Class / Patent application number | Description | Number of patent applications / Date published |
381399000 | Conductive diaphragm (e.g., ribbon) | 10 |
20080273739 | Ribbon transducer with improved excursion and dispersion characteristics - “Ribbon tranducer with improved excursion and dispersion characteristics” | 11-06-2008 |
20090097693 | Planar-magnetic speakers with secondary magnetic structure - A planar magnetic transducer having enhanced magnetic structures which increases performance over a signal-ended device but mitigates some of the drawback of double ended devices, including a supporting structure, a diaphragm incorporating a coil conductor at least primary magnetic structure, and a secondary magnetic structure can be added, including mitigation of high frequency resonance and attenuation by providing a more open architecture, including spacing the magnets wider apart, configuring the inter-magnet spaces to provide better acoustic performance, using high-energy magnets, which magnets can be shaped to form at least a part of the shaped inter-magnet space. | 04-16-2009 |
20100177926 | Capacitive Electroacoustic Transducer and Microphone - There is provided a capacitive electro-acoustic transducer comprising an active diaphragm ( | 07-15-2010 |
20100316249 | SPEAKER - The invention provides a speaker in which a damper is effectively added without impairing the thinness of the speaker, and which, although the speaker is thin and small, exhibits high withstand input and high output power performances. A damper ( | 12-16-2010 |
20110091064 | Ribbon transducer - A ribbon transducer ( | 04-21-2011 |
20110158459 | LOUDSPEAKER AND ELECTRONIC DEVICE INCORPORATING THE SAME - A loudspeaker includes a frame, a yoke physically associated with the frame and a sheet attached to an outer surface of the yoke. The sheet is made of an electrically conductive material. An electronic device incorporating the loudspeaker is also provided. | 06-30-2011 |
20110158460 | COMPOSITE ACOUSTIC TRANSDUCERS - A composite membrane acoustic transducer structure comprising a magnet assembly is arranged adjacent the composite membrane material. The magnet assembly is arranged to produce a flux field. A first layer of thin, elongate composite membrane material is held under tension. A second conductive layer is attached to the first layer of composite membrane material wherein the first and second layers of membrane material are arranged adjacent, generally parallel and offset from the magnet assembly. The assembly is arranged to produce the flux field through at least part of the first layer and the second layer. | 06-30-2011 |
20120106773 | SPEAKER DEVICE AND METHOD FOR FORMING SPEAKER DEVICE - A speaker device which can form an ideal cylindrical wave as sound traveling nondirectionally in a horizontal direction toward a listener. A vibration transmitting member is supported at one end thereof to the vertex of a conical diaphragm, and vibration generated by a vibrating element according to an acoustic signal is applied to the other end of the vibration transmitting member. The angle θ between the perpendicular dropped from the vertex of the conical diaphragm to the base thereof and the side surface of the conical diaphragm is set according to the sound velocity in the air and the sound velocity in the conical diaphragm so that the distance traveled by a sound radiated from the vertex is equal to the distance traveled by a sound radiated from an end of the side surface of the conical diaphragm farthest from the vertex. | 05-03-2012 |
20150350791 | VIBRATING ELEMENT - A vibrating element including a diaphragm, a voice coil and a stiffening layer is provided. The diaphragm has a first surface and a second surface opposite to each other. The first surface includes a first conductive region and a second conductive region. The voice coil is disposed on the first surface. Two ends of the voice coil are electrically connected to the first conductive region and the second conductive region. The stiffening layer is disposed on the diaphragm. The diaphragm has a center region, which is enclosed and circled by the voice coil and includes an area of the diaphragm above the voice coil. The region outside the center region includes an inner circled zone and an outer circled zone surrounding the inner circled zone. At least one end of the voice coil is located in the inner circled zone and the stiffening layer covers the inner circled zone. | 12-03-2015 |
20170238098 | DIAPHRAGM OF SOUNDING APPARATUS | 08-17-2017 |