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| Number | Title | Issue Date |
| 8165336 | Voice coil and speaker A voice coil includes a cylindrical bobbin formed of a first material; a coil which surrounds on an outer circumferential surface of the bobbin; and a plurality of reinforcement members formed of a material having a propagation speed faster than the first material a... | 04/24/2012 |
| 8160291 | Voice coil and speaker A voice coil includes a bobbin formed of a wooden sheet obtained by slicing natural wood to a predetermined thickness and a coil that surrounds an outer circumference of the bobbin. ... | 04/17/2012 |
| 7970162 | Loudspeaker bobbin interconnection assembly A bobbin interconnection assembly in a moving coil loudspeaker is disclosed. The assembly includes a first coupling member fixed to a central region of a diaphragm of the loudspeaker. The assembly also includes a second coupling member that may be removably engaged ... | 06/28/2011 |
| 7925040 | Speaker A speaker may include a center pole and a voice coil bobbin having a bobbin that may include nonmagnetic and electric conductor layers and insulator layers disposed between the electric conductor layers. An electrostatic capacity, which is formed between the center ... | 04/12/2011 |
| 7864977 | Voice coil assembly and loudspeaker using the same 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,... | 01/04/2011 |
| 7864976 | Speaker 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, a... | 01/04/2011 |
| 7848537 | Voice coil bobbin, manufacturing method thereof and speaker device A voice coil bobbin is formed by skinpass rolling of pure titanium. A manufacturing method of a voice coil bobbin includes a process which manufactures a rolled pure titanium material, a process which executes skinpass rolling of the rolled material, and a process w... | 12/07/2010 |
| 7729503 | Armored voice coil assembly for use in high power loudspeaker applications An armored voice coil assembly comprises a former that is impregnated with a curable resin, preferably polyimide resin. Voice coil wire is wound around the outside surface of the former and is then preferably encased with an outer layer of resin impregnated glass fa... | 06/01/2010 |
| 7394913 | Speakers A voice coil bobbin coupled to a damper is allowed to vibrate in its axis direction within a magnetic circuit including a magnet and a plate supported by a yoke. A range extending between a neutral position of an end of the voice coil bobbin and a portion of the yok... | 07/01/2008 |
| 7362877 | Electric acoustic converter and electronic device using the same An electro-acoustic transducer wherein a stopper of a terminal is composed of an elastic body having an impulsive-force resistance and an excellent resilience. The stopper is mounted on the yoke or lower plate of magnetic circuit, which is made of a metallic materia... | 04/22/2008 |
| 7246425 | Method of manufacturing a speaker In manufacturing a speaker, ultrasonic complex vibration welding is applied at least to: a process of fixedly putting together a magnet, a pot yoke a the pole piece; a process of fixing, to a portion of an inner circumference of a frame, an outer periphery of a spid... | 07/24/2007 |
| 7239053 | Vibrator motor A vibrator motor has a stationary piece and a moving piece hinged at one end. The moving piece does not generate substantial internal spring forces under the influence of an electromagnetic field, because it does not have a tail bracket. Other parts of conventional ... | 07/03/2007 |
| 7221773 | Oval speaker apparatus and method of manufacturing the same An oval speaker apparatus includes a diaphragm whose outer peripheral shape in a plan view is oval or elliptical; an oval or elliptical voice coil for driving the diaphragm; an edge which is joined to an outer periphery of the diaphragm; and a frame to which an oute... | 05/22/2007 |
| 7200241 | Loudspeaker A speaker includes a substantially rectangular case having connection terminals at corners, a substantially rectangular voice coil, a diaphragm, and a substantially rectangular magnetic circuit. A lead drawn out from a corner of the voice coil in proximity to one of... | 04/03/2007 |
| 7177439 | Methods and apparatus for dissipating heat in a voice coil The present invention is directed to methods and apparatus for dissipating heat in a voice coil of a loudspeaker, where at least one of: a bobbin having a substantially cylindrical shaped wall member is operable to support the voice coil, and the wall member include... | 02/13/2007 |
| 7155028 | Voice coil mounting structure Disclosed is a voice coil mounting structure, which includes a reel, which has a first end mounted with a coil and a second end provided with equiangularly spaced female retaining portions, and a reel holder, which defines an annular space for accommodating the seco... | 12/26/2006 |
| 7146020 | Structure for the sound coil of loudspeaker An improved structure for the sound coil of loudspeaker comprises a cylinder provided with multiple layers of coils surrounding one end thereon. The coils are divided into sections in the middle position which provide more than two conducting wires. The cylinder is ... | 12/05/2006 |
| 7106881 | Speaker A speaker 300 is formed using a plate such as a mobile phone display window 310 as a vibrating element. At least two dynamic actuators 950 are positioned behind the edges of the window 310 to actuate the window 310 through its boun... | 09/12/2006 |
| 7095869 | Loudspeaker coil suspension system The invention provides a continuous layer of polymer that is shaped to act as the suspension, the former, and an attachment to the diaphragm. The coil may be located within the pocket providing insulation to the coil thus preventing electrical short circuiting of th... | 08/22/2006 |
| 7062061 | Speaker apparatus Supplemental portions are added to lead portions of a voice coil attached to a coil bobbin. The supplemental portions each has a shape, which can be restored repeatedly in response to stress, applied to the lead portions. In the case where stress is exerted on the l... | 06/13/2006 |
| 7057314 | Electromagnetic motor system capable of removing heat away from its magnetic gap An electromagnetic drive motor assembly (EDMA) has at least one bridge that extends along a radial direction to conduct heat away from the magnetic gap and towards the outer surface of the EDMA. The EDMA includes a conductive ring between a first plate and a second ... | 06/06/2006 |
| 7027609 | Diaphragm for speakers A diaphragm for a speaker comprises a metal cone 2 and a paper auxiliary cone 4 bonded integrally to the center portion of the metal cone 2. ... | 04/11/2006 |
| 7020302 | Speaker, speaker module, and electronic equipment using the speaker module A loudspeaker comprising an enclosure 31 provided with a second diaphragm disposed at an opening, and at least one sound generator 40 coupled acoustically with the enclosure. The sound generator is provided with a first diaphragm 27, wherein the... | 03/28/2006 |
| 7012345 | Electromagnetic motor with flux stabilization ring, saturation tips, and radiator The present invention provides an electromagnetic drive motor assembly (EDMA) that has an inner flux return assembly formed from an upper pole piece and a lower pole piece oppositely disposed relative to each other along the center of the EDMA. An annularly position... | 03/14/2006 |
| 6993147 | Low cost broad range loudspeaker and system A loudspeaker has a diaphragm with a voice coil disposed about its perimeter and extending in a gap into which the flux of an annular rare earth magnet is focused. An opening behind the diaphragm communicates through the speaker frame. The voice coil may have two or... | 01/31/2006 |
| 6980931 | System and method for controlling computer processes by means of biometric data A signal isolation system includes an aeroisolator to couple output signals to an electronic device. The aeroisolator is made from two commercial miniature earphones, each having a ferro-magnetic diaphragm activated by a voice coil in proximity to a permanent magnet... | 12/27/2005 |
| 6975741 | Electroacoustic transducer being acoustical tight in the area of its air gap for its moving coil A transducer (1) includes a transducer axis (2), a membrane (3), a magnet system (6) having an outer magnet system part (7) and an inner magnet system part (8), a moving coil configuration (27) connected to the membra... | 12/13/2005 |
| 6973194 | Speaker A speaker includes: a frame; a magnetic circuit fixed to the frame; a diaphragm fixed to the frame so as to be capable of vibrating in a predetermined direction; a driving force transmitting member connected to the diaphragm; and a damper for supporting the driving ... | 12/06/2005 |
| 6956953 | Electroacoustic transducer with field replaceable diaphragm carrying two interlaced coils, without manipulating any wires The present invention is directed to a diaphragmatic (planar) electroacoustic transducer that forms a complete sound radiating transducer and provides high efficiency and linearity. The diaphragm is easily exchangeable and rectangular in shape, and may be made of ve... | 10/18/2005 |
| 6944310 | Speaker apparatus A speaker apparatus includes an elliptical-shaped or a round-edged rectangular-shaped vibration plate; an edge damper portion disposed on an outer peripheral edge portion of the vibration plate; a recessed portion formed between said vibration plate and said edge da... | 09/13/2005 |
| 6940983 | Resonator for active noise attenuation system An active noise attenuation system for an air induction assembly is operably connected to an engine that generates a low frequency noise having a noise profile defining a peak noise. The system has an air inlet duct housing with an inlet and an outlet connected to t... | 09/06/2005 |
| 6909788 | Speaker voice coil bobbin and method of manufacturing same A voice coil bobbin 1 is formed from a material combining a fiber-type material and a ceramic-type-coating agent including metal alkoxide, metal hydroxide, and a colloidal or fine-particulate inorganic substance. The combining process for the ceramic-type-coa... | 06/21/2005 |
| 6842529 | Speaker A loudspeaker includes a bobbin, a coil, a magnetic circuit having a magnetic gap, a first cylinder fixed to the outer surface of the bobbin, a second cylinder connected with the first cylinder, a diaphragm and a damper coupled to the outer circumferential surface o... | 01/11/2005 |
| 6839444 | Loudspeakers A loudspeaker comprising a panel-form acoustic member adapted for operation as a bending wave radiator and an electrodynamic moving coil transducer having a voice coil mounted to the acoustic member to excite bending wave vibration in the acoustic member. The juncti... | 01/04/2005 |
| 6801634 | Loudspeaker coil suspension system The invention provides a continuous layer of polymer that is shaped to act as the suspension, the former, and an attachment to the diaphragm. The coil may be located within the pocket providing insulation to the coil thus preventing electrical short circuiting of th... | 10/05/2004 |
| 6792127 | Elliptical dome for high frequency transducer A high frequency transducer having a dome diaphragm with a configuration of a bisected ellipse to overcome the distortion and breaking point of prior art even domes at frequencies above 30 kHz. The dome diaphragm having an annular skirt extending therefrom in an int... | 09/14/2004 |
| 6788799 | Speaker device and associated method for manufacturing the speaker device A speaker device and associated method for producing a speaker device that includes a voice coil and a radiant layer made of a radiant energy emissive material provided on a surface of the voice coil for suppressing the heat generated at the voice coil while simulta... | 09/07/2004 |
| 6757402 | Knockdown speaker A knockdown speaker. The speaker includes a magnetic circuit base, a casing, and a vibration unit. The magnetic circuit base is substantially a hollow body having a central projecting cylinder and fixing holes in its top rim. The vibration unit is composed of a funn... | 06/29/2004 |
| 6751333 | Inertial vibration transducers An inertial vibration transducer for exciting bending waves in a sound-radiating member has a motor coil assembly with a tubular member adapted to be rigidly mounted directly to the sound-radiating member by adhesive means. The transducer has a magnet assembly suppo... | 06/15/2004 |
| 6721435 | Acoustic loudspeaker with energy absorbing bearing and voice coil, and selective sound dampening and dispersion A loudspeaker having a flux gap defined by central pole and a magnet surrounding the central pole, includes a plurality of low-friction ridges extending from an outer surface of a the central pole. A voice coil, connected to the loudspeaker's diaphragm, is free to r... | 04/13/2004 |
