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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7933429 | Vibrating element for an electroacoustic transducer A vibrating element (1) for an electroacoustic transducer, particularly for a loudspeaker, is provided, comprising a diaphragm (2) with at least two electrically conductive areas (3a, 3b) separated from each other, and with ... | 04/26/2011 |
| 7724914 | Dynamic microphone There is provided a dynamic microphone which prevents, with a simple configuration, the lead of a voice coil from breaking even when a strong sound pressure or the like presses a diaphragm to a magnetism generating circuit. The dynamic microphone includes a diaphrag... | 05/25/2010 |
| 7697712 | Speaker device for improving antenna property in a wireless portable terminal A speaker device installed in an earpiece, for improving an antenna property in a wireless portable terminal is provided. The speaker device includes a housing, a magnet is installed on the housing, a diaphragm located a predetermined distance away over the magnet a... | 04/13/2010 |
| 7515729 | Speaker device A speaker device includes a terminal member, a connecting member and a voice coil. The connecting member has a terminal mounting part, a flat surface and a recessed portion. The terminal member is mounted to the terminal mounting part. On the flat surface, an inner ... | 04/07/2009 |
| 7502487 | Speaker device A speaker device includes a terminal member, a connecting member, a conductive damper and a voice coil. The terminal member has a first connecting part, a slit, a hole, a second connecting part and a fixing part. The connecting member has a projecting portion on a b... | 03/10/2009 |
| 7492918 | Audio speaker with graduated voice coil windings An audio speaker driver having a voice coil with graduated windings such that different sections of the voice coil have different electrical resistances and/or lengths per unit of height of the voice coil. A center portion of the voice coil gives a greater BL, while... | 02/17/2009 |
| 7443995 | Acoustic loudspeaker An acoustic driver has a voice coil in which adjacent turns of the coil are spaced apart. The driver is placed at one end of a foam-lined, elongated structure, such as a tube. An opposing end of the structure is, in one embodiment, enclosed by a wall that is connect... | 10/28/2008 |
| 7433486 | Speaker and manufacturing method for the same A lead wire of a voice coil is wired along the surface of a diaphragm. The lead wire is bent toward a reverse side of the diaphragm at a peripheral edge portion of the diaphragm. The lead wire is led to the interior of a frame. An external terminal is provided to ex... | 10/07/2008 |
| 7412071 | Low-inductance electromagnetic drive without driving the magnetic flux circuit The present invention relates to a low-inductance electromagnetic drive without driving magnetic flux circuit, which comprises a magnetic pole, a drive coil, an upper magnetic inductive board, a permanent magnet and a lower magnetic-inductive board. The magnetic pol... | 08/12/2008 |
| 7403631 | Electro-acoustic transducer The two coil spring terminals have the structure of double coil spring terminal including a small diameter coil spring terminal and a large diameter coil spring terminal. In this case, a terminal holder is provided with a clamping portion for clamping the large diam... | 07/22/2008 |
| 7362877 | Electric acoustic converter and electronic device using the same An electro-acoustic transducer wherein a stopper of a terminal is composed of an elastic body having an impulsive-force resistance and an excellent resilience. The stopper is mounted on the yoke or lower plate of magnetic circuit, which is made of a metallic materia... | 04/22/2008 |
| 7358633 | Linear vibration motor using resonance frequency A linear vibration motor comprising a movable unit, a base assembly having a coil assembly, a housing and an elastic member, in which the movable unit has the maximum mass from a fixed housing volume. The elastic member has the outer periphery fixed to the ceiling o... | 04/15/2008 |
| 7356157 | Loudspeaker lead wire management system This invention is directed to a loudspeaker having a lead wire management system including guides located at both the voice coil and the frame of the speaker. Each guide is angled allowing them to control the arc at which the lead wires extend between the voice coil... | 04/08/2008 |
| 7346182 | Electroacoustic transducer and method for manufacturing the same A diaphragm subassembly comprises a voice coil, a diaphragm, a frame, and a pair of terminal members. A magnetic circuit unit comprises a yoke, a magnet, and a base. The diaphragm subassembly and the magnetic circuit unit are accommodated in a bottomed cylindrical c... | 03/18/2008 |
| 7336798 | Speaker apparatus and method of manufacturing the same A frame with a pot type yoke incorporated therein is held on a seating base, and an adhesive supplying means is disposed at a position located in close proximity to this seating base. A supply head of this adhesive supplying means has its supply port opposing an end... | 02/26/2008 |
| 7305248 | Electronic device An electronic device, in which accommodation space for a display can be extended over the space where a speaker might be provided. A portable terminal, as an example of an electronic device, is provided with a display/speaker section, an operating section, and a mic... | 12/04/2007 |
| 7289642 | Audio speaker An audio speaker has a T-yoke, a solenoid, a voice coil, a cone paper, a magnet, a gasket, a basket, a terminal, a damper and a wire. The T-yoke has a bottom disk and a pole formed on the bottom disk. The solenoid and the voice coil are mounted on the pole. The cone... | 10/30/2007 |
| 7277555 | Electroacoustic transducer with built in transducer circuit In an electroacoustic transducer (1), an annular shaped magnet system (14) is provided, enclosing an inner space (22), in which inner space (22) an integrated circuit (31) is accommodated, with the aid of which integrated circuit (... | 10/02/2007 |
| 7274797 | Speaker housing A speaker housing that includes an outer wall that has an upper wall point and a lower wall point. The outer wall forms an enclosure that is arranged in a predefined geometric shape that may match the shape of a loudspeaker that is installed in the speaker housing. ... | 09/25/2007 |
| 7263199 | Microphone assembly An electromagnetic transducer is described including a magnet assembly (50) and a conductive drive coil (52). The magnet assembly provides an emanating magnetic field within which the drive coil is located. The drive coil is a flat ring coil having a w... | 08/28/2007 |
| 7263200 | Loud speaker A loud speaker includes a circuit board and a base. The circuit board includes a plurality of contacts on a side thereof. The base is formed of plastic material by injection molding. The base includes an insertion groove in an end thereof. The circuit board is embed... | 08/28/2007 |
| 7254422 | Antenna-headset combination for a mobile terminal A headset for a mobile communication terminal is disclosed. The headset comprises a main body and a RF module printed circuit board (PCB) housed within it. A microphone is also housed within the main body and connected to the RF module PCB. A guide piece housing an ... | 08/07/2007 |
| 7254248 | One-magnet rectangular transducer An electroacoustic transducer comprising a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap there between, the magnetic circuit comprising one magnet. The magnet can either be positioned in the center of the magne... | 08/07/2007 |
| 7233680 | Speaker device To realizes a speaker device with a simple construction capable of keeping stable statement, regardless of vehicle types. A speaker device for applying electromagnetic force to a voice coil based on a supplied audio signal and generating a sound wave based on the au... | 06/19/2007 |
| 7221773 | Oval speaker apparatus and method of manufacturing the same An oval speaker apparatus includes a diaphragm whose outer peripheral shape in a plan view is oval or elliptical; an oval or elliptical voice coil for driving the diaphragm; an edge which is joined to an outer periphery of the diaphragm; and a frame to which an oute... | 05/22/2007 |
| 7200241 | Loudspeaker A speaker includes a substantially rectangular case having connection terminals at corners, a substantially rectangular voice coil, a diaphragm, and a substantially rectangular magnetic circuit. A lead drawn out from a corner of the voice coil in proximity to one of... | 04/03/2007 |
| 7194104 | Universal audio speaker connection block A speaker interconnection block with two voice coils to be driven with separate amplifiers, or to use one amplifier to drive the two voice coils in series or parallel without having to reinterconnect the voice coils. This is achieved by locating the negative voice c... | 03/20/2007 |
| 7167573 | Full range loudspeaker An edge-driven diaphragm loudspeaker driver is configured such that the suspension system of the driver is connected to the voice coil rather than to the diaphragm. Thus, the diaphragm in the loudspeaker is free of suspension systems connected to or extending from t... | 01/23/2007 |
| 7158650 | Electroacoustic transducer An electroacoustic transducer has an annular permanent magnet provided in a frame, and an annular top plate mounted on the permanent magnet. A ring is secured to the upper surface of the top plate. A diaphragm is secured to the ring. ... | 01/02/2007 |
| 7151840 | Magnet system of a sound transducer A miniaturized electro-dynamic sound transducer has a housing made of deep drawn sheet metal. A magnet system with a magnet is arranged in the housing. A diaphragm provided with a coil is arranged in the housing, and wires extend from the coil to contacts. The housi... | 12/19/2006 |
| 7146020 | Structure for the sound coil of loudspeaker An improved structure for the sound coil of loudspeaker comprises a cylinder provided with multiple layers of coils surrounding one end thereon. The coils are divided into sections in the middle position which provide more than two conducting wires. The cylinder is ... | 12/05/2006 |
| 7069061 | Speaker assemblies and mobile terminals including the same Mobile terminals include a housing, an electronic circuit and a speaker assembly positioned in the housing. The speaker assembly includes a first speaker positioned adjacent a first side of the electronic circuit and a second speaker positioned adjacent the first sp... | 06/27/2006 |
| 7062061 | Speaker apparatus Supplemental portions are added to lead portions of a voice coil attached to a coil bobbin. The supplemental portions each has a shape, which can be restored repeatedly in response to stress, applied to the lead portions. In the case where stress is exerted on the l... | 06/13/2006 |
| 7058195 | Speaker assembly An electromagnetic transducer is described including a magnet assembly (50) and a conductive drive coil (52). The magnet assembly provides an emanating magnetic field within which the drive coil is located. The drive coil is a flat ring coil having a w... | 06/06/2006 |
| 7054458 | Holder used in the microphone unit In a microphone having a microphone body stored in a substantially cylindrical metal casing, the casing per se is formed as a ground terminal while a plus terminal is disposed in the center of a lower end surface of the microphone body. A holder is formed to have a ... | 05/30/2006 |
| 7050601 | Voice coil of speaker A speaker is provided in which a coil wire can withstand a large amplitude motion caused by vibration of a voice coil bobbin and a diaphragm, and in which a bias of weight of the voice coil bobbin and the diaphragm caused by a constitution of the coil wire is reduce... | 05/23/2006 |
| 7035424 | Loudspeaker having an inner lead wire system and related method of protecting the lead wires A loudspeaker for generating sound from an electrical current provided by an external source may include an adapter and/or a guide for supporting, directing and routing lead wires carrying the electrical current from the external source. The lead wires may be routed... | 04/25/2006 |
| 7016515 | Speaker apparatus In an electromagnetic induction type speaker apparatus, individual constants are set in such a manner that the following formula is satisfied N×(R1×R2)1/2/(2π×L1×(1−k | 03/21/2006 |
| 7010142 | Electrical acoustic converter Disposed within a space formed between a base cover (2) and a top cover (1) attached to the base cover (2) is an electromagnetic sound generating part which has a diaphragm (9) attached to the base cover (2) and a drive part causin... | 03/07/2006 |
| 7006653 | Compact high performance speaker A speaker has an annular magnet structure. First and second annular magnets are arranged concentrically with each other and connected by a shunt at one end and a pole-defining structure at the other end to concentrate magnetic flux in a cylindrical voice coil gap. T... | 02/28/2006 |
