| 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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| 10/12/1988 | CN87216232U Unitized loudspeaker alarm |
| 10/05/1988 | CN87212858U Miniature air sounder used in sonic controlling |
| 09/13/1988 | US4771476 Sound chamber closure for an electroacoustic transducer |
| 08/30/1988 | US4766888 Shock wave generator for an apparatus for non-contacting disintegration of calculi in the body of a life form |
| 08/16/1988 | US4764907 Underwater transducer |
| 08/09/1988 | US4763109 Acoustical vehicle horn with improved vent |
| 08/04/1988 | EP0260313A4 Adaptor for coupling plural compression drivers to a common horn. |
| 08/02/1988 | US4761582 Dual mode transducer |
| 07/27/1988 | EP0275460A1 Shock waves emitting head for the non-invasive fragmentation of concrements |
| 07/27/1988 | EP0275427A1 Shock wave discharge tube |
| 06/30/1988 | DE3641620C1 Signal transmitter for motor vehicles, in particular electropneumatic horn |
| 06/28/1988 | US4754441 Directional flextensional transducer |
| 06/09/1988 | DE3739369A1 Transducer mounting with a first part and a second part which are detachably connected to one another |
| 06/01/1988 | EP0269323A1 Sealed chambers |
| 05/25/1988 | EP0268082A1 Shock wave generator with a short initial pulse |
| 05/24/1988 | US4746905 Sound producing device |
| 05/19/1988 | WO1988003691A1 Acoustic signal generator |
| 05/17/1988 | CA1236715A1 Toroidal whistle |
| 05/11/1988 | EP0266538A1 Shock wave generator |
| 05/11/1988 | EP0266485A2 Electromechanical horn with excitation of its acoustic diaphragm controlled electronically by sensors which measure its resonance frequency |
| 05/05/1988 | WO1988003300A1 Electric horn with improved pole piece and adjusting cap |
| 05/03/1988 | US4742499 Flextensional transducer |
| 05/03/1988 | US4742264 Piezoelectric sound generator |
| 05/03/1988 | CA1235930A1 Acoustic fish behavioural control device |
| 04/20/1988 | CN87206751U Multisound and double-frequency electronic signal bell with functions of identification and record |
| 04/19/1988 | CA1235317A1 Bracket for mounting shell-less drums |
| 04/19/1988 | CA1235316A1 Motor actuated buzzer |
| 04/13/1988 | EP0263349A1 Shock wave generator |
| 04/05/1988 | US4736350 Electromagnetic transducers for underwater low-frequency high-power use |
| 04/05/1988 | US4736192 Excitation circuit for piezo-electric sound generators |
| 03/23/1988 | EP0260313A1 Adaptor for coupling plural compression drivers to a common horn. |
| 03/16/1988 | EP0259559A1 Shock-wave generator for non-contacting disintegration of concretions in a living body |
| 03/15/1988 | US4731764 Sonar transducers |
| 03/09/1988 | EP0258561A1 Shock-wave generator, particularly for lithotripsy |
| 03/01/1988 | US4728933 Miniature dual cavity ringer |
| 03/01/1988 | US4727875 Generator of high power elastic pulses focused in a liquid and obtained by impact |
| 03/01/1988 | CA1233538A1 Security alarm apparatus |
| 02/24/1988 | EP0256232A1 Shock wave generator for the disintegration of concretions in a living body using non-contacting means |
| 02/24/1988 | EP0256203A1 Shock wave generator for the disintegration of concretions in a living body by non-contacting means |
| 02/24/1988 | EP0256025A1 Acoustical vehicle horn with improved vent |
| 02/24/1988 | CN85100714B Electromagnetic pulse transducer |
| 02/18/1988 | DE3627168A1 Electrical device having a capacitor |
| 02/10/1988 | CN86209245U Negative-resistance effect buzzer |
| 01/28/1988 | DE3624808A1 Shock wave generator with a flat coil |
| 01/27/1988 | EP0254104A1 Shock-wave generator for producing an acoustic shock-wave pulse |
| 01/27/1988 | CN87200770U Headband automatic monitored control balance device of posture with reading |
| 01/20/1988 | EP0253053A1 Shock-wave generator for a device for non-contacting desintegration of concretions in a living body |
| 01/12/1988 | US4718372 Vehicle warning system |
| 01/05/1988 | US4717906 Electric horn with improved pole piece and adjusting cap |
| 12/05/1987 | CN86207940U Multi-purpose sound and light generator with low voltage and little power consumption |
| 12/01/1987 | US4709652 Pneumatic audio sweep generator |
| 11/24/1987 | US4709360 Hydrophone transducer with negative feedback system |
| 11/10/1987 | US4706230 Underwater low-frequency ultrasonic wave transmitter |
| 11/10/1987 | US4705981 Ultrasonic transducer |
| 11/10/1987 | US4705059 Electrofluidic transducer of the nozzle/plate type and hydraulic servo-valve equipped with such a transducer |
| 11/04/1987 | EP0243591A2 Underwater transducer |
| 10/28/1987 | EP0242945A1 Acoustic fish behavioural control device |
| 10/27/1987 | US4703402 Flash light with alarm and rescuer |
| 10/20/1987 | US4701749 Electroacoustic calling device with universal bearing supporting a sound aperture closure member |
| 10/13/1987 | US4700177 Sound generating apparatus with sealed air chamber between two sounding plates |
| 10/06/1987 | US4697932 Multi-signal alarm |
| 10/06/1987 | US4697588 Shock wave tube for the fragmentation of concrements |
| 09/30/1987 | EP0239307A2 Miniature dual cavity ringer |
| 09/24/1987 | WO1987005773A1 Flextensional transducers |
| 09/24/1987 | WO1987005772A1 Sonar transducers |
| 09/24/1987 | WO1987005733A1 Adaptor for coupling plural compression drivers to a common horn |
| 09/23/1987 | EP0237727A2 Electromagnetic signal horn |
| 09/22/1987 | US4695986 Ultrasonic transducer component and process for making the same and assembly |
| 09/16/1987 | EP0236460A1 Compressed-air horn. |
| 09/08/1987 | US4692741 Motor actuated buzzer assembly with a plurality of leaf springs of different frequencies |
| 08/25/1987 | US4689776 Hand held portable dog repelling device |
| 08/25/1987 | US4689609 Electronic horn with spiral deflecting walls coupled to a truncated cone structure |
| 08/19/1987 | CN86202890U Multi-purpose set of auto volume control of electric horn |
| 08/18/1987 | US4686928 Toroidal whistle |
| 07/28/1987 | US4683460 Intrusion alarm system with automatic exit control and misset indicator |
| 07/23/1987 | DE3601178A1 Mechanical-acoustic alarm system |
| 07/16/1987 | WO1987004289A1 Acoustical vehicle horn with improved vent |
| 06/30/1987 | US4677337 Broadband piezoelectric ultrasonic transducer for radiating in air |
| 06/23/1987 | US4674505 Apparatus for the contact-free disintegration of calculi |
| 06/02/1987 | US4669472 Contactless comminution of concrements in the body of a living being |
| 05/27/1987 | CN86205828U Phonographic recorder-loudspeaker used on cars |
| 05/26/1987 | US4668937 Speaker activation control by microcomputer |
| 05/12/1987 | US4664055 Alarm horn |
| 04/21/1987 | US4660186 Electromagnetic transducers for underwater low-frequency high-power use |
| 04/07/1987 | US4655220 Shock wave generator apparatus |
| 03/31/1987 | US4654637 Buzzer with adjustable volume level |
| 03/26/1987 | WO1987001850A1 Compressed-air horn |
| 03/25/1987 | EP0215657A2 Sonar transducers |
| 02/24/1987 | US4646276 Acoustic fish behavioral control device |
| 02/17/1987 | CA1218154A1 Generic interactive speech system |
| 01/22/1987 | DE3525641A1 Method and device for the contactless crushing of concrements in the body of living beings |
| 01/21/1987 | EP0209416A1 Generator of focussed high-power elastic pulses in a fluid, and generated by percussion |
| 01/21/1987 | EP0209053A2 Method and apparatus for the non-contacting disintegration of concretions in a living body |
| 01/20/1987 | US4638205 Piezo-electric transducer |
| 01/07/1987 | EP0207095A1 A rare earth flextensional transducer |
| 01/07/1987 | CN86104494A Generator of high power elastic pulses focused in a liquid and obtained by impact |
| 01/06/1987 | US4635242 Underwater signalling device |
| 12/17/1986 | EP0205381A1 Electrofluidic jet/flapper transducer, and servo valve equipped with such a transducer |
| 11/25/1986 | US4624220 Infrasound generator |
| 10/07/1986 | US4616351 Pest control apparatus |