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)
07/2003
07/23/2003CN1431850A Piston type vibration loudspeaker without dangline edge
07/23/2003CN1115943C Loudspeaker and prepn. method
07/22/2003US6597798 Loudspeaker
07/22/2003US6597796 Microphone with a variable resistance switch
07/17/2003WO2003057375A1 Multi-functional vibrating actuator
07/17/2003WO2002015639A3 Loudspeaker having adjustable motor strength
07/17/2003US20030133587 Speaker driver
07/16/2003CN2561187Y Improvement of horn magnetic piece
07/16/2003CN2561186Y Horn driver
07/15/2003US6594372 Electroacoustic transducer
07/15/2003US6593847 Planar acoustic converting apparatus
07/09/2003CN2560185Y Microphone for regulating sound volume of power amplifier
07/09/2003CN2560184Y Double-magnetic loop structure
07/08/2003US6590994 Linear vibrating device and speaker equipped with the same
07/08/2003US6590993 Panel-shaped loudspeaker
07/08/2003US6590990 Speaker apparatus
07/03/2003US20030123695 Loudspeaker with independent magnetic dampening and excursion control
07/03/2003US20030123694 Loudspeaker with low distortion and high output power
07/03/2003US20030123692 Speaker
07/03/2003US20030123691 Electromagnetic transducer and protable communication device
07/02/2003EP1324633A2 Loudspeaker apparatus
07/02/2003EP1324632A1 Speaker
07/02/2003EP0945043B1 Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer
07/02/2003CN1427650A Optical display loudspeaker
07/02/2003CN1427633A Vibration actuator for pager
07/01/2003US6587571 Speaker
07/01/2003US6587570 Electroacoustic transducer
07/01/2003US6587397 Electroacoustic transducer
06/2003
06/26/2003US20030118207 Loudspeaker apparatus
06/26/2003US20030118204 Wireless microphone
06/25/2003EP1322137A2 Portable speaker systems and applications thereof
06/25/2003EP1322136A2 Flat panel sound radiator with supported exciter and compliant surround
06/25/2003CN2558180Y Double symmetrical magnetic circuit double-voice coil double-centring support piece loudspeaker
06/25/2003CN1426668A Single and planar magnetic speaker
06/19/2003US20030112994 Electroacoustic transducer
06/19/2003US20030112985 Electroacoustic converter for wide-band loudspeakers and headphones
06/18/2003EP1319321A2 Loudspeaker driver
06/18/2003EP1216601B1 Diaphragm transducer
06/18/2003CN2556884Y Ear-hung hold-free earphone
06/18/2003CN1425264A Bone conduction transducer and bone conduction speaker headset therewith
06/18/2003CN1424838A Electroacustic transducer
06/17/2003US6580803 Structure for changing sound quality of speaker
06/17/2003US6580799 Keyboard comprising a loudspeaker
06/17/2003US6578661 Speaker apparatus
06/12/2003US20030108218 Spring suspension speaker
06/05/2003US20030103643 Amplifier with improved structure
06/05/2003US20030103642 Rectangular transducer for panel-form loudspeaker
06/05/2003US20030102739 Vibrating device for transmitting information
06/04/2003EP1066736B1 Vibration actuator having magnetic circuit elastically supported by a spiral damper with increased compliance
05/2003
05/28/2003EP1315400A2 Speaker and method for manufacturing the speaker
05/28/2003EP1314336A2 Electromechanic transducer, especially for mounting in the intake pipe of an internal combustion engine
05/28/2003EP0929890B1 Compact horn speaker
05/28/2003CN2553578Y Combination structure of loudspeaker and volume control switch
05/28/2003CN1421114A Electroacoustic transducer having diaphragm with coil mounting projections and interposed stabilizing walls
05/28/2003CN1420710A Composite receiver and loudspeaker
05/28/2003CN1420709A Microphone, diaphragm and method for making diaphragm
05/28/2003CN1420636A Radio communication terminal assembly constituting antenna, loudspeaker and bell
05/28/2003CN1110225C Terminal connection method of coil and terminal connection structure of coil
05/27/2003US6570995 Speaker device
05/27/2003US6570994 Field layer speaker for consumer products
05/27/2003US6570993 Electric-mechanical-acoustic converter and method for producing the same
05/27/2003US6568502 Sounder, speaker and sound head using the sounder
05/22/2003WO2003043375A1 Speaker
05/22/2003WO2003042971A1 Method and device arrangement to improve quality of sound in an audio system
05/22/2003WO2002085064A3 Acoustic radiator with a baffle of a diameter at least as large as the opening of the speaker enclosure to which it is mounted
05/22/2003US20030095680 Combined receiver and speaker
05/22/2003US20030093891 Method for manufacturing speaker
05/21/2003CN2552280Y Double-pushing type magnetic circuit device for loadspeaker
05/21/2003CN2552279Y Loadspeaker
05/21/2003CN2552278Y Short circuit prevention terminal plate for loadspeaker
05/20/2003US6567528 Offset apex spider
05/15/2003WO2003041449A1 Loudspeaker
05/15/2003US20030091212 On-vehicle speaker
05/15/2003US20030091208 Microphone with a variable resistance switch
05/15/2003US20030091202 Knockdown speaker
05/14/2003EP1234377B1 Power booster amplifier
05/14/2003CN1418450A Compound driver for acoustical applications
05/14/2003CN1418449A 扬声器 Speaker
05/14/2003CN1108727C Liquid fixed electrode for condenser loudspeaker
05/13/2003US6563933 Electromagnetic transducer for generating sound in hearing aids, particularly electronic hearing aids
05/13/2003US6563932 Magnet system for loudspeakers
05/08/2003WO2003039192A1 Improved moving coil transducer
05/08/2003WO2002023944A3 Acoustic playback device
05/08/2003US20030086576 Position sensor for a loudspeaker
05/07/2003EP0753238B1 Method of manufacturing a loudspeaker spider
05/07/2003CN1416295A Loudspeaker and method of mfg. such loudspeaker
05/07/2003CN1108085C Ring conductive diaphragm, and injection moulded and printed electrode constituted capacitor loudspeaker
05/07/2003CN1108084C Constant power driving method for loudspeaker
05/06/2003US6560347 Multi actuator
05/02/2003EP1305979A1 Vibrator for boneconducted hearing aids
05/02/2003EP1305977A2 A microphone assembly
05/01/2003WO2003037036A1 Sound effect by variable electromagnetic voltage
05/01/2003US20030081808 Loudspeaker having cooling system
05/01/2003US20030081807 Speaker and method for manufacturing the speaker
05/01/2003US20030081800 Flat panel sound radiator with supported exciter and compliant surround
05/01/2003US20030079936 Loudspeaker damper and loudspeaker
04/2003
04/30/2003CN2548381Y Cylindrical acoustic horn
04/30/2003CN2548379Y Hand-free apparatus pivoting mechanism
04/30/2003CN1414814A Bidirectional loudspeake of mobile phone
04/30/2003CA2407160A1 Flat panel sound radiator with supported exciter and compliant surround
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