01P 3/12
·  ·  by making use of a system excited by impact
 G01P 3/14
·  ·  by exciting one or more mechanical resonance systems
 G01P 3/16
·  ·  by using centrifugal forces of solid masses (governors G05D 13/00)
 G01P 3/18
·  ·  ·  transferred to the indicator by mechanical means
 G01P 3/20
·  ·  ·  transferred to the indicator by fluid means
 G01P 3/22
·  ·  ·  transferred to the indicator by electric or magnetic means
 G01P 3/24
·  ·  by using friction effects (G01P 3/06 takes precedence)
 G01P 3/26
·  Devices characterised by the use of fluids
 G01P 3/28
·  ·  by using pumps
 G01P 3/30
·  ·  by using centrifugal forces of fluids
 G01P 3/32
·  ·  ·  in a rotary container communicating with a fixed container
 G01P 3/34
·  ·  by using friction effects
 G01P 3/36
·  Devices characterised by the use of optical means, e.g. using infra-red, visible, or ultra-violet light (G01P 3/68 takes precedence)
 G01P 3/38
·  ·  using photographic means
 G01P 3/40
·  ·  using stroboscopic means
 G01P 3/42
·  Devices characterised by the use of electric or magnetic means (G01P 3/66 takes precedence; measuring electric or magnetic values in general G01R)
 G01P 3/44
·  ·  for measuring angular speed (G01P 3/56 takes precedence)
 G01P 3/46
·  ·  ·  by measuring amplitude of generated current or voltage
 G01P 3/48
·  ·  ·  by measuring frequency of generated current or voltage
 G01P 3/49
·  ·  ·  using eddy currents
 G01P 3/50
·  ·  for measuring linear speed (G01P 3/56 takes precedence)
 G01P 3/52
·  ·  ·  by measuring amplitude of generated current or voltage
 G01P 3/54
·  ·  ·  by measuring frequency of generated current or voltage
 G01P 3/56
·  ·  for comparing two speeds
 G01P 3/58
·  ·  ·  by measuring or comparing amplitudes of generated currents or voltages
 G01P 3/60
·  ·  ·  by measuring or comparing frequency of generated currents or voltages
 G01P 3/62
·  Devices characterised by the determination of the variation of atmospheric pressure with height to measure the vertical components of speed (measuring pressure in general G01L)
 G01P 3/64
·  Devices characterised by the determination of the time taken to traverse a fixed distance
 G01P 3/66
·  ·  using electric or magnetic means (measuring short time intervals G04F 9/00, G04F 11/00)
 G01P 3/68
·  ·  using optical means, i.e. using infra-red, visible, or ultra-violet light (by reflection of waves G01S 9/62)
 G01P 3/70
·  Devices characterised by the combination of measuring means specified in two or more of sub-groups G01P 3/02, G01P 3/26, G01P 3/36, G01P 3/42 and G01P 3/62
 G01P 3/70

Note(s)

  1. Inventions are only to be classified in this group if no other single group can be selected as being predominantly applicable.
  2. In classifying a combination of two or more of the techniques specified, the first applicable one of the sub-groups below takes precedence over any others of these sub-groups.
 G01P 3/72
·  ·  using fluid means
 G01P 3/74
·  ·  using optical means, i.e. using infra-red, visible, or ultra-violet light
 G01P 3/76
·  ·  using electric or magnetic means
 G01P 3/78
·  ·  using the variation of atmospheric pressure with height to measure the vertical component of speed
 G01P 5/00
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft (application of speed-measuring devices for measuring volume of fluids G01F)
 G01P 5/02
·  by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
 G01P 5/04
·  ·  using deflection of baffle-plates
 G01P 5/06
·  ·  using rotation of vanes (measuring speed of rotating shafts G01P 3/00)
 G01P 5/08
·  by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
 G01P 5/10
·  by measuring thermal variables
 G01P 5/12
·  ·  using variation of resistance of a heated conductor
 G01P 5/14
·  by measuring differences of pressure in the fluid
 G01P 5/16
·  ·  using Pitot tubes, e.g. Machmeter
 G01P 5/18
·  by measuring the time taken to traverse a fixed distance
 G01P 5/20
·  ·  using particles entrained by a fluid stream
 G01P 7/00
Measuring speed by integrating acceleration (measuring travelled distance by double integration of acceleration G01C 21/16)
 G01P 9/00
Measuring speed by using gyroscopic effect, e.g. using gas, using electron beam (gyroscopes or turn-sensitive devices per se G01C 19/00)
 G01P 9/02
·  using rotary gyroscopes
 G01P 9/04
·  using turn-sensitive devices with vibrating masses, e.g. tuning-fork
 G01P 11/00
Measuring average value of speed (by determining time taken to traverse a fixed distance G01P 3/64, G01P 5/18)
 G01P 11/02
·  Measuring average speed of a number of bodies, e.g. of vehicles for traffic control
 G01P 13/00
Indicating or recording presence, absence, or direction, of movement (counting moving objects G06M 7/00; electric switches H01H)
 G01P 13/02
·  Indicating direction only, e.g. by weather vane
 G01P 15/00
Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
 G01P 15/02
·  by making use of inertia forces (G01P 15/14 takes precedence)
 G01P 15/04
·  ·  for indicating maximum value
 G01P 15/06
·  ·  ·  using members subjected to a permanent deformation
 G01P 15/08
·  ·  with conversion into electric or magnetic values
 G01P 15/10
·  ·  ·  by vibratory strings
 G01P 15/12
·  ·  ·  by alteration of electrical resistance
 G01P 15/14
·  by making use of gyroscopes (gyroscopes per se G01C 19/00)
 G01P 21/00
Functional testing or calibrating of apparatus or devices covered by the preceding groups
 G01P 21/02
·  of speedometers