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| Number | Title | Issue Date |
| 8098878 | Miniature voice coil with integrated coupling coil The present invention relates to a miniature electro-acoustic transducer comprising a voice coil comprising an air gap voice coil portion at least partly positioned in an air gap of a magnet assembly, and a second voice coil portion attached to a diaphragm of the mi... | 01/17/2012 |
| 7329933 | Silicon microphone with softly constrained diaphragm A microphone sensing element and a method for making the same are disclosed. The sensing element has a diaphragm and an attached electrical lead-out arm preferably made of polysilicon that are separated by an air gap from an underlying backplate region created on a ... | 02/12/2008 |
| 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 |
| 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 |
| 7200240 | Loudspeaker spider with enhanced structure A spider with an enhanced structure is disclosed. The spider has a plurality of concentric corrugations each of which has a plurality of inflections so that the concentric corrugations have polygonal shapes. With this enhanced structure, a spider can have an improve... | 04/03/2007 |
| 7182324 | Microphone isolation system A microphone isolation system. The system includes an isolation member, a support member, and at least two compliant members. The at least two compliant members mechanically support the isolation member and isolate the isolation member from vibrations. The at least ... | 02/27/2007 |
| 7164777 | Speaker driver with detachable motor and basket A speaker driver has a detachable motor and basket to allow attachment or separation of the motor assembly from the basket assembly. Two embodiments are disclosed, a thread-on detachable motor and a bolt-on detachable motor. ... | 01/16/2007 |
| 7031490 | Speaker driver with detachable motor and basket A speaker driver has a detachable motor and basket to allow attachment or separation of the motor assembly from the basket assembly. Two embodiments are disclosed, a thread-on detachable motor and a bolt-on detachable motor. ... | 04/18/2006 |
| 6980931 | System and method for controlling computer processes by means of biometric data A signal isolation system includes an aeroisolator to couple output signals to an electronic device. The aeroisolator is made from two commercial miniature earphones, each having a ferro-magnetic diaphragm activated by a voice coil in proximity to a permanent magnet... | 12/27/2005 |
| 6904158 | 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/{2 Π×L1×(1−k2) | 06/07/2005 |
| 6863152 | Low profile audio speaker A symmetrically loaded, shallow suspension speaker with stiff diaphragm having a minimum dimension that is greater than the diameter of the magnet that drives the diaphragm thus allowing the suspension of the diaphragm to extend nearly to the bottom of the speaker b... | 03/08/2005 |
| 6853734 | Audio speaker damper with electrically conductive paths thereon to carry voice coil signals and a method therefore A linearly compliant, flexible, resilient and flat speaker damper connected between the frame and the cone of the speaker with electrically conductive paths applied to the damper to conduct the signal to be applied to the voice coil of the speaker. A method for line... | 02/08/2005 |
| 6836551 | Loudspeaker A loudspeaker includes: a bottom plate; a center pole provided upwardly from the bottom plate; a yoke surrounding the center pole and having a plurality of slits; a magnet for providing a magnetic flux for the center pole and the yoke; a coil provided between the ce... | 12/28/2004 |
| 6661903 | Loudspeaker A loudspeaker is provided, which includes a frame, a voice coil bobbin, and a diaphragm connected to the frame and the voice coil bobbin, wherein the diaphragm is connected to the voice coil bobbin in such a manner that a cone angle between the diaphragm ... | 12/09/2003 |
| 6584209 | Open-type magnetic circuitry of loudspeaker An open-type magnetic circuitry of loudspeaker includes a lower yoke having a central portion upward projected to form a bobbin, a magnet positioned on top of the bobbin, a voice coil wound around the bobbin and the magnet, and a diaphragm connected at a ... | 06/24/2003 |
| 6487771 | Method for manufacturing speaker bottom yoke Method for manufacturing speaker bottom yoke, including steps of: 1. calculating product weight according to required dimension; 2. cutting off a blank material with the calculated weight from steel bar (material bar), which blank material can be further ... | 12/03/2002 |
| 6473515 | Cap and center pole apparatus and method of coupling The present invention comprises an improved center pole having a distortion reduction cap and an improved method of coupling the cap to a speaker center pole. The speaker assembly comprises a distortion reduction cap and a cylindrical center pole having a... | 10/29/2002 |
| 6289106 | Cap and center pole apparatus and method of coupling The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pressed into a corresp... | 09/11/2001 |
| 6188774 | Loudspeaker A flat loudspeaker of superior quality for use in audio appliances, in which loudspeaker the generation of abnormal sounds is eliminated by placing a voice coil with a high accuracy in the magnetic gap. A diaphragm is split into a main diaphragm (11) and ... | 02/13/2001 |
| 6175637 | Acoustic transducer An electromagnetic induction type acoustic transducer apparatus including a magnetic gap formed between a plate and a pole piece serving as assemblies of a magnetic circuit, a conductive ring attached to a diaphragm, the diaphragm interposed within the ma... | 01/16/2001 |
| 6144753 | Damper for a speaker apparatus A speaker apparatus has a damper for supporting vibrating elements including a vibrating diaphragm. The damper is formed by injecting a predetermined amount of a resin material into a metal mold of an injection molding equipment.... | 11/07/2000 |
| 6111969 | High fidelity, broad band acoustic loudspeaker A broad band loudspeaker (101) includes a diaphragm (103) driven by coil assembly (125) centered on a pole (131) of a magnet assembly (133) by a low-friction guide (127) depending from a lower end the coil assembly, and a low-friction guide mounted on an ... | 08/29/2000 |
| 5920638 | Structure of speaker The present invention relates to a structure of speaker which includes a disk body directly connected to the opening of a sound coil in a speaker. The disk body has a couple of reinforcing heat-sinking rings, and the opening edge of disk body is connected... | 07/06/1999 |
| 5878150 | Damper for a loudspeaker and a method for producing the same A damper for a loud speaker is produced by molding a substrate into a desired shape in which a fabric or knitted cloth composed of core-sheath type conjugate fibers composed of filaments having a core-sheath type structure is used as the substrate. A resi... | 03/02/1999 |
| 5862242 | Speaker A speaker has a diaphragm of which plane shape as seen from a vibrating direction has a major axis and a minor axis, a band-shaped edge connected to the outer circumference of the diaphragm for holding so that the diaphragm may be free to vibrate, and a f... | 01/19/1999 |
| 5850462 | Speaker component, speaker, and its manufacturing method A speaker and its manufacturing method capable of reducing a man power required for mounting an input terminal and improving the product quality. The speaker manufacturing method uses a damper with a conductive member made of flat knitted tinsel wires loa... | 12/15/1998 |
| 5848174 | Linear movement speaker system An inner suspension system for a speaker assembly comprising a center spider, an intermediate spider, and a linear spider. The system reduces distortion of the output from the speaker and increases axial integrity of the movement of the cone. The center s... | 12/08/1998 |
| 5832096 | Speaker containing dual coil A loudspeaker including a voice coil and a counter coil connected in series to receive speaker signals. The counter coil is wrapped on the pole pieces in an opposite direction to the voice coil such that a first magnetic field generated by the voice coil ... | 11/03/1998 |
| 5822444 | Loudspeaker A loudspeaker having a magnetizable pole piece, a voice coil member surrounding the pole piece with a portion of magnetic gap and connected to a vibratable diaphragm, and a damper supporting the voice coil member, is characterized in that an elastic membe... | 10/13/1998 |
| 5790682 | Damper for speaker A butterfly damper for preventing an adhesion surface between a speaker frame (6) and an outer peripheral frame (12) from peeling off is provided. The butterfly damper comprises an inside peripheral flame (11), an outer peripheral flame (12) and a plurali... | 08/04/1998 |
| 5757945 | Terminal for speaker A speaker, and its manufacturing method, is disclosed where the speaker includes a speaker component of an integral structure which has a damper made of a base member having concentric corrugations and an opening formed generally at the center thereof and... | 05/26/1998 |
| 5729616 | Centering diaphragm According to the state of the art, most centering diaphragms (10) for loudspeakers are made of paper, plastic or textile material. These centering diaphragms (10) furthermore have plastic resin coatings. The attachment of the centering diaphragms (10) to ... | 03/17/1998 |
| 5450497 | Audio transducer improvements An audio transducer having a cylindrical diaphragm molded with contoured ridges. The diaphragm includes at least two lobes, each extending from a central expanse to the transducer frame. The lobes may have different radii and different angular arc lengths... | 09/12/1995 |
| 5418860 | Voice coil excursion and amplitude gain control device An active and passive loudspeaker voice coil excursion and amplitude gain control device is disclosed. The excursion and amplitude gain control device is utilized in connection with a voice coil actuator having a case, a coil and a coil carrier having an ... | 05/23/1995 |
| 5295194 | Multi-driver loudspeaker assembly A multi-driver, coaxially mounted loudspeaker array utilizing a high frequency bi-morph driving element (tweeter) that is preferably contained within the air-core of the voice coil former of a lower frequency loudspeaker (woofer). The outwardly extending ... | 03/15/1994 |
| 5249237 | Audio transducer improvements An audio transducer having a pair of magnets supported to provide a magnet gap within which a flexible diaphragm supporting an electrical coil is received. The diaphragm is formed of a pair of flexible cylindrical webs joined at their centers to support t... | 09/28/1993 |
| 5230021 | Audio transducer improvements An audio transducer having a pair of magnets supported to provide a magnet gap within which a flexible diaphragm supporting an electrical coil is received. The diaphragm is formed of a pair of flexible cylindrical webs joined at their centers to support t... | 07/20/1993 |
| 5123053 | Loudspeaker suspension A transducer comprises a diaphragm including a perimeter, a motor for causing the diaphragm to vibrate in response to an electrical signal corresponding to program material to convert the electrical signal to motion of the diaphragm and thus to an audio r... | 06/16/1992 |
| 4903308 | Audio transducer with controlled flexibility diaphragm An improved audio transducer includes a diaphragm having a pair of cylindrically-shaped webs that provide greater bandwidth, reduced distortion and greater horizontal dispersion of sound. The audio output of the transducer is further improved by forming t... | 02/20/1990 |
| 4508941 | Voice coil centering and suspension for vented pole piece An apparatus and method for centering a voice coil in a loudspeaker having a vented pole piece. The voice coil centering is accomplished by means of a concentrically located voice coil suspension and an attached cylindrical mounting ring that can be set i... | 04/02/1985 |
