Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 7 - Diaphragms for electromechanical transducers; Cones
Patents for H04R 7 - Diaphragms for electromechanical transducers; Cones (6,555)
01/2000
01/13/2000WO2000002417A1 Resonant panel-form loudspeaker
01/13/2000WO2000002415A1 Loudspeaker
01/13/2000WO2000001264A1 Headwear
01/13/2000CA2336271A1 Resonant panel-form loudspeaker
01/05/2000EP0969691A1 Speaker and electronic apparatus using speaker
01/05/2000EP0968099A1 Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
12/1999
12/29/1999WO1999067975A1 Telescoping loudspeaker having multiple coaxial voice coils
12/29/1999WO1999067974A1 Loudspeakers
12/29/1999EP0966862A2 Loudspeaker and method for producing the same
12/29/1999CA2336072A1 Loudspeakers
12/23/1999WO1999066763A1 Device having two coaxially disposed bodies which are movable relative to one another along a translation axis
12/22/1999EP0965245A1 Acoustic device
12/21/1999US6003766 Vending machine
12/16/1999WO1999065274A1 Resonant panel-form acoustic devices
12/16/1999WO1999065273A1 Panel loudspeakers
12/16/1999WO1999065272A1 Method of producing speaker diaphragm and speaker diaphragm formed by this method and speaker using this
12/16/1999DE19923288A1 Loudspeaker with hemispherical radiator for propagating uniform sound waves
12/16/1999DE19825866A1 Plattenlautsprecher Panel loudspeaker
12/16/1999CA2334239A1 Resonant panel-form acoustic devices
12/08/1999EP0963136A2 Speaker
12/07/1999US5999633 Speaker damper
12/07/1999US5998309 Improved color uniformity; the dyes are thermally stable up to or above the glass transition temperature of the m-aramid polymer from which the fibrid is formed and wherein the short fibers are p-aramid or m-aramid.
12/02/1999WO1999062295A1 Acoustic panel
12/02/1999WO1999062294A1 Panel-form loudspeaker
12/02/1999WO1999046927A3 Method and apparatus for conveying audiovisual information
12/02/1999CA2332824A1 Panel-form loudspeaker
11/1999
11/25/1999WO1999060820A1 Driver for a flat acoustic panel
11/25/1999WO1999060819A1 Sound reproduction device working according to the bending wave principle
11/25/1999WO1999060818A1 Panel loudspeaker
11/25/1999WO1999060817A1 Device for dynamic excitation of panel loudspeakers
11/25/1999WO1999060444A1 Projection screen
11/24/1999CN1236285A Loudspeaker
11/23/1999US5991425 Low reflection/low diffraction treatment for loudspeaker transducer diaphragm
11/18/1999DE19821862A1 Flat panel loudspeaker
11/18/1999DE19821861A1 Device for dynamically exciting flat panel loudspeaker
11/18/1999DE19821860A1 Driver for flat panel loudspeaker
11/18/1999DE19821855A1 Flat panel loudspeaker
11/18/1999DE19821624A1 Projection screen with sound radiating segments
11/17/1999EP0956736A2 Electro-dynamic exciter
11/17/1999CN1235504A Speaker
11/10/1999EP0847661B1 Acoustic device
11/10/1999CN1234716A Loudspeaker and loudspeaker apparatus
11/04/1999WO1999056498A1 Acoustic element
11/04/1999WO1999056497A1 Method and apparatus for locating bending wave transducer means
11/04/1999CA2330377A1 Acoustic element
11/04/1999CA2330303A1 Method and apparatus for locating bending wave transducer means
11/03/1999EP0953275A1 Electroacoustic transducers comprising vibrating panels
10/1999
10/27/1999EP0951801A1 Loudspeakers
10/27/1999CN2346131Y Electret anti-noise acoustical pick-up
10/27/1999CN2346130Y Dome loudspeaker
10/19/1999US5969298 Compression driver
10/19/1999US5966797 Method of manufacturing a damper for a loudspeaker
10/14/1999WO1999052324A1 Acoustic device relying on bending wave action
10/14/1999WO1999052322A1 Acoustic device
10/14/1999CA2326193A1 Acoustic device
10/14/1999CA2326161A1 Acoustic device relying on bending wave action
10/12/1999US5965072 Speaker cones
10/06/1999CN2342538Y High damping loudspeaker vibration disphragm
09/1999
09/30/1999WO1999049699A1 Speaker and damper therefor
09/29/1999EP0945042A1 Panel-form loudspeaker
09/22/1999EP0944292A2 Loadspeaker diaphram of an injection foam molded body
09/21/1999US5956293 Flexural plate sound transducer having low resonant frequency
09/16/1999WO1999046927A2 Method and apparatus for conveying audiovisual information
09/15/1999EP0942626A2 Loudspeaker
09/15/1999EP0942625A2 Method for fabricating diaphragm-edge integral molding for speakers
09/15/1999CN2338932Y Vibration diaphragm for loudspeaker
09/14/1999US5953438 Planar electromagnetic transducer
09/07/1999US5949898 Surround for a loudspeaker
09/01/1999CN1227460A Structurally improved loudspeaker paper cone
08/1999
08/19/1999WO1999041941A1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer
08/19/1999WO1999041940A1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer
08/19/1999WO1999041939A1 Acoustic device comprising a panel member relying on bending wave action
08/19/1999CA2317550A1 Acoustic device comprising a panel member relying on bending wave action
08/18/1999EP0936842A1 Piezo speaker for improved passenger cabin audio systems
08/18/1999EP0936838A2 Device for reproducing information
08/18/1999EP0872158A4 Piezoelectric transducers
08/18/1999EP0872157A4 Piezo speaker for improved passenger cabin audio systems
08/12/1999DE19804737A1 Loudspeaker for cars
08/10/1999US5937075 Loudspeaker
08/03/1999US5933512 Double cone-type loudspeaker
08/03/1999US5933508 Horn speaker system
07/1999
07/22/1999WO1999037121A1 Active acoustic devices comprising panel members
07/22/1999WO1999037118A1 Speaker and electronic apparatus using speaker
07/22/1999WO1999025149A3 Moving-coil loudspeaker
07/22/1999CA2318292A1 Active acoustic devices comprising panel members
07/21/1999CN2330133Y Metal magnetic conduction vibrating diaphragm sounder
07/07/1999EP0927987A2 Sound transducer system
07/07/1999CN1222049A Dome speaker
07/07/1999CN1222048A Speaker
07/06/1999US5920040 Speaker diaphragm
06/1999
06/30/1999EP0926924A2 Speaker
06/23/1999EP0924960A2 Suspension for sound reproduction arrangements based on the bending wave principle
06/23/1999EP0924959A2 Sound reproduction arrangement
06/23/1999EP0924957A2 Connecting contacts
06/23/1999CN2325946Y Composite cones
06/16/1999EP0921864A1 Flexural plate sound transducer having low resonant frequency
06/16/1999EP0729628A4 Improved planar diaphragm loudspeaker
06/15/1999US5912863 Electro-acoustic transducer
06/09/1999EP0920785A2 Loudspeaker drive units
06/09/1999CN2323542Y Concave-convex cone disphragm
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