in which the sound-producing member is rotated manually or by a motor (G 10 K 7/06 takes precedence)
7
/
04
•
•
by an electric motor
7
/
06
•
in which the sound-producing member is driven by a fluid, e.g. by a compressed gas
9
/
00
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horn, vehicle hooter, buzzer (loudspeakers or like acoustic electromechanical transducers H 04 R)
9
/
02
•
driven by gas, e.g. suction operated
9
/
04
•
•
by compressed gases, e.g. compressed air
9
/
06
•
•
produced by detonation
9
/
08
•
driven by water or other liquids
9
/
10
•
driven by mechanical means only
9
/
12
•
electrically operated
Note
This group does not cover the construction of, or circuits for, broadband-transducers such as loudspeakers or microphones, which are covered by subclass H 04 R. [6]
9
/
122
•
•
using piezo-electric driving means [6]
9
/
125
•
•
•
with a plurality of active elements [6]
9
/
128
•
•
using magnetostrictive driving means [6]
9
/
13
•
•
using electromagnetic driving means [3]
9
/
15
•
•
•
Self-interrupting arrangements [3]
9
/
16
•
•
with means for generating the current by muscle power
9
/
18
•
Details, e.g. bulb, pump, piston, switch, casing
9
/
20
•
•
Sounding members
9
/
22
•
•
Mountings; Casings
11
/
00
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (sound insulation for vehicles B 60 R 13/08; sound insulation for aircraft B 64 C 1/40; sound insulating materials, see the relevant places, e.g. C 04 B 26/00 to
C 04 B 38/00; reduction of noise on permanent way E 01 B 19/00; absorption of air-transmitted noise from road or railway traffic E 01 F 8/00; noise insulation, absorption or reflection in buildings E 04 B 1/74; room acoustics E 04 B 1/99; sound insulation in floors E 04 F 15/20; gas-flow silencers or exhaust apparatus for machines or engines in general, for internal-combustion engines F 01 N; intake silencers for internal-combustion engines
F 02 M 35/00; suppression of undesired vibrations F 16 F 7/00 to F 16 F 15/00; preventing noise in valves F 16 K 47/02; noise absorbers in pipes F 16 L 55/02; arrangements for suppressing noise in direct-contact trickle coolers F 28 C 1/10; silencers for weapons F 41)
11
/
02
•
Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators [3]
11
/
04
•
•
Acoustic filters [3]
11
/
08
•
Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G 10 K 11/02; amplifying by focusing G 10 K 11/26)
11
/
16
•
Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound (G 10 K 11/36 takes precedence) [3]
Note
This group does not cover protecting against, or damping of, acoustic waves adapted for particular applications, which are covered by the subclasses for these applications, provided that there is a specific provision for this aspect. [6]
11
/
162
•
•
Selection of materials [6]
11
/
165
•
•
•
Particles in a matrix [6]
11
/
168
•
•
•
Plural layers of different materials, e.g. sandwiches [6]
Note
When classifying in this group, classification is also made in subclass
B 32 B, in so far as any layered product is concerned. [6]
11
/
172
•
•
using resonance effects [6]
11
/
175
•
•
using interference effects; Masking sound [6]
11
/
178
•
•
•
by electro-acoustically regenerating the original acoustic waves in anti-phase [6]
11
/
18
•
Methods or devices for transmitting, conducting or directing sound (G 10 K 11/02, G 10 K 11/36 take precedence; medical stethoscopes A 61 B 7/02) [3]
11
/
20
•
•
Reflecting arrangements (G 10 K 11/28 takes precedence) [3]
11
/
22
•
•
for conducting sound through hollow pipes, e.g. speaking tubes [3]
11
/
24
•
•
for conducting sound through solid bodies, e.g. wire [3]
11
/
26
•
•
Sound-focusing or directing, e.g. scanning [3]
11
/
28
•
•
•
using reflection, e.g. parabolic reflector [3]
11
/
30
•
•
•
using refraction, e.g. acoustic lenses [3]
11
/
32
•
•
•
characterised by shape of the source [3]
11
/
34
•
•
•
using electrical steering of transducer arrays, e.g. beam steering [3]
11
/
35
•
•
•
using mechanical steering of transducers [6]
11
/
36
•
Devices for manipulating acoustic surface waves (electro-acoustic amplifiers
H 03 F 13/00; networks comprising electro-acoustic elements H 03 H 9/00) [3]
13
/
00
Cones, diaphragms, or the like, for emitting or receiving sound in general (for electromechanical transducers H 04 R 7/00)
15
/
00
Acoustics not otherwise provided for [4]
15
/
02
•
Synthesis of acoustic waves (synthesis of speech G 10 L) [4]
15
/
04
•
Sound-producing devices (G 10 K 15/02 takes precedence) [4]
15
/
06
•
•
using electric discharge [4]
15
/
08
•
Arrangements for producing a reverberation or echo sound [5]
15
/
10
•
•
using time-delay networks comprising electromechanical or electro-acoustic devices [5]
