Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486)
09/1995
09/20/1995CN2208303Y Wide band speaker
09/19/1995US5452366 Loudspeaker
09/14/1995WO1995024815A1 Electromagnetic loudspeaker
08/1995
08/30/1995EP0669785A1 Electroacoustic transducer and method of winding coil therein
08/29/1995US5446797 Audio transducer with etched voice coil
08/23/1995CN1107270A Double-brake water wave type resonant plate
08/17/1995WO1995022234A1 An electrodynamic transducer
08/17/1995CA2182610A1 An electrodynamic transducer
08/08/1995US5440630 Telephone receiver with electrostatic discharge prevention
08/02/1995EP0496802B1 Improvements in or relating to loudspeakers
07/1995
07/19/1995EP0663136A1 Diffusing volume electroacoustic transducer.
07/19/1995EP0663116A1 Electromagnetic transducer
07/18/1995US5434458 Voice coil actuator
07/18/1995CA2019541C Ribbon transducers
07/18/1995CA2019540C Ribbon transducers
07/12/1995EP0614600B1 Loudspeaker
07/12/1995CN2203517Y Coil-moving speaker with full-symmetry structure
07/11/1995US5432758 Electroacoustic transducer
07/05/1995CN2203006Y Structure-improved receiver
07/04/1995US5430805 Planar electromagnetic transducer
07/04/1995US5430804 Loudspeaker with a coated voice coil
06/1995
06/20/1995US5426707 Electrodynamic loudspeaker with cooling arrangement
06/13/1995US5424592 Electromagnetic transducer
06/13/1995US5424496 Electromagnetic converter
06/07/1995EP0422214B1 Self-cooled loudspeaker
06/07/1995CN2200268Y Mouthpiece of microphone
06/01/1995WO1995015068A1 High gain acoustic transducer
05/1995
05/31/1995CN1103229A Loudspeaker and manufacturing method
05/26/1995WO1995014363A1 Electromagnetic acoustic transducers
05/23/1995US5418860 Voice coil excursion and amplitude gain control device
05/23/1995US5418336 Sound output device
05/17/1995EP0616751A4 Voice coil actuator.
05/17/1995CN2197783Y Transistor contactless speaker
05/16/1995CA1335611C Electro acoustic transducer and loudspeaker
05/11/1995DE4438330A1 Electroacoustic transducer
05/03/1995EP0650656A1 Loudspeaker.
04/1995
04/27/1995WO1995011579A1 Device and method for assembly of radial magnet voice coil actuators
04/27/1995CA2172727A1 Device and method for assembly of radial magnet voice coil actuators
04/19/1995CN2195173Y Electric horn with long life contact
04/18/1995US5408533 Motional feedback speaker system with radially polarized magnet and underhung voice-coil
04/18/1995CA2034898C Receiver
04/18/1995CA1335308C Speaker
04/13/1995WO1995010166A1 Variable geometry electromagnetic transducer
04/06/1995DE4434719A1 Loudspeaker
03/1995
03/28/1995US5402503 Light-weight conical loudspeaker
03/28/1995US5401907 Soldering terminal plate for loudspeakers
03/22/1995EP0644706A1 Horn speaker system
03/21/1995CA2060172C Body sense speaker
03/14/1995US5398288 Coaxial loudspeaker system
03/09/1995DE4329982A1 Electrodynamic sound transducer
03/08/1995EP0642291A2 Loudspeaker diaphragm attaching
03/07/1995US5396563 Earphone
02/1995
02/15/1995CN1027669C Ball-shaped oscillating membrane loudspeaker
02/14/1995US5390257 Light-weight speaker system
02/14/1995US5388992 Method and apparatus for tactile transduction of acoustic signals from television receivers
02/01/1995CN2188836Y Multi-purpose loudspeaker
01/1995
01/24/1995US5383267 Automatic manufacturing apparatus
01/19/1995WO1995002275A1 Electromagnetic transducer
01/11/1995EP0541646B1 Panel-form loudspeaker
01/10/1995US5381483 Minimal inductance electrodynamic transducer
01/04/1995EP0632676A1 Loudspeaker and manufacturing method
01/04/1995CN2186977Y Simultaneous homologous high-low sound speaker
12/1994
12/14/1994EP0400048B1 Improved audio transducer with controlled flexibility diaphragm
12/13/1994US5373565 Spacer for coaxial loudspeakers
12/06/1994US5371806 Loudspeaker
12/06/1994US5371805 Speaker and speaker system employing the same
11/1994
11/30/1994CN2184301Y Numerical photo-electric sound pick-up
11/29/1994US5369712 Speaker
11/24/1994WO1994027415A1 Voice coil excursion and amplitude gain control device
11/24/1994WO1994027413A1 Loudspeaker with short circuit rings at the voice coil
11/17/1994DE4413945A1 Loudspeaker
11/09/1994EP0624049A2 A loudspeaker apparatus
11/09/1994EP0624048A1 Structure for supporting a vibrating system of a loudspeaker
11/02/1994EP0622971A1 Loudspeaker structure and method of assembling loudspeaker
11/02/1994EP0622970A1 Voice coil and loudspeaker structure
11/01/1994US5361306 Apparatus and methods for enhancing an electronic audio signal
11/01/1994US5361304 Headphone assemblies
10/1994
10/26/1994CN2181154Y High-effect large power low-frequency loudspeaker
10/25/1994CA2086557C Loudspeaker suspension
10/18/1994US5357587 Distortion reduction in loudspeakers
10/18/1994US5357586 Flow-through air-cooled loudspeaker system
10/12/1994EP0619688A1 Speaker and its manufacturing method
10/05/1994EP0618752A1 Loudspeaker structure
10/05/1994CN2178974Y New magnetic circuit structure moving coil type loudspeaker
09/1994
09/28/1994EP0616751A1 Voice coil actuator
09/27/1994US5351220 Moving-coil electrodynamic electroacoustical transducer
09/21/1994EP0616483A1 Electroacoustic transducer having a cover part
09/14/1994EP0615398A1 Electroacoustic transducer having a mask
09/14/1994EP0615397A2 Noise suppression circuit for radio transceiver microphone
09/14/1994EP0614600A1 Loudspeaker.
09/12/1994CA2118767A1 Radio transceiver
09/07/1994EP0614327A1 Electroacoustic transducer having a partition wall and a mask wall
09/07/1994CN2176624Y Video-audio coaxial speaker
08/1994
08/31/1994EP0613322A2 Loudspeaker
08/30/1994US5343533 Transducer flux optimization
08/18/1994WO1994018806A1 Double ended field coil actuator
08/18/1994CA2155656A1 Double ended field coil actuator
08/17/1994EP0610769A2 Loudspeaker
08/17/1994CN2174825Y Combined loudspeaker
08/10/1994EP0610001A2 Loudspeaker