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)
04/2003
04/24/2003US20030076969 Two-way speaker for mobile phones
04/24/2003US20030075381 Vehicle speaker
04/23/2003EP1304903A2 Electro-acoustic transducer and electronic device
04/23/2003CN1413062A Film, planar sound converter and planar film
04/23/2003CN1413061A Sheet vibration exciter
04/23/2003CN1106786C 扬声器装置 Speaker system
04/22/2003US6553126 Micro speaker
04/22/2003US6553125 Multiple-function convertor for converting electric signals to vibration of elements of a portable electronic instrument
04/17/2003WO2003032505A2 Electroacoustic transducer having a moving coil and having movable holding elements for the connecting leads of the moving coil
04/17/2003US20030072462 Loudspeaker with large displacement motional feedback
04/17/2003US20030070869 Low distortion loudspeaker cone suspension
04/16/2003CN2545783Y 发光喇叭 Luminous horn
04/16/2003CN1411313A Electroacoustic converter and electronic apparatus
04/16/2003CN1411308A Composite loudspeaker for portable communication apparatus
04/16/2003CA2408340A1 Position sensor for a loudspeaker
04/16/2003CA2408045A1 Loudspeaker with large displacement motional feedback
04/15/2003US6549637 Loudspeaker with differential flow vent means
04/15/2003US6549632 Microphone
04/10/2003US20030068987 Component for a wireless communication terminal constituting an antenna, loudspeaker and ringer
04/10/2003US20030068065 Electroacoustic transducer having a moving coil and having movable holding elements for the connecting leads of the moving coil
04/10/2003US20030068063 Electro-acoustic transducer and electronic device
04/10/2003US20030068054 Diaphragm, flat-type acoustic transducer, and flat-type diaphragm
04/09/2003EP1125473B1 Acoustic device according to bending wave principle
04/09/2003CN1409579A Energy saving acoustic system with low cost, high electroacoustic conversion efficiency and constant playback sound pressure
04/09/2003CN1409466A Electromagnetic actuator
04/08/2003US6546107 Method and apparatus for controlling the propagation of magnetic fields by electrodynamic/magnetic transducers in telecommunication devices
04/03/2003WO2003028404A1 Speaker, speaker module, and electronic equipment using the speaker module
04/03/2003US20030062978 Electromagnetic actuator
04/02/2003EP1297904A1 Electromagnetic induction type actuator and portable communications device
04/02/2003EP1297720A2 Electroacoustic transducer with replaceable diaphragm
04/02/2003CN2543313Y Electric loudspeaker
04/02/2003CN2543312Y Loudspeaker and its hanging edge
04/01/2003US6542617 Speaker
03/2003
03/27/2003WO2002037644A3 Electromagnetic motor with flux stabilization ring, saturation tips, and radiator
03/27/2003US20030059080 Speaker
03/27/2003US20030059079 Compound speaker for a portable communication device
03/26/2003EP1296535A2 Compound speaker for a portable communication device
03/26/2003CN1405954A Iron-alloy band material for voice-coil motor magnetic circuit
03/25/2003US6537234 Vibration transducer
03/20/2003WO2003024151A1 An electro-acoustic transducer with two diaphragms
03/20/2003US20030053651 Speaker
03/20/2003US20030052355 Integrated sound transmitter and receiver, and corresponding method for making same
03/20/2003US20030051940 Loudspeaker drive units with flat surround
03/19/2003EP1294051A1 Component for radio communication terminal constituting an antenna, a loudspeaker and a ringing device
03/19/2003EP1293105A2 Electroacoustic transducer being acoustical tight in the area of its air gap for its moving coil
03/19/2003CN1404341A Small size loudspeaker for mobile telephone
03/19/2003CN1404340A Damper for loudspeaker
03/18/2003US6535613 Air flow control device for loudspeaker
03/13/2003WO2002045460A3 Loudspeakers
03/13/2003US20030048920 Electro-acoustic transducer with two diaphragms
03/13/2003US20030048913 Bone-conduction transducer and bone-conduction speaker headset therewith
03/12/2003EP1289866A1 Method and device for picking up stacks of blanks
03/12/2003CN1402953A Apparatus for on-ear operation and off-ear operation with two sound reproduction transducers
03/12/2003CN1402591A Voice modulating talking system and headphone therefor
03/12/2003CN1402590A Transparent flat loudspeaker and mfg. method thereof
03/12/2003CN1402503A Electroacoustic converter frame and mfg. method thereof
03/06/2003WO2003019979A1 Structure for securing vibration exciter and member for securing vibration exciter
03/06/2003WO2002019758A3 Electromechanic transducer, especially for mounting in the intake pipe of an internal combustion engine
03/06/2003US20030044041 Low cost motor design for rare-earth-magnet loudspeakers
03/06/2003US20030044040 Compact speaker for portable phone
03/06/2003US20030044031 Multi-function actuator
03/05/2003EP1078552B1 Device for dynamic excitation of panel loudspeakers
03/05/2003EP1031256B1 Linear loudspeaker
03/05/2003CN2539374Y Compound coaxial magnetic return horn structure
03/05/2003CN2539371Y Hand-free telephone reiver
03/05/2003CN2539370Y Self-cooled loudspeaker
03/05/2003CN2539369Y Improvement of loudspeaker structure
03/05/2003CN1400813A Electroacoustic converter
03/05/2003CN1102618C Wax, copper foil flexible wire wetted with wax for speakers and speakers
03/04/2003US6529611 Multifunction acoustic device
03/04/2003US6529107 Speaker comprising ring magnet
02/2003
02/27/2003WO2003001885A3 Multimedia and entertainment system for an automobile
02/26/2003CN2538110Y Hand-free earphone device for preventing electromagnetic wave interference
02/26/2003CN2538109Y External micro phone of telephone
02/26/2003CN1399496A Loudspeaker driver with flat wrapping layer
02/25/2003US6526152 Electroacoustic transducer having a moving coil and elastic holding elements for the connecting leads of the moving coil
02/25/2003US6526151 High stability loudspeaker
02/20/2003WO2003015462A2 Loudspeaker with a three-dimensional diaphragm
02/20/2003US20030036364 Multi-functional actuator
02/20/2003US20030034705 Electromagnetic vibrator
02/20/2003US20030034091 Iron alloy strip for voice coil motor magnetic circuits
02/19/2003CN2537184Y Pick-up of microphone
02/13/2003WO2003013182A1 Sound reproducing system using sound pressure
02/13/2003WO2001084883A3 Planar speaker wiring layout
02/13/2003US20030031338 Speaker and magnetic circuit used for the speaker
02/13/2003US20030031337 Loudspeaker with a three-dimensional diaphragm
02/13/2003DE20217450U1 Moving coil-loudspeaker coil design, has multi-layer winding positionally distributed into a number of coiling units
02/13/2003CA2456032A1 Sound reproducing system using sound pressure
02/12/2003EP1283276A1 Iron alloy strip for voice coil motor magnetic circuits
02/12/2003EP1283002A2 Loudspeaker having an acoustic panel and an electrical driver
02/12/2003CN2535993Y Double-sided electroacoustomagnetic circuit structure
02/12/2003CN2535992Y Double-wided electroacoustomagnetic circuit structure
02/11/2003US6519349 Loudspeaker
02/11/2003US6519347 Panel-form loudspeakers
02/06/2003WO2003010998A1 Magnetic shielding of loud speaker sensing coil
02/06/2003WO2003010997A1 Flat speaker of full-face driving
02/06/2003US20030024763 Electroacoustic transducer frame and method of making the same
02/05/2003EP1282337A2 Electroacoustic transducer
02/05/2003CN1395812A Method for manufacturing speaker
02/04/2003US6516072 Loudspeaker
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