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7567680 |
Dual-diaphragm speaker assemblies with acoustic passageways and mobile terminals including the same
A mobile terminal includes a portable terminal housing and a speaker housing positioned in the portable terminal housing. The speaker housing includes a first micro-speaker having a first frequency...
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7492918 |
Audio speaker with graduated voice coil windings
An audio speaker driver having a voice coil with graduated windings such that different sections of the voice coil have different electrical resistances and/or lengths per unit of height of the...
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7447327 |
Flexible PCB voice coil connector
In an electroacoustic transducer, a pair of coil terminals elongating from a voice coil are electrically connected to a pair of terminal members attached to a frame via a flexible printed circuit...
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7443995 |
Acoustic loudspeaker
An acoustic driver has a voice coil in which adjacent turns of the coil are spaced apart. The driver is placed at one end of a foam-lined, elongated structure, such as a tube. An opposing end of...
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7433486 |
Speaker and manufacturing method for the same
A lead wire of a voice coil is wired along the surface of a diaphragm. The lead wire is bent toward a reverse side of the diaphragm at a peripheral edge portion of the diaphragm. The lead wire is...
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7403631 |
Electro-acoustic transducer
The two coil spring terminals have the structure of double coil spring terminal including a small diameter coil spring terminal and a large diameter coil spring terminal. In this case, a terminal...
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7382892 |
Evenly 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...
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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...
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7346182 |
Electroacoustic transducer and method for manufacturing the same
A diaphragm subassembly comprises a voice coil, a diaphragm, a frame, and a pair of terminal members. A magnetic circuit unit comprises a yoke, a magnet, and a base. The diaphragm subassembly and...
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7324655 |
Electroacoustic transducer
A small earphone or headphone which can produce a wide band acoustic output from a low-pitched tone to a high-pitched tone and can generate a body-sensitive vibration independent output or a...
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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...
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7263199 |
Microphone 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...
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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...
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7194104 |
Universal audio speaker connection block
A speaker interconnection block with two voice coils to be driven with separate amplifiers, or to use one amplifier to drive the two voice coils in series or parallel without having to...
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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...
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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,...
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7058195 |
Speaker 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...
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7035424 |
Loudspeaker having an inner lead wire system and related method of protecting the lead wires
A loudspeaker for generating sound from an electrical current provided by an external source may include an adapter and/or a guide for supporting, directing and routing lead wires carrying the...
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7010142 |
Electrical acoustic converter
Disposed within a space formed between a base cover ( 2 ) and a top cover ( 1 ) attached to the base cover ( 2 ) is an electromagnetic sound generating part which has a diaphragm ( 9 ) attached to...
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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...
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6940991 |
Damper for loudspeaker and method for manufacturing same
A damper for loudspeaker is constituted by mounting tubular knitted tinsel cords through an adhesive agent of acrylic emulsions having a tackiness onto one surface of a corrugated damper body. The...
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6937735 |
Microphone for a listening device having a reduced humidity coefficient
A microphone is constructed to be more tolerant to a wide range of relative humidity conditions without adversely affecting the performance of the microphone. The microphone includes a housing with...
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6853734 |
Audio 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...
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6845168 |
Speaker for an electronic instrument
A speaker has a frame made of resin, a diaphragm provided in the frame, a voice coil mounted on the diaphragm. A pair of holes are formed under the diaphragm so as to be opened at an underside of...
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6845167 |
Contacting arrangement for an electroacoustic microphone transducer
An electroacoustic microphone transducer operating electrostatically has a microphone capsule, a flexprint, and a high-resistance pre-amplifier mounted on the flexprint and arranged in the...
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6842530 |
Electric acoustic converter having a rear surface terminal
The present invention relates to an electric acoustic converter used as a speaker or a receiver of a mobile communication device such as a portable telephone or the like. In the electric acoustic...
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6831989 |
Electroacoustic transducer having a moving coil and having movable holding elements for the connecting leads of the moving coil
An electroacoustic transducer ( 1 ) having an oscillator coil ( 15 ) which has two connecting leads ( 27, 28 ) is equipped with at least one retaining element ( 33, 34 ) for each connecting lead (...
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6795563 |
Speaker for an electronic instrument
A speaker has a frame provided with a yoke, a magnet, a vibrating plate and a voice coil, and a pair of leads. An end of each of the leads is connected to an end of the coil and the other end...
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6668067 |
Electroacoustic transducer
An electroacoustic transducer ( 1 ) includes a diaphragm ( 20 ) made of magnetic material and spaced from the forward end of the magnetic core; a magnet ( 25 ); a coil ( 23 ) wound around the...
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6665415 |
Loudspeaker 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...
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6597798 |
Loudspeaker
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...
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6590991 |
Sound-vibration generator
A sound-vibration generating device includes as arranged in a main body case a sound generating unit and a vibration generating unit. The main body case has attached to a bottom portion thereof a...
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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...
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6526152 |
Electroacoustic transducer having a moving coil and elastic holding elements for the connecting leads of the moving coil
In an electroacoustic transducer ( 1 ) having a magnet system ( 8 ) and having a diaphragm holder ( 2 ) for holding a diaphragm ( 17 ) and having a moving coil ( 115 ) connected to the diaphragm (...
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6504940 |
Connecting device for connecting a sound producing device to an electronic equipment
A connecting device for connecting a sound producing device to an electronic equipment has a connector secured to the sound producing device, and having a pair of elastic contacts and an opening. A...
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6438250 |
Method for making a conductor, or electric circuit balanced in radioelectric interference such as micro-discharge and corresponding conductor or circuit
The invention relates to a manufacturing process of an electrical conductor or circuit compensated for radio interferences, including those from the electrical circuit itself. An application of a...
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6421449 |
Speaker
A speaker having a voice coil bobbin wound around with the voice coil and a detection coil together. The detection coil is formed by a wire whose diameter is smaller than one fourth of that of the...
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6370257 |
Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts
In an apparatus ( 1 ) having an electroacoustic transducer ( 14 ) and having a printed circuit board ( 51 ) the electroacoustic transducer ( 14 ) has two terminal contact elements ( 36, 37 ) and...
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6269167 |
Loudspeaker spider, method of making it and loudspeaker incorporating it
A moving coil transducer is produced by wrapping an electrical conductor around a thread and weaving the wrapped thread at a selected locating in a cloth with an overshot region. The cloth is...
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6229903 |
Mounting structure for electromagnetic sound generator
An electromagnetic sound generator is mounted on a substrate. The electromagnetic sound generator has a case housing an electromagnet, which is formed by attaching a magnet and a coil to a yoke,...
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6219433 |
Wax, copper foil flexible wire with wax and speakers using this flexible wire
This invention is intended to provide a wax excellent as a surface treating agent, a copper foil flexible wire capable of accommodating with flame resistance, and a speaker using this flexible...
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6175637 |
Acoustic transducer
An electromagnetic induction type acoustic transducer apparatus including a magnetic gap formed between a plate and a pole piece serving as assemblies of a magnetic circuit, a conductive ring...
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6158109 |
Coil manufacturing method using ring shaped spacer
A spacer for mounting around the outer peripheral surface of a bobbin. The spacer has first and second edge surfaces formed in a circular arc shape. Subsequent to the formation of a first coil by...
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6151398 |
Magnetic film ultrasonic emitter
An ultrasonic emitter device having broad frequency range capacity with relatively large diaphragm displacement compared to typical electrostatic diaphragm movement. The device includes a core...
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6072886 |
Electroacoustic transducer comprising spring contacts formed with at least one bend
In an electroacoustic transducer (1) including a substantially hollow cylindrical magnet system (9) which is substantially centro-symmetrical with respect to a transducer axis (2), a diaphragm (17)...
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6011856 |
Electroacoustic transducer and electronic equipment using the same
The present invention provides an electroacoustic transducer which realizes an optimum characteristic thereof utilizing heat caused by reflow soldering without being influenced by the same heat....
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5487114 |
Magnetless speaker
A lightweight speaker is constructed without permanent magnets by providing two coils, one of which is mounted on a movable membrane and the other of which is mounted on a fixed frame. The coils...
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5446797 |
Audio transducer with etched voice coil
An audio transducer having a voice coil formed by an etched, flexible circuit having an elongated, oblong spiral loop and rolled into a cylindrical tube. The coil cooperates with a magnetic...
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5430804 |
Loudspeaker with a coated voice coil
A loudspeaker is disclosed which includes a magnet for generating a magnetic field, an element disposed for resilient movement to generate sound waves, and an electrical conductor operatively...
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5027412 |
Voice coil with rectangular coil wire and foil leads
A coil for a speaker in which a rectangular coil wire is formed by being cut from a sheet and then wound on the bobbin with its long direction disposed radially. Electrical connection is made to at...
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