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| Number | Title | Issue Date |
| 7918309 | Apparatus for producing a continuous sonic boom Herein taught is an apparatus for producing a continuous sonic boom that is simplified having few components. Namely, a motor, a rotating motor shaft, a rotor and a power source. The rotor is interconnected onto the rotating motor shaft, thus upon energizing, the mo... | 04/05/2011 |
| 7418109 | Diaphragm structure of light sound converter A diaphragm (1) of a light sound converter which has a high performance, is suitable for mass-production and has a slit (1s) formed therein. A light emitting element and a light receiving element are disposed at positions opposed to a reflective... | 08/26/2008 |
| 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 |
| 7316289 | Electro-acoustic transducer and method of manufacturing transducer An electro-acoustic transducer includes a tone generator, a vibrator, and a case. The tone generator includes a diaphragm, and a voice coil joined to the diaphragm. The vibrator includes a magnetic circuit having a magnetic gap at which the voice coil is positioned,... | 01/08/2008 |
| 7306073 | Electroacoustic transducer comprising a membrane with a middle area comprising stiffening grooves A membrane (20) has a membrane axis (5) and a middle area (50), a central cup-shaped depression (52) being provided around said membrane axis (5), which depression (52) preferably has a connecting channel (53), wherei... | 12/11/2007 |
| 7274798 | Speaker device A loudspeaker device 1 includes an acoustic diaphragm 5 composed of a domed diaphragm 11, an edge-like diaphragm 13, and a junctional flat portion 12 which joins those domed and edge-like diaphragms, and a joined portion 23 ... | 09/25/2007 |
| 7263198 | Loudspeaker A loudspeaker comprises a frame, a magnetic circuit unit, a vibration unit and a snap fastening device. The frame has a recess. The magnetic circuit unit is received in the recess of the frame. The magnetic circuit unit includes a yoke. The vibration unit is receive... | 08/28/2007 |
| 7258195 | Electromagnetic holding brake An electromagnetic holding brake comprising a switchable electromagnet (4) for holding a movable sheet (6) in a predetermined position, wherein said brake further comprises a second fixated sheet (5) which is arranged substantially parallel to t... | 08/21/2007 |
| 7236602 | Device for actuating a membrane and a vehicle comprising a device for actuating a membrane A device is provided for actuating a membrane arranged in an opening to a space, and a vehicle having such a device. The membrane has a first surface and a second opposite surface, and is limited by an edge area. The device includes a first strip to be attached to t... | 06/26/2007 |
| 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 |
| 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 |
| 7181040 | Case for containing electrical instrument A case for containing an electrical instrument, comprises a frame having a peripheral wall portion, a cover member having a peripheral wall portion fitted on the peripheral wall portion of said frame and configured to form a space for containing the electrical instr... | 02/20/2007 |
| 7157649 | Contact sensitive device Method and apparatus using bending wave vibration to calculate information relating to a contact on a contact sensitive device. The contact sensitive device has a member capable of supporting bending waves, and a device attached to the member measures bending wave p... | 01/02/2007 |
| 7155021 | Loudspeaker having an acoustic panel and an electrical driver A panel-shaped loudspeaker comprising a panel (1) having a first main surface (1A) and a second main surface (1B) parallel to the first main surface and further comprising an exciter (3) positioned at the first main surface. When the exci... | 12/26/2006 |
| 7050593 | Vehicular audio system and electromagnetic transducer assembly for use therein A vehicle overhead audio system and an electromagnetic transducer assembly for use therein are provided where a headliner of the vehicle is a loudspeaker of the system thereby replacing many other loudspeakers and being invisible to the occupants. The headliner is d... | 05/23/2006 |
| 6918461 | Dual mono center channel A pair of matched monaural speakers are added inside conventional left and right stereo speaker housings so that the left, right and flat panel monitor appear joined in a seamless aesthetic effect. The added speakers are provided with center channel monaural sound, ... | 07/19/2005 |
| 6870941 | Dipole radiating dynamic speaker A dipole radiating dynamic speaker design comprises a diaphragm (32) providing a surface for radiating acoustic output, a voice coil assembly (36) for driving the diaphragm, and a magnet system for providing magnetic flux across the voice coil assembly... | 03/22/2005 |
| 6748090 | Multi-mode radiator panels The invention relates to a system with multi-mode radiator panels used to reproduce sound. The multi-mode radiator panels include at least one driver, a core layer and two cover layers connected to the core layer. The panels are typically mounted in a frame with att... | 06/08/2004 |
| 6672423 | Speaker and method of assembling the speaker In a speaker including a voice coil which is wound on a voice coil bobbin and is inserted into a magnetic circuit gap of a magnetic circuit, and a cone which is coupled to the voice coil bobbin for vibration, the cone (16) is constructed of two divided co... | 01/06/2004 |
| 6578661 | Speaker apparatus A speaker apparatus which can remove undesirable vibrations and can produce sounds of excellent quality of acoustic signals having high audio frequencies is presented by increasing a strength of a flat joint portion and by properly setting a mass ratio be... | 06/17/2003 |
| 6513623 | Speaker A frame (14) supporting a diaphragm (12) by its outer periphery is constructed by a connecting ring (30) and a base (28) which comprises a bottomed cylinder portion (28A) and a mounting portion (28B) which extends radially outward from the bottomed cylind... | 02/04/2003 |
| 6484844 | Speaker By forming a flange portion (16a1) protruding inward in the radial direction at an upper end portion (16a) of a voice coil (16), a coiling sectional shape of the voice coil (16) is set to a L-shape. And, the upper end portion (16a) of this voice coil (16)... | 11/26/2002 |
| 6474440 | Diaphragm for speaker and speaker device provided with the same A diaphragm for a speaker and a speaker device, a frequency characteristic as well as the endurance against input of which are improved, have been provided. A convexo-concave portion is radially formed at a neck of the diaphragm, which is stuck to a voice... | 11/05/2002 |
| 6438242 | Acoustic transducer panel An electro-acoustic transducer in which a plurality of cymbal-type electro-acoustic actuators are disposed in mechanical and electrical parallel between a pair of stiff plates. The resultant transducer resonates at a lower frequency than the cymbals, with... | 08/20/2002 |
| 6307133 | Drumhead dampening device A device for use in combination with a musical drum for dampening extraneous and undesirable tones produced by the drumhead consisting of a means for affixing the device to the drum, such as, for example, a clamp assembly, mounted on a counterhoop. Connec... | 10/23/2001 |
| 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 |
| 6095278 | Base for holding the tweeter of a speaker A speaker base, which includes a tweeter holder having a holder base and a bottom mounting holder rod, and withholding ring mounted on the tweeter holder to hold a tweeter, wherein the tweeter holder has an axial center through hole through its holder bas... | 08/01/2000 |
| 5424496 | Electromagnetic converter To improve loudspeakers (10) with an internal magnet system (11), it is proposed that the moving coil (21) be carrierless in configuration, and be attached to a tubular segment (20) configured concurrently when the membrane (13) is produced.... | 06/13/1995 |
| 5125031 | Speaker system with focused vibration A loud speaker vibration transmitting apparatus has a speaker housing which encloses a speaker cone which vibrates within the housing and a propagation member which has a first contact end in contact with the speaker cone. In one embodiment, the propagati... | 06/23/1992 |
| 5081387 | Pump motor/basket brake for an automatic washer An automatic washer is provided with a separate motor to drive the drain pump, the motor having a displaceable stator portion connected to the basket brake mechanism such that when the pump motor is energized the basket brake will be released. Such a cons... | 01/14/1992 |
| 5022084 | Speaker An elastic material such as rubber is employed as the material of a diaphragm and the diaphragm is constructed in such a state that tension is made to exist intrinsically therein, whereby the vibration of the diaphragm when the vibration is applied to it ... | 06/04/1991 |
| 4998283 | Screen device A screen device suited to use in a projection type display device for a high-definition television set. The screen device includes a screen on which television images are projected, and a screen frame to which this screen is attached at the central sectio... | 03/05/1991 |
| 4967871 | Body-sensible acoustic device A body-sensible acoustic device and an electromechanical vibration converter for use in the same. The body-sensible acoustic device includes frames forming the structure of a chair having a seat and a back, canvas members spread on the frame, and driver u... | 11/06/1990 |
| 4961227 | Portable loud speaker system A portable speaker having a speaker housing which vibrates in harmony with the audible sounds generated by the speaker. The speaker includes a loud speaker housing having a surface capable of vibrating and a speaker cone which vibrates within said housing... | 10/02/1990 |
| 4837833 | Microphone with frequency pre-emphasis channel plate A high frequency emphasis microphone particularly adapted to a hearing aid application provides a steeply rising frequency response characteristic relative to frequency, and has a low pass sonic attenuator for providing to the undriven side of the microph... | 06/06/1989 |
| 4823907 | Balloon assembly A speaker system includes a thin plate type vibrating element mounted in, and brought into contact with, a balloon formed of a synthetic rubber or resin film. The balloon comprises a balloon member formed of a flexible film such as a vinyl chloride resin ... | 04/25/1989 |
| 4808202 | Adsorptive fiber sheet An adsorptive fiber sheet where a nonwoven fabric of synthetic fiber constituted only by synthetic fiber having a higher melting temperature is secured in a layered structure to at least one surface of a nonwoven fabric of adsorptive fiber which is produc... | 02/28/1989 |
| 4805732 | Motor powered sound emitter In a sound emitter including an emitting piston powered by a three phase asynchronous electric motor, the torque curve of the motor may be adjusted to suit any temperature, causing variations in the emitted resonance frequency by using a motor having its ... | 02/21/1989 |
| 4483411 | Tunable marine seismic source The disclosed device is a marine seismic source which produces a varying FM signal in the low end of the acoustic spectrum. The seismic source uses stiff oscillating radiators to create a signal in the water. These radiators are attached to devices acting... | 11/20/1984 |
| 4433750 | Synthetic horn projector with metal insert The invention pertains to electric horns for automobiles wherein a metal horn motor housing is assembled to a sound projector formed of synthetic plastic. A metal insert is molded into the projector having a metal flange extending from the projector adjac... | 02/28/1984 |
