CPC Definition - Subclass G01H

Last Updated Version: 2017.08
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES (generation of mechanical vibrations without measurement B06B, G10K; measuring position, direction or velocity of an object G01C, G01S; measuring quasi-steady pressure of a fluid G01L 7/00; determining unbalance G01M 1/14; determining properties of material by sonic or ultrasonic waves transmitted therethrough G01N; systems using the reflection or reradiation of acoustic waves, e.g. acoustic imaging, G01S 15/00; seismology, seismic prospecting, acoustic prospecting G01V 1/00; acousto-optical devices per se G02F; obtaining records by techniques analogous to photography using ultrasonic, sonic or infrasonic waves G03B 42/06; speech analysis or synthesis, speech recognition G10L; information storage based on relative movement between record carrier and transducer G11B; piezo-electric, electrostrictive or magnetostrictive elements in general H01L; manufacture of electromechanical resonators by processes which include measurement of frequency with consequential modification of the resonator H03H 3/00, {H03H 3/007, H03H 9/00})
Definition statement

This place covers:

Apparatus or methods for the measurement, or measurement in combination with generation, of mechanical vibrations or the like, and particularly for the measurement of:

  • mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means;
  • mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties;
  • mechanical vibrations or ultrasonic, sonic or infrasonic waves by other means;
  • vibrations in solids by using direct conduction to the detector;
  • vibrations in fluids by using a detector in a fluid;
  • propagation velocity of ultrasonic, sonic or infrasonic waves;
  • reverberation time;
  • resonant frequency;
  • mechanical or acoustic impedance.
References
Limiting references

This place does not cover:

Measuring force or stress

G01L 1/00

Detecting knocks in internal-combustion engines

G01L 23/22

Testing dynamic balance of machines or structure, determining unbalance

G01M 1/14

Determining unbalance by oscillating the body to be tested and converting vibrations due to unbalance into electric variables

G01M 1/22

Vibration testing of structures

G01M 7/02

Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object

G01N 29/00

Measuring acceleration, deceleration, shock

G01P 15/00

Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems

G01S 15/00

Sonar systems designed for mapping or imaging

G01S 15/89

Seismology; Seismic or acoustic prospecting or detecting

G01V 1/00

Manufacture of electromechanical resonators by processes which include measurement of frequency with consequential modification of the resonator

H03H 3/007

Informative references

Attention is drawn to the following places, which may be of interest for search:

Generating or transmitting mechanical vibrations in solids without measurement

B06B

Measuring distance, levels or bearings; Navigation; Gyroscopic instruments; Photogrammetry or videogrammetry

G01C

Measuring pressure of a fluid or fluent solid material

G01L 7/00- G01L 19/00

Acousto-optical devices

G02F 1/11, G02F 1/33

Obtaining records by techniques analogous to photography using ultrasonic, sonic or infrasonic waves

G03B 42/06

Musical instruments

G10B- G10H

Generating or transmitting mechanical vibrations in fluids without measurement

G10K

Arrangements for producing a reverberation or echo sound in fluids

G10K 15/08

Speech analysis or synthesis; Speech recognition

G10L

Information storage based on relative movement between record carrier and transducer

G11B

Piezo-electric, electro-strictive or magneto-strictive elements

H01L 41/00

Measuring {characteristics of} vibrations in solids by using direct conduction to the detector (G01H 9/00, G01H 11/00 take precedence)
Definition statement

This place covers:

Measuring characteristics of vibrations of rotating machines, using direct contact of the transducer, microphones, or optical detectors.

Measuring characteristics of vibrations of the rotor of turbo machines, using direct contact of the transducer, microphones, or optical detectors.

References
Limiting references

This place does not cover:

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

G01H 9/00

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties,

G01H 11/00

Transmitting measuring signals from a borehole to the surface by transmitting torsional acoustic waves through the drillstring or casing

E21B 47/16

Special rules of classification

Except for G01H 1/10 (torsional vibrations), groups G01H 1/04 - G01H 1/16 are not currently used for the classification of new documents. Since no distinction with regard to transverse, torsional or longitudinal vibrations has been made while classifying documents, the subject matter which is presumably covered by these groups is effectively classified in G01H 1/00.

Measuring {characteristics of} vibrations by using a detector in a fluid (G01H 7/00, G01H 9/00, G01H 11/00 take precedence)
Definition statement

This place covers:

  • Measuring frequency.
  • Measuring amplitude or power.
  • Dosimeters.
References
Limiting references

This place does not cover:

Measuring reverberation time

G01H 7/00

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

G01H 9/00

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties,

G01H 11/00

Devices for measuring rapid changes, such as oscillations, in the pressure of steam, gas, or liquid

G01L 23/00

{Testing or calibrating of detectors covered by the subgroups of G01H 3/00 (calibrating geophysical instruments, e.g. seismic receivers G01V 13/00)}
Relationships with other classification places

G01V 13/00 covers the calibration of devices covered by the groups G01V 1/00, G01V 3/00, G01V 7/00, G01V 9/00 and G01V 11/00, i.e. prospecting or detecting using acoustic, seismic, electric, magnetic, gravitational, or optical means.

Measuring propagation velocity of ultrasonic, sonic or infrasonic waves{, e.g. of pressure waves}
References
Limiting references

This place does not cover:

Measuring temperature using measurement of the velocity of propagation of sound

G01K 11/24

Analysing fluids by measuring propagation velocity or propagation time of acoustic waves

G01N 29/024

Measuring speed of fluids, e.g. of an air-stream

G01P 5/00

Measuring reverberation time; {Room acoustic measurements} (measuring absorption of vibrations in a material G01N; modifying acoustic properties to change reverberation time G10K)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring absorption of vibrations in a material

G01N

Arrangements for producing a reverberation or echo sound in fluids

G10K 15/08

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
Definition statement

This place covers:

Measuring vibrations or sonic waves using electromagnetic waves, e.g. light.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring force or stress by measuring variations in optical properties of a material when it is stressed

G01L 1/24

Measuring pressure of a fluid by acoustic means

G01L 11/04

Analysing materials using optoacoustic interaction with the material

G01N 29/24

Measuring acceleration, measuring shock by photoelectric pick-up

G01P 15/093

Electro-optic transducers

H04R 23/00

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties{, e.g. capacitance or reluctance (structural combination of musical instruments with microphones or other pick-up devices G10H 3/16, G10H 3/18, G10H 3/20)}
Definition statement

This place covers:

Measuring by magnetic or electromagnetic means;

Measuring by electric means

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring acceleration, deceleration shock with conversion into electric or magnetic variables

G01P 15/08

Burglar alarms actuated by variation in capacitance or inductance or a circuit

G08B 13/26

Structural combination of musical instruments with microphones or other pick-up devices

G10H 3/16, G10H 3/18, G10H 3/20

Measuring resonant frequency
References
Limiting references

This place does not cover:

Analysing fluids by measuring frequency or resonance of acoustic waves

G01N 29/036

Analysing solids by measuring frequency or resonance of acoustic waves

G01N 29/12

Measuring mechanical or acoustic impedance
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Analysing fluids by measuring acoustic impedance

G01N 29/028

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups {(see provisionally also G01H 1/00)}
Definition statement

This place covers:

Prediction of vibration patterns.

Chladni techniques.

References
Limiting references

This place does not cover:

Measuring characteristics of vibrations in solids by using direct conduction to the detector

G01H 1/00

Measuring characteristics of vibrations by using a detector in a fluid

G01H 3/00

Measuring propagation velocity of ultrasonic, sonic or infrasonic waves

G01H 5/00

Measuring reverberation time

G01H 7/00

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

G01H 9/00

Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties,

G01H 11/00

Measuring resonant frequency

G01H 13/00

Measuring mechanical or acoustic impedance

G01H 15/00