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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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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
}
)
NOTE
-
This subclass covers the combination of generation and measurement of mechanical vibrations.

Attention is drawn to the Notes following the title of class G01.


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Measuring
{
characteristics of
}
vibrations in solids by using direct conduction to the detector (G01H 9/00, G01H 11/00 take precedence)
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G01H 1/003
.
{
of rotating machines (G01H 1/10 takes precedence)
}
G01H 1/006
. .
{
of the rotor of turbo machines
}
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G01H 1/04
.
of vibrations which are transverse to direction of propagation
G01H 1/06
. .
Frequency
G01H 1/08
. .
Amplitude
G01H 1/10
.
of torsional vibrations
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G01H 1/12
.
of longitudinal or not specified vibrations
G01H 1/14
. .
Frequency
G01H 1/16
. .
Amplitude
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Measuring
{
characteristics of
}
vibrations by using a detector in a fluid (G01H 7/00, G01H 9/00, G01H 11/00 take precedence)
.
{
Testing or calibrating of detectors covered by the subgroups of G01H 3/00(calibrating geophysical instruments, e.g. seismic receivers G01V 13/00)
}
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G01H 3/04
.
Frequency
G01H 3/06
. .
by electric means
G01H 3/08
. .
Analysing frequencies present in complex vibrations, e.g. comparing harmonics present
{
(acoustic presence detection G01V 1/001)
}
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G01H 3/10
.
Amplitude; Power
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G01H 3/12
. .
by electric means (G01H 3/14 takes precedence)
G01H 3/125
. . .
{
for representing acoustic field distribution (using optical means G01H 9/002; sonar systems for imaging G01S 7/56, G01S 15/89; acoustic holography G03H 3/00)
}
G01H 3/14
. .
Measuring mean amplitude; Measuring mean power; Measuring time integral of power
Measuring propagation velocity of ultrasonic, sonic or infrasonic waves,
{
e.g. of pressure waves
}
Measuring reverberation time;
{
Room acoustic measurements
}
(measuring absorption of vibrations in a material G01N; modifying acoustic properties to change reverberation time G10K)
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Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G01H 9/002
.
{
for representing acoustic field distribution (sonar systems for imaging G01S 7/56, G01S 15/89; acoustic holography G03H 3/00)
}
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G01H 9/004
.
{
using fibre optic sensors (light guides per se G02B 6/00, acousto-optical devices specially adapted for gating or modulating in optical wave guides G02F 1/125)
}
G01H 9/006
. .
{
the vibrations causing a variation in the relative position of the end of a fibre and another element
}
G01H 9/008
.
{
by using ultrasonic waves (measuring position using ultrasonic waves G01S 15/02)
}
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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)
}
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G01H 11/02
.
by magnetic means e.g. reluctance
G01H 11/04
. .
using magnetostrictive devices
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G01H 11/06
.
by electric means
G01H 11/08
. .
using piezo-electric devices
Measuring resonant frequency
Measuring mechanical or acoustic impedance
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
{
see provisionally also G01H 1/00
}
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Last Modified: 10/10/2013