| 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) |
|---|
| 09/14/1994 | CN1092238A Electroacoustic transducer |
| 09/13/1994 | US5345852 Drainage structure of a volute horn |
| 09/06/1994 | US5345428 Flextensional transducers |
| 08/30/1994 | US5343109 Ultrasonic transducer for measuring the travel time of ultrasonic pulses in a gas |
| 08/30/1994 | US5343084 Variable level periodic excitation circuit for a capacitive load |
| 08/25/1994 | DE4304996A1 Adaptor for compressed air horns |
| 08/24/1994 | CN2175454Y Electric automobile hooter with no contact |
| 08/17/1994 | EP0610380A1 Horn for sportfans |
| 08/16/1994 | US5337461 Loading of flextensional transducer shells |
| 08/04/1994 | WO1994009479A3 Alarm systems |
| 07/27/1994 | CN2172901Y 集成电路电喇叭 IC horn |
| 07/21/1994 | WO1994016418A1 Transducer apparatus responsive to external perturbation |
| 07/21/1994 | CA2152801A1 Transducer apparatus responsive to external perturbation |
| 07/12/1994 | US5329499 Acoustic transmitter |
| 07/06/1994 | CN1025387C Induction door bell |
| 06/29/1994 | CN2170573Y Convertor for induction of outside disturbance |
| 06/15/1994 | EP0601110A1 Drive system for acoustic devices. |
| 05/25/1994 | EP0598556A1 Electroacoustic transducer |
| 05/18/1994 | CN2165507Y Gas alarm for person |
| 05/04/1994 | EP0594713A1 A motor-vehicle horn |
| 04/28/1994 | WO1994009479A2 Alarm systems |
| 04/14/1994 | DE4233607A1 Electronic sound module with automatic on=off switching - has overpressure switch integrated and welded in module to automatically switch electronics on and off |
| 04/13/1994 | CN2161969Y Hooter for asking help |
| 04/12/1994 | US5303210 Integrated resonant cavity acoustic transducer |
| 04/12/1994 | US5302055 Signalling device |
| 04/07/1994 | DE4314242C1 Electromagnetic signal horn with housing and membrane - has central opening in membrane as four edged hole with edge spacing slightly greater than diameter of mandrel attachment. |
| 04/06/1994 | EP0590799A2 Acoustic transducer |
| 03/31/1994 | DE4235089C1 Ultrasound transducer with piezoelectric element - has weighting ring with radial incisions concentric to transducer element on matching body |
| 03/30/1994 | CN2160142Y Electronic bell |
| 03/22/1994 | US5296839 Sound generating apparatus |
| 03/16/1994 | EP0360806B1 Air-driven low-frequency sound generator with positive feedback system |
| 03/10/1994 | DE4229631A1 Acoustic lens with variable focus - has one ring shaped deformable lens wall with outer edge kept bending moment free and inner area displaced by adjuster for focussing |
| 03/08/1994 | US5293149 Vehicle horn with electronic solid state energizing circuit |
| 03/08/1994 | US5293010 Sound dampening device for horns |
| 03/03/1994 | DE4228963A1 Pressure impulse source - has cavitation-proof coated membrane limiting fluid, acoustic spreading medium |
| 03/02/1994 | CN1083300A Temperature compensation of sound pressure characterastics of electric sound inverter |
| 03/01/1994 | US5291461 Elastomer structure for transducers |
| 03/01/1994 | US5291460 Piezoelectric sounding body |
| 02/23/1994 | EP0583805A1 Flextensional transducer |
| 02/16/1994 | CN2156564Y Children cart electric loudspeaker |
| 02/15/1994 | US5287084 Thin buzzer |
| 02/10/1994 | DE4242131C1 Acoustic pressure-impulse generator using shock-load on diaphragm - has diaphragm mechanically pre-loaded into starting position after generating impulse |
| 02/09/1994 | EP0582557A2 Piezomembrane constrained in the center and its employment to provide an acoustic howler |
| 02/02/1994 | CN2155056Y Induction power-saving lighting door bell |
| 01/26/1994 | CN1081272A Piezo horn with carbon inke electrodes |
| 01/20/1994 | DE4323425A1 Piezoelectric horn for use in e.g. smoke detector - has ceramic element with two electrodes formed from conductive, non-metallic fluid pptd. and hardened on ceramic element |
| 01/19/1994 | EP0578787A1 Method and apparatus for adjusting vehicle horns |
| 01/16/1994 | CA2095667A1 Piezo horn with carbon ink electrodes |
| 01/06/1994 | CA2044335A1 Submersible electro-acoustic transducer |
| 12/29/1993 | EP0576216A2 Method of compensating for a change in sound pressure characteristic with temperature of an electoacoustic transducer |
| 12/22/1993 | CN2150611Y Diamond-coating titanium vibration diaphragm |
| 12/16/1993 | DE4233252C1 Acoustic signalling display indicating engine running noise in car - uses signal representing depression of accelerator pedal to control throttle in pneumatic line leading to oscillating membrane |
| 12/14/1993 | US5270680 Loud horn with respiration pipe and in particular for motor vehicles |
| 12/07/1993 | US5268879 Electro-acostic transducers |
| 11/30/1993 | US5266921 Method and apparatus for adjusting vehicle horns |
| 11/23/1993 | US5264656 Electronic sound generating device |
| 11/23/1993 | US5263435 Volute horn and method of manufacturing |
| 11/17/1993 | CN2146767Y Ball-shaped chord sound producer |
| 11/11/1993 | DE4215271A1 Ultrasonic transducer with piezoceramic element on ceramic diaphragm - has electrodes on opposite faces of ceramic block supplied from connection pins via soldered wire and internal metallisation of housing. |
| 11/10/1993 | EP0560811A4 Signalling device |
| 11/10/1993 | CN2146042Y Buzzer |
| 11/09/1993 | US5260681 Paging receiver with resonant box |
| 11/03/1993 | EP0568205A1 Sonar transducer assembly |
| 11/03/1993 | CN2145428Y Magnetic attract type air loudspeaker |
| 11/03/1993 | CN1022615C Electric horn for automobiles |
| 10/28/1993 | WO1993021626A1 Acoustic pressure pulse generator, in particular for healing bone diseases |
| 10/28/1993 | DE4213793A1 Sound prodn. system using natural polysaccharide diaphragm - benefits from electrical feedback control giving positive and negative amplitudes of deflection for spherical acoustic radiation pattern |
| 10/21/1993 | DE3914143A1 Elektroakustischer Wandler mit Richtwirkung und einer dichten, zweiteiligen Schale An electroacoustic transducer with directivity and a dense, two-part shell |
| 10/13/1993 | CN2143805Y Micro electromagnetic music instrument |
| 10/12/1993 | US5251630 Pressure pulse generator having an electromagnetic pressure pulse source |
| 10/05/1993 | US5251188 Elongated-pattern sonic transducer |
| 09/29/1993 | CN1076802A Method and apparatus for adjusting vehicle horns |
| 09/22/1993 | EP0560811A1 Signalling device. |
| 09/08/1993 | CN1076049A Contact type arc-free electric horn circuit |
| 09/07/1993 | US5243152 Sound anti-muffler for a sound generator |
| 09/01/1993 | CN2141587Y Electronic loudspeaker |
| 09/01/1993 | CN2141586Y Single tube type chord sounding device |
| 08/25/1993 | CN2141113Y Contactless electronic vehicle hooter |
| 08/19/1993 | WO1993016464A1 Automotive vehicle tone generator |
| 08/17/1993 | US5237543 Moment bender transducer drive |
| 08/11/1993 | EP0555084A2 Improved moment bender transducer |
| 08/11/1993 | CN2140094Y Sound bicycle bell |
| 08/10/1993 | US5233972 Shockwave source for acoustic shockwaves |
| 08/04/1993 | CN2139730Y Electronic hooter for vehicle or ship |
| 08/03/1993 | CA1321007C Flexcompressional acoustic transducer |
| 07/31/1993 | WO1993015500A1 Method and apparatus for adjusting vehicle horns |
| 07/27/1993 | US5230328 Electromagnetic acoustic pressure pulse source |
| 07/22/1993 | DE4201141A1 Acoustic pressure pulse source e.g. for medical use - has insulating foils adhesively bonded to electric coil |
| 07/22/1993 | DE4201139A1 Electromagnetic acoustic pressure pulse source - has breakdown resistant insulating foils, useful in medical treatment |
| 07/22/1993 | DE4201138A1 Mfr. of coil arrangement for electromagnetic acoustic pressure pulse generator - involves attaching coil to carrier surface by pressing into adhesive film under temp. and then allowing to set |
| 07/21/1993 | CN2138407Y Gloves with music |
| 07/14/1993 | EP0550684A1 Acoustic transmitter. |
| 07/13/1993 | CA1320264C Sonar transducers |
| 07/06/1993 | US5224468 Combination shock wave source |
| 06/30/1993 | CN2137389Y Contact electronic horn for car |
| 06/29/1993 | US5222483 Acoustic pressure pulse generator |
| 06/24/1993 | DE4142455A1 Loudspeaker prodn. for increasing acoustic pressure or giving determined resonant response - comprises bonding metallised piezoceramic disc to metal carrier plate with non-conductive adhesive contg. filler with specified viscosity |
| 06/23/1993 | CN1073569A Sealing of flextensional transmiter |
| 06/23/1993 | CN1073568A Sheel for flextensional transmitter |
| 06/22/1993 | CA1319398C Device used to submit an object to a shock wave |