| 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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| 03/14/2001 | EP1082872A1 Electric-acoustic transducer having moving magnet and transducing method thereof |
| 03/06/2001 | US6198405 Driver circuit and method of operating the same |
| 02/28/2001 | EP1079662A2 Electro-acoustic micro-transducer having an improved dynamic and frequency range |
| 02/28/2001 | CN1285705A Small electricity-sound converter with three-mode replaying property |
| 02/27/2001 | US6195004 Distributed earcon local area network |
| 02/27/2001 | US6194810 Piezoelectric or similar transducer device with an oscillating circuit excitable by a control circuit |
| 02/22/2001 | WO2001012345A1 A driving device for a hydroacoustic transmitter |
| 02/21/2001 | CN2420713Y Dust filting electric air horn |
| 02/15/2001 | DE19937195A1 Ultrasonic transducer e.g. for parking assistance in motor vehicle, has diaphragm held at tapered end of rubber-like holding piece |
| 02/14/2001 | CN2419662Y Durable horns for vehicles or motorcycles |
| 02/14/2001 | CN1283949A Piezoelectric electroacoustic transducer |
| 02/13/2001 | US6188313 Device for generating sound |
| 02/08/2001 | DE10033576A1 Piezoelectric electroacoustic transducer for loudspeakers, comprises connection clamp for connecting oscillating sections of two membranes |
| 01/16/2001 | US6175297 Method and circuit for emulating a trumpet contact breaker |
| 01/11/2001 | WO2001003109A1 Magnetic breaker system for horn |
| 01/11/2001 | DE10015183A1 Piezoelektrische Keramikzusammensetzung, dieselbe verwendender Summer und Aktuator The piezoelectric ceramic composition, the same used Direction buzzer and actuator |
| 01/03/2001 | EP1064645A2 Ultrasonic transducer |
| 01/03/2001 | CN1278636A Sound generator for portable device |
| 12/27/2000 | EP1063632A1 Water resistant device for immersion in water and comprising a sound transducer |
| 12/27/2000 | EP1063020A1 Electromagnetic actuator and structure for mounting the same |
| 12/26/2000 | US6166624 Piezoelectric horn, particularly for vehicles |
| 12/26/2000 | US6164408 Plenum mounted, flat panel masking loudspeaker system and method for mounting a masking loudspeaker in a ceiling plenum |
| 12/20/2000 | CN1277792A Electric-acoustic transducer having moving magnet and transducing method thereof |
| 12/14/2000 | WO2000075880A1 Acoustic-mechanical verification transmitter |
| 12/14/2000 | WO2000054549A3 Vibration exciters for driving bending wave panels |
| 12/07/2000 | DE19925509A1 Akustisch-mechanisches Verifikations-Sendegerät Acoustic-mechanical verification transmitter |
| 12/05/2000 | US6155196 Multi-depth acoustic signal generating device |
| 11/30/2000 | DE19922216A1 Schallübertragungsvorrichtung für ein Kraftfahrzeug A sound transmission device for a motor vehicle |
| 11/23/2000 | WO2000069680A1 Sound transmission device for a motor vehicle |
| 11/21/2000 | US6151398 Magnetic film ultrasonic emitter |
| 11/21/2000 | US6150924 Surface-mounted electromagnetic sound generating body |
| 11/16/2000 | DE19930025A1 Arrangement for attaching a membrane to a tubular sound transmission element comprises a region in which the inner and outer parts of this element radially overlap one another and clamp the membrane |
| 11/15/2000 | CN1273541A Electrical/mechanical/soundconverter and apparatus of electrical/mechaical/sound conversion device using the converter |
| 11/14/2000 | US6147595 Structure of buzzer |
| 11/01/2000 | CN2403628Y Multi-function electric horn testing device |
| 10/31/2000 | US6141430 Electroacoustic transducer |
| 10/26/2000 | WO2000062945A1 Vibrating actuator and feeding mechanism thereof |
| 10/24/2000 | US6137270 Buzzer driving device |
| 10/18/2000 | EP1045613A2 Driving circuit, electro-mechanical-acoustic transducer, and portable terminal apparatus |
| 10/18/2000 | EP1044075A1 A vibrating aggregate |
| 10/18/2000 | CN2401962Y Contact arc eliminated electric loudspeaker |
| 10/18/2000 | CN1270489A Driving circuit, electromechanic acoustic transducer and portable terminal device |
| 10/18/2000 | CN1270152A Piazoelectric ceramic composition, buzzer thereof and controller |
| 10/17/2000 | US6133823 Electronic novelty device |
| 10/10/2000 | US6130618 Piezoelectric transducer assembly adapted for enhanced functionality |
| 10/05/2000 | WO2000059180A1 Vertical buzzer/earphone to reduce humming sounds |
| 10/04/2000 | EP1041537A2 Pressure tolerant transducer |
| 10/03/2000 | US6127918 Buzzer with a sound film and equalizing or whirlpool sound mechanism |
| 09/27/2000 | EP1039444A2 Self biased transducer assembly and high voltage drive circuit |
| 09/27/2000 | EP1038290A1 Ultrasonic transducer with a cup-shaped support |
| 09/25/2000 | CA2298394A1 Self biased transducer assembly and high voltage drive circuit |
| 09/21/2000 | WO2000055841A1 Buzzer with zener diode in discharge path |
| 09/14/2000 | WO2000054549A2 Vibration exciters for driving bending wave panels |
| 09/13/2000 | EP1034610A1 Acoustic resonator power delivery |
| 09/08/2000 | WO2000026899A3 Rms process tool |
| 09/07/2000 | DE10007455A1 Piezoelectric acoustic device e.g. for buzzer has insulator cap held with adhesive to diaphragm |
| 09/06/2000 | CN2395349Y Acousto-optic signal device for computer controlled ship anti-collision |
| 09/06/2000 | CN1265769A Controlling method and apparatus of constant-frequency sound-producing of electrical horn |
| 08/31/2000 | WO2000050853A1 Transducer configurations and related method |
| 08/31/2000 | DE19916891C1 Equipment for generating acoustic waves incorporates a switching device and a high-voltage capacitor to be discharged by this switching device |
| 08/30/2000 | EP1032244A2 Electroacoustic transducer |
| 08/30/2000 | EP1031229A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method |
| 08/30/2000 | CN1265001A Electrosonic energy transducer |
| 08/29/2000 | US6111971 Electroacoustic transducer |
| 08/29/2000 | US6111967 Multi-segmented high deformation piezoelectric array |
| 08/29/2000 | US6111497 Buzzer with Zener diode in discharge path |
| 08/29/2000 | US6111337 Ultrasonic transducer dipole |
| 08/23/2000 | CN1264104A Piezoelectric acoustic assembly |
| 08/22/2000 | USRE36828 Electroacoustic transducer |
| 08/22/2000 | US6108433 Method and apparatus for a magnetically induced speaker diaphragm |
| 08/22/2000 | US6108432 Surface mount electromagnetic sound producing device |
| 08/10/2000 | WO2000046614A1 High-power acoustic source for marine seismic operations |
| 08/10/2000 | CA2361881A1 High-power acoustic source for marine seismic operations |
| 08/03/2000 | DE10004223A1 Piezoelectric measured value transducer device e.g. for use in oscillators, has AC current generator as trigger circuit connected to control device such that its status changes as sign of operating current changes |
| 08/01/2000 | US6095888 Turkey call with glare resistant striking surface |
| 07/25/2000 | US6094402 Ultrasonic transducer |
| 07/19/2000 | CN2388686Y Multi-functional horn |
| 07/11/2000 | US6087760 Ultrasonic transmitter-receiver |
| 07/11/2000 | US6085862 Drive assembly for acoustic sources |
| 07/05/2000 | EP1016467A2 Vibration motor holding apparatus and portable electronic equipment having the same |
| 07/05/2000 | EP1015912A1 Acoustic source i |
| 07/05/2000 | CN1258954A Vibratory motor maintainer and portable electronic equipment with the same apparatus |
| 07/05/2000 | CN1258904A Sound generator: piezoelectric buzzer on flexiable and tightening surface of inflated material |
| 06/27/2000 | US6081064 Acoustic transducer system |
| 06/20/2000 | US6076630 Acoustic energy system for marine operations |
| 06/20/2000 | US6076629 Low frequency flextensional acoustic source for underwater use |
| 06/14/2000 | EP1008394A1 Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion |
| 06/07/2000 | CN2382100Y Improved structure of buzzer |
| 06/02/2000 | WO2000032013A1 Electric-acoustic transducer having moving magnet and transducing method thereof |
| 05/31/2000 | EP0733247A4 A siren unit |
| 05/31/2000 | CN2380991Y Bottle-shaped horn |
| 05/31/2000 | CN1255035A Supporter of sound body |
| 05/31/2000 | CN1254908A Special circuit for horn relay |
| 05/25/2000 | DE19853506A1 Acoustic signal source for automobile has interference suppression components mounted on insulating circuit board with contact pads for connection to electrical circuit of acoustic signal source |
| 05/24/2000 | EP1003317A2 An electromagnetic sound generating body |
| 05/24/2000 | CN1254244A Electromagnetic sounding body |
| 05/17/2000 | EP1001651A2 Sounding-body holding device |
| 05/17/2000 | CN2378804Y Horn of vehicle |
| 05/17/2000 | CN1253352A Technology for forging base of monoblock loudspeaker |
| 05/11/2000 | WO2000026899A2 Rms process tool |