IPC 7 English version G01C 19/00-G01C 25/00

IPC ⁷ English version

G01C - G01C 17/38

G01C01900-G01C02500

SECTION G – PHYSICS

G 01

MEASURING (counting G06M); TESTING

G 01 C

MEASURING 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/

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

19/

Rotary gyroscopes

19/

Details

19/

Rotors

19/

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

19/

Power supply

19/

fluid driven (G01C 19/14 takes precedence)

19/

Fluid rotors

19/

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

19/

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

19/

in fluid

19/

torsional

19/

using magnetic or electrostatic fields

19/

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

19/

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

19/

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

19/

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

19/

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

19/

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

19/

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

19/

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

19/

for indicating rate of turn; for integrating rate of turn

19/

for indicating the vertical

19/

Erection devices for restoring rotor axis to a desired position

19/

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

19/

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

19/

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

19/

with correction for acceleration forces due to movement of instrument

19/

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

19/

Turn-sensitive devices without moving masses [3]

19/

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

19/

with optical pumping [3]

19/

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

19/

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

19/

Lock-in prevention [5]

19/

by mechanical means [5]

19/

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

21/

Navigation; 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/

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/

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

21/

involving measuring of drift angle; involving correction for drift

21/

involving use of the magnetic field of the earth

21/

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

21/

executed aboard the object being navigated; Dead reckoning

21/

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

21/

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

21/

Stabilised platforms, e.g. by gyroscope

21/

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/

Plotting boards (in general B43L)

21/

specially adapted for cosmonautical navigation

21/

specially adapted for navigation in a road network [7]

21/

with correlation of data from several navigational instruments [7]

21/

Map- or contour-matching [7]

21/

Structuring or formatting of map data [7]

21/

Route searching; Route guidance [7]

21/

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

22/

Measuring 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/

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

23/

Combined 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/

Manufacturing, 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