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Class 381/403 - Centering from outside bobbin or diaphragm


Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter for the adjustment of voice coil position
No. of patents: 79
Last issue date: 02/07/2012


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NumberTitleIssue Date
8111868Speaker device
A drive cone 11 and a diaphragm 14 are integrally driven by a voice coil 6 movably disposed in a magnetic gap 5. Peripheral edge portions of the drive cone 11 and the diaphragm 14 are supported by a frame 12 via diffe...
02/07/2012
8103044Speaker device
A voice coil 6 is movably disposed in a magnetic gap 5. A drive cone (first diaphragm) 11 and a diaphragm (second diaphragm) 14 are integrally driven by the voice coil 6. Peripheral edge portion of the drive cone 11 and the ...
01/24/2012
8005253Speaker
The invention is intended to enhance the driving efficiency in a speaker being less in distortion. In order to achieve the purpose, there is provided a damper disposed rather closer to a magnetic circuit than the diaphragm, of which the inner rim is connected to a v...
08/23/2011
7844071Loudspeaker
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...
11/30/2010
7529381Multifunction-type vibration actuator and portable communication equipment
A multifunction vibration actuator is disclosed, which includes a housing (1) integrally formed with a first house part (1a) with an elliptic wall (10), a second house part (1b) having a cylindrical wall (11) with a d...
05/05/2009
7443996Loudspeaker
A high efficiency loudspeaker without a damper is provided. The loudspeaker includes magnetic circuit having a magnetic gap and a voice coil member, which has movable coil, disposed in the magnetic gap of the magnetic circuit. The loudspeaker also includes a diaphra...
10/28/2008
7382892Evenly elastically deformable damper for speaker
An evenly elastically deformable damper for speaker is disclosed to include a damper body of a plain weave fabric having elastic warp wires and weft wires intercrossed in X and Y directions and a center through hole cut through the top and bottom surfaces and bonded...
06/03/2008
7366318Suspension for the voice coil of a loudspeaker drive unit
A suspension, for the voice coil of a loudspeaker drive unit, includes an inner ring to be connected to the voice coil of the loudspeaker drive unit; an outer ring to be connected to the chassis of the loudspeaker drive unit; and a plurality of radial spoke-like mem...
04/29/2008
7360626Audio speaker with wobble free voice coil movement
A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed...
04/22/2008
7336798Speaker apparatus and method of manufacturing the same
A frame with a pot type yoke incorporated therein is held on a seating base, and an adhesive supplying means is disposed at a position located in close proximity to this seating base. A supply head of this adhesive supplying means has its supply port opposing an end...
02/26/2008
7324659Speaker and method of manufacturing the same
A frame is provided with an opening allowing insertion of a jig for setting an inner rim of a suspension holder to a proper position. The jig ensures positive alignment of the suspension holder when making connection to the frame. The jig also ensures reliable bondi...
01/29/2008
7316289Electro-acoustic transducer and method of manufacturing transducer
An electro-acoustic transducer includes a tone generator, a vibrator, and a case. The tone generator includes a diaphragm, and a voice coil joined to the diaphragm. The vibrator includes a magnetic circuit having a magnetic gap at which the voice coil is positioned,...
01/08/2008
7286681Loudspeaker
The invention relates to a loudspeaker comprising at least one magnet (5), a membrane (2) with an outer edge (32) defining an outer edge plane (30) of the membrane, a bead (3) surrounding the membrane (2), a moving coil (...
10/23/2007
7263198Loudspeaker
A loudspeaker comprises a frame, a magnetic circuit unit, a vibration unit and a snap fastening device. The frame has a recess. The magnetic circuit unit is received in the recess of the frame. The magnetic circuit unit includes a yoke. The vibration unit is receive...
08/28/2007
7263199Microphone assembly
An electromagnetic transducer is described including a magnet assembly (50) and a conductive drive coil (52). The magnet assembly provides an emanating magnetic field within which the drive coil is located. The drive coil is a flat ring coil having a w...
08/28/2007
7236607Loudspeaker with a first and a second diaphragm body
A loudspeaker includes a frame, a diaphragm and an electric driving arrangement for moving the diaphragm along an axis with respect to the frame. The diaphragm includes an outer conical first diaphragm body and an inner conical second diaphragm body invertedly orien...
06/26/2007
7225895Audio speaker with wobble free voice coil movement
A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed...
06/05/2007
7209570Speaker
A high efficiency loudspeaker without a damper is provided. The loudspeaker includes magnetic circuit having a magnetic gap and a voice coil member, which has movable coil, disposed in the magnetic gap of the magnetic circuit. The loudspeaker also includes a diaphra...
04/24/2007
7203333Speaker
A speaker has a diaphragm (16) and a suspension holder (19) supporting the diaphragm from the back surface of the diaphragm. The diaphragm has a bent section (21) disposed between its outer periphery and its inner periphery, with the portion to ...
04/10/2007
7197154Method and audio speaker with minimization of wobble of the voice coil
Speaker design/method positively centering speaker components one with the other with a unique design of the surround and radiator. Surround has a main body extending radially through more than 180°, extending from the body there is a flat outer ring and a flat inn...
03/27/2007
7190804Speaker apparatus
This invention provides a speaker apparatus that outputs sound having smooth frequency characteristics. To solve the inconvenience with the prior art, this invention is a speaker apparatus comprising a diaphragm and a cylindrical-shaped coil bobbin, and not comprisi...
03/13/2007
7171015Speaker apparatus
A speaker apparatus has a frame to which a convex paper is attached. A bobbin with a voice coil is attached to the paper cone. A magnetic circuit is formed inside the frame. A damper suspending the bobbin is composed of a corrugation portion, which is positioned ort...
01/30/2007
7167573Full range loudspeaker
An edge-driven diaphragm loudspeaker driver is configured such that the suspension system of the driver is connected to the voice coil rather than to the diaphragm. Thus, the diaphragm in the loudspeaker is free of suspension systems connected to or extending from t...
01/23/2007
7025170Speaker
A speaker in which the basket holding the voice coil, cone and damper has a ribbed top flange and a ribbed bottom flange, a gasket is capped on the suspension of the cone at the ribbed top flange and fastened thereto with screws without the use of glue, and a holder...
04/11/2006
7006652Speaker damper
A butterfly damper for supporting a voice coil bobbin of a speaker on a frame in a state that the damper is vibrative. The butterfly damper is made of olefinic resin material having an internal loss of 0.045 or greater, a tensile elongation of 200% or greater, and a...
02/28/2006
6934399Piston-type panel-form loudspeaker
A panel-form loudspeaker includes a radiating panel, a frame, a suspension unit, a transducer and a linkage unit. The frame is used for supporting and positioning the radiating panel. The suspension unit is disposed between the frame and the bottom periphery of the ...
08/23/2005
6865282Loudspeaker suspension for achieving very long excursion
An electromagnetic transducer such as an audio speaker employs a slotted yoke and two suspension components enabling very large excursion relative to the size of the diaphragm which results in improved low frequency output. A first suspension component includes an i...
03/08/2005
6862361Audio speaker
An audio speaker including a chassis and a diaphragm defining an axis. A suspension movably interconnects the diaphragm and the chassis for reciprocating movement of the diaphragm along the axis. A motor is operably connected to the diaphragm for powered movement th...
03/01/2005
6853734Audio speaker damper with electrically conductive paths thereon to carry voice coil signals and a method therefore
A linearly compliant, flexible, resilient and flat speaker damper connected between the frame and the cone of the speaker with electrically conductive paths applied to the damper to conduct the signal to be applied to the voice coil of the speaker. A method for line...
02/08/2005
6842529Speaker
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
6836551Loudspeaker
A loudspeaker includes: a bottom plate; a center pole provided upwardly from the bottom plate; a yoke surrounding the center pole and having a plurality of slits; a magnet for providing a magnetic flux for the center pole and the yoke; a coil provided between the ce...
12/28/2004
6801634Loudspeaker 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
6674871Positioning device for diaphragm for speakers
A positioning device for a diaphragm of speakers includes an inner ring and an outer ring with a plurality of connection plates connected between the inner ring and the outer ring. The positioning device is attached to a side of the diaphragm and has a wa...
01/06/2004
6665415Loudspeaker overcurrent protection
A transducer includes a motor assembly for providing a magnetic field across an air gap, a voice coil supported in the air gap, a diaphragm coupled to the voice coil for reciprocation with the voice coil, and conductors for coupling opposite ends of the v...
12/16/2003
6633649Quick release spider clamp for loudspeakers
A loudspeaker has voice coil suspended in the gap of a frame and motor by a spider and cone. The spider is attached to the frame by a clamp. The frame has a pair of contact pads formed therein. First and second retainers on the frame and clamp are releasa...
10/14/2003
6618487Electro-dynamic exciter
An electro-dynamic inertial vibration exciter (1), for exciting a member (2) having capability to sustain and propagate input vibrational energy comprising a motor coil assembly (3, 4) having a coil (3) rigidly fixed to a tubular coil former member (4), a...
09/09/2003
6597798Loudspeaker
A loudspeaker has a cylindrical frame, a magnetic circuit formed on the frame, a voice coil disposed in a magnetic gap of the magnetic circuit, a diaphragm. A damper is attached to the frame and supports the voice coil. Leads are connected to both ends of...
07/22/2003
6584209Open-type magnetic circuitry of loudspeaker
An open-type magnetic circuitry of loudspeaker includes a lower yoke having a central portion upward projected to form a bobbin, a magnet positioned on top of the bobbin, a voice coil wound around the bobbin and the magnet, and a diaphragm connected at a ...
06/24/2003
6567528Offset apex spider
An electrodynamic transducer includes a frame, a magnet assembly providing a magnetic field across an air gap, a voice coil, a coil former for supporting the voice coil in the air gap, and a diaphragm having an outer perimeter and an apex. The coil former...
05/20/2003
6526151High stability loudspeaker
A high stability loudspeaker has a yoke with a plurality of vents installed therein. The yoke is combined to a bottom of a frame of the loudspeaker. A magnet is placed in the yoke. A washer is arranged above the magnet. A periphery of the magnet is surrou...
02/25/2003
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