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| Number | Title | Issue Date |
| 8135163 | Balanced armature with acoustic low pass filter A balanced armature apparatus is disclosed that includes dual transducers for generating sound waves in response to electric audio signals. The dual transducers include a motor assembly coupled to a diaphragm. A housing defines an interior chamber and the motor asse... | 03/13/2012 |
| 7995789 | Electroacoustic 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... | 08/09/2011 |
| 7899203 | Transducers with improved viscous damping 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... | 03/01/2011 |
| 7817815 | Armature for a receiver An armature for a receiver includes a first leg portion, a second leg portion, and a connection portion in communication with the first and second leg portions. The connection portion reduces the stiffness of the armature and minimizes magnetic reluctance of the con... | 10/19/2010 |
| 7492919 | Method for fixing a diaphragm in an electroacoustic transducer An electroacoustic transducer employing a polymer connection for maximizing volume displacement. The transducer includes a diaphragm in a case and means for converting. The diaphragm includes a central portion. The means for converting converts between an electric s... | 02/17/2009 |
| 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 |
| 7415125 | Apparatus and method for creating acoustic energy in a receiver assembly with improved diaphragms-linkage arrangement A receiver assembly includes a first diaphragm assembly having a diaphragm, and a second diaphragm assembly having a diaphragm. A linkage assembly is coupled to an armature of the receiver. The linkage assembly is also coupled to the first diaphragm assembly and to ... | 08/19/2008 |
| 7366317 | Apparatus for creating motion amplification in a transducer with improved linkage structure Various linkage assemblies are shown and described for connecting a first movable member to a second movable member of a transducer. The linkage assemblies provide for motion amplification or reduction and, when used for sound generating purposes such as hearing aid... | 04/29/2008 |
| 7362878 | Magnetic assembly for a transducer A transducer suitable for use as a microphone or receiver in a hearing aid has a housing and a diaphragm disposed within the housing. A motor assembly is also disposed within the housing and operatively coupled to the diaphragm. The motor assembly includes a magnet ... | 04/22/2008 |
| 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 |
| 7242786 | Vibrator damping A variable-reluctance type vibrator for generating vibrations in a bone anchored hearing aid. The vibrator includes a vibrator plate and a bobbin base with a vibrator gap therebetween. The vibrator gap between the vibrator plate and the bobbin base, or some other sp... | 07/10/2007 |
| 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 |
| 7206428 | Acoustic receiver having improved mechanical suspension The present invention is a receiver that includes electronics for converting an input audio signal to an output acoustic signal. The receiver has a housing for containing at least a portion of the electronics. The housing includes a port for broadcasting the output ... | 04/17/2007 |
| 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 |
| 7194102 | In-ear monitor with hybrid dual diaphragm and single armature design An in-ear monitor for use with either a recorded or a live audio source is provided. The disclosed in-ear monitor combines a pair of diaphragm drivers and a single armature driver within a single earpiece, thereby taking advantage of the capabilities of both types o... | 03/20/2007 |
| 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 |
| 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 |
| 7110565 | Electroacoustic transducer with a diaphragm, and method for fixing a diaphragm in such transducer An electroacoustic transducer employing a polymer connection for maximizing volume displacement. The transducer includes a diaphragm in a case and means for converting. The diaphragm includes a central portion. The means for converting converts between an electric s... | 09/19/2006 |
| 7088839 | Acoustic receiver having improved mechanical suspension The present invention is a receiver that includes electronics for converting an input audio signal to an output acoustic signal. The receiver has a housing for containing at least a portion of the electronics. The housing includes a port for broadcasting the output ... | 08/08/2006 |
| 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 |
| 7065224 | Microphone for a hearing aid or listening device with improved internal damping and foreign material protection A microphone and method for dampening the frequency response of the microphone by disposing a dampening frame in a rear volume of the microphone. The microphone generally includes a housing, a diaphragm, a damping frame, and a backplate. The diaphragm rests on embos... | 06/20/2006 |
| 7062063 | Electroacoustic transducer An electroacoustic transducer includes a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween. The magnetic circuit includes a magnet inducing a magnetic field in the gap, the magnet having a surface cons... | 06/13/2006 |
| 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 |
| 7033313 | Surgically implantable hearing aid The invention comprises a surgically implantable hearing aid for hearing impaired persons. The hearing aid includes a vibrational element which is vibrated by sound waves and attached to the skull of the person, and a connector which crosses the mastoid cavity and d... | 04/25/2006 |
| 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 |
| 6963652 | Low frequency generator A low frequency generator having a housing with a recess extending at least partially therethrough. A diaphragm is positioned within the recess and has at least one engagement device. A motor is positioned on an inner surface of the housing and extending substantial... | 11/08/2005 |
| 6931140 | Electro-acoustic transducer with two diaphragms The present invention relates to an electro-acoustic transducer suitable for applications within mobile communication equipment and hearing aids. The transducer comprises two diaphragms positioned on opposite sides of a magnetic circuit having two magnetic gaps. Whe... | 08/16/2005 |
| 6914998 | Speaker apparatus A speaker arrangement in which a diaphragm does not displace in directions other than a regular oscillating direction. The speaker arrangement includes a magnetic circuit having a magnetic gap, a voice coil located in the magnetic gap, a voice coil bobbin having the... | 07/05/2005 |
| 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 |
| 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 |
| 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 |
| 6681026 | Rectangular transducer for panel-form loudspeaker A structure of a rectangular transducer is provided. The structure includes a magnet assembly, a voice coil assembly and a positioning assembly. The magnet assembly has a pair of magnetic units with a gap therebetween for generating two magnetic fields ha... | 01/20/2004 |
| 6665416 | Speaker with built-in direct current motor Disclosed is a speaker with a built-in direct current motor for selectively generating sound and vibration, which includes: a speaker part, a direct current motor part, and a frame. The speaker part has a yoke having a hole formed at the center thereof, a... | 12/16/2003 |
| 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 |
| 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 |
| 6597268 | Electromagnetic device and circuit for driving the same An electromagnetic device is provided with a coil bobbin (1) supporting an excitation coil (5) and a U-shaped movable iron piece (2) whose one side (2a) is inserted in and fixed to a hollow section (1a) of the coil bobbin (1) in a state where it is held b... | 07/22/2003 |
| 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 |
| 6415037 | Speaker and the manufacturing method thereof A speaker and the manufacturing method thereof is disclosed wherein a diaphragm is enclosed by the peripheral frame, a resonant space is in the center enclosed by frame and diaphragm, and a winding is around a center seat. Winding is excited to generate v... | 07/02/2002 |
