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| Number | Title | Issue Date |
| 8094868 | Non-directional transducer A transducer for the creation of acoustic energy omni directionally in a horizontal plane. The transducer includes a base plate, the base plate supporting a centrally located voice coil motor assembly and a hemi-toroidal diaphragm having a proximal edge and a distal... | 01/10/2012 |
| 7835539 | Electroacoustic transducer using diaphragm and method for producing diaphragm An electroacoustic transducer has a cup chamber and a diaphragm made of deformable electrostrictive polymer, which is attached to an opening of the chamber. The electroacoustic transducer also has first and second adaptive electrode layers formed on a front surface ... | 11/16/2010 |
| 7813522 | Loudspeaker 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 ... | 10/12/2010 |
| 7801324 | Speaker apparatus A speaker apparatus comprises a dome type diaphragm comprising: a reinforcing rib; and an edge damper integrally formed with an outer periphery of the dome type diaphragm; and a frame supporting the dome type diaphragm through the edge damper. The reinforcing rib co... | 09/21/2010 |
| 7580542 | Loudspeaker apparatus A loudspeaker apparatus in which a diaphragm is reinforced easily and favorably. The loudspeaker apparatus includes a loudspeaker diaphragm formed by joining a domed diaphragm and an edge-like diaphragm and vibrated using a voice coil, and a reinforcement ring reinf... | 08/25/2009 |
| 7577270 | Dome-shaped diaphragm and speaker A dome-shaped diaphragm includes a dome part which is formed in a dome-like shape and is convex forward in an oscillating direction, a neck part which is provided in continuation to an outer periphery of the dome part, and an edge including a roll part which is form... | 08/18/2009 |
| 7426281 | Electrodynamic acoustic transducer The invention relates to an acoustic transducer generating a sound radiation by compression and expansion of an air mass situated between a mobile membrane and a fixed surface or between two mobile membranes. The present invention concerns a transducer or acoustic l... | 09/16/2008 |
| 7409071 | Large-diameter arcuate speaker In an arcuate array of speakers (100) the wind component of air motion near each speaker is converted into sound because the wind is trapped within the arc, and therefore the bass response is improved. The array acts like a single large speaker, of diameter e... | 08/05/2008 |
| 7350287 | Voice coil insertion jig, speaker producing method using the jig, and speaker produced by using the jig A method of manufacturing a speaker using a voice coil insertion jig including providing a voice coil insertion jig, deforming a plurality of moving pieces from a first position elastically toward a central boss side to a second position, inserting the voice coil in... | 04/01/2008 |
| 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 |
| 7333620 | Acoustic transducer with mechanical balancing One embodiment of a low-profile transducer includes a at least one fin perpendicularly mounted on a planar diaphragm, with a voice coil mounted onto the fin. The voice coil may reside in a strong uniform magnetic field. The locations at which the diaphragm is connec... | 02/19/2008 |
| 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 |
| 7286681 | Loudspeaker The invention relates to a loudspeaker comprising at least one magnet (5), a membrane (2) with an outer edge (32) defining an outer edge plane (30) of the membrane, a bead (3) surrounding the membrane (2), a moving coil (... | 10/23/2007 |
| 7277556 | Vibrating plate of dynamic microphone, method of manufacturing the vibrating plate and dynamic microphone comprising the same It is an object to provide a vibrating plate of a dynamic microphone and a method of manufacturing the vibrating plate, the vibrating plate having a sub-dome and a center dome to which a voice coil is bonded by an adhesive. A mechanical intensity of the vibrating pl... | 10/02/2007 |
| 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 |
| 7245739 | Dome type diaphragm and loudspeaker apparatus A loudspeaker apparatus includes a frame having an opening portion, a magnetic circuit constructed within the opening portion, a voice coil 27 in which a rear opening end portion is inserted into a magnetic gap of the magnetic circuit, a dome type diaphragm c... | 07/17/2007 |
| 7245738 | Electroacoustic transducer with small dimensions An electroacoustic transducer of small dimensions has a cup-shaped component made of a metallizable plastic material embedded in a housing component having a housing shape and being of a non-metallizable plastic material. The cup-shaped component has an inner surfac... | 07/17/2007 |
| 7236607 | Loudspeaker with a first and a second diaphragm body A loudspeaker includes a frame, a diaphragm and an electric driving arrangement for moving the diaphragm along an axis with respect to the frame. The diaphragm includes an outer conical first diaphragm body and an inner conical second diaphragm body invertedly orien... | 06/26/2007 |
| 7224813 | Loudspeaker using an electro-active device A loudspeaker comprising: a support, a sound-generating element mounted to the support for vibration to generate sound; and an electro-active device coupled between the support and the sound-generating element for vibrating the sound-generating element in response t... | 05/29/2007 |
| 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 |
| 7181038 | Electro-acoustic transducer An electro-acoustic transducer for driving a large surface is used to convert electrical signals into sound. The transducer has a housing with a cast aluminum bottom and a molded plastic top. The top and bottom are fastened together by screws with a gasket in betwee... | 02/20/2007 |
| 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 |
| 7088842 | Speaker apparatus It is an object of the invention to provide an improved speaker apparatus which maintains the advantages as an inverted dome speaker and has a good directivity and a thin thickness, as well as a broad playback frequency band extending from a high frequency band to a... | 08/08/2006 |
| 7079661 | Speaker for super-high frequency range reproduction A speaker is provided that is operable to reproduce ultrahigh frequencies. Specifically, the speaker outputs ultrahigh frequencies up to 100 kHz with stable sound pressure. The speaker may include a disk-shaped piezoelectric ceramic vibrator wherein a piezoelectric ... | 07/18/2006 |
| 7043035 | Miniature microphone A microphone for converting sound into an electrical signal includes a generally cylindrical housing including an inlet for receiving sound, an inner backplate, and an outer backplate. The inner and outer backplates are generally cylindrical and substantially concen... | 05/09/2006 |
| 7027610 | Loudspeaker A loudspeaker contains a hemispherical vibrator. The end portion of the hemispherical vibrator on the side opposite to the hemispherical curved surface is mounted on the main surface of a first circular baffle board. On the opposite side of the first baffle board fr... | 04/11/2006 |
| 7003130 | Resonance frequency correction method and vibration speaker A method of correcting a resonance frequency in a vibration speaker generating acoustic sound and vibration includes adjusting the actual resonance frequency to a higher resonance frequency by limiting a predetermined portion of an elastic member installed in a case... | 02/21/2006 |
| 6996246 | Speaker apparatus A speaker apparatus is provided. A frame has a projecting portion projecting toward a diaphragm at the periphery of the frame. The diaphragm has a rising portion extending opposite to the frame from the periphery of the diaphragm and having an outside surface along ... | 02/07/2006 |
| 6980664 | Double-dome speaker A loudspeaker comprising a moving coil and a membrane fastened to a chassis, where the membrane is divided into a concentrically disposed inner membrane part and a concentrically disposed outer membrane part, whereby a meeting area is defined between the inner membr... | 12/27/2005 |
| 6968069 | Low-profile tweeter with lateral air chamber A vented tweeter with a low profile particularly suited for automotive applications where the mounting depth is limited. The tweeter comprises a motor with a central air passage extending through it and a lateral air chamber formed around it. Radial channels on the ... | 11/22/2005 |
| 6944310 | Speaker apparatus A speaker apparatus includes an elliptical-shaped or a round-edged rectangular-shaped vibration plate; an edge damper portion disposed on an outer peripheral edge portion of the vibration plate; a recessed portion formed between said vibration plate and said edge da... | 09/13/2005 |
| 6839445 | Piezoelectric speaker A piezoelectric speaker includes a piezoelectric vibrator and a metal reflection plate. The piezoelectric vibrator includes a piezoelectric element which has a dome shape with a hollow portion and which is polarized in the thickness direction, a first electrode disp... | 01/04/2005 |
| 6832106 | Electroacoustic transducer A diaphragm for electroacoustic transducers including loudspeakers as formed substantially in a dome shape having an outer periphery of a circular shape and made excellent in tone quality is provided. The dome shape of the diaphragm has an irregular section with a c... | 12/14/2004 |
| 6804370 | Speaker capable to playback in wide frequency range A speaker capable to playback in wide frequency range by means of reducing peak values of amplitude of resonance frequencies in frequency characteristics is provided by means of differing a radius of curvature R1 of an inner diaphragm 10a and a ... | 10/12/2004 |
| 6804366 | Speaker apparatus An external magnetic-type speaker apparatus includes a magnetic circuit that is provided with a yoke having a center pole, ring-shaped magnet and plate. The magnetic circuit and the edge of a vibrating plate are attached to a support frame. Ventilation holes are for... | 10/12/2004 |
| 6801634 | Loudspeaker coil suspension system The invention provides a continuous layer of polymer that is shaped to act as the suspension, the former, and an attachment to the diaphragm. The coil may be located within the pocket providing insulation to the coil thus preventing electrical short circuiting of th... | 10/05/2004 |
| 6792127 | Elliptical dome for high frequency transducer A high frequency transducer having a dome diaphragm with a configuration of a bisected ellipse to overcome the distortion and breaking point of prior art even domes at frequencies above 30 kHz. The dome diaphragm having an annular skirt extending therefrom in an int... | 09/14/2004 |
| 6785397 | Electro-acoustic converter An electro-acoustic converter, comprising a barrel shaped diaphragm (2) formed about a longitudinal axis (3) and comprising first and second annular opposed ends (4, 5), and a first electrically driven vibration generator (6-11) fo... | 08/31/2004 |
| 6757404 | Loud speaker, diaphragm and process for making the diaphragm A diaphragm is gained by the co-molded of a dome part, a voice coil junction part, a cone part and a peripheral part through the injection mold of thermoplastic resin. The thickness of the central part of the dome is made great so that the resonance amplitude in thi... | 06/29/2004 |
| 6751330 | Speaker system A driver unit is fixed to a stand. A front box and a rear box are directly fitted to the stand through a buffer material. A box comes into contact with the driver unit through a buffer material and is fixed to the stand. Therefore, sound of the driver unit is not tr... | 06/15/2004 |
