| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 381423000 | Specified diaphragm shape or structure | 77 |
| 20080226116 | Diaphragm and Loudspeaker Using Same - Diaphragm ( | 09-18-2008 |
| 20080240488 | Speaker - There is disclosed a small-size speaker in which distortion is not easily caused when a diaphragm vertically movers for sound reproduction. The speaker includes: a bottom-equipped cylindrical frame having an opening at the top; a magnetic circuit arranged on the inner bottom of the frame; a voice coil whose coil portion is arranged in a magnetic gap of the magnetic circuit; a diaphragm arranged at the opening of the frame and its inner circumference is fixed to the voice coil while its outer circumference is fixed to the frame via a first edge; and a support body having one end fixed to the side of the diaphragm having the magnetic circuit and the other end fixed to the vicinity of the magnetic circuit via a second edge. The first edge has a shape substantially similar to the shape of the second edge with respect to the boundary between the first edge and the second edge. | 10-02-2008 |
| 20090016562 | Loudspeaker - A loudspeaker containing an improved voice drive structure including a convex diaphragm adhered with a voice coil before being mounted to a modified damper integrated with a surround to increase directivity of output of sound effects and effective expand sound field of the loudspeaker. | 01-15-2009 |
| 20090028376 | Diaphragm for loudspeaker and loudspeaker - A diaphragm body ( | 01-29-2009 |
| 20090028377 | DAMPER FOR SPEAKER AND SPEAKER USING THE DAMPER - The present invention realizes a speaker having high sound quality by reducing resonance of curved parts in a speaker damper without decreasing sound pressure and by providing high linearity characteristic. In a damper for a speaker formed by including at least two curved parts, an elastic member is provided at least on one side or on both sides of a peripheral part in a movable part of the damper or provided in the material. | 01-29-2009 |
| 20090028378 | SPEAKER SYSTEM - A speaker system includes a main speaker and a subordinate speaker arranged around the main speaker. A pseudo-spherical wave is generated around the main speaker as a whole such that both speakers are vibrated in the frequency range of piston vibration and are in phase and that the propagation speed of a sound wave produced by the vibration of the subordinate speaker is preferably lower than the propagation speed of a sound wave produced by the vibration of the main speaker. | 01-29-2009 |
| 20090034779 | Directional Sound Wave Radiator - The present invention belongs to the field of loudspeaker and relates to directional sound wave radiator comprising a sound transmission duct, a reverser, an annular director, a parabolic reflector, and a straight tubular loudspeaker cylinder. The sound transmission duct is mounted substantially coaxially with said parabolic reflector. The straight tubular loudspeaker cylinder is connected to said parabolic reflector. The reverser is provided inside said straight tubular loudspeaker cylinder and at the outlet end of said sound transmission duct; the outlet end of said reverser has an annular section, which is substantially perpendicular to the axis of said parabolic reflector and is positioned substantially at the focus of said parabolic reflector. The annular director is mounted around said sound transmission duct and at the outlet end of said reverser to define an annular shape of the outlet end of said reverser. The reverser and said annular director are fixed to said sound transmission duct by supporting screws. | 02-05-2009 |
| 20090060255 | MULTI-LAYERED MEMBRANES CONSISTING OF A PLURALITY OF MATERIALS, FOR THE LOUDSPEAKER OF A HIGH FIDELITY LOUDSPEAKER CABINET - The invention relates to a membrane ( | 03-05-2009 |
| 20090169049 | Low Profile Audio Speaker - A low profile audio speaker having a power less than 5W includes a concave chassis; a magnet secured onto a bottom of the chassis; a top plate mounted on the magnet; a mounting flange secured to a peripheral edge of the chassis; an outer peripheral corrugation having an outer edge secured to the mounting flange; a central diaphragm secured to the peripheral corrugation; and a voice coil extending downward from the diaphragm toward the chassis with the magnet and the top plate being surrounded. The peripheral corrugation is formed of PEI, PEN, PET, foam, or fabric. The peripheral corrugation is shaped as a circle or an oval. The peripheral corrugation includes at least two grooves and alternate ridges with the outermost ridge being flattened to be secured onto the top of the mounting flange. The diaphragm is formed of PEI, PEN, PET, foam, or fabric. | 07-02-2009 |
| 20090214076 | HIGH FIDELITY LOUDSPEAKER - A small and highly efficient loudspeaker, capable of handling high power, yet capable of being manufactured at reasonable cost, uses energy absorbing surfaces on a rear side of its diaphragm and as part of an enclosure that is integrated with its frame. | 08-27-2009 |
| 20090285441 | Loudspeaker Having a Continuous Molded Diaphragm - A loudspeaker is disclosed. The loudspeaker includes a rigid frame, a diaphragm is firmly attached to the frame. A plurality of transducers attached to the diaphragm. In use, the loudspeaker radiates acoustic energy by pistonic motion of the diaphragm in response to actuation by the plurality of transducers. The motion of the diaphragm is in a substantially fundamental mode. | 11-19-2009 |
| 20090304225 | DOME-SHAPED DIAPHRAGM AND LOUDSPEAKER USING THE SAME - The present invention provides a dome-shaped diaphragm fabricated based on a film base of polyethylene terephthalate resin film. The diaphragm includes a first vibrating part of a dome shape or a flat shape, and a second vibrating part of an annular shape. The second vibrating part includes a peripheral portion of the film base provided around a central portion of the film base. The first vibrating part includes the central portion of the film base, a thermosensitive adhesive resin film, provided on the central portion, and a fiber sheet made of a woven fabric using carbon fiber or an embossed nonwoven fabric. The fiber sheet is layered over the central portion with the thermosensitive adhesive resin film interposed therebetween. | 12-10-2009 |
| 20100046789 | METHOD FOR CONVERTING ELECTRIC SIGNALS INTO ACOUSTIC OSCILLATIONS AND AN ELECTRIC GAS-KINETIC TRANSDUCER - The invention relates to electroacoustic engineering, in particular to methods for converting electric signals into acoustic oscillations and to electroacoustic transducers. The method for converting electric signals into acoustic oscillations comprises exposing an oscillating system that is a gas medium pre-structured by a static electric field to an electric/electromagnetic field modulated in strength by an alternating electric signal in accordance with the shape and frequency of the modulating signal, and converting the energy of the field into acoustic energy to be released thereupon into the ambient. An electric gas-kinetic transducer developed to perform this method comprises a dielectric working element and at least two current-conducting plates that can be connected to the pole terminals of a direct voltage source and to a source of alternating electric signals. The operating principle of the transducer consists in converting the energy of the electric/electromagnetic field into the kinetic energy of gas, and then the kinetic energy of gas into acoustic radiation. This work is performed by gas filling nano/micro-sized channels of the capillary pore matrix of the working element under the effect of the external electric/electromagnetic field. An electric signal is converted into acoustic oscillations without involving mechanical intermediary devices, making it possible to avoid amplitude-phase and amplitude-frequency distortions and to reach a matching between the properties of the oscillating system, or a pre-structured gas medium, and the properties of the transmitting medium, or air, thereby improving the efficiency of conversion. | 02-25-2010 |
| 20100150392 | TRANSDUCER MOTOR STRUCTURE AND INSIDE-ONLY VOICE COIL FOR USE IN LOUDSPEAKERS - An electromechanical transducer | 06-17-2010 |
| 20100172537 | LOUDSPEAKER WITH REAR SURROUND SUPPORT - An improved dynamic loudspeaker that eliminates all visible mechanical components except the diaphragm when viewed from the front in a mounting baffle, and enables all of the front exposed diaphragm surface to emit sound. The surround support is entirely located within the perimeter edge of the diaphragm. A conventional dynamic loudspeaker motor/driver and voice coil system sized to fit behind and entirely inside the perimeter edge of the acoustic diaphragm permits the entire diaphragm to visually fill an opening in a mounting baffle and emit sound. | 07-08-2010 |
| 20100215209 | MEMBRANE FOR AN ACOUSTIC DEVICE AND ACOUSTIC DEVICE - A membrane | 08-26-2010 |
| 20100284562 | DIAPHRAGM AND SPEAKER INCLUDING SAME - [Problems] To provide a diaphragm enabling prevention of an unnecessary depression at the end of a diaphragm piece in a major-axis direction and reduction of the distortion of the sound produced by a speaker and a speaker including the same. | 11-11-2010 |
| 20100296692 | Ultrasonic transducer - An ultrasonic transducer includes: a diaphragm pot that has a surrounding wall; a transducer element mounted in a diaphragm pot on a transducer section on an inner side of the diaphragm for generating the ultrasonic vibrations; a first damping element situated in the diaphragm pot on transducer element for damping the diaphragm; and a second damping element situated within the diaphragm pot in an edge section of the diaphragm around the transducer element for damping vibrations of the wall; the second damping element being connected with force locking, at least section by section, both to the edge section and to the inner side of the wall. | 11-25-2010 |
| 20110019865 | SPEAKER - A speaker includes an elongated diaphragm and a coupling member including forward and rearward segments, wherein at least two protrusions are provided at the rear side of the diaphragm along the major axis direction, the forward segment is engagingly disposed between the opposing end faces of two adjacent protrusions and also between the two portions of a rib of the diaphragm opposing each other in the minor axis direction, and wherein the outer circumferential surface of the voice coil bobbin is connected to the inner circumferential surface of the rearward segment, whereby the voice coil bobbin having a diameter larger than the dimension of the diaphragm measured along the minor axis direction can be successfully attached to the diaphragm. In the speaker described above, the diameter of the voice coil bobbin can be increased without decreasing the width of a surround thus enabling the withstanding of higher power input. | 01-27-2011 |
| 20110019866 | MEMBRANE FOR AN ELECTROACOUSTIC TRANSDUCER - A membrane for an electroacoustic transducer is disclosed having a first area, a second area, which is arranged for translatory movement in relation to said first area, and a third area, which connects said first area and said second area, wherein local, planar spring constants along a closed line within said third area encompassing said second area, are determined in such a way that local, translatory spring constants along said line in a direction of said translatory movement are substantially constant or exclusively have substantially flat, mutual changes. | 01-27-2011 |
| 20110026759 | RING SHAPED MEMBRANE FOR AN ELECTRO-ACOUSTICAL LOUDSPEAKER - Ring-shaped membrane for an electro-acoustical loudspeaker, where said membrane comprises two or more dome-shaped annulus concentrically arranged around a central portion through which an imaginary axis of symmetry passes, where an outer periphery of said membrane is suitable to be attached to a surround; where the central portion is attached to a tower, which again is fastened to the loudspeakers driver, wherein the angle between a plane being perpendicular to the axis of symmetry and the attachment of the membrane to the surround resp. the tower is in the interval 0° to 40°, most preferred around 30°. | 02-03-2011 |
| 20110075881 | DIAPHRAGM AND LOUDSPEAKER USING THE SAME - A diaphragm includes carbon nanotube wire structures. The carbon nanotube wire structures are crossed with each other and woven together to form the diaphragm with a sheet structure. Each of the carbon nanotube wire structures includes carbon nanotube wires substantially parallel to each other, and closely arranged along an axis of the carbon nanotube wire structure to form a bundle-like structure, or carbon nanotube wires twisted with each other around an axis of the carbon nanotube wire structure in a helical manner to form a twisted structure. A loudspeaker using the diaphragm is also disclosed. | 03-31-2011 |
| 20110129113 | Speaker diaphragm and speaker - A speaker diaphragm with a circular opening in a center zone thereof has a pattern of concave and convex sections formed on a front surface or a rear surface thereof. A plurality of concave and convex sections are formed in each of regions provided at a regular interval with a specific angle in a circumferential direction of the diaphragm. The concave and convex sections formed in each region have different sizes in a radial direction of the diaphragm. The concave and convex sections formed in adjacent regions are displaced from each other in the radial direction. The concave and convex sections formed on the diaphragm are aligned on at least a first and a second imaginary curved line, respectively, each imaginary curved line passing regions and approaching an inner periphery of the circular opening from an outer periphery of the diaphragm. | 06-02-2011 |
| 20110158463 | CONE TWEETER MEMBRANE - Membrane construction for a loudspeaker, in particular a cone tweeter membrane construction, where said membrane comprises two concentrically arranged sections, a first inner dome shaped annular membrane section connected or integral with a second outer cone shaped membrane section, where the outer section comprises means for attaching a surround. | 06-30-2011 |
| 20110222722 | LOUDSPEAKER WITH DISTRIBUTED DRIVING OF THE MEMBRANE - The membrane of a loudspeaker, which is driven on a limited part of the membrane, does not move completely like the tone current. For example, a cone, which is driven in the top, provides more accurate driving by also being driven in the periphery from the drive system back where the movement of the sound coil also is taken out. The driving can e.g. be distributed with a cone of net. With separate sound coils from the front side and back side of the driving system, the loudspeaker properties can be optimised. The biggest benefit is achieved with a long loudspeaker where the movement is taken out from the back side of the long drive system and distributed with plates, cones and wavy walls to a bulgy membrane edges. | 09-15-2011 |
| 20110243370 | Loudspeaker with magnetic elements fixedly provided on diaphragm - The present invention is to provide a loudspeaker, which includes a frame having a through hole centrally provided at a bottom side thereof, a coil tube with a coil unit fixedly mounted around the outer periphery thereof and having a first end fixed to the through hole and a second end received in a receiving space of the frame, a diaphragm attached to periphery of an opening of the frame, and a plurality of oppositely oriented magnetic elements fixed on the diaphragm, wherein every two adjacent magnetic elements are spaced apart by an appropriate distance, and the magnetic elements are located in the coil tube at positions that magnetic lines generated by the coil unit are highly concentrated. Since vibration of the magnetic elements caused by the magnetic forces generated from the coil unit is enhanced, output power of the loudspeaker will increase accordingly. | 10-06-2011 |
| 20110299718 | System for Vibration Confinement - Systems and apparatuses are provided for vibration confinement and stress management in a loudspeaker. In one embodiment, the loudspeaker comprises a diaphragm that extends from an inner diaphragm region (e.g., dome or cone-shaped) to an outer diaphragm region, wherein the outer diaphragm region bends at a defined angle (e.g., between about 45 degrees and about 135 degrees) relative to the inner diaphragm region. The loudspeaker also comprises a suspension member extending from an inner suspension region to an outer suspension region, the inner suspension region overlapping and attaching with the outer diaphragm region. The bend in the diaphragm isolates the inner diaphragm region from spurious vibrations in the suspension member. | 12-08-2011 |
| 20110317869 | LOUDSPEAKER DIAPHRAGM AND LOUDSPEAKER INCLUDING THE LOUDSPEAKER DIAPHRAGM - A loudspeaker diaphragm according to an embodiment of the present invention includes: a diaphragm portion; and an edge portion, which is molded integrally with the diaphragm portion and made of a material different from a material for the diaphragm portion, wherein: the diaphragm portion includes, at an outer peripheral end thereof, an outer wall portion provided upright in a direction substantially parallel to a vibrating direction of the diaphragm portion; an inner peripheral surface of the edge portion is bonded onto an outer peripheral surface of the outer wall portion; and the outer wall portion has a height larger than a thickness of the diaphragm portion. | 12-29-2011 |
| 20120014556 | LOUDPEAKER WITHOUT EXTRANEOUS CONE FORCES DUE TO AIR TRAPPED BEHIND THE DUST COVER - A loudspeaker in which the cone contains holes which allows the air behind the dust cover to flow freely in and out from behind the dust cover as the cone moves. There may also be a hole or holes in the lower suspension to allow air to escape from behind the lower suspension without ever becoming turbulent. All edges on the cone and basket are to be rounded as much as economically possible to prevent the air flow from becoming turbulent. The back of the speaker should be wrapped in a cloth like nylon tulle to prevent magnetic particles from getting into the magnetic structure causing speaker failure. | 01-19-2012 |
| 20120063633 | SPEAKER - A speaker has an acoustic diaphragm, and an actuator that is driven based on a first acoustic signal. The actuator has a transmission portion that is directly or indirectly attached to the acoustic diaphragm and transmits a displacement output of the actuator to the acoustic diaphragm. The speaker also has a sounding body that is driven based on a second acoustic signal that is identical to or different from the first acoustic signal. | 03-15-2012 |
| 20120281870 | 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 edge. The proximal edge is appended to the centrally located voice coil motor assembly and the distal edge is appended to the base plate. | 11-08-2012 |
| 20120321124 | DIAPHRAGM AND MICRO-ELECTROACOUSTIC DEVICE INCORPORATING THE SAME - An exemplary diaphragm includes a central portion and an external portion connecting the central portion. The central portion includes a central section in a center thereof, a peripheral section at an outer periphery thereof, and a connecting section interconnecting the central section and the peripheral section. The peripheral section forms two protrusions each having three recesses defined therein. A micro-electroacoustic device using the diaphragm is also provided. | 12-20-2012 |
| 20130259291 | LOUDSPEAKER DIAPHRAGM AND LOUDSPEAKER USING THE SAME - A loudspeaker diaphragm includes a diaphragm portion and an edge portion, which is molded integrally with the diaphragm portion and made of a material different from a material for the diaphragm portion. The edge portion contains at least one thermoplastic polymer (I), in combination with a block polymer (II). The at least one thermoplastic polymer (I) is selected from a block copolymer (I-a) which contains a polymer block (A) having a repeating structural unit derived from an aromatic vinyl compound and a polymer block (B) having a repeating structural unit derived from a conjugated diene, and an addition hydrogenated block copolymer (I-b) of the block copolymer (I-a). The block copolymer (II) contains a polymer block (C) having a repeating structural unit derived from an olefin compound and a polymer block (D) having a repeating structural unit derived from a (meth)acrylic compound. | 10-03-2013 |
| 20130279738 | HIGH AMPLITUDE LOUDSPEAKER - A speaker. The speaker includes a housing, a first electrode, a second electrode, and a diaphragm. The housing has a first end, the first end which includes an acoustic aperture. The first electrode is positioned in the housing a first distance from the first end, and is biased to a first voltage. The second electrode is positioned in the housing a second distance, which is greater than the first distance, from the first end. The second electrode is biased to a second voltage. The diaphragm is positioned in the housing between the first electrode and the second electrode, and is biased to a third voltage. The speaker includes a valve. The valve opens when the diaphragm is moving away from the first end and closes when the diaphragm is stationary or moving toward the first end. When the valve is closed, the diaphragm forms an air-tight seal between the first end and the second electrode. | 10-24-2013 |
| 20140079277 | Sound Transducer Structure and Method for Manufacturing a Sound Transducer Structure - A sound transducer structure includes a membrane, a counter electrode, and a plurality of elevations. The membrane includes a first main surface, made of a membrane material, in a sound transducing region and an edge region of the membrane. The counter electrode is made of counter electrode material, and includes a second main surface arranged in parallel to the first main surface of the membrane on a side of a free volume opposite the first main surface of the membrane. The plurality of elevations extend in the sound transducing region from the second main surface of the counter electrode into the free volume. | 03-20-2014 |
| 20140098984 | LOUDSPEAKER CONSTRUCTED FROM SHEETS - A loudspeaker designed with a large area having sandwich-like layer structure includes a plurality of conductive and nonconductive layers which form an active sound-radiating loudspeaker surface. The plurality of conductive and nonconductive layers include a first diaphragm sheet coated with an electrically conductive layer, a second diaphragm sheet coated with an electrically conductive layer, a static high-voltage supply, which generates an electric field between the first electrically conductive layer and the second electrically conductive layer, and an audio source which influences the high-voltage fields between the first electrically conductive layer and the second electrically conductive layer via a capacitor. The invention is distinguished in that, with the second electrically conductively coated diaphragm sheet, the first electrically conductively coated diaphragm sheet forms a sandwich which extends simply over the active loudspeaker surface, around a first elastic and nonconductive interlayer. | 04-10-2014 |
| 20140369548 | Formed Diaphragm Frame For Receiver - An acoustic apparatus includes a top assembly and a bottom assembly. The bottom assembly is coupled to the top assembly to form an overall assembly. A diaphragm assembly is disposed in the overall assembly so as to separate the overall assembly into a front volume and a back volume. The diaphragm assembly includes a frame and the frame has a first end, a second end, and a middle portion that is disposed between the first end and the second end. The first end and the second end are not in the same plane as the middle portion. The first end is coupled to the bottom assembly and the second end is coupled to the top assembly. | 12-18-2014 |
| 20150071483 | ENERGY CONVERTER, SPEAKER, AND METHOD OF MANUFACTURING ENERGY CONVERTER - An energy converter includes a permanent magnet and a diaphragm. The permanent magnet is fixed to a predetermined area. The diaphragm is disposed on the permanent magnet and has a coil formed of a conductor pattern. | 03-12-2015 |
| 20150146914 | Audio Transducer With Electrostatic Discharge Protection - An apparatus including a diaphragm, where the diaphragm includes a membrane having electrically conductive material; a drive configured to move the diaphragm; and a connector configured to connect the membrane to a ground. | 05-28-2015 |
| 20150296301 | WIDE-RANGE, WIDE-ANGLE LOUDSPEAKER DRIVER - An air motion transformer loudspeaker driver including a plurality of diaphragm layers having electric conductors. Each of the diaphragm layers defines a surface having at least one curved portion. The curved portions have an axis of curvature being perpendicular to the surface of the diaphragm layer at the location of the curved diaphragm portions. | 10-15-2015 |
| 20150319532 | DIAPHRAGM, LOUDSPEAKER USING DIAPHRAGM, ELECTRONIC DEVICE AND MOBILE DEVICE USING LOUDSPEAKER, AND METHOD FOR PRODUCING DIAPHRAGM - A diaphragm includes a paper layer and a skin layer. The paper layer includes natural fibers and synthetic fibers formed of thermoplastic resin. The paper layer is formed by mixing the natural fibers and the synthetic fibers in water, and thinly spreading a resultant mixture on a mesh. The skin layer is formed on one surface of the paper layer. Note here that the skin layer is formed of the same resin as that of the synthetic fibers. | 11-05-2015 |
| 20150319533 | ACOUSTIC TRANSDUCERS - The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator coupled to the diaphragm to cause movement of the diaphragm. The transducer includes a member that limits bending of the diaphragm. | 11-05-2015 |
| 20160142824 | KNURLED SPEAKER DIAPHRAGM - A speaker may be configured with at least one diaphragm positioned proximal to and separated from an array of magnets. The diaphragm may consist of a substrate and at least one patterned electrically conductive trace with a portion of the diaphragm knurled to provide a ridge extending a height above the diaphragm that is at least twice a thickness of the diaphragm. | 05-19-2016 |
| 20190149911 | COMPRESSION DRIVER WITH SIDE-FIRING COMPRESSION CHAMBER | 05-16-2019 |
| 381424000 | Plural portions or sections | 7 |
| 20090034780 | Diaphragm for full range boxless rotary loudspeaker driver - The design of a diaphragm for a rotary loudspeaker driver that all but eliminates phase cancellation and therefore eliminates the necessity of a box to acoustically isolate the front sound from the back. The key element of the design of the diaphragm is to use a cross section of at least three equal sides. This allows for the long sides of the diaphragm to create essentially positive pressure only as it rotates and creates a very rigid structure. Further by sizing the cross section to the width of the highest frequency to be produced you allow for a nearly perfect 360 degree radiation at all frequencies. | 02-05-2009 |
| 20090129624 | Acoustic diaphragm - An acoustic diaphragm is disclosed having a plurality of acoustic elements supported by the diaphragm. In a preferred form, each element is coupled to a driver and extends radially at a uniform acute angle to a normal of the driver. In the preferred embodiment, a plural layer of the elements is arranged so that the direction of each element is out-of-phase relative to each other, preferably in the range of approximately ninety degree. An element is also supplemental to the conventional acoustic diaphragm. The improved acoustic diaphragm is used in electric acoustic and acoustic electric transducer systems having improved performance at wide frequency range. | 05-21-2009 |
| 20090136078 | Loudspeaker - A loudspeaker including a frame and a toroidal magnet that is affixed to the rear of the frame. The toroidal magnet has a central passageway that opens into the frame. A cap is affixed to the rear of the magnet and closes the central passageway. A guide rod is affixed to the cap and projects forwardly from the cap into the central passageway. A tubular former is slidably positioned upon the guide rod. A voice coil is wound about, and is affixed to, the tubular former. A driver plate is affixed to the front of the tubular former. A resilient surround connects the periphery of the driver plate to the front of the frame. A suspension assembly resiliently connects the tubular former to the frame and has a pair of conical diaphragms that are secured together so as to form a bellows. A spider connects the bellows to the frame and another spider connects the bellows to the tubular former. | 05-28-2009 |
| 20110019867 | ELECTRO-ACOUSTIC TRANSDUCER WITH MULTI-FACED DIAPHRAGM ASSEMBLY - One mode of the present invention provides an electroacoustic transducer composed of a multifaced diaphragm assembly and a multifaced speaker housing assembly that is housed inside the multifaced diaphragm assembly. The multifaced speaker housing is configured by combining the outer peripheral surface of a plurality of individual speaker drive units into a nearly spherical shell. The multifaced diaphragm assembly, which has thereinside the multifaced speaker housing assembly, is configured to have a plurality of regular pentagonal diaphragm segments that are combined together into a nearly spherical shape shell, and a plurality of speaker drive units opposing the diaphragm segments from inside in one-to-one relation. Each speaker drive unit has a bobbin, the one end portion of which is adhered to the center portion of the inner surface of each diaphragm segment. | 01-27-2011 |
| 20120170796 | ULTRA-THIN LOUDSPEAKER STRUCTURE - An ultra-thin loudspeaker structure mainly includes an upper drum paper, a lower drum paper and a steel sheet. A winding semicircle-shaped protrusion is disposed in a position adjacent to an edge of the lower drum paper, and thus a frame-defining portion is formed. The lower drum paper is provided with an opening at the center. The upper drum paper has an area approximately equal to that of an inner edge of the frame-defining portion. The upper drum paper is provided with an opening at the center. The steel sheet is provided with a sound-making member stacked by a plurality of ceramic material layers. A lead wire is welded to the sound-making member. The steel sheet is sandwiched between the upper drum paper and the lower drum paper. The upper drum paper is embedded in the inner edge of the frame-defining portion of the lower drum paper, and thus a thin loudspeaker is formed. After the sound-making member receives an audio signal, a sound is guided out through the upper drum paper and the lower drum paper. Therefore, the loudspeaker structure is applied to thinned products such as i-pad, i-phone or mobile phones, headphones, speaker boxes and notebook computers. | 07-05-2012 |
| 20150110339 | PLANAR MAGNETIC ELECTRO-ACOUSTIC TRANSDUCER HAVING MULTIPLE DIAPHRAGMS - A multi-diaphragm planar magnetic electro-acoustic transducer is provided, having a plurality of diaphragms arranged in one or more diaphragm modules. Each diaphragm comprises a substrate and at least one electrically conductive circuit on at least one surface of the substrate. Each diaphragm module comprises at least one diaphragm, each held taut by a frame. Each diaphragm module is disposed to one side or the other of at least one planar magnetic array, the diaphragm module being parallel to and aligned with the planar magnetic array to form the multi-diaphragm planar magnetic transducer. | 04-23-2015 |
| 381425000 | Honeycomb | 1 |
| 20090175487 | 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 achieving light weight of a speaker using the diaphragm, preventing a difficulty of the speaker in emitting an audio sound. | 07-09-2009 |
| 381426000 | Critically defined material or lamination | 6 |
| 20160052246 | COMPOSITE FOR PRODUCTION OF AN ACOUSTIC MEMBRANE AND ACOUSTIC MEMBRANE - The invention relates to a composite for production of an acoustic membrane, wherein the composite comprises an internal carrier layer and at least two adhesive layers on the two surfaces of the carier layer, and wherein the carrier layer is a layer of a polyaryl ether ketone film; and also to a corresponding membrane for acoustic transducers. | 02-25-2016 |
| 20160381460 | NOVEL DIAPHRAGM AND A HEADPHONE DRIVER MADE THEREWITH - A novel diaphragm and a headphone driver made therewith, which comprises diaphragm substrate and diamond-like carbon coating plated on the diaphragm substrate; the amorphous diamond-like carbon coating (ADLC) being made of non-crystalline diamond material, the amorphous diamond-like carbon coating (ADLC) defining a mixture of sp3-structure diamond and sp2-structure graphite carbon which can effectively enhance the details, clarity and fidelity of music based on the high hardness, excellent heat conductivity as well as treble vibration frequency up to 70 KHz, so as to satisfy the requirements of high-end market consumers. | 12-29-2016 |
| 381427000 | Metal | 1 |
| 20090175488 | Diaphragm and Electrical-Acoustic Transducer having the same - An electrical-acoustic transducer includes a housing, a magnetic circuit device, a voice coil and a diaphragm. The magnetic circuit device is disposed in the housing and generates a magnetic circuit. The voice coil is disposed on the path of the magnetic circuit, and configured for generating magnetism upon receiving an electrical power. The diaphragm is made of metal, fixedly combined with the voice coil and having a scraggy cross section. When the voice coil of the electrical-acoustic transducer generates the magnetism according to the electrical power and interacts with the magnetic circuit, the diaphragm vibrates so as to generate sound. | 07-09-2009 |
| 381428000 | Fibrous | 3 |
| 20090080687 | SPEAKER DIAPHRAGM, SPEAKER DUST CAP, SPEAKER SUB-CONE, SPEAKER USING THESE COMPONENTS, AND ELECTRONIC APPARATUS USING THE SAME - A loudspeaker of high sound quality is achieved by improving rigidity of a material used for a diaphragm, a dust cap and a sub-cone. The diaphragm, the dust cap and the sub-cone of the loudspeaker are made of a paper beaten with the material containing bamboo fibers obtained from a bamboo tree aged one year or older, of which the fibers are finely beaten to an extent of micro-fibrillated form. The diaphragm and the dust cap are also made with a beaten paper containing at least 2 wt % of “A fibers” having stems of no greater than 30 μm in diameter, and surfaces of the stems are fibrillated into shaggy branches having diameters of 1 μm or less. | 03-26-2009 |
| 20110188699 | WOVEN OR KNITTED FABRIC, DIAPHRAGM FOR SPEAKER, AND SPEAKER - A speaker having a diaphragm made of a woven/knitted fabric containing a conductive fiber and a non-conductive fiber, where the fabric has a woven structure or a knitted structure of the non-conductive fiber, and a continuous wiring forming a coil of the conductive fiber. | 08-04-2011 |
| 20160037262 | VIBRATING BODY FOR SPEAKER DEVICE AND SPEAKER DEVICE - Provided are a vibrating body for speaker device which prevents interlayer from peeling in advance and includes a large effective vibration area, and a speaker device including this vibrating body for speaker device. The vibrating body for speaker device includes a first interlaced fiber member, and a second interlaced fiber member which overlaps with the first interlaced fiber member, and one of the first interlaced fiber member and the second interlaced fiber member includes polyvinyl alcohol fibers containing boron, and an outer circumferential portion of the first interlaced fiber member is larger than an outer circumferential portion of the second interlaced fiber member. | 02-04-2016 |
| 381430000 | Dome or round | 9 |
| 20090016563 | Micro-speaker - The present invention relates generally to a compact speaker which includes a diaphragm with an embedded voice coil on the surface of the diaphragm, and a magnet, secured in a frame. Due to the placement and orientation of the voice coil, the improved transducer is compact, easy to manufacture, robust and efficient. | 01-15-2009 |
| 20090022356 | Electro-Acoustic Transducer - An electro-acoustic transducer comprises a front part having an acoustically radiating surface, a supporting part that supports the front part and that extends from a peripheral region of the front part in a direction away from the acoustically radiating surface, and a reinforcing part that provides rigidity to the transducer. The reinforcing part extends from the supporting part to the front part such that a portion of the reinforcing part is spaced from the front part and/or the supporting part. | 01-22-2009 |
| 20110064260 | INSERT MOLDED SUSPENSION MEMBER WITH MECHANICAL SUPPORT - A suspension member for a diaphragm, the suspension member comprising a first portion being adapted to be coupled to a substantially stiff piston part, a second portion integrated with a substantially stiff support member suitable for acoustic sealing purposes, and a flexible member connecting the first and second portions. | 03-17-2011 |
| 20120155698 | Cone loudspeaker - A loudspeaker comprising an acoustically radiating diaphragm comprising a generally frustoconical membrane having a narrow neck end and a wide mouth end, stiffening formations for stiffening the radiating membrane and an interface region by which the diaphragm is adapted to be driven; and a transducer comprising a voice coil mounted to drive the diaphragm via its interface region; wherein the interface region is located at the node of the first mode of vibration of the diaphragm. | 06-21-2012 |
| 20120263341 | REINFORCED DIAPHRAGM FOR A LOW PROFILE LOUDSPEAKER TRANSDUCER - A diaphragm for use in a loudspeaker transducer is disclosed. The loudspeaker transducer may include a voice coil, a former, a first magnet assembly having a circular inner magnet, a top plate having a annular outer top plate and a circular inner top plate, a second magnet assembly having an annular outer magnet and a circular inner magnet, an air gap defined by the circular inner magnet of the first magnet assembly, annular outer top plate, circular inner top plate, annular outer magnet and circular inner magnet of the second magnet assembly, and a surround suspension member. | 10-18-2012 |
| 20130016873 | W Dome Speakers - A W-shaped radiating surface for a transducer assembly is described. The radiating surface has a center portion and an outer portion. The center portion is disposed in the center of a voice coil former and has a first sloping region and a second sloping region that meet at a first angle. The outer portion is disposed outside the center of the voice coil former and has a third sloping region and a fourth sloping region, which meet at a second angle. The center portion couples with the outer portion at a third angle to form a radiating surface that has a W-shaped cross section. | 01-17-2013 |
| 20130243238 | PLANAR SPEAKER SYSTEM - A planar speaker system may include a bottom frame having a cavity. Within this cavity a plurality of magnets may be arranged to form a substantially circular pattern. A diaphragm that includes a plurality of electrically conductive traces may be connected to the bottom frame and extend across the cavity of the bottom frame. When alternating current flows through the electrically conductive traces, the diaphragm may vibrate in response to the interaction between the current flowing in the electrically conductive traces and the magnetic field, thereby producing sound. The planar speaker system may include a top frame having a cavity, and a second set of magnets may be disposed in the cavity of the top frame. | 09-19-2013 |
| 20130243239 | PLANAR SPEAKER SYSTEM - A planar speaker system may include a bottom frame having a cavity. Within this cavity a plurality of magnets may be arranged to form a substantially circular pattern. A diaphragm that includes a plurality of electrically conductive traces may be connected to the bottom frame and extend across the cavity of the bottom frame. When alternating current flows through the electrically conductive traces, the diaphragm may vibrate in response to the interaction between the current flowing in the electrically conductive traces and the magnetic field, thereby producing sound. The planar speaker system may include a top frame having a cavity, and a second set of magnets may be disposed in the cavity of the top frame. | 09-19-2013 |
| 20140314268 | PLANAR SPEAKER - The present invention provides a low-frequency sound reproduction apparatus that includes a membrane assembly, a piston configured to drive the membrane and an adhesive layer positioned between the membrane and piston. The adhesive layer bonds the membrane to the piston, the membrane has a modulus of elasticity less than 3 GPa, and the piston has a modulus of elasticity greater than 15 GPa. | 10-23-2014 |
| 381431000 | Flat | 6 |
| 20090052726 | DIAPHRAGM AND LOUDSPEAKER UNIT USING THE SAME - [PROBLEM] There is provided a diaphragm, and a loudspeaker unit using the same, capable of providing better low-tone characteristics than conventional ones. | 02-26-2009 |
| 20110033079 | FLAT LOUDSPEAKER STRUCTURE - A flat loudspeaker structure is provided. A conductive electrode of a vibrating membrane of a flat speaker unit is disposed on both utmost sides of the flat speaker unit, so as to improve reliability of the flat speaker unit. The utmost conductive electrodes of the flat speaker unit are further grounded to achieve the EMI preventing function and/or thereby prevent a user from a risk of contacting high voltages. The flat speaker unit at least includes a pair of vibrating membranes each having the conductive electrode, a plurality of supporting members, a perforated electrode structure with a plurality of holes, and an insulator layer. | 02-10-2011 |
| 20120002838 | FLAT SUBWOOFER - Flat subwoofer ( | 01-05-2012 |
| 20130089232 | VOICE FILM OF MULTI-LAYERED STRUCTURE FOR FLAT TYPE SPEAKER - The present invention relates to a voice film having a multi-layered structure for a flat panel speaker, including a PCB configured to have permanent magnets disposed on the left and right sides thereof, to have a voice coil patterned therein and disposed between the permanent magnets on the left and right sides so that the voice coil is vibrated up and down, and to have a PCB structure of a stack structure and coil patterns formed on surfaces of the highest PCB, one or more intermediate layer PCBs, and the lowest PCB in the form of a consecutive spiral track, wherein the start points of coil patterns of adjacent PCBs formed in layers, from among the coil patterns, are shorted through a via hole and are bonded to the respective end points of the coil patterns of the adjacent PCBs at the end points of the coil patterns. | 04-11-2013 |
| 20140037128 | DEVICE FOR EMITTING AN ACOUSTIC WAVE - A device for emitting an acoustic wave includes a flared structural piece bearing at its base an electromechanical transducer and defining at its flared end an output surface. A mechano-acoustic coupler made of one piece is a solid piece and exhibits: a first portion for mounting on the transducer, a second portion extending from the first portion up to the level of the output surface, the coupler being suspended on the structural piece at the level of the second portion and the second portion having a cross-sectional area at the level of the output surface which is strictly greater than its cross-sectional area at the level of the first portion, and a third portion extending from the second portion, where the third portion has a cross-sectional area which is smaller than the output surface, the third portion including a cross-section of greater area than the output surface. | 02-06-2014 |
| 20140105445 | FLAT-PANEL SPEAKER HAVING A MULTILAYER PCB PATTERN VOICE COIL FILM - The present invention relates to a flat-panel speaker, and more particularly, to a flat-panel speaker having a multilayer PCB pattern voice coil film, which enables induced electromotive force to be increased by controlling the impedance of the multilayer voice coil film. The flat panel speaker having the multilayer PCB pattern voice coil film according to the present invention is characterized in that the voice coil comprises: a PCB (printed circuit board) pattern printed thereon and voice coil films stacked in an even number of 4 layers or more. Two layers each of said voice coil films are mutually connected in series, and the serially-connected voice coil films are connected to each other in parallel. | 04-17-2014 |
| 381432000 | Conical | 5 |
| 20090074228 | LOUDSPEAKER CONE BODY - A loudspeaker cone body made of paper may include a chemically-bound nanomaterial, such as a carbon nanotube. The carbon nanotube may be chemically bound to a functionalizing agent having a chemical group chemically bound to one or more papermaking additives, such as a sizing agent or a wet strength agent, a dry strength agent, a resin or cellulose-containing papermaking stock material typically present in a paper loudspeaker cone body, such as pulp. Acoustic-related loudspeaker performance characteristics such as stiffness to weight ratio and an acoustic damping of the loudspeaker cone body may be altered by incorporation of the nanomaterials chemically bound to the loudspeaker cone body. | 03-19-2009 |
| 20090316949 | Electrodynamic loudspeaker device - An electrodynamic loudspeaker device comprising a chassis ( | 12-24-2009 |
| 20110064261 | SPEAKER - A speaker includes a speaker body; a cone paper movably supported by the speaker body; and a magnetic driving unit disposed on the speaker body to vibrate the cone paper, wherein the cone paper includes at least two layers made of different materials. | 03-17-2011 |
| 20110164782 | LOUDSPEAKER DRIVER SUSPENSION - A loudspeaker driver has a diaphragm connected to a surrounding frame by a roll suspension which extends around the diaphragm and within the frame. The roll suspension connects the outer edge of the diaphragm to the inner edge of the frame and flexes as the diaphragm is displaced to and fro axially relative to the frame. In order to provide for better integrity of the roll suspension during its displacement, and reduce unwanted deformation and concomitant distortion, the suspension roll is provided with pleats extending across the roll suspension transversely to the direction of axial movement of the diaphragm to create a series of undulations (peaks and troughs) around the perimeter of the roll suspension. In transverse cross-section, the roll suspension is parabolic. The roll suspension varies continuously between each peak and adjacent trough. Preferably, outer surfaces of each peak and adjacent trough merge to a common point on the outer edge of the roll, while their inner surfaces merge to a common point on the outer edge of the roll, such that the peaks and troughs effectively disappear. | 07-07-2011 |
| 20120008818 | SPEAKER DEVICE - A speaker device includes: an acoustic diaphragm having a given shape and made of a material having physical anisotropy; and an excitation means attached to the acoustic diaphragm for exciting vibration components in consideration of a direction corresponding to the physical anisotropy. | 01-12-2012 |
