With Damping Means Patents (Class 181/166)
  • Patent number: 11395069
    Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: July 19, 2022
    Assignee: B&W Group Ltd.
    Inventors: Thomas O'Brien, Martial André Robert Rousseau
  • Patent number: 11228841
    Abstract: Disclosed herein is a speaker. The speaker includes a magnetic circuit device provided to generate a magnetic force, a voice coil configured to vibrate by the magnetic circuit device, and a damper configured to guide a movement of the voice coil, wherein the damper comprises a first portion, and a second portion having a different weave than the first portion.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: January 18, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Eui Han Yoon
  • Patent number: 11218797
    Abstract: A loudspeaker arrangement having a first loudspeaker comprising a first sound radiating surface and a first loudspeaker basket, and a second loudspeaker comprising a second sound radiating surface and a second loudspeaker basket. The first loudspeaker and the second loudspeaker are arranged opposite each other in a first direction, a cavity is formed between a front side of the first loudspeaker and a front side of the second loudspeaker, and the first loudspeaker basket is directly coupled to the second loudspeaker basket.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: January 4, 2022
    Inventors: Joerg Prokisch, Michael Schuster, Andreas Pfeffer, Manfred Aigner
  • Patent number: 10869131
    Abstract: An example magnet assembly for a loudspeaker includes a first permanent magnet with a cuboid shape, the first magnet encompassing a central opening, and a second permanent magnet with a cuboid shape, the second magnet positioned coaxially within the opening of the first magnet and forming a rectangular-ring shaped first gap therebetween, the first and second magnets being axially poled in opposed directions. The assembly further includes a soft-magnetic base plate connected across one side of the first and second magnets, a soft-magnetic first pole piece having a first face and positioned on the first magnet, and a soft-magnetic second pole piece having a second face and positioned on the second magnet. The first pole piece and the second pole piece form a rectangular-ring shaped second gap between the first and second faces such that magnetic flux is focused in the second gap.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: December 15, 2020
    Inventors: Guenther Weber, Marc-Olivier Chauveau, Armin Prommersberger
  • Patent number: 10812909
    Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: October 20, 2020
    Assignee: EVA Automation, Inc.
    Inventors: Thomas O'Brien, Martial André Robert Rousseau
  • Patent number: 10805714
    Abstract: A panel audio loudspeaker includes a panel extending in a plane. The loudspeaker also includes an actuator coupled to one side of the panel and configured to couple vibrations to the panel to cause the panel to emit audio waves. The actuator includes a rigid frame attached to a surface of the panel, the rigid frame includes a portion extending perpendicular to the panel surface and a plate extending parallel to the panel. The actuator also includes a magnet assembly and a magnetic coil forming a magnetic circuit. The actuator further includes at least one flexible member connecting the magnetic circuit to the portion of the rigid frame extending perpendicular to the panel surface. The actuator also includes a compliant member positioned between the magnetic circuit and the panel, the compliant member being configured to increase output of the loudspeaker compared to the actuator without the compliant member.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: October 13, 2020
    Assignee: Google LLC
    Inventors: Rajiv Bernard Gomes, James East
  • Patent number: 10560793
    Abstract: A diaphragm for a loudspeaker may include a conductive coupler, a voice coil having a voice coil lead, where the voice coil lead is positioned in conductive contact with the conductive coupler, and a terminal lead, where the terminal lead is positioned in conductive contact with the conductive coupler, and where the voice coil lead and the terminal lead are attached to the conductive coupler.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: February 11, 2020
    Assignee: Sonos, Inc.
    Inventors: Richard Warren Little, Daniel Liu, Derrick Pierce, Ernie Latham-Brown
  • Patent number: 10547949
    Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: January 28, 2020
    Assignee: EVA Automation, Inc.
    Inventors: Thomas O'Brien, Martial André Robert Rousseau
  • Patent number: 10524055
    Abstract: An earphone has a membrane mounted on a membrane carrier and arranged between a top space and a bottom space; a membrane actuator implemented to deflect the membrane in dependence on a control signal; a housing where the membrane carrier, the membrane and the membrane actuator are arranged, wherein the housing has a sound exit, wherein the membrane carrier has openings, and wherein the membrane has holes, and wherein the openings and the holes connect the top space and the bottom space to each another, such that gas can move through the openings and holes between the top space and the bottom space.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: December 31, 2019
    Assignee: Kaetel Systems GmbH
    Inventor: Klaus Kaetel
  • Patent number: 10397705
    Abstract: Multi-layer composites and methods of using the composites as a membrane for electroacoustic transducers. The composites and methods comprise at least one first and one second outer layer, wherein at least one of the cover layers being made from a polypropylene sulfide-plastic having a halogen content not exceeding 550 ppm.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: August 27, 2019
    Assignee: TESA SE
    Inventors: Michael Egger, Gero Maatz
  • Patent number: 10194237
    Abstract: An electronic device is provided which includes a sliding groove, a speaker and a sound conditioner. The first sound outlet and the second sound outlet are connected to the sliding groove and respectively positioned adjacent to the first side wall and the second side wall of the sliding groove. The speaker is positioned relative to the first sound outlet. The sound conditioner extends along the sliding groove for a length that is greater than the distance between the first sound outlet and the second sound outlet. The sound conditioner is slidably positioned in the sliding groove so as to allow the sound produced by the speaker to be transmitted to the outside via either the first sound outlet or the second sound outlet.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: January 29, 2019
    Assignee: ACER INCORPORATED
    Inventors: Feng-Ming Liu, Jia-Ren Chang
  • Patent number: 10170685
    Abstract: A microphone including a casing having a front wall, a back wall, and a side wall joining the front wall to the back wall, a transducer mounted to the front wall, the transducer including a substrate and a transducing element, the transducing element having a transducer acoustic compliance dependent on the transducing element dimensions, a back cavity cooperatively defined between the back wall, the side wall, and the transducer, the back cavity having a back cavity acoustic compliance. The transducing element is dimensioned such that the transducing element length matches a predetermined resonant frequency and the transducing element width, thickness, and elasticity produces a transducer acoustic compliance within a given range of the back cavity acoustic compliance.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: January 1, 2019
    Assignees: The Regents of The University of Michigan, Vesper Technologies Inc.
    Inventors: Karl Grosh, Robert J. Littrell
  • Patent number: 10003872
    Abstract: According to one aspect, there is provided an apparatus comprising a frame and a speaker rigidly attached to the frame, where the speaker comprises a display module and at least one vibrating deformable plate element attached to a bottom surface of the display module and configured to at least partially bend, when actuated, the display module to generate at least one of sound waves or tactile feedback.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: June 19, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Matti Pellikka, Pasi Kemppinen, Klaus Melakari
  • Patent number: 9955266
    Abstract: The present application provides a loudspeaker diaphragm, comprising a first surface layer, a middle layer and a second surface layer, that are in a stacked structure. The loudspeaker diaphragm is characterized in that: at least one surface layer of the first surface layer and the second surface layer has a composite structure which is composed of a base layer and a reinforcing layer, and the other surface layer comprises a base layer; the base layer is a poly(ether-ether-ketone) layer, a polyarylester layer, a polyethylene terephthalate layer, a polyetherimide layer or a composite structure composed of any two of the above layers, and the reinforcing layer is a thermoplastic polyurethane elastomer layer or a thermoplastic elastomer layer. The loudspeaker diaphragm can reduce diaphragm breakage after power test is performed on a loudspeaker product, improve substrate toughness and improve acoustical property of the loudspeaker.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: April 24, 2018
    Assignee: GOERTEK INC.
    Inventors: Xuelu Liu, Jianbin Yang, Ting Wang, Chao Jiang
  • Patent number: 9949036
    Abstract: An electronic device in which a vibration generator is attached to a panel allows further improvement in sound pressure characteristics. An electronic device (1) includes a housing (60), a panel (10) held by the housing (60), a vibration generator (30) attached to the panel (10), and a sheet member (80) between the housing (60) and the panel (10). The panel (10) deforms due to deformation of the vibration generator (30) to transmit human body vibration sound to an object that contacts the panel (10). A first portion of the sheet member (80) is joined to the panel (10), and a second portion of the sheet member (80) differing from the first portion is joined to the housing (60). Between the first portion and the second portion, the sheet member (80) includes an area to which neither the panel (10) nor the housing (60) is attached.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 17, 2018
    Assignee: KYOCERA Corporation
    Inventors: Kenichi Ozasa, Takaaki Watanabe, Hiroto Yahagi, Hayato Mizuno
  • Patent number: 9936302
    Abstract: Some embodiments of the present invention provide miniature sounder which includes a frame and a vibration system and a magnetic path system fixedly connected to the frame. The magnetic path system includes a lower clamping board, a primary magnet disposed on the lower clamping board, secondary magnets disposed on the lower clamping board and arranged around the primary magnet, and a cushion provided on the lower clamping board and located outside the secondary magnets, a gap being provided between two adjacent secondary magnets. The vibration system includes a voice diaphragm, a voice coil which drives the voice diaphragm to vibrate and generate a sound, and a vibrating diaphragm which elastically supports the voice coil. The vibrating diaphragm includes a first connecting portion connected to the voice coil, a second connecting portion connected to the cushion, and a corrugated rim connecting the first connecting portion and the second connecting portion.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: April 3, 2018
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Ronglin Linghu, Bo Xiao
  • Patent number: 9838817
    Abstract: A loudspeaker diaphragm, comprising a dome portion located at central position and a suspension ring portion located at edge position; the dome portion and/or the suspension ring portion comprise silk fabric and thermoplastic polyurethane combined with the silk fabric; and the silk fabric is coated with thermosetting adhesive. The method for manufacturing the loudspeaker diaphragm comprises following steps: a. coating the silk fabric with a thermosetting adhesive under a high temperature, and drying the silk fabric; b. hot pressing and combining the silk fabric and thermoplastic polyurethane to form a membrane; c. pressing the membrane to form the dome portion and/or the suspension ring portion. The dome portion, or both the dome portion and the suspension ring portion of the loudspeaker diaphragm comprise silk fabric coated with a thermosetting adhesive and thermoplastic polyurethane.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: December 5, 2017
    Assignee: GOERTEK INC.
    Inventors: Xiuli Chang, Yonghua Zhang, Chengzong Ji
  • Patent number: 9820055
    Abstract: A transducer system includes a panel having one or more piezo-electric enabled foils and an arrangement of electric contacts coupled to the panel. The one or more piezo-electric enabled foils and the arrangement of electric contacts define a plurality of transducers thereon. Each transducer is associated with a respective region of the panel and with at least two electric contacts that are coupled to at least two zones at that respective region of the panel. The electric contacts are adapted to provide an electric field in these at least two zones to cause different degrees of piezo-electric material deformation in these at least two zones and to thereby deform the respective region of the panel in a direction substantially perpendicular to a surface of the panel, and to thereby enable efficient conversion of electrical signals to mechanical vibrations (acoustic waves) and/or vice versa.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: November 14, 2017
    Assignee: NOVETO SYSTEMS LTD.
    Inventors: Noam Babayoff, Tomer Shani
  • Patent number: 9749735
    Abstract: A waveguide for conducting sound that is generated by a loudspeaker that is acoustically coupled to the waveguide. There is a duct with an external wall, an interior opening circumscribed by the wall, and an outlet, and an air-adsorbent structure coupled to an inside of the external wall of the duct such that the air adsorbent structure lines at least a portion of the wall. The apparent volume ratio of the air adsorbent structure is at least about 1.5.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: August 29, 2017
    Assignee: Bose Corporation
    Inventors: Jason Silver, Lifun Lin, William Berardi
  • Patent number: 9736576
    Abstract: An energy conversion apparatus including a permanent magnet fixed to a predetermined region; and a diaphragm arranged on the permanent magnet, the diaphragm including a coil having a conductor wire pattern formed on the diaphragm, wherein the diaphragm includes a slit formed in the diaphragm.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: August 15, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Michiaki Shinotsuka, Tsutomu Kawase
  • Patent number: 9681233
    Abstract: Embodiments are provided for configurations of a loudspeaker. The loudspeaker may include a frame, a magnetic structure having a magnetic gap, a voice coil suspended within the magnetic gap, a first suspension element, a diaphragm, and a second suspension element. The first suspension element may have an inner rim and an outer rim attached to the frame. The diaphragm may have an outer portion and a continuous central portion attached to the voice coil via a first coupler. The outer portion of the diaphragm may be attached to the inner rim of the first suspension element. The second suspension element may have an inner rim and an outer rim attached to the frame. The inner rim of the second suspension element may be attached to the diaphragm via a second coupler along a circumferential middle section of the diaphragm between the continuous central portion and outer portion of the diaphragm.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: June 13, 2017
    Assignee: Sonos, Inc.
    Inventor: Richard Warren Little
  • Patent number: 9668057
    Abstract: A “free swinging” acoustical ribbon transducer with increased vibrating ribbon element reliability, power handling, and extended useful frequency range. This performance is achieved by forming the corrugations in the vibrating ribbon element at an angle in a range of approximately 45 degrees to 75 degrees with respect to the transverse direction, and preferably in a range of 54 degrees to 74 degrees with respect to the transverse direction.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: May 30, 2017
    Inventor: Richard Allen Jayne
  • Patent number: 9648424
    Abstract: The present invention provides a tablet woofer, including: a vibration diaphragm, at least four mutually independent driving units, and a housing for accommodating and securing the vibration diaphragm and the driving unit. The driving unit includes independent voice coil units and magnetic circuit units, the voice coil units being attached and fixed to the vibration diaphragm. The woofer further includes a FPCB communicating with an internal circuit and an external circuit, and the FPCB is disposed at two sides of the housing, the part of the FPCB disposed on the side of the housing close to the voice coil units being electrically connected to the voice coil units, the part of the FPCB disposed on the side of the housing far away from the voice coil units being electrically connected to the external circuit. The woofer can solve the problems of thick and heavy voice coils and magnet performance surplus.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: May 9, 2017
    Assignee: GOERTEK INC.
    Inventors: Chao Jiang, Jianbin Yang, Zhi Li, Qijin Jiao
  • Patent number: 9584891
    Abstract: An audio accessory comprising one or more speaker units may be used to provide audio output for a media device such as a tablet computer, smartphone, and so forth. The speaker units may be affixed to various surfaces, such as an acoustic panel which serves as a portion of a cover for the media device. The acoustic panel may act as an acoustic radiator which is driven by one or more of the speaker units. When not in use, a pair of the speaker units may be joined together for compact storage.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: February 28, 2017
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Piotr Pawel Blaszczak, Kevin Rea Hoskins, Matthew Kramer, Reuben Eric Martinez, Peter John Thomas Johnson, John Wollersheim, David Charles Buuck
  • Patent number: 9532144
    Abstract: A loudspeaker (100) comprising: an electro-magnetic motor (114) configured to receive electrical signals and, based on the received electrical signals to induce vibrations in a diaphragm (116) for generating a pressure wave; a surround (118) connected to the diaphragm for suspending the diaphragm from a driver chassis (120); and a damper (126) in contact with the surround for damping the vibrations in the surround and the diaphragm.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: December 27, 2016
    Assignee: FUNKTION ONE RESEARCH
    Inventors: Anthony John Andrews, John Newsham
  • Patent number: 9429155
    Abstract: The invention relates to a vane cell pump comprising an electrical pump unit that has a pump chamber into and out of which a fluid can flow and also a rotor with a number of vanes to compress the fluid before flowing out from the pump chamber. The vane cell pump also comprises a sound-damping mechanism into which the fluid can flow after flowing through the pump chamber and that has a sound-damping cover attached to a part of the pump chamber and defining a sound-damping volume. A preliminary sound-damping mechanism with at least one preliminary sound-damping outlet from which the fluid can flow may be arranged within the sound-damping volume, wherein the preliminary sound-damping outlet has a cross-sectional profile tapering in the direction of fluid outflow.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: August 30, 2016
    Assignee: HELLA KGAA HUECK & CO.
    Inventors: Theodor Hüser, Alexander Rüther, Udo Schubert
  • Patent number: 9318940
    Abstract: A device used for generating mechanical vibrations which includes at least one partially elastic closed shaped frame, a coil affixed to a first edge of the closed shaped frame, and an array fixed to a second edge of the closed shaped frame, where the array includes one or more magnets, and the closed shaped frame is configured to restrain the array and coil into an optimal relative position to limit movement of at least one of the coil and the array to a predefined path, where the movement is resultant upon an alternating current being applied to the coil so as to induce mechanical movement between the array and the coil.
    Type: Grant
    Filed: August 28, 2011
    Date of Patent: April 19, 2016
    Inventor: Mor Efrati
  • Patent number: 9232316
    Abstract: The present disclosure relates to a diaphragm that may be used with a mechanical-to-acoustical transducer. The diaphragm may include a layer of optically clear film, a damping layer and another layer of optically clear film. The damping layer may be an adhesive. The diaphragm may also comprise two optically clear films, optionally including a damping layer, wherein the films indicate a desired coefficient of linear thermal expansion in one or both of the machine and transverse directions.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: January 5, 2016
    Assignee: Emo Labs, Inc.
    Inventors: Jeffrey Davis Booth, Stefan Bokaemper, Robert H. White, Jr.
  • Patent number: 9197960
    Abstract: A canalphone system may include a canalphone housing, and a low audio sound-tube to carry a low audio signal to the canalphone housing's outside. The system may also include a high audio sound-tube to carry a high audio signal to the canalphone housing's outside, the high audio sound-tube phase corrected with respect to the low audio sound-tube by sizing it to be longer than the low audio sound-tube, and the high audio sound-tube's length is greater than 3 millimeters but less than 10 millimeters.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: November 24, 2015
    Inventor: Jerry Harvey
  • Patent number: 8942407
    Abstract: 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 molded part and an attached formed part. The molded 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: Grant
    Filed: April 26, 2011
    Date of Patent: January 27, 2015
    Assignee: GP Acoustics (UK) Limited
    Inventors: Mark Alexander Dodd, Jack Anthony Oclee-Brown, Julia Davidson
  • Patent number: 8925674
    Abstract: A canalphone system may include a high audio driver carried by a canalphone housing, and a low audio driver carried by the canalphone housing adjacent to the high audio driver. The system may also include an acoustical-timer to phase correct a high audio signal from the high audio driver directed to the outside of the canalphone housing with delivery of a low audio signal from the low audio driver directed to the outside of the canalphone housing.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: January 6, 2015
    Inventor: Jerry Harvey
  • Patent number: 8885868
    Abstract: A loudspeaker is disclosed, comprising a driven body and a suspension for providing a restoring force to the driven body, the suspension having a cup geometry wherein its attachment point on the fixed portion of the loudspeaker is displaced along the axis of motion relative to its attachment point on the driven body and comprising a first concentric region that is extendible to allow reciprocating axial movement of the driven body, a second concentric region which extends transversely from the first region toward one of the attachment points, and a circumferential member affixed to the suspension at a location between the first and second concentric regions, the circumferential member being relatively stiff compared to the material forming the first and second concentric regions.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: November 11, 2014
    Assignee: GP Acoustics (UK) Limited
    Inventors: Julia Davidson, Jack Anthony Oclee-Brown
  • Patent number: 8848960
    Abstract: A cone speaker that outputs audio by transmitting to a truncated cone, the movements of a voice coil driven when an audio current is transmitted through a voice coil placed inside a magnetic circuit formed in a space that surrounds a pole piece. Inside a space between the back surface of a center cap attached to a central portion of the cone and the apical surface of the pole piece that faces the center cap, a first filling material composed of a flexible porous body with a low porosity fills the periphery of the space and a second filling material composed of a flexible porous body with a higher porosity than the first filling material fills the central portion thereof.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: September 30, 2014
    Assignee: Genus Audio Corp.
    Inventor: Eiji Yamazaki
  • Patent number: 8813906
    Abstract: A damper speaker includes a fiber cloth woven by fibers, each of the fibers is formed by a single fiber strand or several fiber strands. The fiber strand includes a first fiber, which is one or a combination of cotton, polyester and aramid fiber. When the first fiber is the combination of cotton, polyester and aramid fiber, the weight ratio of any one to the fiber cloth is 0˜100%, and the weight ratio of the other two is adjusted. When the weight ratio of the first fiber to the fiber cloth is less than 100%, the fiber cloth includes a second fiber, which is one or a combination of rayon, silk, flax, acrylic, rubber and synthetic fiber. The speaker damper includes a layer of resin, which is absorbed by and combined with the fiber cloth. The fiber cloth is then cut into a predetermined shape through a molding means.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: August 26, 2014
    Inventor: Hiroshi Ohara
  • Patent number: 8794374
    Abstract: The present invention relates to a sound converter, and, more particularly, to a sound converter which can solve a problem in that a vibration space decreases in the sound converter requiring high outputs, as the overall height of a voice coil increases.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: August 5, 2014
    Assignee: EM-Tech. Co., Ltd.
    Inventors: Ji Hoon Kim, Kwan Ho Ko, Joong Hak Kwon
  • Patent number: 8798310
    Abstract: The present disclosure relates to a diaphragm that may be used with a mechanical-to-acoustical transducer. The diaphragm may include a layer of optically clear film, a damping layer and another layer of optically clear film. The damping layer may be an adhesive. The diaphragm may also comprise two optically clear films, optionally including a damping layer, wherein the films indicate a desired coefficient of linear thermal expansion in one or both of the machine and transverse directions.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: August 5, 2014
    Assignee: Emo Labs, Inc.
    Inventors: Jeffrey Davis Booth, Stefan Bokaemper, Robert H. White, Jr.
  • Publication number: 20140102825
    Abstract: A damper speaker includes a fiber cloth woven by fibers, each of the fibers is formed by a single fiber strand or several fiber strands. The fiber strand includes a first fiber, which is one or a combination of cotton, polyester and aramid fiber. When the first fiber is the combination of cotton, polyester and aramid fiber, the weight ratio of any one to the fiber cloth is 0˜100%, and the weight ratio of the other two is adjusted. When the weight ratio of the first fiber to the fiber cloth is less than 100%, the fiber cloth includes a second fiber, which is one or a combination of rayon, silk, flax, acrylic, rubber and synthetic fiber. The speaker damper includes a layer of resin, which is absorbed by and combined with the fiber cloth. The fiber cloth is then cut into a predetermined shape through a molding means.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Inventor: Hiroshi OHARA
  • Patent number: 8695753
    Abstract: A diaphragm for a loudspeaker including a plurality of masses, each mass being substantially the same radial distance from the center 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 center 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: Grant
    Filed: February 21, 2011
    Date of Patent: April 15, 2014
    Assignee: PSS Belgium NV
    Inventors: Karel Goossens, Onur Ilkorur, David Corynen, Charalampos Ferekidis, Karl-Heinz Fink
  • Patent number: 8567555
    Abstract: A canalphone system may include a high frequency sound bore carried within a canalphone. The system may also include a low frequency sound bore adjacent to the high frequency sound bore to form a single unit, the low frequency sound bore and the high frequency sound bore being sized so that the low frequency sound bore and the high frequency sound bore each deliver sound with similar time and phase. The system may further include a high acoustical driver carried within the canalphone where the high acoustical driver delivers sound through the high frequency sound bore. The system may additionally include a low acoustical driver carried within the canalphone where the low acoustical driver delivers sound through the low frequency sound bore.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 29, 2013
    Inventor: Jerry Harvey
  • Patent number: 8542861
    Abstract: A loudspeaker includes a diaphragm that vibrates back and forth to emit a sound, a magnetic circuit that is provided on a rear side of the diaphragm and has a magnetic gap on a diaphragm side, and a voice coil that is directly or indirectly joined to the diaphragm and disposed within the magnetic gap. A magnetic fluid is loaded within the magnetic gap. Also, a plurality of first edge pieces are provided at different positions in an outer circumferential portion of the diaphragm for vibratably supporting the diaphragm, each of the first edge pieces having a non-linear cross-sectional shape.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: September 24, 2013
    Assignee: Panasonic Corporation
    Inventors: Shuji Saiki, Hiroyuki Takewa
  • Patent number: 8498442
    Abstract: A loudspeaker includes a diaphragm that vibrates back and forth to emit a sound, a magnetic circuit that is provided on a rear side of the diaphragm and has a magnetic gap on a diaphragm side, and a voice coil that is directly or indirectly joined to the diaphragm and disposed within the magnetic gap. A magnetic fluid is loaded within the magnetic gap. Also, a plurality of first edge pieces are provided at different positions in an outer circumferential portion of the diaphragm for vibratably supporting the diaphragm, each of the first edge pieces having a non-linear cross-sectional shape.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: July 30, 2013
    Assignee: Panasonic Corporation
    Inventors: Shuji Saiki, Hiroyuki Takewa
  • Publication number: 20130146387
    Abstract: A canalphone system may include a high frequency sound bore carried within a canalphone. The system may also include a low frequency sound bore adjacent to the high frequency sound bore to form a single unit, the low frequency sound bore and the high frequency sound bore being sized so that the low frequency sound bore and the high frequency sound bore each deliver sound with similar time and phase. The system may further include a high acoustical driver carried within the canalphone where the high acoustical driver delivers sound through the high frequency sound bore. The system may additionally include a low acoustical driver carried within the canalphone where the low acoustical driver delivers sound through the low frequency sound bore.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Inventor: Jerry Harvey
  • Publication number: 20130133975
    Abstract: The present invention relates to a sound converter, and, more particularly, to a sound converter which can solve a problem in that a vibration space decreases in the sound converter requiring high outputs, as the overall height of a voice coil increases.
    Type: Application
    Filed: July 25, 2011
    Publication date: May 30, 2013
    Applicant: Em-Tech Co., Ltd.
    Inventors: Ji Hoon Kim, Kwan Ho Ko, Joong Hak Kwon
  • Patent number: 8261873
    Abstract: An apparatus and method for providing a downhole acoustic source is disclosed. The acoustic source includes a piston configured to oscillate in an axial direction of the acoustic source and produce an acoustic signal in a medium in contact with an exterior surface of the piston, and an elastomer disposed on an interior side of the piston, an acoustic impedance of the elastomer selected to match an acoustic impedance of the piston. A permanent magnet is configured to provide a permanent magnetic field oriented in the axial direction, and a coil disposed on an interior side of the piston produces an alternating magnetic field in the region of the permanent magnetic field. The elastomer may be, for example, a silicon rubber, a silicone jelly, and a silicone oil. A plurality of acoustic sources may be arranged to produce an acoustic dipole configuration or an acoustic quadrupole configuration.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: September 11, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Valeriy Richenstev, Vladimir Dubinsky, Douglas J. Patterson, Jonathan F. Hook, David H. Lilly
  • Publication number: 20120186903
    Abstract: The present disclosure relates to a diaphragm that may be used with a mechanical-to-acoustical transducer. The diaphragm may include a layer of optically clear film, a damping layer and another layer of optically clear film. The damping layer may be an adhesive. The diaphragm may also comprise two optically clear films, optionally including a damping layer, wherein the films indicate a desired coefficient of linear thermal expansion in one or both of the machine and transverse directions.
    Type: Application
    Filed: March 30, 2012
    Publication date: July 26, 2012
    Applicant: EMO LABS, INC.
    Inventors: Jeffrey Davis BOOTH, Stefan BOKAEMPER, Robert H. WHITE, JR.
  • Patent number: 8189851
    Abstract: The present disclosure relates to a diaphragm that may be used with a mechanical-to-acoustical transducer. The diaphragm may include a layer of optically clear film, a damping layer and another layer of optically clear film. The damping layer may be an adhesive. The diaphragm may also comprise two optically clear films, optionally including a damping layer, wherein the films indicate a desired coefficient of linear thermal expansion in one or both of the machine and transverse directions.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: May 29, 2012
    Assignee: EMO Labs, Inc.
    Inventors: Jeffrey Davis Booth, Stefan Bokaemper, Robert H. White, Jr.
  • Publication number: 20120106777
    Abstract: A damper for a speaker for vibratably supporting a voice coil to a static part includes a first damper and a second damper formed in an annular shape having an inner periphery part and an outer periphery part, respectively. The first and second dampers are formed in a shape expandable and contractable in a direction crossing a circumferential direction of the annular shape. The inner periphery part of the second damper is connected to the first damper between the inner periphery part and the outer periphery part of the first damper, and each outer periphery part of the first damper and the second damper is connected to each other such that annular space is formed between the first damper and the second damper.
    Type: Application
    Filed: June 29, 2009
    Publication date: May 3, 2012
    Applicants: TOHOKU PIONEER CORPORATION, PIONEER CORPORATION
    Inventors: Kenta Fujimoto, Hiroyuki Kobayashi, Shintaro Niidera, Hiroyuki Tomiyama
  • Patent number: 8135164
    Abstract: A speaker of the present invention includes the following: a diaphragm that includes an inner periphery coupled to a voice coil, and a corrugation provided at the intermediate position between the inner periphery and an outer periphery; a speaker edge for supporting the outer periphery of the diaphragm; and a damping member attached to an outer peripheral part of the diaphragm outside the vicinity of an outer periphery of the corrugation. The effective vibration area of an inner peripheral part of the diaphragm inside an inner periphery of the corrugation is substantially half or less of the total effective vibration area. The damping member is configured as a damping portion by extending an overlap portion of the speaker edge overlapping with the diaphragm to the vicinity of the outer periphery of the corrugation.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: March 13, 2012
    Assignee: Panasonic Corporation
    Inventors: Shoji Tanaka, Hiroko Tsutsumi, Takafumi Yuasa
  • Patent number: 8073185
    Abstract: An electronic device equipped with a speaker includes: a first cushion member interposed between the side surfaces of the speaker and the side guides of the speaker holding section formed on the cabinet; a second cushion member that is formed of a material softer than the first cushion member and is interposed between the undersurface of the speaker and the pedestal of the speaker holding section; and a third cushion member that is formed of a material softer than the first cushion member and is interposed between the rear surface of the speaker and the backrest of the speaker holding section.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: December 6, 2011
    Assignee: Fujitsu Limited
    Inventors: Hideki Watanabe, Ikki Tatsukami
  • Publication number: 20110293121
    Abstract: An electroacoustic transducer includes a frame defining a hollow space, and an elastic member mounted on the frame. The elastic member includes a circular plane lamina and a plurality of elastic arms extending outwardly from a circumference of the circular plane lamina. A diaphragm includes a vibrating film mounted with the circular plane lamina, and an edge damper integrally formed with an outer periphery of the vibrating film. A voice coil is attached below the vibrating film and electrically connected to the circular plane lamina. At least two through holes are formed between an outer periphery of the circular plane lamina and an inner side of the voice coil for balancing the air pressure of the air below the diaphragm.
    Type: Application
    Filed: January 28, 2011
    Publication date: December 1, 2011
    Inventor: Xu-Dong Yan