Diaphragm Patents (Class 181/157)
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Publication number: 20130161122Abstract: A vibration-lead plate for a flat speaker is mounted between a voice coil plate and a vibration plate for increasing vibrational efficiency and removing the lead wire of a voice coil. The vibration-lead plate includes: a coil plate-spline, mounted between a voice coil plate having a voice coil formed in the shape of a spiral track and a vibration plate to vibrate according to the movement of the voice coil plate for generating sound, and formed in the center so as to be adhered to the voice coil plate; an edge-spline, connected to one side of the coil plate-spline and the edge of the vibration plate so as to variably correspond to vibrations; and a vibration plate outside portion, connected to one side of the edge-spline and adhered to the outside portion of the edge of the vibration plate.Type: ApplicationFiled: August 16, 2011Publication date: June 27, 2013Applicant: EXELWAY INC.Inventor: Dong-Man Kim
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Publication number: 20130070953Abstract: A loudspeaker radiating diaphragm can be stiffened to help increase the breakup frequency to above the working frequency range of the driver concerned, by forming it of a moulded part and an attached formed part. The moulded part is a radiating surface with stiffening ribs. The formed part is a thin surface of high modulus material, attached to the rear of the ribs. The overall structure can have significantly higher stiffness than either of the two parts. This helps in designing a loudspeaker driver that does not breakup within its working frequency range.Type: ApplicationFiled: April 26, 2011Publication date: March 21, 2013Applicant: GP Acoustics (UK) LimitedInventors: Mark Alexander Dodd, Jack Anthony Oclee-Brown, Julia Davidson
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Publication number: 20130056296Abstract: A diaphragm for a loudspeaker including a plurality of masses, each mass being substantially the same radial distance from the centre of the diaphragm, the plurality of masses being divided into two arrays, each array including one or more individual masses, wherein, in use, at a selected frequency, the pair of arrays act to produce a dominant bending moment, and, the centre of the diaphragm lies substantially on the axis of the dominant bending moment, wherein, the dominant bending moment is the bending moment produced by the combination of masses which has the greatest magnitude, if they produce more than one bending moment.Type: ApplicationFiled: February 21, 2011Publication date: March 7, 2013Applicant: PSS BELGIUM N.V.Inventors: Karel Goossens, Onur Ilkorur, David Corynen, Charalampos Ferekidis, Karl-Heinz Fink
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Publication number: 20130037342Abstract: Disclosed are electromagnetic linear actuators used in acoustic vibratory sources for marine seismic surveying. An embodiment discloses a linear actuator for acoustic sources, comprising: magnetic circuitry comprising a gap; and a coil assembly comprising: a drive coil, wherein at least a first portion of the drive coil is configured to be moved in a linear path in the gap; a pair of ferromagnetic coil guides positioned on either side of the linear path; a first ferromagnetic extension extending laterally from the first portion of the drive coil; and a transmission element coupled to a top side of the first portion of the drive coil. Embodiments also disclose acoustic vibratory sources, marine seismic survey systems, and methods of marine seismic surveying.Type: ApplicationFiled: September 2, 2011Publication date: February 14, 2013Applicant: PGS Geophysical ASInventor: Sven GĂ´ran Engdahl
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Patent number: 8320604Abstract: Composite loudspeaker cones that include an interstitial layer of material having a core density below 600 kg/m3 and a Young's modulus greater than 0.2 GPa, such as balsa wood, interposed between a first carbon fiber layer and a second carbon fiber layer and method of making same.Type: GrantFiled: April 23, 2008Date of Patent: November 27, 2012Inventors: Richard Vandersteen, Michael P. Latvis, Jr.
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Publication number: 20120269379Abstract: A diaphragm and a loudspeaker using the diaphragm are disclosed. The diaphragm has a diaphragm body with at least one projection formed thereon, to reduce peaks in the medium-high frequency section of the frequency response curve for the loudspeaker, and make the frequency response curve smooth in medium-high frequency.Type: ApplicationFiled: March 27, 2012Publication date: October 25, 2012Applicant: SUZHOU SONAVOX ELECTRONICS CO., LTD.Inventors: Peng GAO, Guoqiang Chai, Jianming Zhou
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Patent number: 8256567Abstract: A diaphragm is disclosed. The diaphragm includes a dome part, an edge part connected to an outer peripheral part of the dome part. The dome part includes a main body defining a first surface and a second surface opposite to the first surface, a first dome part connected to the first surface, and a second dome part connected to the second surface.Type: GrantFiled: December 26, 2010Date of Patent: September 4, 2012Assignees: AAC Acoustic Technologies (Shenzhen) Co., Ltd., AAC Technologies Pte. Ltd.Inventors: Lin-Zhen Li, Ji-Liang Lu, Wen-Tao Jiang
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Patent number: 8213671Abstract: A speaker having improved sound quality by reducing a phase difference and also having an outstanding outward appearance is provided. In a speaker comprising a vibrating element 10, a drive unit 20 for vibrating the vibrating element 10, and a frame 30 supporting the vibrating element 10 and the drive unit 20, the vibrating element 10 comprises a front face region 10A which forms a continuously curved face having a convex-shaped cross-sectional portion T1 formed in its central portion and a concave-shaped cross-sectional portion T2 formed around the portion T1, and a connecting region 10B located on the rear side of the front face region 10A and connected to the drive unit 20.Type: GrantFiled: November 1, 2006Date of Patent: July 3, 2012Assignees: Pioneer Corporation, Tohoku Pioneer CorporationInventors: Kyoichi Matsuda, Toshihiro Hikichi, Daisuke Itoh, Teruaki Kaiya
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Publication number: 20120160597Abstract: A diaphragm is disclosed. The diaphragm includes a dome part, an edge part connected to an outer peripheral part of the dome part. The dome part includes a main body defining a first surface and a second surface opposite to the first surface, a first dome part connected to the first surface, and a second dome part connected to the second surface.Type: ApplicationFiled: December 26, 2010Publication date: June 28, 2012Inventors: Lin-Zhen Li, Ji-Liang Lu, Wen-Tao Jiang
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Patent number: 8191674Abstract: A loudspeaker horn includes a pair of opposed flared sides defining a passage diverging to a mouth, and a vane positioned in the passage for steering sound waves through the passage. The vane may have a straight configuration and be either centrally located between the flared sides or laterally offset in the diverging passage. The vane may be fixed in position or, more preferably, be pivotable so as to be adjustable before each new use according to conditions at that use. The horn may be part of a horn unit that includes a funnel for feeding sound to the horn, and the horn or horn unit may be part of a horn loudspeaker.Type: GrantFiled: April 21, 2006Date of Patent: June 5, 2012Assignee: Martin Audio LimitedInventor: Ambrose Thompson
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Patent number: 8139811Abstract: A speaker 1 includes: a frame 4; a magnetic circuit 2; and a vibrating unit 3. The magnetic circuit 2 is attached to the frame 4. The vibrating unit 3 is received in the frame 4, and includes a drive cone 14 and a diaphragm 15 vibrated by the magnetic circuit 2. A space surrounded by the drive cone 14, the diaphragm 15 and the frame 4 is sealed. An edge unit 17 is attached to an outer edge of the drive cone 14. The edge unit 17 is in an arc sectional shape, and integrally includes two roll parts 47 arranged coaxially to each other.Type: GrantFiled: November 17, 2006Date of Patent: March 20, 2012Assignees: Pioneer Corporation, Tohoku Pioneer CorporationInventors: Daisuke Itoh, Teruaki Kaiya, Kenta Fujimoto
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Publication number: 20120061175Abstract: A board includes a board body having a striking face and first and second symmetric axes defined in the striking face and perpendicular to each other and intersect with each other at a center of the striking face. The body includes first and second edges symmetric to each other relative to the first symmetric axis. The body further includes first and second wavy edges symmetric to each other relative to the second symmetric axis. The striking face is surrounded by the first and second edges and the first and second wavy edges. When an area around the center of the striking face is stricken, a plurality of natural frequencies is generated. The overtones of the natural frequencies are approximately integer multiple of the fundamental frequency, providing a harmonic sound and enhancing the sweetness of the sound.Type: ApplicationFiled: April 14, 2011Publication date: March 15, 2012Inventors: Bor-Tsuen Wang, Hsiao-Ming Chien
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Patent number: 8126179Abstract: A diaphragm for outputting sound by vibrating has a hole of a predetermined shape that allows another member to extend therethrough. A sound output apparatus includes a first member, the diaphragm, and a second member. The first member extends through the hole of the diaphragm, and the first member is screwed into the second member.Type: GrantFiled: May 23, 2008Date of Patent: February 28, 2012Assignee: Sony CorporationInventors: Tetsujiro Kondo, Junichi Shima, Akihiko Arimitsu, Takuro Ema
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Publication number: 20120043157Abstract: A three dimensional acoustic passive radiator diaphragm. A diaphragm a three dimensional volume. An acoustic driver radiates pressure waves into the three dimensional volume to cause the diaphragm to expand and contract. The three dimensional passive radiator may include a core of a porous, compressible material.Type: ApplicationFiled: August 19, 2010Publication date: February 23, 2012Inventors: Jason D. Silver, Roman N. Litovsky
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Patent number: 8094860Abstract: The present invention generally relates to stereo sound boxes, and more particularly to a sound box assembly containing micro stereo sound boxes joined magnetically together. The sound box assembly contains at least a pair of sound boxes with magnets of opposite polarities, respectively, so that the sound boxes could be magnetically attracted together for convenient transportation and then later could be easily detached for placing apart to achieve superior stereo sound.Type: GrantFiled: December 30, 2008Date of Patent: January 10, 2012Inventor: Tian-Xu Huang
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Publication number: 20110315472Abstract: An intake sound generation apparatus for an internal combustion engine, including an introduction duct connected to an intake passage of an intake system of the engine, a vibration member including a diaphragm portion which is vibrated by intake pulsation in the intake system, and a bellows portion configured to promote vibration of the diaphragm portion, the vibration member being so disposed as to cover one end of the introduction duct, and a resonance duct having one end connected to the introduction duct through the vibration member and the other end opened to an outside of the intake sound generation apparatus, the resonance duct acting to increase and emit a sound pressure of intake sound produced by vibration of the vibration member. A central axis of at least one of the introduction duct and the resonance duct is located offset relative to a central axis of the vibration member.Type: ApplicationFiled: June 21, 2011Publication date: December 29, 2011Inventors: Katsuhisa OHTA, Junji Yoshida
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Publication number: 20110255720Abstract: An electret diaphragm and a speaker using the same are provided. The electret diaphragm includes an electret layer, a bonding layer adhered to a surface of the electret layer, and an aluminum (Al) electrode layer adhered on the bonding layer. The electret layer at least includes ethylene group polymer. A material of the bonding layer is ethylene-ethyl-acrylate (EEA) or ethylene-vinyl acetate (EVA).Type: ApplicationFiled: October 22, 2010Publication date: October 20, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Che-I Kao, Chih-Kung Lee, Wen-Ching Ko, Chang-Ho Liou, Ing-Yih Leu, Ming-Daw Chen, Yi-Jen Chan, Chien-Kai Tseng
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Publication number: 20110240401Abstract: A carbonaceous acoustic diaphragm whose density is reduced while retaining the required stiffness is provided. Carbon nanofibers and spherical particles of PMMA are mixed into a carbon-containing resin such as a polyvinyl chloride resin, and the mixture is carbonized to vaporize the spherical particles of PMMA, thereby forming a porous structure having pores with the carbon nanofibers in a powdered form uniformly dispersed through amorphous carbon. By forming a multilayer structure by combining the porous layer with a layer that does not use PMMA, the density can be further reduced while retaining the stiffness.Type: ApplicationFiled: December 8, 2009Publication date: October 6, 2011Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Takeshi Suzuki, Atsunori Satake, Noboru Kanba, Akihito Mitsui, Yoshihisa Suda
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Publication number: 20110235829Abstract: Disclosed is a diaphragm includes a vibrating member, a plurality of supporting members extending from a periphery of the vibrating member along a direction away from a center of the diaphragm, and a plurality of separating portions each located between two adjacent supporting members. Each of the supporting members defines a first beam, a second beam, and at least one slit between the first and second beams.Type: ApplicationFiled: December 26, 2010Publication date: September 29, 2011Inventors: Bin YANG, Rui Zhang
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Publication number: 20110232990Abstract: A speaker vibrating body vibrated by a driving part includes a plurality of diaphragms vibratably supported by a static part supporting said driving part and a diaphragm connecting part, provided between a first diaphragm and a second diaphragm among said plurality of diaphragms, coupling said first diaphragm and said second diaphragm and synchronously moving said first diaphragm and said second diaphragm toward or away from each other.Type: ApplicationFiled: December 25, 2009Publication date: September 29, 2011Applicants: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Hiroyuki Kobayashi, Toshihiro Hikichi, Takuei Nagasawa, Koji Takayama, Koji Maekawa, Kenichi Oshima, Yasuhisa Abe, Minoru Horigome
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Patent number: 7946378Abstract: 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.Type: GrantFiled: September 23, 2010Date of Patent: May 24, 2011Assignee: NXP B.V.Inventors: Susanne Windischberger, Helmut Wasinger, Josef Lutz
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Patent number: 7913808Abstract: A water-resistant composite paper, suitable for use as a loudspeaker component, is made from a composition including wood pulp, hydrophobic fibers, and stiffening fibers that retain stiffness when wet. In some examples, fibrillated acrylic fibers and glass fibers are used.Type: GrantFiled: March 27, 2008Date of Patent: March 29, 2011Assignee: Bose CorporationInventors: Agota F. Fehervari, Samuel D. Parrish, Martin J. Schad, Mark P. Temple, Robert E. Evans, Christopher D. Weaver
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Patent number: 7877856Abstract: An edge (29) for supporting a diaphragm assembly (100) with respect to a frame (26) is bonded to the frame (26) along the outer periphery thereof and joined to a diaphragm (27) in a position more peripherally inward than a voice coil (28) along the inner periphery thereof. The edge (29) partly overlaps diaphragm (27). This structure allows downsizing of the speaker, without reducing the sizes of a permanent magnet (21) and the edge (29).Type: GrantFiled: May 12, 2009Date of Patent: February 1, 2011Assignee: Panasonic CorporationInventors: Takanori Fukuyama, Tomoyasu Takase, Koji Sano, Hiroshi Yano, Masanori Nakano, Shigeru Tomoeda, Kazuki Honda, Kazuya Yamasaki, Kazutaka Kubo, Takeshi Shimokawatoko, Mitsutaka Enomoto, Masahide Sumiyama
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Publication number: 20110019866Abstract: 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.Type: ApplicationFiled: September 23, 2010Publication date: January 27, 2011Applicant: NXP B.V.Inventors: Susanne WINDISCHBERGER, Helmut WASINGER, Josef LUTZ
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Patent number: 7866439Abstract: A membrane (2?) for an electroacoustic transducer (1) is disclosed having a first area (A1), a second area (A2), which is arranged for translatory movement in relation to said first area (A1), and a third area (A3), which connects said first (A1) and said second area (A2), wherein local, planar spring constants (psc) along a closed line (L) within said third area (A3) encompassing said second area (A2), are determined in such a way that local, translatory spring constants (tsc) along said line (L) in a direction (DM) of said translatory movement are substantially constant or exclusively have substantially flat, mutual changes.Type: GrantFiled: May 19, 2006Date of Patent: January 11, 2011Assignee: NXP B.V.Inventors: Susanne Windischberger, Helmut Wasinger, Josef Lutz
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Patent number: 7686129Abstract: A horn and a loudspeaker employing the horn are disclosed that include a body having a throat that expands outwardly to a mouth such that a first interior area defined by the throat is smaller than a second interior area defined by the mouth. A plurality of raised surface areas is located on an interior surface of the body. The raised surface areas extend into a hollow interior defined by the body a predetermined distance and are utilized to channel sound waves through the body and out the mouth.Type: GrantFiled: August 30, 2007Date of Patent: March 30, 2010Assignee: Klipsch LLCInventor: Rogelio Delgado, Jr.
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Patent number: 7644801Abstract: A membrane (2) for an electroacoustic transducer (1) is disclosed, wherein a thickness (d) of said membrane (2) and an average Young's modulus (Eavg) of said membrane (2) are chosen in such a way that the critical load (Fbc), which causes the membrane (2) to buckle and/or crinkle, is increased compared to a reference membrane. The reference membrane made of Polycarbonate has the same shape, dimension, and stiffness in its direction of movement (MOV) as said membrane (2). According to the result of investigations on buckling and/or crinkling, said effect occurs with different critical buckling/crinkling loads for membranes of the same shape and dimension, but made of different materials, even when the stiffness of the membranes in their direction of movement—and hence their resonant frequency—is identical.Type: GrantFiled: March 1, 2006Date of Patent: January 12, 2010Assignee: NXP B.V.Inventors: Erich Klein, Ewald Frasl, Susanne Windischberger
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Patent number: 7591344Abstract: There is provided: a lightweight peripheral component for audio equipment having a good balance between a large internal loss and excellent mechanical properties, and having excellent thermal resistance, dimensional stability, and an excellent S/N ratio; and a speaker using the same. The peripheral component for audio equipment of the present invention contains a polyphenylene ether-based resin (A), a polystyrene-based resin (B), and a polyolefin-based resin (C).Type: GrantFiled: March 16, 2006Date of Patent: September 22, 2009Assignee: Onkyo CorporationInventor: Takeshi Fujitani
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Publication number: 20090038878Abstract: An acoustic diaphragm includes a diaphragm formed of a uniform material and a first standing wave suppression member provided on a surface of the diaphragm along a first direction of passing through a center of the diaphragm.Type: ApplicationFiled: August 6, 2008Publication date: February 12, 2009Applicant: VICTOR COMPANY OF JAPAN, LIMITEDInventors: Satoshi Imamura, Yunji Ilno, Shinji Kamimura
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Patent number: 7475598Abstract: An electromechanical force transducer comprises at least two adjacent resonant elements and a damping layer coupled between their adjacent faces. The damping layer is selected so that the output is increased in the region of internal cancellation in the transducer. The adjacent resonant elements are beam-like and have substantially the same length. The resonant elements may be supported on a stub of low rotational stiffness whereby the fundamental resonance of the transducer becomes less dependent on bending motion of the transducer and more rigid body-like. The transducer may also include a member for increasing the rotational impedance of the transducer.Type: GrantFiled: March 10, 2006Date of Patent: January 13, 2009Assignee: New Transducers LimitedInventors: Mark William Starnes, James John East, Neil Simon Owen, Steven Mark Hoyle
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Patent number: 7467686Abstract: On one surface of a piece of wooden sheet, a cloth or paper is adhered to make an adhered sheet. An approximately V-shaped notch is provided on the adhered sheet, the adhered sheet is wetted to be softened, and a lubricant which acts to keep water is impregnated thereinto. Edge portions of the notch are overlapped, and the adhered sheet is tentatively molded in an approximately horn shape by a first hot press molding. The adhered sheet is then dried, impregnated with thermosetting resin, and half-dried. The adhered sheet is subject to a second hot press molding. A moisture-proof agent is applied on the adhered sheet, a center hole for a voice coil and periphery are removed to make a speaker diaphragm having a predetermined dimension and shape.Type: GrantFiled: February 17, 2004Date of Patent: December 23, 2008Assignee: Victor Company of Japan, LimitedInventors: Satoshi Imamura, Takeshi Hirano, Tomoaki Ogata, Toshikatsu Kuwahata
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Publication number: 20080277195Abstract: A device for generating an acoustic signal in a fluid includes an engine operable to repeat a thermodynamic process to vibrate a membrane of the engine to generate an acoustic signal having more than one period. The thermodynamic process includes heating mass inside a chamber of an engine to generate pressure inside the chamber; in response to generating the pressure, moving in a first direction a portion of a membrane of the engine; removing mass from inside the chamber to decrease the pressure inside the chamber; and in response to decreasing the pressure inside the chamber, moving the membrane portion in a second direction. Because the engine repeats the thermodynamic process, the engine can generate and sustain an acoustic signal for a significant amount of time.Type: ApplicationFiled: May 12, 2008Publication date: November 13, 2008Applicant: Lockheed Martin CorporationInventors: John Rapp, N. John Nagurny, Curry Farrior, Robert J. Howard
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Publication number: 20080277196Abstract: A device for generating an acoustic signal in a fluid includes an engine operable to repeat a thermodynamic process to vibrate a membrane of the engine to generate an acoustic signal having more than one period. The thermodynamic process includes heating mass inside a chamber of an engine to generate pressure inside the chamber; in response to generating the pressure, moving in a first direction a portion of a membrane of the engine; removing mass from inside the chamber to decrease the pressure inside the chamber; and in response to decreasing the pressure inside the chamber, moving the membrane portion in a second direction. Because the engine repeats the thermodynamic process, the engine can generate and sustain an acoustic signal for a significant amount of time.Type: ApplicationFiled: May 12, 2008Publication date: November 13, 2008Applicant: Lockheed Martin CorporationInventors: John Rapp, Nicholas John Nagurny, Robert J. Howard, Jared Gilbert, Eliot Goldstein, John Gornowich, Matthew Herbek, Nicole Anderson, Austin Lu, Jennifer Dolson, Ariel Brown, Gordon Briggs
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Patent number: 7450976Abstract: A portable electronic device of the present invention includes a cabinet and a speaker placed inside the cabinet. The cabinet has one or more sound radiating holes in an area opposed to a front face of the speaker. A dustproof plate formed by attaching a dustproof net and a reinforcing sheet to each other is placed on the front face of the speaker or an inner face of the cabinet opposed to the front face. The reinforcing sheet has a plurality of openings formed for passing through sound waves from the speaker.Type: GrantFiled: April 27, 2005Date of Patent: November 11, 2008Assignee: Sanyo Electric Co., Ltd.Inventor: Toshiyuki Hoshijima
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Publication number: 20080230304Abstract: A membrane (2?) for an electroacoustic transducer (1) is disclosed having a first area (A1), a second area (A2), which is arranged for translatory movement in relation to said first area (A1), and a third area (A3), which connects said first (A1) and said second area (A2), wherein local, planar spring constants (psc) along a closed line (L) within said third area (A3) encompassing said second area (A2), are determined in such a way that local, translatory spring constants (tsc) along said line (L) in a direction (DM) of said translatory movement are substantially constant or exclusively have substantially flat, mutual changes.Type: ApplicationFiled: May 19, 2006Publication date: September 25, 2008Applicant: NXP B.V.Inventors: Susanne Windischberger, Helmut Wasinger, Josef Lutz
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Publication number: 20080202845Abstract: A membrane (2) for an electroacoustic transducer (1) is disclosed, wherein a thickness (d) of said membrane (2) and an average Young's modulus (Eavg) of said membrane (2) are chosen in such a way that the critical load (Fbc), which causes the membrane (2) to buckle and/or crinkle, is increased compared to a reference membrane. The reference membrane made of Polycarbonate has the same shape, dimension, and stiffness in its direction of movement (MOV) as said membrane (2). According to the result of investigations on buckling and/or crinkling, said effect occurs with different critical buckling/crinkling loads for membranes of the same shape and dimension, but made of different materials, even when the stiffness of the membranes in their direction of movement—and hence their resonant frequency—is identical.Type: ApplicationFiled: March 1, 2006Publication date: August 28, 2008Applicant: NXP B.V.Inventors: Erich Klein, Ewald Frasl, Susanne Windischberger
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Patent number: 7306073Abstract: 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), wherein the middle area (50) comprises groups of stiffening grooves (54, 55, 56, 57) which extend parallel to radial directions and of which a first group of long stiffening grooves (54, 55, 56) extends up to the depression (52), said connecting channel (53) issuing into two of the long stiffening grooves (55, 56), thus interconnecting these two long stiffening grooves (55, 56).Type: GrantFiled: October 31, 2003Date of Patent: December 11, 2007Assignee: NXP B.V.Inventor: Ewald Frasl
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Patent number: 7225895Abstract: 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 edge of the voice coil bobbin with that ring mating with a flat diaphragm at a right angle directly above the top edge of the bobbin. The outer edge of the diaphragm connects to the inner edge of the surround at the point where a sloping side of the “triangle” is also connected and slopes down to the top edge of the bobbin where the opposite end is connected. The outer portion of the diaphragm provides the third side of the triangle.Type: GrantFiled: January 8, 2004Date of Patent: June 5, 2007Inventor: Joseph Yaacoub Sahyoun
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Patent number: 7185735Abstract: 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 edge of the voice coil bobbin with that ring mating with a flat diaphragm at a right angle directly above the top edge of the bobbin. The outer edge of the diaphragm connects to the inner edge of the surround at the point where a sloping side of the “triangle” is also connected and slopes down to the top edge of the bobbin where the opposite end is connected. The outer portion of the diaphragm provides the third side of the triangle.Type: GrantFiled: February 19, 2004Date of Patent: March 6, 2007Inventor: Joseph Yaacoub Sahyoun
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Patent number: 7174990Abstract: The invention is a suspension element having an outer edge and an inner edge. The suspension element, such as a spider or surround, varies in shape along at least a portion of the suspension element to help relieve both the radial and tangential stress placed on the suspension element when it is stretched. The shape employed in the suspension element allows the suspension element to stretch more easily, creating a higher performance speaker of the same size by increasing the diaphragm excursion and voice coil movement.Type: GrantFiled: February 7, 2005Date of Patent: February 13, 2007Assignee: Harman International Industries, IncorporatedInventors: Brendon Stead, Clayton Williamson, Mark Trainer
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Patent number: 7045768Abstract: A displacement/quantity of light converter in which sensitivity to a micro displacement due to sound of a diaphragm, or the like, can be enhanced easily. In the displacement/quantity of light converter where a light emitting part (2) and a light receiving part (3) are disposed oppositely to a diaphragm (1), light emitted from the light emitting part (2) and reflected off the diaphragm (1) is received at the light receiving part (3), and a displacement of the diaphragm (1) is converted into an output from the light receiving part (3), a concave diaphragm is used and the concave face is directed toward the light emitting part (2) and the light receiving part (3). According to the arrangement, light emitted from the light emitting part (2) and reflected off the diaphragm (1) impinges efficiently on the light receiving part (3) in the form of focused light.Type: GrantFiled: February 19, 2002Date of Patent: May 16, 2006Assignee: Kabushiki Kaisha KenwoodInventors: Toru Shinzou, Yoshio Sakamoto
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Patent number: 6889796Abstract: An annular surround for a loudspeaker cone wherein a radial cross-section of the surround varies around the circumferential extent of the surround, so as to accommodate peripheral expansion or contraction of the surround by bending. Thus a trough shaped cross-section of the surround may vary sinusoidally with angle around the polar axis of the surround between a semicircular and semielliptical cross-section. The trough section may bland to an adjacent portion of the surround by a fillet which also varies sinusoidally in cross-section in phase with the variation of the trough.Type: GrantFiled: January 28, 2002Date of Patent: May 10, 2005Assignee: Goodmans Loudspeakers LimitedInventors: Nicholas Pocock, Simon Yorick Pettman
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Patent number: 6863152Abstract: 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 basket on the maximum inward excursion of the voice coil and diaphragm such that the suspension operational depth is not the limiting factor of the overall height of the speaker. The elements of the suspension system are designed to maximize the spacing between the inner and outer portions of the suspension, thus minimizing the possibility of wobble in the speaker. The speaker design maximizes air movement in a given mounting depth with a configuration that optimizes the operation of the moving parts that complements the fixed mechanical structural configuration of the non-moving parts in either an overhung or underhung configuration. The design also accommodates user replacement of the voice coil or cone.Type: GrantFiled: September 30, 2003Date of Patent: March 8, 2005Inventor: Joseph Yaacoub Sahyoun
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Patent number: 6863153Abstract: A speaker diaphragm 10 is provided having an improved quality of radiation sounds and a good outer appearance. The speaker diaphragm has in its slanted area projections typically represented by a peak line 4 and recesses typically represented by a bottom line 5. The projection typically represented by the peak line extends radially from the central area to the edge portion, and curves along the circumferential direction as it comes near to the edge portion. While the speaker diaphragm 10 vibrates at a large amplitude and moves toward the bottom side thereof, a rotation force is applied to air which is likely to concentrate upon the central area to thereby lower the air pressure to the central area. The speaker diaphragm 10 has a three-dimensional structure like a screw propeller so that the mechanical strength of the speaker diaphragm 10 can be increased over the whole area thereof and division vibrations can be suppressed.Type: GrantFiled: April 24, 2000Date of Patent: March 8, 2005Assignee: Kabushiki Kaisha KenwoodInventors: Junichi Hayakawa, Masaya Kasai
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Patent number: 6851513Abstract: The invention is a suspension element having an outer edge and an inner edge. The suspension element, such as a spider or surround, varies in shape along at least a portion of the suspension element to help relieve both the radial and tangential stress placed on the suspension element when it is stretched. The shape employed in the suspension element allows the suspension element to stretch more easily, creating a higher performance speaker of the same size by increasing the diaphragm excursion and voice coil movement.Type: GrantFiled: March 27, 2002Date of Patent: February 8, 2005Assignee: Harvard International Industries, IncorporatedInventors: Brendon Stead, Clayton C. Williamson, Mark Trainer
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Publication number: 20040238267Abstract: 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 part (1a) of the diaphragm (1) having a pressure receiving surface part (1d) and the reflective part (1a), and light is radiated from the light emitting element to the reflective part (1a) of the diaphragm (1) and the reflected light from the reflective part (1a) is received by the light receiving element, whereby the position of the diaphragm (1) can be detected.Type: ApplicationFiled: December 8, 2003Publication date: December 2, 2004Inventors: Yoshio Sakamoto, Takahiro Imai
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Patent number: 6814181Abstract: There is provided an electrically conductive damper device for a speaker in which local bending is reduced and break-downs of material of the damper and metallic wires incorporated in the damper are prevented, by additionally providing one or more sheets of damper fabric as a reinforcing damper 142 and by bonding it to a main damper 141 by way of various kinds of resin, in order to reinforce a neck portion of the electrically conductive damper. Further, properties of the damper can be adjusted by varying an outer diameter of the reinforcing damper 142, or by selecting the resin to be employed as an adhesive.Type: GrantFiled: October 22, 2001Date of Patent: November 9, 2004Assignees: Pioneer Corporation, Tohoku Pioneer CorporationInventors: Yasuhisa Abe, Koji Matsumoto, Koji Takayama, Hiroyuki Tomiyama
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Patent number: 6810126Abstract: A panel transducer includes a diaphragm with areas of multiple electrical conductors, two rows of magnetic bars, two metal plates and a clamping frame. The diaphragm is clamped in the clamping frame and is positioned between the two rows of magnetic bars. Each row of magnetic plates is in close proximity to the clamped diaphragm. Each metal plate has holes. The holes correspond to spacing areas between the magnetic bars and acoustically connect the diaphragm to outside media. The magnetic bars are sequentially located on the metal plates with spacing between the magnetic bars. The diaphragm is secured to the clamping frame and has an active surface area under tension spaced inwardly of the clamping frame. There are no side magnetic bars at the ends of each of the row. Absorbing strips are used in place of the absent magnetic bars filling the space between the side magnetic bars and the clamping frame.Type: GrantFiled: October 24, 2001Date of Patent: October 26, 2004Assignee: BG CorporationInventor: Igor Levitsky
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Publication number: 20040195039Abstract: 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 edge of the voice coil bobbin with that ring mating with a flat diaphragm at a right angle directly above the top edge of the bobbin. The outer edge of the diaphragm connects to the inner edge of the surround at the point where a sloping side of the “triangle” is also connected and slopes down to the top edge of the bobbin where the opposite end is connected. The outer portion of the diaphragm provides the third side of the triangle.Type: ApplicationFiled: February 19, 2004Publication date: October 7, 2004Inventor: Joseph Yaacoub Sahyoun
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Publication number: 20040188174Abstract: 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 edge of the voice coil bobbin with that ring mating with a flat diaphragm at a right angle directly above the top edge of the bobbin. The outer edge of the diaphragm connects to the inner edge of the surround at the point where a sloping side of the “triangle” is also connected and slopes down to the top edge of the bobbin where the opposite end is connected. The outer portion of the diaphragm provides the third side of the triangle.Type: ApplicationFiled: January 8, 2004Publication date: September 30, 2004Inventor: Joseph Yaacoub Sahyoun