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| Number | Title | Issue Date |
| 8068634 | Diaphragm and speaker using same A first enforcing rib, a second enforcing rib, and a third enforcing rib are integrally formed at least at one of a front side and a back side of a diaphragm, the first enforcing rib being formed as an aggregate of a plurality of hexagons, enhancing strength and ach... | 11/29/2011 |
| 7428946 | Suspension and electro-acoustic transducer using the suspension A suspension with a plurality of roll sections each of which has a semi-cylindrical shape from a cross-section view. The roll sections are disposed side by side based on a straight line connecting two points on an inner periphery or an outer periphery. The roll sect... | 09/30/2008 |
| 7360626 | Audio speaker with wobble free voice coil movement A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed... | 04/22/2008 |
| 7325650 | Speaker A speaker according to the present invention is equipped with a diaphragm having a central portion of a dome shape and an edge portion formed on an outer periphery thereof. Further, the speaker has also a frame attached with an outermost fringe of the edge portion a... | 02/05/2008 |
| 7225895 | Audio speaker with wobble free voice coil movement A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed... | 06/05/2007 |
| 7187776 | Planar loudspeaker The invention relates to a planar loudspeaker comprising a light, thin soundboard (2) which may be energized to produce multiply-reflected bending waves, a surrounding frame (3) holding the soundboard (2) in an articulated, shear-resistant manne... | 03/06/2007 |
| 7185735 | Audio speaker with wobble free voice coil movement A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed... | 03/06/2007 |
| 7180489 | Automated multi-task window assembly A window assembly includes a window frame defining a frame perimeter and at least one window mounted in the frame. A media panel incorporating a video display is associated with the window assembly and can be moved selectively into the frame perimeter for displaying... | 02/20/2007 |
| 7177439 | Methods and apparatus for dissipating heat in a voice coil The present invention is directed to methods and apparatus for dissipating heat in a voice coil of a loudspeaker, where at least one of: a bobbin having a substantially cylindrical shaped wall member is operable to support the voice coil, and the wall member include... | 02/13/2007 |
| 7152299 | Method of assembling a loudspeaker Electro-dynamic loudspeakers typically include a diaphragm having a conductor applied to one of its surfaces. The diaphragm is secured to a frame. The conductor is connected to a power supply for providing electrical current through linear traces of the conductor th... | 12/26/2006 |
| 7120263 | Bending wave acoustic radiator A bending wave panel-form acoustic radiator formed from sheet material to define an acoustically active area and having at least one integral stiffening member in the form of a corrugation extending out of the plane of the sheet and at least partially across the aco... | 10/10/2006 |
| 7062064 | Flat panel loudspeaker arrangement A flat panel loudspeaker arrangement with several panel loudspeakers of similar construction is disclosed. The panel loudspeakers are arranged seamlessly side-by-side and are rigidly connected with one another along their respective edges with a high shear strength.... | 06/13/2006 |
| 6988339 | Specialty media window A media window system includes a window unit having a window frame defining a frame perimeter and a glass unit located within the frame perimeter. The window unit includes a display area adapted to receive a display image. A display image source is configured to pro... | 01/24/2006 |
| 6956957 | Loudspeakers A loudspeaker drive unit comprising a resonant acoustic radiator, an exciter on the radiator to apply bending wave energy to the radiator to cause it to resonate, a support for the loudspeaker drive unit, and means resiliently coupling the exciter to the support. | 10/18/2005 |
| 6888946 | High frequency loudspeaker A tweeter with a light, thin sandwich plate which can be excited into multiple reflected bending waves, and a driver which makes a vibrating contact and excites the sandwich plate, where the driver is designed for higher sound frequencies and the sandwich plate for ... | 05/03/2005 |
| 6862361 | Audio speaker An audio speaker including a chassis and a diaphragm defining an axis. A suspension movably interconnects the diaphragm and the chassis for reciprocating movement of the diaphragm along the axis. A motor is operably connected to the diaphragm for powered movement th... | 03/01/2005 |
| 6687381 | Planar loudspeaker A planar loudspeaker is disclosed having a unique multi-layered sound resonator plate. The resonator has an upper layer and a lower layer maintained in a flat spaced-apart relationship. Divider walls or ribs are present to maintain the upper and lower lay... | 02/03/2004 |
| 6590993 | Panel-shaped loudspeaker A panel-shaped loudspeaker includes a panel (1) and an exciter coupled to the panel. The panel is provided with two parallel extending thin walls (1a, 1b) which are interconnected by a structure of thin strip-shaped partitions (1c) situated between the wa... | 07/08/2003 |
| 6560348 | Contact connections The invention proposes a contact connection for sound reproduction devices according to the flexural wave principle. Since the drive systems 21 of such installations require high current intensities and such current intensities could only be properly tran... | 05/06/2003 |
| 6456723 | Acoustic device An acoustic device has a plurality of resonant bending wave modes along the length of a member. The fundamental frequency of resonant bending wave modes in directions perpendicular to the length is much higher, so that the lower frequency resonant bending... | 09/24/2002 |
| 6411723 | Loudspeakers A flat panel rectangular or elliptical loudspeaker has one or more anisotropic diaphragms 14, 15, made of double skinned fluted polypropylene copolymer (core flute) or corrugated cardboards having a longitudinal bending strength greater than the transvers... | 06/25/2002 |
| 6389935 | Acoustic display screen A display screen (32), e.g., a projection screen comprising a panel having a light reflective surface, characterised in that the screen is a distributed mode acoustic radiator loudspeaker having a transducer (9) mounted wholly and exclusively thereon to v... | 05/21/2002 |
| 6327369 | Loudspeakers comprising panel-form acoustic radiating elements A panel-form loudspeaker (81) comprising a resonant distributed mode acoustic radiator (2), and drive means (9) mounted to the radiator to excite multi-mode resonance in the radiator, characterised by a baffle (6, 8) surrounding and supporting the radiato... | 12/04/2001 |
| 6285770 | Noticeboards incorporating loudspeakers Visual display apparatus comprising a notice board in the form of a distributed mode acoustic radiator having a transducer (9) mounted thereon at a preferential location or site for coupling to resonant bending wave modes to vibrate the radiator to cause ... | 09/04/2001 |
| 6278787 | Loudspeakers A mid/high frequency loudspeaker drive unit comprising a stiff lightweight resonant panel form member, a housing to which the panel fog member is mounted, a resilient suspension connected between the edges of the panel form member and the housing, the arr... | 08/21/2001 |
| 6275598 | Sound reproduction device The invention presents a sound reproduction device which operates in accordance with the flexural wave principle. Such devices have in common that a panel 10 is provided in which flexural waves are produced by a drive arrangement 16. The drive arrangement... | 08/14/2001 |
| 6247551 | Panel-form loudspeaker A panel-form loudspeaker has a resonant multi-mode radiator panel which is excited at frequencies above the fundamental frequency and the coincidence frequency of the panel to provide high radiation efficiency through multi-modal motions within the panel,... | 06/19/2001 |
| 6201878 | Portable compact disc player A portable compact-disc player (41), characterized by an opposed pair of loudspeakers (81) attached to the player, and in that each loudspeaker comprises a distributed mode acoustic radiator having a transducer (9) wholly and exclusively mounted thereon t... | 03/13/2001 |
| 6188775 | Panel-form loudspeakers A panel-form loudspeaker has two distributed mode acoustic radiators coupled by a resilient suspension. Each radiator has its own transducer.... | 02/13/2001 |
| 6176345 | Pistonic motion, large excursion passive radiator A passive radiator assembly for a speaker that substantially reduces diaphragm resonance in the operating frequency range of the device. The new passive radiator assembly includes a quasi-elliptical shaped laminated honeycomb diaphragm, which is damped by... | 01/23/2001 |
| 6160898 | Suspension mount for sound reproduction devices according to the flexural wave principle The invention proposes a suspension mount for sound reproduction devices according to the flexural wave principle. Characteristic for such devices is that a panel 10 is provided which must be flexibly attached to a holder 17. The panel 10 is composed of a... | 12/12/2000 |
| 6097829 | Fiber-honeycomb-fiber sandwich speaker diaphragm and method A composite loudspeaker diaphragm is disclosed having first and second substantially flat carbon fiber skins, and a honeycomb core sandwiched between the first and second carbon skins. In a preferred form, each carbon fiber skin comprises a sheet formed o... | 08/01/2000 |
| 5231672 | Plane-surfaced waved out-diffusion triangular beam-typed resonant board A waved out-diffusion triangular beam-typed resonant board includes a resonant board body, an upper board, a lower board and a paper bobbin. The resonant board body is formed by pressing with waves diffusing outwards horizontally at close intervals from i... | 07/27/1993 |
| 4817165 | Acoustic speaker device with a diaphragm having a spider web type core A dome-shaped acoustic motor diaphragm having a core of aluminum foil in the form of a spider web configuration resulting in the dome shape, the diaphragm being in the form of an annular semi-dome outer diaphragm part and a dome-shaped cylindrical inner d... | 03/28/1989 |
| 4764968 | Disk diaphragm for a loudspeaker The disklike diaphragm is made up of an essentially conical plastic film provided with vacuum-formed supporting members which extend up to the disklike radiating layer.... | 08/16/1988 |
| 4472604 | Planar type electro-acoustic transducer and process for manufacturing same A planar type electro-acoustic transducer having a disk-like inner diaphragm member to the top end inner side of a voice coil bobbin, and having an annular outer diaphragm member concentric with said inner diaphragm member and conjugated to the top end ou... | 09/18/1984 |
| 4322583 | Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets A diaphragm for a flat plate electroacoustic transducer such as a loudspeaker includes first and second diaphragm sheet members having a honeycombed core structure sandwiched therebetween and includes an interconnection between each diaphragm and the pist... | 03/30/1982 |
| 4313040 | Electro-acoustic transducer with free edge diaphragm In a loudspeaker, a suitably formed edge part is provided around the periphery of the diaphragm to form a certain gap between the edge part and an edge receiving part which has an annular recess corresponding to the configuration of the edge part, so that... | 01/26/1982 |
| 4272653 | Loudspeaker and a method of producing the same A loudspeaker comprises a diaphragm including first and second layers and a core member sandwiched between the layers, in which the core member has an edge or peripheral surface aslant relative to the direction of thickness thereof; and a drive assembly, ... | 06/09/1981 |
| 4198550 | Peripherally reinforced laminated loudspeaker diaphragm A diaphragm for a loudspeaker includes first and second sheet members between which a core member is sandwiched and secured so that the core member has peripheral edge portions extending between the edges of the sheet members and at which the core member ... | 04/15/1980 |
