Electromagnetic (e.g., Dyynamic) Patents (Class 381/396)
Cooling feature (Class 381/397)
Having diaphragm support feature (Class 381/398)
Conductive diaphragm (e.g., ribbon) (Class 381/399)
Movable voice coil (Class 381/400)
Including adjustment mechanism (Class 381/411)
Magnetic circuit (Class 381/412)
Specified diaphragm shape or structure (Class 381/423)
Basket detail (Class 381/433)
  • Edge support for a speaker apparatus comprising multiple ridges
    Patent number: 8045745
    Abstract: According to an embodiment of the invention, there is provided a speaker apparatus includes: a voice coil bobbin; and a diaphragm that is vibrated by the voice coil bobbin, the diaphragm including an edge portion at an outer circumference of the diaphragm, the edge portion including at least two ridge portions protruding forward.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: October 25, 2011
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Minoru Horigome, Teruaki Kaiya, Yuichi Takahashi
  • Speaker device
    Patent number: 8045746
    Abstract: It is an object of the present invention to use a simplified structure to improve a strength of a neck portion of a conical diaphragm in the vicinity of a voice coil fixing section, thereby inhibiting an undesired dividing vibration in a speaker device. The speaker device of the present invention comprises: a generally conical diaphragm having an opening formed in a generally central position thereof; a voice coil bobbin fixed in the inner circumferential portion of the foregoing opening of the diaphragm; and a diaphragm reinforcing annular member disposed near a fixing section fixing together the diaphragm and the voice coil bobbin.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: October 25, 2011
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Koji Takayama, Kazuki Yuze, Hiroyuki Kobayashi, Shinichi Hayasaka
  • Transducer for Stapedius Monitoring
    Publication number: 20110255731
    Abstract: An electro-magnetic transducer assembly includes a first component. The first component includes at least one magnet, and optionally a first attachment mechanism for attaching the first component to a vibrating structure. A coil assembly includes a second attachment mechanism for removably attaching the coil assembly to the first component. The coil assembly further includes at least one coil that produces a signal representative of the vibration of the at least one magnet. An output port provides the signal.
    Type: Application
    Filed: April 14, 2011
    Publication date: October 20, 2011
    Applicant: MED-EL ELEKTROMEDIZINISCHE GERAETE GMBH
    Inventor: Geoffrey R. Ball
  • MULTIFUNCTIONAL MICRO SPEAKER
    Publication number: 20110255732
    Abstract: A multifunctional micro speaker including a frame; a diaphragm having an outer circumferential portion fixed to the frame; a voice coil fixed to a lower surface of the diaphragm; a first suspension having an outer circumferential portion fixed to the frame and having a predetermined elasticity; a yoke fixed to the first suspension; a first permanent magnet fixed to a bottom surface of the yoke; a plate fixed to an upper surface of the first permanent magnet; a second suspension including a supporter and a protrusion, and having a predetermined elasticity, wherein the supporter is spaced apart from the first suspension in a downwards direction and has a first end portion fixed to the frame, and the protrusion protrudes from the supporter towards the first suspension; and a second magnet accommodated in the protrusion and fixed to a lower surface of the second suspension.
    Type: Application
    Filed: November 4, 2009
    Publication date: October 20, 2011
    Applicant: BSE CO., LTD.
    Inventors: Cheol-Young Kwon, Sang-Ho Lee, Hong-Kyu Jang
  • Electromagnetically-countered speaker systems and methods
    Patent number: 8041048
    Abstract: The present invention relates to electromagnetically-countered speaker systems for generating acoustic sounds according to dynamic signals supplied thereto while minimizing irradiation of harmful electromagnetic waves therefrom. More particularly, the present invention relates to various speaker systems which do not include speaker magnets but include driver members for generating the sounds while emitting such harmful waves and counter members for generating magnetic forces for providing such sound while emitting counter electromagnetic waves capable of canceling at least a substantial portion of the harmful waves based on their configurational and phase characteristics. The present invention also relates to various speaker systems which do not include speaker magnets but include various electric and/or magnetic shields in addition to such drive and counter members.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: October 18, 2011
    Inventor: Youngtack Shim
  • Speaker
    Patent number: 8036414
    Abstract: This invention provides an audio speaker with improved physical safety isolation between a voice coil and other electrically live elements.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 11, 2011
    Inventors: John B. French, Douglas Walter Hansen
  • Loudspeaker
    Patent number: 8023686
    Abstract: A loudspeaker includes a basket defining a center hole therethrough, a conduction wire board fixed to the bottom surface of the basket, a magnet placed on the basket, a diaphragm arranged on the basket and above the magnet, and a voice coil. The conduction wire board defines a core hole corresponding to the center hole, and two welding foils on the bottom surface. The magnet defines a through hole corresponding to the center hole. The voice coil is wrapped around the magnet and fixed to the bottom of the diaphragm. The voice coil has leading wires, which bend inward at the top and downward pass through the through hole of the magnet, the center hole of the basket and the core hole of the conduction wire board, and then extend toward two sides of the rivet for being welded on the corresponding welding foils.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: September 20, 2011
    Assignee: Cheng Uei Precision Industry Co., Ltd.
    Inventors: Kun-li Huang, Hung-chi Wang, Jiin-tarng Huang
  • Ultra low frequency transducer and loud speaker comprising same
    Patent number: 8023688
    Abstract: An ultra low frequency transducer or subwoofer for automotive speaker systems with a polygonal, concave diaphragm. The periphery preferably is sized to be substantially coextensive with the front of the speaker housing or cabinet. In this way, air displacement in the subwoofer is maximized for a given size of enclosure, and thus so is the loudness of the speaker. The transducer typically includes a frame or basket with a polygonal front for supporting the periphery of the diaphragm. The preferred diaphragm includes a convex surround with pleated corners. For increased durability, trusses are formed in the diaphragm.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: September 20, 2011
    Assignee: Stillwater Designs and Audio, Inc.
    Inventors: Steven M. Irby, William O. Doerring
  • Thin multi-function vibration actuator
    Patent number: 8022799
    Abstract: A magnetic circuit unit includes a pole piece, a magnet, and a yoke and a suspension made of a magnetic material. A magnetic gap is formed between an inner circumferential side surface of the suspension and a circumference of the pole piece. Accordingly, it is possible to allow the magnet in the magnetic circuit unit to be thinly constructed. In addition, it is possible to implement a multi-function vibration actuator having a thin structure and capable of obtaining a sufficiently sensible vibration.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: September 20, 2011
    Assignee: Namiki Seimitsu Houseki Kabushiki Kaisha
    Inventors: Minoru Ueda, Shoichi Kaneda, Kenji Ueno
  • Medicament delivery device configured to produce an audible output
    Patent number: 8021344
    Abstract: Medicament delivery devices are described herein. In some embodiments, an apparatus includes a medicament delivery device and an electronic circuit system. The medicament delivery device includes a housing, a medicament container, and a medicament delivery member. The electronic circuit system is coupled to the housing and includes an audible output device and a cover. The housing of the medicament delivery device and the cover of the electronic circuit system collectively define an acoustic enclosure. The audible output device is configured to be disposed within the acoustic enclosure.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: September 20, 2011
    Assignee: Intelliject, Inc.
    Inventors: Eric S. Edwards, Evan T. Edwards, Mark J. Licata, Paul F. Meyers, David A. Weinzierl
  • Loudspeaker
    Patent number: 8019112
    Abstract: A loudspeaker includes a movable diaphragm, a resilient centering device for centering and guiding the movement of the diaphragm, and a magnet system for controlling the movement of the diaphragm, where the diaphragm is positioned between the magnet system and the resilient centering device.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: September 13, 2011
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Gilles Milot, Francois Malbos
  • Speaker system for head protective gear
    Patent number: 8014556
    Abstract: A headgear system enhanced for generating sound has at least one speaker apparatus connected to or integrated into the structure of the headgear system, the speaker apparatus including a magnet suspended in a magnetic fluid, and at least one resonator connected to the at least one speaker apparatus. The system is characterized in that excitation of the magnet produces vibration translated to the resonator to generate the sound.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: September 6, 2011
    Assignee: Central Coast Patent Agency, Inc.
    Inventor: Josh Goldberg
  • Self-cooling electromagnetic transducer
    Patent number: 8014555
    Abstract: An electromagnetic transducer includes a housing, a diaphragm, a conductive coil, and a magnetic assembly having a plurality of air passages. The coil communicates with the diaphragm such that a flexible portion of the diaphragm is movable in response to movement of the coil. The coil includes axially spaced first and second coil portions. The magnetic assembly is disposed in the housing and is axially spaced from the diaphragm by an interior region. The coil portions are at least partially disposed in an annular gap formed in the magnetic assembly. Each air passage communicates with the interior region and with a respective aperture of the housing. The air passages provide respective air flow paths between the diaphragm and the ambient environment. Air flow through the passages is affected by movement of the flexible diaphragm portion for transferring heat from the transducer to the ambient environment.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: September 6, 2011
    Assignee: Harman International Industries, Incorporated
    Inventors: Ralph E. Hyde, Douglas J. Button
  • Loudspeaker
    Patent number: 8009858
    Abstract: 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.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: August 30, 2011
    Inventor: Jason Myles Cobb
  • Speaker
    Patent number: 8009855
    Abstract: A degree of freedom in designing a circuit board to which a speaker is attached is enhanced. The speaker including: a frame with a yoke of a magnetic circuit portion embedded inside a central through hole; a diaphragm having a voice coil inserted in a magnetic circuit of the magnetic circuit portion; a cap having a sound dispersing hole that covers over the diaphragm and the frame; and a terminal electrically connected to the voice coil on a side opposite to the cap of the frame, wherein an insulating body is attached to an exposing portion of the yoke on the side opposite to the cap, a back pressure adjusting hole is provided in the exposing portion with respect to the diaphragm, and the terminals are provided to be retractable in the back pressure adjusting hole.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: August 30, 2011
    Assignee: Tohoku Pioneer Corporation
    Inventor: Satoshi Chiba
  • Inertial vibration exciter
    Publication number: 20110206230
    Abstract: An inertial vibration exciter having a magnet assembly defining an annular gap, a coil assembly disposed in the annular gap, suspension means mounting the coil assembly for reciprocating movement in the gap, means coupling the coil assembly to a member to be vibrated, and a hermetically sealed housing in which the magnet assembly, the coil assembly, the suspension means and the coupling means are disposed. The housing may comprise a heat sink thermally coupled to the magnet assembly and the heat sink may be resiliently coupled to the housing. The coupling means may comprise a plate-like member to which the coil is rigidly attached and of a size substantially greater than the diameter of the coil. The plate-like member may be resiliently coupled to the housing.
    Type: Application
    Filed: July 17, 2008
    Publication date: August 25, 2011
    Applicant: NEW TRANSDUCERS LIMITED
    Inventor: Julian Fordham
  • Magnetic Diaphragm and Manufacturing Method thereof
    Publication number: 20110194723
    Abstract: An exemplary magnetic diaphragm is applied to an electro-acoustic transducer. The magnetic diaphragm has a base formed with a magnetic layer thereon by a film deposition method. The base with the magnetic layer thus has magnetism to interference with a magnetic circuit of the electro-acoustic transducer. A manufacture method of the magnetic diaphragm is also disclosed.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 11, 2011
    Inventors: Ching-Lan Lin, Hong-Ching Her
  • Speaker assembly with mounting plate
    Patent number: 7995785
    Abstract: A speaker assembly may include a speaker basket, a mounting plate, and a shell pot. The speaker basket may be a plastic speaker basket. The mounting plate may be insert molded into the speaker basket. The shell pot may be seated into an opening in the mounting plate and coupled to the mounting plate. Further, the shell pot may be configured to house additional speaker components, such as a motor assembly.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: August 9, 2011
    Assignee: Harman International Industries, Incorporated
    Inventor: Eric Royse
  • Audio speaker having a removable voice coil
    Patent number: 7986804
    Abstract: An audio speaker having a removable voice coil, which may be a part of a voice coil assembly. The voice coil may be user-removable to facilitate replacement of a damaged voice coil or reconfiguration of a speaker system. Properly positioning the voice coil assembly may provide a solder-free electrical connection between the voice coil and leads that provide current to the voice coil. In some embodiments, the voice coil is user-removably attached to an inner circumferential surface of a diaphragm. In other embodiments, the voice coil is connected to the diaphragm, and the voice coil assembly and the diaphragm are both user-removably attached to a frame.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: July 26, 2011
    Assignee: Boston Acoustics, Inc.
    Inventors: Aaron Linn, Leif Blackmon
  • Driver for a speaker
    Patent number: 7978872
    Abstract: A driver for a speaker including: an upper housing, a lower housing and a vibration device, wherein said upper housing combines with said lower housing to form a chamber therein. The vibration device is received in the chamber. The vibration device is basically constituted with an acoustic phase equalizer, a diaphragm, a flux guiding plate, a magnet and a yoke. By the design of the flux guiding plate, the magnet and the yoke in present invention, the disadvantage of highly concentrated heat in prior art can be improved and extends the operation period.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: July 12, 2011
    Assignee: DK Signal Ltd.
    Inventor: Vu-Quang Dam
  • Method for producing a microphone module for a hearing aid device
    Patent number: 7971337
    Abstract: The production of a hearing aid device can be simplified by the use of a microphone module with a plurality of microphones. To attach and electrically contact the microphones, the invention provides a microphone carrier with three-dimensionally directed conductor traces in MID technology. In a complicated microphone arrangement with a plurality of microphones, a single microphone module can thereby be used on which all microphones of the hearing aid device are attached and electrically connected.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: July 5, 2011
    Assignee: Siemens Audiologische Technik GmbH
    Inventors: Holger Kral, Joseph Sauer, Markus Trautner
  • Insert molded surround with mechanical support
    Patent number: 7974433
    Abstract: A suspension member for a diaphragm, the suspension member comprising an inner portion being adapted to be attached to a substantially stiff piston part, a outer portion arranged on or integrated with a substantially stiff support member so as to mechanically stabilize the suspension member, and a flexible member connecting the inner and outer portions. The present invention further relates to an electro-acoustic transducer, preferably a miniature electro-acoustic transducer, applying such suspension member.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: July 5, 2011
    Assignee: Gettop Europe R&D ApS
    Inventors: Morten Kjeldsen Andersen, Leif Johannsen
  • Speaker unit
    Patent number: 7965856
    Abstract: A speaker unit of the present invention includes a frame made of a synthetic resin, inside which a voice coil is disposed in a space between a pole piece and a yoke. A diaphragm is coupled to the voice coil. A pair of lead wires extending from the voice coil are passed between the yoke and the diaphragm, and led out of the frame. The frame has a receiving surface for receiving collisions of the lead wires due to vibrations of the diaphragm, which is formed outer than an end face of the yoke opposed to the diaphragm, and closer to the diaphragm than the end face.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: June 21, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroshi Sato, Chisato Tsujii
  • Accoustic device
    Publication number: 20110142277
    Abstract: An acoustic device intended to operate pistonically and in bending comprising a panel-form acoustic radiator, a magnetic drive system including a voice coil on a tubular bobbin, the bobbin being directly coupled to the radiator to drive the radiator directly; and a coupling device connected to the bobbin, and to the radiator at a position at or near to the first nodal line of bending resonance of the radiator. A method of improving the on-axis response of a loudspeaker having a panel-form radiator and intended to operate both pistonically and in bending, comprising driving the radiator by a directly connected tubular bobbin, and substantially suppressing the lowest natural frequency of the radiator by providing a coupler connected from the bobbin to the radiator at or near to its first nodal line.
    Type: Application
    Filed: June 16, 2009
    Publication date: June 16, 2011
    Applicant: NEW TRANSDUCERS LIMITED
    Inventor: Graham Bank
  • Loudspeaker
    Patent number: 7957551
    Abstract: A loudspeaker includes the following components: a frame (5) that has a magnetic circuit (4) including a magnetic gap (4a) therein; and a diaphragm (6) that is bonded to a voice coil (7) fitted into the magnetic gap (4a) in the center thereof, and to the periphery of the frame (5) along the outer periphery thereof. The magnetic circuit (4) includes a yoke (1), a magnet (2), and a top plate (3). Tongue-shaped flanges (1a) are disposed at a substantially equidistant spacing in three positions to protrude from the top end face of the yoke (1). The total area of these tongue-shaped flanges (1a) in the three positions does not exceed a half of the total area corresponding to the flange part without flanges (1a). The frame (5) also includes engaging parts (5a) each for receiving one of the tongue-shaped flanges (1a) therein.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: June 7, 2011
    Assignee: Panasonic Corporation
    Inventors: Michitaka Oda, Shinya Tabata, Takenori Yamakawa, Yasuhiro Nakanishi
  • Boundary layer regulator for extended range acoustical transducers
    Patent number: 7949146
    Abstract: An improved method and device for controlling cone breakup (divisional modes) in extended range, cone diaphragm type electromechanical acoustical transducers for reproducing an acoustical signal from a corresponding electrical signal is provided. The transducer assembly includes a low mass cone shaped diaphragm, a voice coil former of 30 mm or less in diameter, and a shaped device no wider than the diameter of the voice coil former and extending into the inner volume of the cone but no taller than the height of the outside edge of the cone. This shaped device defines the shape and volume of a small mass of air within the boundary layer of air where molecular adhesion of air molecules to the cone diaphragm surface becomes a significant variable in the performance of the extended range transducer.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 24, 2011
    Inventor: Mark D. McKenzie
  • Speaker apparatus
    Patent number: 7936896
    Abstract: According to an aspect of the invention, there is provided a speaker apparatus including: a magnetic circuit; a vibrating plate vibrated by the magnetic circuit; a speaker frame holding the magnetic circuit and the vibrating plate, and a connecting portion connecting a portion of holding the vibrating plate and a portion of holding the magnetic circuit, an inclined face of the connecting portion being inclined relative to a direction of tangential line of circumference of the speaker frame, the connecting portion configured to flow air due to a vibration of the vibrating plate along the inclined face thereof.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: May 3, 2011
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Minoru Horigome, Teruaki Kaiya, Yuichi Takahashi
  • Ultra low frequency transducer and loud speaker comprising same
    Patent number: 7916890
    Abstract: An ultra low frequency transducer or subwoofer for automotive speaker systems with a rectangular or square or otherwise polygonal diaphragm. The basket of the transducer has a correspondingly polygonal front, which preferably is sized to be substantially coextensive with the front of the speaker housing or cabinet. In this way, air displacement in the subwoofer is maximized for a given size of enclosure, and thus so is the loudness of the speaker. The preferred diaphragm is concave, and the transducer preferably includes a convex surround with pleated corners. For increased durability, trusses are formed in the diaphragm.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: March 29, 2011
    Assignee: Stillwater Designs and Audio, Inc.
    Inventors: Steven M. Irby, William O. Doering
  • Speaker apparatus and terminal member
    Patent number: 7912242
    Abstract: A frame has a slide hole and a receiving hole made close to an end of the slide hole. A terminal member has a protrusion protruding from a face making contact with the speaker frame, and a claw projecting in a direction approximately perpendicular to a protruding direction of the protrusion. An approximate-projection-shaped engaging portion is formed on the claw to engage with the receiving hole made close to the end of the slide hole. For example, when the terminal member is mounted on the frame, the protrusion is inserted into the slide hole and then slid along the slide hole, thereupon the engaging portion formed on the claw engages with the receiving hole, whereby the terminal member is fixedly attached to the speaker frame.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: March 22, 2011
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventor: Toshihiro Hikichi
  • Flat speaker
    Patent number: 7912239
    Abstract: A flat speaker comprising a vibrating plate including a spiral voice coil, a lead portion extracted from the vice coil and reinforced by the reinforcing member, and an electric supply line; an edge portion supporting the vibrating plate; and a yoke, supporting the edge portion, on which the permanent magnet arranged to face the voice coil. The flat speaker 1 of the invention includes a vibrating membrane 2 of an insulating base film 3 with a spiral or meandering voice coil 4 formed on one or both faces thereof, a permanent magnet 5 arranged on corresponding location facing the voice coil 4; and a yoke 6 on which the permanent magnet 5 is arranged. The vibrating membrane 2 is avoided from hitting the permanent magnet by providing a perforated sheet on the back face of the yoke to control acoustic resistance.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: March 22, 2011
    Assignees: The Furukawa Electric Co., Ltd., Fujitsu Ten Limited
    Inventors: Takeshi Nishimura, Masato Sorimachi, Yuuzo Nakajima, Hiroshi Ikeda, Kiyoshi Ootani, Akira Nishikawa, Yuichi Nakajima, Kiyosei Shibata
  • Exciter for directly vibrating board and speaker apparatus used the same
    Patent number: 7907742
    Abstract: An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: March 15, 2011
    Assignee: Fujitsu Ten Limited
    Inventors: Yuichi Nakajima, Kiyoshi Ootani, Akira Nishikawa, Noboru Hidaka
  • Method of manufacturing faceplate for in-the-ear hearing aid
    Patent number: 7905006
    Abstract: Provided is a faceplate for an In-The-Ear (ITE) hearing aid and a method of manufacturing a faceplate for an In-The-Ear (ITE) hearing aid in which the faceplate can be manufactured in a compact size, using a foldable flexible printed circuit board (PCB), while maintaining the quality, enabling mass-production, and reducing the manufacturing cost.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: March 15, 2011
    Inventor: You Jung Kwon
  • PIEZOELECTRIC MICRO SPEAKER HAVING PISTON DIAPHRAGM AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20110051985
    Abstract: Provided are a piezoelectric micro speaker having a piston diaphragm and a method of manufacturing the piezoelectric micro speaker. The piezoelectric micro speaker includes: a substrate having a cavity formed therein; a vibrating membrane that is disposed on the substrate and covers at least a center part of the cavity; a piezoelectric actuator disposed on the vibrating membrane so as to vibrate the vibrating membrane; and a piston diaphragm that is disposed in the cavity and performs piston motion by vibration of the vibrating membrane. When the vibrating membrane vibrates by the piezoelectric actuator, the piston diaphragm, which is connected to the vibrating membrane through a piston bar, performs a piston motion in the cavity.
    Type: Application
    Filed: January 29, 2010
    Publication date: March 3, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jun-sik HWANG, Dong-kyun KIM, Seok-whan CHUNG, Byung-gil JEONG
  • Transducers with improved viscous damping
    Patent number: 7899203
    Abstract: A miniature receiver or transducer with improved viscous damping. The receiver may be a moving armature receiver using shearing forces for damping the deflection of the diaphragm. In this receiver, the damping element, which may be a liquid, extend in a direction of the deflection of the armature or diaphragm. Another embodiment relates to a transducer where the damping element engages the diaphragm.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: March 1, 2011
    Assignee: Sonion Nederland B.V.
    Inventors: Aart Zeger Van Halteren, Paul Christiaan Van Hal, Onno Geschiere
  • Method for manufacturing an electroacoustical transducer comprising a membrane configuration
    Patent number: 7895727
    Abstract: In an electroacoustic transducer (21) with a stationary transducer part (23) and with a membrane configuration (17) comprising a membrane (15) and a handling ring (1) for the membrane (15) connected with the membrane (15), the membrane configuration (17) is connected with the stationary transducer part (23) via the handling ring (1), and the handling ring (1) and membrane (15) are connected together via an interlocking connection.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: March 1, 2011
    Assignee: NXP B.V.
    Inventor: Ewald Frasl
  • MAGNET SYSTEM AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20110033077
    Abstract: A method of manufacturing a magnet system (101, 201) for an electro-acoustic transducer (100, 200) comprising a magnet element (105, 205) and at least one pole plate (106, 107, 206, 207), is described, wherein the method comprises providing the magnet element (105, 205) having a first coating layer comprising a first corrosion resistant material, providing the at least one pole plate (106, 107, 206, 207) having a second coating layer comprising a second corrosion resistant material, and connecting said magnet element (105, 205) and said at least one pole plate (106, 107, 206, 207) by fusing the first coating layer and the second coating layer.
    Type: Application
    Filed: April 3, 2009
    Publication date: February 10, 2011
    Applicant: NXP B.V.
    Inventors: Maria Papakyriacou, Heinz Renner
  • Method for producing a membrane
    Patent number: 7882612
    Abstract: A method for producing a membrane for a device, e.g. a microphone, includes providing a substrate is provided on which a counter electrode is disposed. A sacrificial layer is provided on a surface of the counter electrode facing away from the substrate. The surface of the sacrificial layer facing away from the counter electrode is structured to form a plurality of recesses in the surface to define one or several antistick elements and one or several corrugation grooves at the same time. Subsequently, a membrane material is deposited on the structured surface of the sacrificial layer. Then, the sacrificial layer is removed to form the membrane, which has one or several corrugation grooves and one or several antistick elements.
    Type: Grant
    Filed: February 21, 2009
    Date of Patent: February 8, 2011
    Assignee: Infineon Technologies AG
    Inventors: Alfons Dehé, Stefan Barzen, Marc Fueldner
  • Method of forming vertical coupling structure for non-adjacent resonators
    Patent number: 7877855
    Abstract: A method for forming a vertical coupling structure for non-adjacent resonators is provided to have a first and a second resonators, a dielectric material layer, a first and a second high-frequency transmission lines and at least one via pole. The first and the second resonators respectively have a first and a second opposite metal surfaces. The dielectric material layer is disposed between the opposite second metal surfaces of the first and the second resonators. The first and the second transmission lines are respectively arranged at sides of the first metal surfaces of the first resonator and the second resonator. The first high-frequency transmission line is vertically connected to the second high-frequency transmission line by the via pole.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: February 1, 2011
    Assignees: Industrial Technology Research Institute, National Taiwan University
    Inventors: Chia-Cheng Chuang, Ruey-Beei Wu, Tze-Min Shen
  • Speaker device
    Patent number: 7881490
    Abstract: A speaker device includes a magnetic circuit, a vibration system, a frame and a terminal. The frame is formed into a frame shape, and an inner wall thereof holds the magnetic circuit. Particularly, the frame has an opening for ventilation, which makes a rear surface positioned on a side opposite to a sound output direction and a side surface curved to a direction of the sound output direction from a peripheral end of the rear surface communicate with each other, and the terminal covers the opening on the rear surface of the frame. Therefore, the opening is provided on the side surface of the frame, and ventilation performance of the speaker device is ensured. In addition, by such amount that no opening is provided on the rear surface of the frame, a setting space of the terminal can be enlarged on the rear surface of the frame.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: February 1, 2011
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Satoshi Chiba, Shunichi Hiramuki
  • Method of manufacturing a speaker
    Patent number: 7877856
    Abstract: 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: Grant
    Filed: May 12, 2009
    Date of Patent: February 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Takanori Fukuyama, Tomoyasu Takase, Koji Sano, Hiroshi Yano, Masanori Nakano, Shigeru Tomoeda, Kazuki Honda, Kazuya Yamasaki, Kazutaka Kubo, Takeshi Shimokawatoko, Mitsutaka Enomoto, Masahide Sumiyama
  • Ultrasonic transducer and ultrasonic speaker using the same
    Patent number: 7881489
    Abstract: An ultrasonic transducer includes: a fixed electrode having corrugations on the surface; a vibrating film having an electrode layer and disposed on the surface of the fixed electrode; and a holding member which holds the fixed electrode and the vibrating film. The ultrasonic transducer is driven by applying an AC signal between the electrode layer of the vibrating film and the fixed electrode, and generates a sound pressure of at least 120 dB within a frequency range from 20 kHz to 120 kHz.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: February 1, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Kinya Matsuzawa, Hirokazu Sekino, Yoshiki Fukui, Shinichi Miyazaki
  • Electro-dynamic planar loudspeaker
    Patent number: 7873178
    Abstract: A planar loudspeaker includes a shell pot, a magnet, a diaphragm, and a face plate. The magnet may be positioned in a cavity in the shell pot. The diaphragm may be coupled with the shell pot to cover an entrance to the cavity. The shell pot may include a conductive path having an inner contact proximate the central axis of the diaphragm, and an outer contact proximate to a perimeter of the diaphragm. The face plate may be coupled with the shell pot so that the diaphragm is positioned between the magnet and the faceplate. The face plate may include an inner terminal and an outer terminal that are aligned to be in direct contact with the respective inner contact and the outer contact of the diaphragm and form an electrical connection there between when the face plate is coupled with the shell pot. The inner and outer terminals may be coupled with a source of electrical signals, such as an audio amplifier.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: January 18, 2011
    Assignee: Harman International Industries, Incorporation
    Inventors: John F. Steere, Hans-Juergen Regl, Steven W. Hutt
  • Speaker for mobile communication terminal
    Patent number: 7869617
    Abstract: A speaker for a mobile communication terminal is provided. The speaker with an upper case, a frame, a vibration plate, a voice coil, a yoke, a magnet, a top plate and a printed circuit board (PCB) includes a housing for accommodating the vibration plate, the voice coil, the yoke, the magnet and the top plate, the housing being formed by coupling the upper case and the frame, a sound emission hole formed in one side surface of the housing, a sound pressure adjustment hole formed by penetrating the upper case, and a resonance space formed in an outer circumference of the upper case. In the speaker, it is possible to elevate degree of space utilization in the mobile communication terminal, to easily manufacture a mobile communication terminal which parallels the trend toward miniaturization, slimness and lightness, to improve the characteristics of low frequency sound, and thus to improve sound quality.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: January 11, 2011
    Assignees: Samsung Electronics Co., Ltd., Bujeon Co., Ltd.
    Inventors: Bo-Eun Jang, Sung-Sik Kim
  • Speaker
    Patent number: 7864976
    Abstract: A speaker may include a voice coil bobbin and a center pole. The voice coil bobbin may include a nonmetallic pipe body as a base of the voice coil bobbin, a first nonmagnetic and electric conductor film which is formed on an inner peripheral face of the pipe body, and a second electric conductor film which is formed on an outer peripheral face of the pipe body such that the first electric conductor film is covered by the second electric conductor film through the pipe body. An electrostatic capacity that is formed between the voice coil bobbin and the center pole is detected and outputted as an electric signal.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: January 4, 2011
    Assignee: Nidec Pigeon Corporation
    Inventors: Hideo Kitazawa, Akinori Ushikoshi, Takamasa Kaneko, Kenji Yokoyama
  • Voice coil assembly and loudspeaker using the same
    Patent number: 7864977
    Abstract: According to the invention, a whole-surface driven, flat thin loudspeaker that brings about smooth frequency characteristics with split vibration hardly caused is realized, and a voice coil assembly that has high reproduction efficiency and fewer operation failures, and brings about favorable work efficiency in manufacturing and further reduced manufacturing cost, and a loudspeaker using the same are manufactured.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: January 4, 2011
    Assignee: Onkyo Corporation
    Inventors: Koichi Sadaie, Yoshihide Toyoshima, Hiroyasu Kumo
  • DIGITAL SPEAKER APPARATUS
    Publication number: 20100316242
    Abstract: An actuation system for generating a physical effect, the system comprising at least one array of translating elements each constrained to travel alternately back and forth along a respective axis, toward first and second extreme positions respectively, in response to activation of first and second forces respectively; and a controller operative to use the first and second forces to selectably latch at least one subset of said translating elements into the first and second extreme positions respectively.
    Type: Application
    Filed: November 20, 2008
    Publication date: December 16, 2010
    Applicant: AUDIO PIXELS LTD.
    Inventors: Yuval Cohen, Daniel Lewin, Shay Kaplan, Alex Sromin, Meir Ben Simon
  • DIAPHRAGM AND MICRO-ELECTROACOUSTIC DEVICE INCORPORATING THE SAME
    Publication number: 20100310110
    Abstract: A diaphragm includes a central portion in a center of the diaphragm and an external portion surrounding the central portion. The central portion includes a central section in a center of the central portion, a peripheral section at an outer periphery of the central portion and a connecting section between the central section and the peripheral section. The peripheral section forms at least one protrusion.
    Type: Application
    Filed: September 16, 2009
    Publication date: December 9, 2010
    Applicant: FOXCONN TECHNOLOGY CO., LTD.
    Inventor: HWANG-MIAW CHEN
  • Magnetic Shield
    Publication number: 20100304796
    Abstract: A mobile apparatus includes an internal hands-free loudspeaker and a magnetic shielding plate that protects external objects sensitive to magnetic fields from the high-level magnetic field generated by the loudspeaker.
    Type: Application
    Filed: November 23, 2006
    Publication date: December 2, 2010
    Applicant: NOKIA CORPORATION
    Inventors: Josef Stohr, Andreas Fromel, Christian Mayer
  • Loudspeaker
    Patent number: 7844071
    Abstract: Voice coil body of a loudspeaker is provided at the outer circumferential wall surface with a supporting section. Diameter of the inner circumference of suspension holder is greater than outer diameter of the voice coil body while diameter of the inner circumference of diaphragm is greater than diameter of the inner circumference of suspension holder for facilitating a gluing of the inner circumferential end of suspension holder and the inner circumferential end of diaphragm on the supporting section and to the voice coil body. By so doing, harmonic distortion of a loudspeaker can be further reduced.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: November 30, 2010
    Assignee: Panasonic Corporation
    Inventors: Osamu Funahashi, Seiichi Yoshida, Kimihiro Ando, Kazuyoshi Umemura
  • Self-cooled electro-magnetic audio transducer
    Patent number: 7831059
    Abstract: An electro-magnetic audio transducer that is self-cooling by inhaling and exhausting an area that is separated from the reminder of the transducer by an instantaneous decrease or increase, respectively, of the pressure within that area by the movement of a coil when electrically excited. The coil being wound on a bobbin that defines an interior cavity that changes in size as the coil is excited causing that size to increase or decrease thus inhaling or exhausting, respectfully, air into or out of the cavity by the pressure change. That movement of air resulting in convective cooling of the coil and transducer. The bobbin encircling a magnetic pole piece with a cooling cap on top thereof with slots therethrough through which air is drawn in opposite directions as the size of the cavity within the bobbin changes size as the coil is electrically excited.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: November 9, 2010
    Inventor: Joseph Y. Sahyoun