CPC Definition - Subclass G01H
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.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Determining imbalance by oscillating the body to be tested and converting vibrations due to imbalance into electric variables | |
Vibration testing of structures | |
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 | |
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems | |
Sonar systems designed for mapping or imaging | |
Seismology; Seismic or acoustic prospecting or detecting | |
Manufacture of electromechanical resonators by processes which include measurement of frequency with consequential modification of the resonator |
Attention is drawn to the following places, which may be of interest for search:
Generating or transmitting mechanical vibrations in solids without measurement | |
Measuring distance, levels or bearings; Navigation; Gyroscopic instruments; Photogrammetry or videogrammetry | |
Measuring force or stress | |
Measuring pressure of a fluid or fluent solid material | |
Detecting knocks in internal-combustion engines | |
Testing dynamic balance of machines or structure, determining imbalance | |
Measuring acceleration, deceleration, shock | |
Acousto-optical devices | |
Obtaining records by techniques analogous to photography using ultrasonic, sonic or infrasonic waves | |
Musical instruments | |
Generating or transmitting mechanical vibrations in fluids without measurement | |
Arrangements for producing a reverberation or echo sound in fluids | |
Speech analysis or synthesis; Speech recognition | |
Information storage based on relative movement between record carrier and transducer | |
Piezoelectric, electro-strictive or magneto-strictive elements |
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.
This place does not cover:
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means | |
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties, | |
Transmitting measuring signals from a borehole to the surface by transmitting torsional acoustic waves through the drillstring or casing |
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.
This place covers:
- Measuring frequency.
- Measuring amplitude or power.
- Dosimeters.
This place does not cover:
Measuring reverberation time | |
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means | |
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties, | |
Devices for measuring rapid changes, such as oscillations, in the pressure of steam, gas, or liquid |
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.
This place does not cover:
Measuring temperature using measurement of the velocity of propagation of sound | |
Analysing fluids by measuring propagation velocity or propagation time of acoustic waves | |
Measuring speed of fluids, e.g. of an air-stream |
Attention is drawn to the following places, which may be of interest for search:
Measuring absorption of vibrations in a material | |
Arrangements for producing a reverberation or echo sound in fluids |
This place covers:
Measuring vibrations or sonic waves using electromagnetic waves, e.g. light.
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 | |
Measuring pressure of a fluid by acoustic means | |
Analysing materials using optoacoustic interaction with the material | |
Measuring acceleration, measuring shock by photoelectric pick-up | |
Electro-optic transducers |
This place covers:
Measuring by magnetic or electromagnetic means;
Measuring by electric means
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 | |
Burglar alarms actuated by variation in capacitance or inductance or a circuit | |
Structural combination of musical instruments with microphones or other pick-up devices |
This place does not cover:
Analysing fluids by measuring frequency or resonance of acoustic waves | |
Analysing solids by measuring frequency or resonance of acoustic waves |
Attention is drawn to the following places, which may be of interest for search:
Analysing fluids by measuring acoustic impedance |
This place covers:
Prediction of vibration patterns.
Chladni techniques.
This place does not cover:
Measuring characteristics of vibrations in solids by using direct conduction to the detector | |
Measuring characteristics of vibrations by using a detector in a fluid | |
Measuring propagation velocity of ultrasonic, sonic or infrasonic waves | |
Measuring reverberation time | |
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means | |
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties, | |
Measuring resonant frequency | |
Measuring mechanical or acoustic impedance |