| 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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| 04/28/1999 | EP0910848A1 Piezo-electric actuator-transducer for sound reproduction systems |
| 04/28/1999 | EP0910317A1 Surgical instrument for mechanical removal of bone cement, and process for production of shock waves |
| 04/28/1999 | CN2316711Y Hanger for loadspeaker box |
| 04/28/1999 | CN2316710Y Intelligent FET intermittent electric horn |
| 04/28/1999 | CN2316709Y Warning horn controller for automobile |
| 04/28/1999 | CN1215300A Piezo-electric electro-acoustic transducer |
| 04/22/1999 | WO1999019965A1 Audible feedback apparatus for indicating operation and position of a movable element |
| 04/22/1999 | WO1999001234A3 Ultrasonic transducer |
| 04/21/1999 | CN1214607A Electrocoustic transducer |
| 04/15/1999 | WO1999018563A2 Ultrasonic transducer |
| 04/13/1999 | US5894451 Impulsive snap-through acoustic pulse generator |
| 04/13/1999 | US5894264 Apparatus for generating an audible tone |
| 04/08/1999 | DE19743664A1 Acoustic signal source for automobile |
| 04/07/1999 | EP0906611A1 Acoustic transducers using a working fluid |
| 04/01/1999 | DE19742294A1 Sound receiver or producer |
| 03/31/1999 | EP0905676A2 Transmitting antenna for sonar apparatus |
| 03/30/1999 | US5889873 Piezoelectric acoustic transducer |
| 03/30/1999 | US5889732 Sounder |
| 03/24/1999 | EP0903725A2 Folded shell projector |
| 03/24/1999 | EP0902943A1 Protective cover assembly having sound transmission characteristics |
| 03/17/1999 | CN2311052Y Visible door bell |
| 03/09/1999 | US5881021 Quick charge capacitor powered non-interruptible wearable personal security alarm |
| 03/02/1999 | US5878148 Compression driver |
| 02/24/1999 | CN2308939Y Loudspeaker able to regulate high pitch direction |
| 02/23/1999 | US5875154 For producing an acoustic output in an underwater environment |
| 02/17/1999 | EP0896675A1 Acoustic source ii |
| 02/17/1999 | CN2308142Y Integral police motrocycle alarming horn |
| 02/17/1999 | CN2308141Y Electronic bicycle bell |
| 02/17/1999 | CN2308140Y Land and water two-used whistle |
| 02/16/1999 | US5872506 Piezoelectric transducer having directly mounted electrical components and noise making device utilizing same |
| 02/11/1999 | WO1999006989A1 Controlling method and apparatus of constant-frequency sound-production of electrical horn |
| 02/11/1999 | DE19832072A1 Piezo-electric electro-acoustic converter |
| 02/10/1999 | CN2307335Y Electronic horn device capable of changing volume for car |
| 02/09/1999 | US5868756 Handpiece for use in lithotripsy |
| 02/04/1999 | DE19728718A1 Acoustic wave source arrangement e.g. for medical diagnosis and therapy |
| 02/03/1999 | CN2306548Y Electronic lighting horn |
| 02/02/1999 | US5867090 Diaphragm buzzer |
| 01/28/1999 | DE19743096C1 Transmission antenna for sonar system for towing behind a waterborne vehicle |
| 01/14/1999 | WO1999001234A2 Ultrasonic transducer |
| 01/07/1999 | DE19727877A1 Ultraschallwandler Ultrasonic transducer |
| 01/06/1999 | CN2303356Y Non-contact electric horn for automobiles |
| 01/06/1999 | CN1041587C Production of vibrating object used in electric acoustic exchanger |
| 01/05/1999 | US5856956 Piezoelectric acoustic transducer |
| 01/05/1999 | US5856954 Process of acoustic emission for sonar |
| 12/30/1998 | EP0887989A2 Appliance communication system |
| 12/23/1998 | WO1998057761A1 Annunciator |
| 12/16/1998 | EP0884719A1 Method and circuit for emulating the contact breaker of a horn |
| 12/16/1998 | CN2300971Y Contactless car electric horn controller |
| 12/16/1998 | CN2300730Y Environmental protection type device capable of converting engine noise into music |
| 12/09/1998 | EP0883326A2 Transformer for piezoelectric speaker and piezoelectric speaker operative with said transformer |
| 12/09/1998 | CN2300166Y Steam whistle horn |
| 12/03/1998 | WO1998053924A1 Flexural plate sound transducer having low resonant frequency |
| 12/02/1998 | EP0881623A1 Control circuit for a vibrating membrane |
| 12/02/1998 | EP0880761A1 Alarm tag |
| 12/02/1998 | CN2299368Y Automobile horn intermittent sounder |
| 11/24/1998 | US5841343 Buzzer with rotary volume adjustment |
| 11/19/1998 | WO1998052170A1 Plastic horn |
| 11/18/1998 | CN1199485A Alarm tag |
| 11/18/1998 | CN1199214A Contact-less electronic horn |
| 11/17/1998 | US5836203 Magnetically excited flexural plate wave apparatus |
| 11/11/1998 | CN1198648A Multi-function earphone-telephone device |
| 11/10/1998 | US5834877 Ultrasonic transducer units for web detection and the like |
| 11/04/1998 | EP0772868B1 An acoustic warning device, particularly for motor vehicles |
| 11/04/1998 | CN1040606C Electracoustic transducer and method of fabricating the same |
| 11/03/1998 | US5830300 Method of ultrasonic welding for a resin case |
| 10/28/1998 | EP0874351A2 Ultrasonic transmitter-receiver |
| 10/28/1998 | CN1197199A Ultrasonic transmitter-receiver |
| 10/27/1998 | US5828012 Protective cover assembly having enhanced acoustical characteristics |
| 10/27/1998 | CA2176162C Low distortion hydrophone |
| 10/14/1998 | CN2294513Y Air whistle |
| 10/10/1998 | CA2202321A1 Pneumatic horn |
| 10/01/1998 | WO1998025437A3 Method of making an acoustic transducer |
| 09/30/1998 | CN2293103Y Electric pneumatic brass-wind instrument device |
| 09/23/1998 | CN1193885A Electromagnetic acoustic transducer |
| 09/23/1998 | CN1193557A Sound generator |
| 09/17/1998 | WO1998040857A1 Quick charge capacitor powered non-interruptible wearable personal security alarm |
| 09/16/1998 | EP0865023A1 Sound generator |
| 09/16/1998 | CN2291704Y Horn |
| 09/16/1998 | CN2291703Y Steering speech loud-speaking alarm |
| 09/08/1998 | US5805529 Folded shell projector (FSP) |
| 09/03/1998 | WO1998038608A1 Sounder |
| 09/02/1998 | CN1192117A Electroacoustic transducer |
| 08/19/1998 | CN2288489Y Contactless electric horn circuit apparatus |
| 08/13/1998 | DE19723499C1 Shock wave source based on electromagnetic principle |
| 08/12/1998 | CN2287744Y Multifunctional electronic horn for automobile |
| 08/04/1998 | US5789844 Acoustic transducer |
| 07/30/1998 | DE19802829A1 Vehicle horn system with variable sound intensity |
| 07/22/1998 | CN1188548A Electrodynamic driving means for acoustic emitters |
| 07/21/1998 | US5782198 Audible warning device |
| 07/16/1998 | WO1998031189A1 Piezoelectric electroacoustic transducer |
| 07/14/1998 | US5781646 Flextensional transducer |
| 07/14/1998 | US5780958 Piezoelectric vibrating device |
| 07/09/1998 | WO1998030070A1 Driver circuit and method of operating the same |
| 07/01/1998 | CN1186406A Electromagnetic voice converter |
| 06/30/1998 | US5774423 Acoustic sensor and array thereof |
| 06/30/1998 | US5774041 Designer chime cover |
| 06/24/1998 | CN2284992Y Electromagnetic sound |
| 06/16/1998 | US5768216 Flexitensional transducer having a strain compensator |
| 06/11/1998 | WO1998025437A2 Method of making an acoustic transducer |
| 06/04/1998 | DE19649738A1 High capacity pressure wave source for producing short bursts of high- energy pressure waves |