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| Number | Title | Issue Date |
| 7925041 | Method of making a linkage assembly for a transducer and the like A linkage assembly is used for mechanically coupling an armature and a diaphragm of a balanced receiver, the linkage assembly formed from a first linkage member displaced from a strip of stock material relative to the plane of the stock material and a second linkage... | 04/12/2011 |
| 7577269 | Acoustic transducer A transducer utilizes a sound-producing member positioned in the area of magnetic flux concentration between magnetic poles of opposite polarity. The sound-producing member is variably vibratable in a magnetic structure between the poles to generate acoustic waves, ... | 08/18/2009 |
| 7443997 | Armature for a receiver An armature for a receiver comprising a first and a second leg portion each having a thickness and a width and connected to each other, and a connection portion in communication with the first and second leg portions. The connection portion has a width greater than ... | 10/28/2008 |
| 7336198 | Magnetostatic communication A system for providing communication of information by modulating a magnetostatic field with a magnetostatic transmitter that modulates said magnetostatic field to contain the information and detecting the information in the modulated field at a distance with a magn... | 02/26/2008 |
| 7336797 | Apparatus and method for generating acoustic energy in a receiver assembly A receiver assembly includes a housing having a fixed housing portion and a shiftable housing portion cooperating to define a hollow cavity. A flexible membrane secured between the fixed housing portion and the shiftable housing portion and adapted to allow relative... | 02/26/2008 |
| 7321664 | Receiver having an improved bobbin A receiver is disclosed for use in listening devices, such as hearing aids. The receiver comprises an electromagnetic drive assembly that includes a bobbin having a coil of conductive wire formed thereon. The bobbin is capable of compensating for the deflections on ... | 01/22/2008 |
| 7319766 | In-wall loudspeaker An improved in-wall speaker assembly providing better performance and less intrusion than prior art speakers. The speaker assembly is oriented such that the driver fires vertically, parallel to the wall studs, rather than horizontally and perpendicular to the wall s... | 01/15/2008 |
| 7302748 | Linkage assembly for an acoustic transducer A linkage assembly (140) is used for mechanically coupling an armature (124) and a diaphragm (118) of a balanced receiver (100), the linkage assembly (140) formed from a first linkage member (822) displaced from a strip of s... | 12/04/2007 |
| 7292695 | Bone conductive speaker A bone conductive speaker is downsized without causing any loss in efficiency, simple in construction low in cost, and comprises yoke (2), magnet (3) disposed in a central area of the yoke, and voice coil (4) wound on the magnet. The yoke has it... | 11/06/2007 |
| 7285890 | Magnet retention on rotors Permanent magnets are mounted on a rotor of an electrical motor by an apparatus that keeps an adhesive bonding layer between the magnet and rotor in compression over wide variations in temperature and speed of rotation. The mechanical stresses on the magnets are con... | 10/23/2007 |
| 7280016 | Design of membrane actuator based on ferromagnetic shape memory alloy composite for synthetic jet actuator A membrane actuator includes a magnetically actuatable membrane and a magnetic trigger. The membrane includes a shape memory alloy (SMA), and the magnetic trigger is configured to induce a martensitic transformation in the SMA, to produce a larger force than would b... | 10/09/2007 |
| 7265315 | Method of joining terminals by soldering A method of joining terminals by soldering is provided which allows control of increasing gas supply even in soldering performed in a gas atmosphere within a gas chamber. Utilizing a springback phenomenon occurring at a flat portion of a terminal, a solder joint of ... | 09/04/2007 |
| 7263200 | Loud speaker A loud speaker includes a circuit board and a base. The circuit board includes a plurality of contacts on a side thereof. The base is formed of plastic material by injection molding. The base includes an insertion groove in an end thereof. The circuit board is embed... | 08/28/2007 |
| 7236609 | Electro-acoustic transducer with resistance to shock-waves A transducer comprising a pair of spaced magnets at least partially forming a tunnel having a central axis. A coil having a first and a second side wall and an upper and a lower wall at least partially forms the tunnel. A reed having a central portion extends throug... | 06/26/2007 |
| 7224814 | Two-way communication device A two-way communication device includes a magnetoelastic rod located between an inertial back mass and a front panel of low mass. A coil is located in the vicinity of the rod, and the rod and coil together define an audio-electric transducer. An electronic processin... | 05/29/2007 |
| 7203334 | Apparatus for creating acoustic energy in a balanced receiver assembly and manufacturing method thereof A paddle (142) of a diaphragm (118) of a receiver (100) is manufactured using one or more layers of a material selected for their inertial mass and rigidity. The paddle may have a layered structure with stiff outer layers such as aluminum and a ... | 04/10/2007 |
| 7190803 | Acoustic transducer having reduced thickness A transducer for a hearing aid includes a housing, a relatively thin membrane having a free end suspended in the housing for vibration in response to a motor. The motor has a coil and a magnet assembly, the coil being mounted in the housing beneath the membrane; the... | 03/13/2007 |
| 7181038 | Electro-acoustic transducer An electro-acoustic transducer for driving a large surface is used to convert electrical signals into sound. The transducer has a housing with a cast aluminum bottom and a molded plastic top. The top and bottom are fastened together by screws with a gasket in betwee... | 02/20/2007 |
| 7164776 | Vibration balanced receiver A balanced receiver providing significantly reduced vibration is disclosed. The balanced receiver comprises a closed loop operably attached between an armature and a diaphragm. The effective moving mass of the diaphragm is designed to match the effective moving mass... | 01/16/2007 |
| 7072482 | Microphone with improved sound inlet port A microphone comprises a housing defining an inner volume and including a first exterior surface with an aperture leading to the inner volume. The microphone includes a transducing assembly within the housing for converting sound into an electrical signal. A sound i... | 07/04/2006 |
| 7062062 | Electromagnetic sound producing device An electromagnetic sound producing device has a yoke, a coil, a permanent magnet, and a diaphragm provided in a case. The permanent magnet is made of SmFeN-base isotropy plastic magnetic material. ... | 06/13/2006 |
| 7054460 | Micromachined magnetically balanced membrane actuator The present invention relates to an miniature actuator especially suitable for hearing aid applications. The actuator according to the present invention operates according to the change in reluctance principle. In particular, the actuator according to the present in... | 05/30/2006 |
| 7050602 | Low capacitance receiver coil The disclosure relates to electroacoustic receivers of the type which incorporate a reed armature. Thus, a receiver comprises a coil, magnets, pole pieces and a reed armature which passes through a central tunnel defined by the coil. A central portion of the reed li... | 05/23/2006 |
| 7038335 | Vertical vibrator A vertical vibrator is disclosed. The vibrator comprises a casing, a magnetic field part including a yoke and a magnet fixed to an inner surface of the yoke, a spring member fixed at one end to the casing and at the other end to the magnetic field part, a vibration ... | 05/02/2006 |
| 6968071 | Speaker having magnetic member installed on diaphragm The present invention relates a speaker having a diaphragm around the rim of a frame on the speaker for disposing a magnetic member at the center of the diaphragm along the direction of a resonant space enclosed by the diaphragm and the frame. When a winding in the ... | 11/22/2005 |
| 6920230 | Electromagnetic transducer and portable communication device An electromagnetic transducer includes: a first diaphragm; a second diaphragm provided in a central portion of the first diaphragm, the second diaphragm comprising a magnetic material having a first opening in a central portion thereof; a yoke disposed so as to oppo... | 07/19/2005 |
| 6853735 | Receiver and portable communication device An electromagnetic receiver of a balanced armature type is employed as a receiver to be mounted in a portable telephone. The balance armature receiver has lower power consumption and higher electric acoustic conversion efficiency. The balanced armature receiver prov... | 02/08/2005 |
| 6815846 | Linear voice coil actuator with a latching feature Disclosed is a linear voice coil actuator having a latching feature, the actuator having a coil assembly, a field assembly, a magnetic structure positioned in the coil assembly, and a stop which limits the position of the magnetic structure with respect to the field... | 11/09/2004 |
| 6807283 | Electroacoustic transducer A core having a coil wound thereon is fixed to a base at the bottom. The base is fixed to a case made of synthetic resin by insert molding. A diaphragm is fixed to the case in circumference, and also a magnetic flux guide member is fixed to the case in circumference... | 10/19/2004 |
| 6804369 | Electroacoustic transducer An electroacoustic transducer 1 includes a base 24 made of a magnetic material; a magnetic core 22 made of a magnetic material and upstanding on the base 24; a diaphragm 20 made of a magnetic material and spaced from a leading end ... | 10/12/2004 |
| 6778677 | Repairable electromagnetic linear motor for loudspeakers and the like An electronic linear motor particularly for use with loudspeakers includes first and second annular counterfacing air gaps centered on a motor axis. An armature and spider carry first and second voice coils in the first and second annular air gaps, respectively. A r... | 08/17/2004 |
| 6763571 | Armature assembly for balanced moving armature magnetic transducer and method of locating and adjusting same In a folded armature assembly the vibratory end portion of the armature is prelocatable both translationally and rotationally relative to the facing pole surfaces of the permanent magnetic flux means before attachment of the supported portion of the armature to said... | 07/20/2004 |
| 6757403 | Electroacoustic transducers A bobbin unit includes a base portion and a coil winding portion on which a conductor is wound. A hole is formed in a central part of the base portion to allow an armature to pass through. Coil side terminals to which ends of the conductor are fixed and signal input... | 06/29/2004 |
| 6678388 | Electroacoustic transducer An electroacoustic transducer (1) includes a base (24) and magnetic core (22) a diaphragm (20) supported with a gap between the diaphragm and a forward end of the magnetic core, a magnet (25) constituting a magnetic circuit together with the base (24), th... | 01/13/2004 |
| 6658133 | Electromagnetic transducer and portable communicating device An electromagnetic transducer according to the present invention includes: a first diaphragm disposed so as to be capable of vibration; a second diaphragm disposed in a central portion of the first diaphragm, the second diaphragm being made of a magnetic ... | 12/02/2003 |
| 6658134 | Shock improvement for an electroacoustic transducer A transducer comprising a coil having a first air gap, a magnetic member having a second air gap and an armature. The armature includes an armature leg that extends through the first and second air gaps. The armature leg is capable of movement-within the ... | 12/02/2003 |
| 6654477 | Receiver and method of construction A receiver for converting electrical energy to acoustical energy, and a method of manufacturing the receiver, are disclosed. The receiver comprises an armature having a peripheral edge, a magnet stack and a weld joint for attaching the armature to the mag... | 11/25/2003 |
| 6628800 | Electroacoustic transducer and method for manufacturing the same An electroacoustic transducer 1 is constituted by a base 24 formed of magnetic material; a magnetic core 22 formed of magnetic material and provided erectly on the base 24; a diaphragm 20 formed of magnetic material and supported with an air gap between t... | 09/30/2003 |
| 6577743 | Electroacoustic transducer and structure for mounting an electroacoustic transducer An electroacoustic transducer to be mounted on a board of a device, includes an anode conductive part which is in press contact with the board of the device, and a cathode conductive part which is in press contact with the board of the device, wherein the... | 06/10/2003 |
| 6563933 | Electromagnetic transducer for generating sound in hearing aids, particularly electronic hearing aids An electromagnetic transducer for generating sound in an electronic hearing aid has a housing containing an electromagnetic drive that has a coil, a drive magnet and an armature arrangement. Further, a membrane arrangement is provided in the housing that ... | 05/13/2003 |
