| 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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| 07/02/2002 | US6414604 Piezoelectric transducer assembly adapted for enhanced functionality |
| 06/26/2002 | CN2497391Y Debugging-free contactless klaxon for automobile |
| 06/25/2002 | US6411138 Buzzer drive circuit |
| 06/20/2002 | WO2002019388A3 Class v flextensional transducer with directional beam patterns |
| 06/20/2002 | US20020076077 Multifunction acoustic device |
| 06/20/2002 | US20020073913 Vehicle horn |
| 06/19/2002 | EP1215934A2 Multifunction acoustic device |
| 06/12/2002 | EP0950342B1 Driver circuit and method of operating the same |
| 06/12/2002 | CN1353322A Enclosed optical encoder with signal discrimination |
| 06/12/2002 | CN1352920A Eddy-degassing and cooling system for electromagnetic shock-wave generator of stone crusher |
| 06/11/2002 | US6404106 Pressure tolerant transducer |
| 06/05/2002 | EP1015912B1 Acoustic source i |
| 06/04/2002 | US6400649 Self biased transducer assembly and high voltage drive circuit |
| 05/28/2002 | US6394224 Structure of speaker |
| 05/23/2002 | DE10103942C1 Flow-operated sound generator e.g. for providing active noise damping or acoustic warning signal, has flow boundary layer altered by controlled actuators within aerodynamic structure inserted in flow |
| 05/22/2002 | CN2492269Y Alarm bell |
| 05/16/2002 | US20020057193 Piezoelectric transducer assembly for enhanced functionality |
| 05/16/2002 | DE10145328A1 Vibration board takes the form of a plywood board which is provided with a vibrator unit operating within a specified low-frequency range |
| 05/16/2002 | DE10052123A1 Electromagnetic coil for generating pressure waves has an additional constant magnetic field source to enable larger pressure waves to be generated without increasing the current through the coil |
| 05/15/2002 | EP1205259A1 Vibration generating device and cellular phones using the same |
| 05/15/2002 | CN1349439A Vibrating actuator and feeding mechanism thereof |
| 05/14/2002 | US6389148 Electric-acoustic transducer having moving magnet and transducing method thereof |
| 05/14/2002 | US6386938 Sound-producing device |
| 05/08/2002 | EP1202820A1 A driving device for a hydroacoustic transmitter |
| 05/07/2002 | US6385328 Electro-acoustic micro-transducer having three-mode reproduction feature |
| 05/02/2002 | US20020051557 Multiple-function convertor for converting electric signals to vibration of elements of a portable electronic instrument |
| 05/02/2002 | EP1202249A1 Waterproof transducer for half-wavelength array |
| 04/30/2002 | US6380847 Control circuit for a vibrating membrane |
| 04/25/2002 | WO2002032506A1 Technique and apparatus for ultrasound therapy |
| 04/24/2002 | EP1199906A1 Aerial ultrasonic sensor |
| 04/23/2002 | US6374676 Ultrasonic transducer |
| 04/17/2002 | CN1345508A Vertical buzzer/earphone to reduce humming sounds |
| 04/17/2002 | CN1345169A Multi-functional sound device |
| 04/16/2002 | US6373959 Electroacoustic transducer |
| 04/16/2002 | US6373958 Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion |
| 04/16/2002 | US6373362 Signal converter |
| 04/10/2002 | CN2485747Y Electronic loudspeaker |
| 04/09/2002 | US6370086 Ultrasound sensor for distance measurement |
| 04/03/2002 | CN1343349A Buzzer with zener diode in discharge path |
| 04/02/2002 | CA2101053C Flextensor acoustic transducer for deep immersion |
| 03/28/2002 | WO2001099389A3 Omnidirectional ultrasonic communication system |
| 03/28/2002 | US20020036954 Ultrasonic sensor having diaphragm |
| 03/27/2002 | EP1191809A2 Multifunction acoustic device |
| 03/27/2002 | CN1342031A 信号转换器 Signal converter |
| 03/26/2002 | US6363139 Omnidirectional ultrasonic communication system |
| 03/26/2002 | US6362726 Sounder device which deflects sound away from a housing |
| 03/21/2002 | US20020033681 Multifunction acoustic device |
| 03/20/2002 | EP1188152A1 Acoustic-mechanical verification transmitter |
| 03/20/2002 | CN1341254A Electroacoustic transducer and method of manufacture thereof |
| 03/20/2002 | CN1340802A Electric sound transducer |
| 03/20/2002 | CN1340801A Electric sound transducer |
| 03/20/2002 | CN1081374C Three-wire wiring thick-film electric-circuit block contactless electric loudspeaker |
| 03/19/2002 | US6359835 High intensity directed light and sound crowd dispersion device |
| 03/19/2002 | US6359541 Surface-mounted electromagnetic sound generator |
| 03/13/2002 | EP1187509A1 Signal converter functioning as a loudspeaker or a receiver and as a vibrator |
| 03/13/2002 | EP1186352A1 Vibrating actuator and feeding mechanism thereof |
| 03/13/2002 | CN2482181Y Air horn |
| 03/07/2002 | WO2002019388A2 Class v flextensional transducer with directional beam patterns |
| 03/07/2002 | US20020027491 Signal converter |
| 03/07/2002 | US20020026976 For cleaning in the manufacturing of semiconductor devices, liquid crystal display panels |
| 03/06/2002 | EP1185140A2 Electroacustic transducer |
| 03/06/2002 | CN1080530C Miniature speeching body |
| 03/05/2002 | CA2236370C Folded shell projector (fsp) |
| 02/28/2002 | US20020025058 Electroacoustic transducer |
| 02/28/2002 | US20020025052 Electroacoustic transducer |
| 02/21/2002 | US20020021819 Electroacoustic transducer |
| 02/21/2002 | DE10139341A1 Ultrasound sensor for obstacle warning device used as a motor vehicle parking aid, has thickness of vibrating membrane reduced for limiting resonance duration |
| 02/19/2002 | US6349142 Structure of speaker use on ship |
| 02/13/2002 | EP1178901A1 Sound transmission device for a motor vehicle |
| 02/07/2002 | WO2002009974A1 Electromechanical warning horn system |
| 02/06/2002 | CN2476078Y Buzzer |
| 01/31/2002 | WO2002009471A1 Aerial ultrasonic sensor |
| 01/30/2002 | CN1078726C Controlling method and apparatus of constant-frequency sound-producing of electrical horn |
| 01/24/2002 | US20020008602 Electromagnetic actuator mounting structure |
| 01/23/2002 | EP1173842A1 Ultrasound sensor having a pot-shaped oscillating element |
| 01/23/2002 | EP1173291A1 Apparatus having an electroacoustc transducer forming a sound reproducing means and a part of vibration generating means |
| 01/16/2002 | CN2472305Y Motorcycle horn |
| 01/08/2002 | US6336368 Method and apparatus for energy efficient tacking of resonant devices |
| 01/03/2002 | WO2001060530A8 Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means |
| 12/27/2001 | WO2001099389A2 Omnidirectional ultrasonic communication system |
| 12/20/2001 | WO2001096035A1 Electromagnetic induction type actuator and portable communications device |
| 12/19/2001 | EP1164574A1 Electroacoustic transducer and method of manufacture thereof |
| 12/19/2001 | EP1163493A1 Transducer configurations and related method |
| 12/19/2001 | EP0758455B1 Flextensional acoustic source for offshore seismic exploration |
| 12/13/2001 | WO2001094035A1 Vibration generating device and cellular phones using the same |
| 12/12/2001 | EP1161756A1 Buzzer with zener diode in discharge path |
| 12/06/2001 | WO2001093344A1 Piezoelectric acoustic actuator |
| 12/05/2001 | EP1159854A2 Vibration exciters for driving bending wave panels |
| 11/29/2001 | US20010046184 Apparatus for generating acoustic waves |
| 11/27/2001 | CA2254340C Protective cover assembly having sound transmission characteristics |
| 11/21/2001 | CN1322645A Air source transfering pneumatic horn |
| 11/20/2001 | US6320821 Fluidborne sound projector |
| 11/15/2001 | US20010040839 Ultrasound sensor for distance measurement |
| 11/15/2001 | DE10017068C1 Schallkopf Transducer |
| 11/14/2001 | EP0826157B1 Drive assembly for acoustic sources |
| 11/14/2001 | CN1321967A Electromagnetic sounder |
| 11/14/2001 | CN1321847A Photoelectric controlled music trotting horse lamp |
| 11/14/2001 | CN1321551A Multifunctional vibration exciter capable of suppressing astable work around resonance frequency |
| 11/13/2001 | US6317033 Vehicle horn |
| 11/07/2001 | CN1321294A Electromagnetic electroacoustic transducer |