| Patents for G10K 9 - Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers (3,562) |
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| 09/28/1982 | US4352169 Electronic timepiece |
| 09/28/1982 | US4352039 Sonic transducer |
| 08/31/1982 | US4347500 Electric alarm device |
| 08/17/1982 | US4345118 Quartz tuning fork electro-acoustic transducer |
| 06/16/1982 | EP0053947A1 Ultrasonic transducer |
| 06/08/1982 | US4334211 Speaker grille for streamlined light bar mounted on vehicle roof |
| 06/02/1982 | EP0052975A1 Horn body and horn having such a horn body |
| 06/01/1982 | CA1124560A1 Eletromagnetic acoustic transducer with its air gap established at assembly by counteracting springs |
| 05/25/1982 | US4332017 Mechanoacoustic transducer for use in transmitting high acoustic power densities into geological formations such as oil-saturated sandstone or shale |
| 05/18/1982 | US4330878 Sound producing device for watches |
| 04/29/1982 | WO1982001329A1 Pressurized gas driven sound emitter |
| 02/09/1982 | US4314769 Acoustical tone generator |
| 02/09/1982 | US4314522 Acoustic electropneumatic signal generator, particularly for automotive vehicles |
| 01/12/1982 | US4310833 Electrically-energized horn |
| 12/15/1981 | US4306229 Smoke detector having an integral piezo-electric buzzer |
| 12/09/1981 | EP0041100A2 Improved acoustical tone generator and printing system using said generator |
| 12/01/1981 | CA1113288A1 Modular piezoelectric transducer component for audible signaling |
| 11/03/1981 | US4298973 Structure for coupling back cover with case band in wrist watch |
| 10/28/1981 | EP0038329A1 Pneumatic diaphragm valve pulsator |
| 10/21/1981 | EP0038043A1 Signal generator for obtaining an acoustic signal |
| 10/15/1981 | WO1981002963A1 Device for generating un acoustic signal |
| 10/06/1981 | CA1110090A1 Buzzer assembly |
| 09/30/1981 | EP0036722A1 Electromagnetic horn |
| 09/29/1981 | CA1109955A1 Method and means for reducing the resonant frequency of a piezoelectric transducer |
| 09/08/1981 | CA1108444A1 Animal call simulator |
| 09/01/1981 | US4287582 Piezo transducers with mechanical amplification for very low frequencies, and acoustic antennas |
| 09/01/1981 | CA1107992A1 Means for improving the electroacoustical properties of a buzzer |
| 08/25/1981 | US4286257 Tone generator |
| 08/18/1981 | US4284857 Tone generator |
| 07/29/1981 | EP0032531A1 Sleeping-aid device for infants |
| 07/14/1981 | US4278851 Piezoelectric buzzer |
| 07/08/1981 | EP0031330A1 An improvement in gas-operated pressure oscillation generators of the diaphragm valve type |
| 06/23/1981 | US4275389 Electrical assembly |
| 05/13/1981 | EP0028429A1 Watch with an electro-acoustic warning device |
| 05/12/1981 | US4267552 Electromagnetic sound generator for automative vehicles and the like |
| 03/31/1981 | CA1098344A1 Cycle-type vehicle attachment |
| 03/24/1981 | US4258432 Electro-acoustic device for alarm watch |
| 03/18/1981 | EP0025154A2 Electric alarm device |
| 03/17/1981 | US4257036 Tone generator |
| 02/25/1981 | EP0024267A1 Underwater acoustic beacon |
| 02/24/1981 | US4252077 Pneumatic sound generator |
| 02/17/1981 | US4251807 Miniature buzzer |
| 02/10/1981 | US4250497 Vibration-resistant coupling for insulated electrical conductor |
| 01/22/1981 | WO1981000064A1 Pneumatic diaphragm valve pulsator |
| 12/24/1980 | WO1980002887A1 An improvement in gas-operated pressure oscillation generators of the diaphragm valve type |
| 12/23/1980 | US4241334 Electric horn with twin driving electromagnets |
| 12/23/1980 | CA1092230A1 Buzzer alarm and timer |
| 12/16/1980 | CA1091742A1 Compact fail-safe buzzer |
| 12/16/1980 | CA1091489A1 Air horn |
| 12/16/1980 | CA1091487A1 Bear aware |
| 11/11/1980 | US4233679 Adjustable piezoelectric transducer for a watch |
| 11/04/1980 | US4232287 Tone generator |
| 11/04/1980 | US4232241 Electric circuit for driving a piezoelectric vibrator |
| 10/14/1980 | US4228379 Diaphragm type piezoelectric electroacoustic transducer |
| 10/14/1980 | US4227482 Pressurized fluid-actuated sound-producing device, and method of assembling it |
| 10/07/1980 | CA1087004A1 Sound generator |
| 09/09/1980 | US4222040 Cycle-type vehicle attachment |
| 08/05/1980 | CA1082962A1 High output audible alarm device utilizing a piezoelectric transducer and voltage doubling means |
| 07/08/1980 | US4212001 Electric horn |
| 07/08/1980 | CA1081358A1 Airgun marine seismic survey method and apparatus |
| 06/11/1980 | EP0011920A2 Electrical connection, method of making it, and electrical horn comprising such a connection |
| 06/10/1980 | US4207626 Acoustic decoy and jammer |
| 05/13/1980 | US4203089 Electro-hydroacoustic transducer |
| 05/06/1980 | US4202047 Acoustic jammer and torpedo decoy |
| 04/22/1980 | US4199752 Audible signal device |
| 03/25/1980 | US4195285 Double buzzer assembly |
| 03/25/1980 | US4195284 Sound generator |
| 03/04/1980 | US4191944 Electromagnetic sound generator and method of making same |
| 02/26/1980 | US4190783 Electroacoustic transducers of the bi-laminar flexural vibrating type with an acoustic delay line |
| 02/12/1980 | US4187635 Method and apparatus for sound production |
| 01/29/1980 | CA1070819A1 Implosion acoustic impulse generator |
| 01/09/1980 | EP0006833A2 Low-frequency sound generator |
| 01/08/1980 | US4183017 Alarm buzzer apparatus |
| 01/01/1980 | US4180970 Wristwatch with sound-making device |
| 12/25/1979 | US4179845 Tube type diaphragm game call |
| 12/18/1979 | CA1068220A1 Inertial phonograph device |
| 12/11/1979 | US4178578 Pest control apparatus |
| 11/20/1979 | US4175262 Buzzer with rigid electrical leads |
| 11/14/1979 | EP0005409A2 Piezoelectric transducers with mechanical amplification for very low frequencies and acoustic antennas |
| 10/23/1979 | US4171678 Air horn |
| 10/23/1979 | US4171677 Horn flare |
| 09/25/1979 | CA1062937A1 Single-housing multi-trumpet air horn |
| 09/18/1979 | US4167849 Watch with electronic buzzer |
| 07/31/1979 | US4163223 Buzzer with electronic integrated oscillation circuit |
| 07/17/1979 | US4161632 Pneumatic acoustic transducer with ferromagnetic fluid valve |
| 07/10/1979 | CA1057984A1 Lint alarm assembly |
| 07/03/1979 | US4160132 Electromagnetic acoustic transducer with its air gap established at assembly by counteracting springs |
| 06/26/1979 | US4159472 Electronic buzzer |
| 06/12/1979 | CA1056213A1 Well-hole gondola car for carrying stack containers |
| 05/22/1979 | US4156156 Method for reducing the resonant frequency of a piezoelectric transducer |
| 05/08/1979 | CA1053945A1 Vibrating membrane horns |
| 05/01/1979 | US4152552 Horn speaker and method for producing low distortion sound |
| 04/17/1979 | CA1052902A1 Pressurized gas discharging apparatus for use as a down-bore seismic impulse source |
| 04/10/1979 | US4149153 Contactless buzzer |
| 04/10/1979 | US4148182 Buzzer mechanism for alarm clock or the like |
| 04/03/1979 | US4147899 Broadband electromagnetic sound source with differently tuned diaphragms |
| 03/20/1979 | US4145688 Low cost buzzer |
| 02/27/1979 | US4142186 Means for improving the electroacoustical properties of a buzzer |
| 02/27/1979 | US4142171 Efficient apparatus for projecting acoustic waves |
| 02/20/1979 | CA1048824A1 Electro-acoustic signalling horns |