Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type
Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486)
08/1999
08/18/1999CN2334128Y Ultra-thin plate loud-speaker
08/17/1999US5940522 Speaker with passive voice coil cooling
08/12/1999WO1999039843A1 Electromagnetic actuator and structure for mounting the same
08/12/1999DE19805508A1 Loudspeaker with active sound surface for transmitting sound into a space bounding on the sound surface
08/11/1999CN2333135Y Loudspeaker
08/10/1999US5937076 Magnetic drive apparatus and method for manufacturing coil that forms the apparatus
08/04/1999CN2332137Y Loudspeaker
08/04/1999CN1224745A Curable resin composition, adhesive composition, bonded product, speaker and bonding method
08/04/1999CN1044546C Loudspeaker and manufacturing method and apparatus
08/03/1999US5933512 Double cone-type loudspeaker
08/03/1999US5933508 Horn speaker system
08/03/1999CA2071927C Coil assemblies
07/1999
07/22/1999WO1999037122A1 Flush mounted uni-directional microphone
07/22/1999WO1999025149A3 Moving-coil loudspeaker
07/21/1999EP0929890A2 Compact horn speaker
07/15/1999WO1999035204A1 Synthetic chloroprene rubber adhesive composition and process for producing speaker by using the same
07/14/1999EP0812521A4 Audio voice coil adaptor ring
07/08/1999DE19740467A1 Flat loudspeaker with internal magnet system
07/07/1999EP0927987A2 Sound transducer system
07/07/1999CN2328143Y Small wide band speaker
07/07/1999CN1222049A Dome speaker
07/06/1999US5920638 Structure of speaker
06/1999
06/30/1999CN2327141Y Internal partial-tone full-range loudspeaker
06/29/1999US5917923 Loudspeaker system
06/24/1999WO1999031932A1 Mechanical acoustic crossover network and transducer therefor
06/24/1999WO1999031931A1 Loudspeaker
06/23/1999EP0924959A2 Sound reproduction arrangement
06/23/1999CN2325947Y Loud-speaker
06/17/1999WO1999030533A1 Electrodynamic acoustic transducer with reduced equivalent inductance of the moving parts
06/16/1999CN2324741Y Double-voice coil electric loudspeaker
06/16/1999CN1219835A Permanent magnet assembly
06/16/1999CN1219834A Loudspeaker
06/15/1999US5912863 Electro-acoustic transducer
06/09/1999EP0921707A2 Permanent magnet assembly
06/09/1999CN2323544Y Magnetic suspension centering support piece
06/09/1999CN2323543Y Bidirectional loudspeaker
06/03/1999WO1999014980A3 A loudspeaker with lead wires extending through the magnetic assembly and integrated with an amplifier
06/01/1999US5909499 Speaker with magnetic structure for damping coil displacement
06/01/1999US5909015 Self-cooled loudspeaker
06/01/1999US5909014 Low frequency equaphase surround loudspeaker
05/1999
05/27/1999WO1999026452A1 Loudspeaker
05/27/1999WO1999026451A1 Thin electromagnetic transducer
05/27/1999DE19747562A1 Verfahren und Anordnung zum Steuern der Ausbreitung von Magnetfeldern durch elektrodynamische/-magnetische Wandler, insbesondere in Telekommunikationsgeräten Method and apparatus for controlling the propagation of magnetic fields by electrodynamic / -magnetic converter, particularly in telecommunications equipment
05/26/1999EP0788722B1 Apparatus and method of enhancing audio signals
05/26/1999CN1217865A Photoelectric transducer including enclosuring element for enclosuring rear volume of transducer
05/26/1999CN1217863A Photoelectric transducer including elastic contact formed with at least one bended part
05/20/1999WO1999025149A2 Moving-coil loudspeaker
05/20/1999DE19850664A1 Dome loudspeaker for audio system
05/20/1999CA2309209A1 Moving-coil loudspeaker
05/19/1999CN2319988Y Large power wide frequency band airflow loudspeaker
05/19/1999CN1216889A Speaker system
05/18/1999US5905805 Electrodynamic transducer
05/14/1999WO1999022882A1 Electric-mechanical-acoustic transducer and a method of manufacturing the same
05/11/1999US5903853 Radio transceiver including noise suppressor
05/11/1999US5903656 Monitor has tubular loudspeaker reducing CRT's mask vibrations
05/11/1999US5903076 Vibration actuator for pager
05/11/1999US5903068 Electroacoustic transducer
05/06/1999WO1999022550A1 Method and system for controlling the propagation of magnetic fields by electrodynamic/-magnetic transducers, especially in telecommunications devices
05/06/1999EP0914020A2 Loudspeaker
05/06/1999DE19843714A1 Loudspeaker
05/06/1999CA2307668A1 Method and system for controlling the propagation of magnetic fields by electrodynamic/-magnetic transducers, especially in telecommunications devices
04/1999
04/29/1999WO1999021397A1 Resonant mode panel-loudspeakers
04/29/1999WO1999008474A3 Cap and center pole apparatus and method of coupling
04/29/1999CA2303789A1 Resonant mode panel-loudspeakers
04/28/1999EP0912072A1 Concentric tube suspension system for loudspeakers
04/28/1999CN2316788Y Integrated forming structure for loadspeaker body and voice coil
04/27/1999US5898786 Loudspeakers
04/27/1999US5898244 Dual-directional field coil actuator
04/21/1999CN2315749Y Power-operated loudspeaker
04/15/1999WO1999018755A1 An improved low frequency transducer enclosure
04/15/1999DE19745337A1 Surface cooling system
04/14/1999EP0909110A2 Method and arrangement for improving leak tolerance of an earpiece
04/14/1999EP0909077A2 Method and arrangement for improving leak tolerance of an earpiece in a radio device
04/14/1999EP0847676B1 Inertial vibration transducers
04/14/1999CN2314539Y Speaker
04/13/1999US5894524 High power tweeter
04/13/1999US5894263 Vibration generating apparatus
04/08/1999WO1999006990A3 Compact horn speaker
04/06/1999US5892185 Speaker unit and a method for manufacturing the same
04/06/1999US5892184 Passive radiator and system comprising the passive radiator
04/06/1999CA2115075C Voice coil actuator ii
03/1999
03/25/1999WO1999014980A2 A loudspeaker with lead wires extending through the magnetic assembly and integrated with an amplifier
03/24/1999EP0903961A2 Inductive braking in a dual coil speaker driver unit
03/24/1999CN2311906Y One chip processor controlling sounding frequency stabilization electric horn
03/18/1999WO1999013684A1 Vibration exciter
03/18/1999CA2301270A1 Vibration exciter
03/17/1999CN1211380A Loudspeaker unit
03/16/1999US5883967 Slotted diaphragm loudspeaker
03/11/1999WO1999012387A1 Loudspeakers
03/11/1999WO1998053638A3 Acoustic apparatus comprising an array of loudspeakers
03/11/1999CA2297041A1 Loudspeakers
03/10/1999EP0847675B1 Vibration transducers
03/10/1999EP0847662B1 Loudspeakers comprising panel-form acoustic radiating elements
03/03/1999CN2309679Y Suspended edge body of loudspeaker
03/02/1999US5878150 Damper for a loudspeaker and a method for producing the same
03/02/1999US5878149 Loudspeaker having a yoke, magnet, cylindrical throat, and spacer plate configuration
03/02/1999US5878148 Compression driver
02/1999
02/25/1999WO1999009785A1 Telephone with a receiver arousing bone-conduction and air-conduction hearing
02/25/1999CA2297774A1 Telephone with a receiver arousing bone-conduction and air-conduction hearing
02/24/1999EP0898287A2 Hard magnetic alloy having supercooled liquid region, sintered or cast product thereof and applications
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