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IPC 7
  G01C - G01C 17/38  
G01C01900-G01C02500
 

SECTION G – PHYSICS


G 01MEASURING (counting G06M); TESTING


G 01 CMEASURING DISTANCES, LEVELS, OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY (measuring dimensions or angles of objects G01B; measuring liquid level G01F; measuring intensity or direction of magnetic fields, other than the earth's field, in general G01R; 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; optical systems therefor G02B; maps, globes G09B)


19/

00Gyroscopes; Turn-sensitive devices with vibrating masses; Turn-sensitive devices without moving masses

19/

02.Rotary gyroscopes

19/

04..Details

19/

06...Rotors

19/

08....electrically driven (G01C 19/14 takes precedence; dynamo-electric machines H02K)

19/

10.....Power supply

19/

12....fluid driven (G01C 19/14 takes precedence)

19/

14....Fluid rotors

19/

16...Suspensions; Bearings (bearings in general F16C; balancing rotors G01M)

19/

18....providing movement of rotor with respect to its rotational axes (G01C 19/20, G01C 19/24 take precedence)

19/

20....in fluid

19/

22....torsional

19/

24....using magnetic or electrostatic fields

19/

26...Caging, i.e. immobilising moving parts, e.g. for transport (applicable to instruments in general G01D 11/20)

19/

28...Pick-offs, i.e. devices for taking off an indication of the displacement of the rotor axis

19/

30...Erection devices, i.e. devices for restoring rotor axis to a desired position (for instrument indicating the vertical G01C 19/46)

19/

32...Indicating or recording means specially adapted for rotary gyroscopes (in general G01D)

19/

34..for indicating a direction in the horizontal plane, e.g. directional gyroscopes

19/

36...with north-seeking action by magnetic means, e.g. gyromagnetic compasses

19/

38...with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation

19/

40..for control by signals from a master compass, i.e. repeater compasses

19/

42..for indicating rate of turn; for integrating rate of turn

19/

44..for indicating the vertical

19/

46...Erection devices for restoring rotor axis to a desired position

19/

48....operating by electrical means (G01C 19/54 takes precedence)

19/

50....operating by mechanical means (G01C 19/54 takes precedence)

19/

52....operating by fluid means (G01C 19/54 takes precedence)

19/

54....with correction for acceleration forces due to movement of instrument

19/

56.Turn-sensitive devices with vibrating masses, e.g. tuning fork

19/

58.Turn-sensitive devices without moving masses  [3]

19/

60..Electronic or nuclear magnetic resonance gyrometers (magnetic resonance arrangements in general G01R 33/20)  [3,4]

19/

62...with optical pumping  [3]

19/

64..Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams  [3]

19/

66...Ring laser gyrometers (ring lasers in general H01S 3/083)  [5]

19/

68....Lock-in prevention  [5]

19/

70.....by mechanical means  [5]

19/

72...with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers  [5]


21/

00Navigation; Navigational instruments not provided for in preceding groups (measuring distance traversed on the ground by a vehicle G01C 22/00; measuring linear or angular speed or acceleration G01P; control of position, course, altitude or attitude of vehicles G05D 1/00; traffic control systems G08G)

21/

02.by astronomical means (G01C 21/24, G01C 21/26 take precedence; measuring time by using position of the sun, moon, or stars G04B 49/00) [1,7]

21/

04.by terrestrial means (G01C 21/24, G01C 21/26 take precedence; marking of navigation route for ships B63B 51/00) [1,7]

21/

06..involving measuring of drift angle; involving correction for drift

21/

08..involving use of the magnetic field of the earth

21/

10.by using measurement of speed or acceleration (G01C 21/24, G01C 21/26 take precedence) [1,7]

21/

12..executed aboard the object being navigated; Dead reckoning

21/

14...by recording the course traversed by the object (G01C 21/16 takes precedence)

21/

16...by integrating acceleration or speed, i.e. inertial navigation

21/

18....Stabilised platforms, e.g. by gyroscope

21/

20.Instruments for performing navigational calculations (G01C 21/24, G01C 21/26 take precedence; adaptations of digital computers to a specific function or application G06F 17/00, G06F 19/00) [1,7]

21/

22..Plotting boards (in general B43L)

21/

24.specially adapted for cosmonautical navigation

21/

26.specially adapted for navigation in a road network [7]

 

21/

28..with correlation of data from several navigational instruments [7]

 

21/

30...Map- or contour-matching [7]

 

21/

32....Structuring or formatting of map data [7]

 

21/

34..Route searching; Route guidance [7]

 

21/

36...Input/output arrangements for on-board computers [7]

 


22/

00Measuring distance traversed on the ground by vehicles, persons, animals, or other moving solid bodies, e.g. using odometers, using pedometers (counting mechanisms per se G06M)

22/

02.by conversion into electric waveforms and subsequent integration, e.g. using tachometer generator


23/

00Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed, acceleration


25/

00Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the preceding groups (testing, calibrating, or compensating compasses G01C 17/38)


  G01C - G01C 17/38   
 

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