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Patent Searching and Data


Matches 451 - 500 out of 6,543

Document Document Title
WO/2004/114717A2
An improved driver assembly for a panel loudspeaker includes a retaining element for locating the voice coil with respect to the magnet assembly and forming a surface for removable attachment of the driving assembly to a radiating member...  
WO2004095881A3  
WO/2004/114720A1
The invention relates to an electromechanical transducer and a method for manufacturing the transducer. The transducer includes a membrane (3), two electrodes (1, 2), the electric field between which can be controlled or measured, and a ...  
WO/2004/105428A1
A silicon microphone is formed using the steps of providing a first wafer including a layer of heavily doped silicon, a layer of silicon and an intermediate layer of oxide between the two silicon layers. The first wafer has a first major...  
WO/2004/103017A1
A speaker used for mobile communication devices such as a mobile phone and composed of a case and two speaker elements in the case. The speaker has stable characteristics such as sound pressure-frequency characteristic. The yoke (3A) of ...  
WO/2004/100606A1
A method for manufacturing a carrier element for a hearing aid said method comprising the steps of providing a substantially flat conducting structure, moulding a plastic material around selected areas of said structure leaving at least ...  
WO/2004/098236A1
A speaker diaphragm formed by impregnating at least a thermosetting resin composition into a nonwoven fabric, followed by molding and curing, wherein the nonwoven fabric is made from fiber materials containing protein fibers, and the the...  
WO/2004/095882A1
The invention relates to a membrane (1) for a loudspeaker, characterised in that: it has a core (2) consisting of structural mousse which is very precisely cut and thermoformed to the desired geometric profile for the membrane; the exter...  
WO/2004/095881A2
The invention relates to a loudspeaker for a loudspeaker cabinet, especially a tweeter or a medium, comprising a direct radiation spherical membrane which has a concave face in relation to the spool and on which the mobile spool is posit...  
WO/2004/089036A2
A loudspeaker with a sealed enclosure having an active driver and a passive radiator mounted thereon is disclosed. The passive radiator is mounted essentially centrally in a passive radiator aperture and is held in place by a suspension ...  
WO/2004/080122A1
A condenser microphone having a housing (12), a diaphragm assembly (14) and backplate (16) located within the housing. A spacer (18) isolates the diaphragm assembly from the housing and spaces the diaphragm assembly from the backplate. T...  
WO2003043747A8
To achieve a large thickness of conductive metal-containing material in a feature of a product unit processed with a liquid-based etch process, the desired thickness of material is apportioned to the two opposing surfaces of a substrate ...  
WO2004006623A3
A loudspeaker diaphragm includes a continuous coating on at least one surface of the diaphragm. The continuous coating may be non-uniform and may taper from a maximum in value in one region of the diaphragm to a minimum value in another ...  
WO/2004/052051A1
A voice coil insertion jig comprises a hollow cylindrical insertion section (20b) formed in the lower portion of a base block for inserting a magnetic circuit, a plurality of movable pieces formed thereon, and a central recess formed in ...  
WO/2004/049757A1
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 stock material...  
WO/2004/049756A1
A paddle (142) of a diaphragm (118) or 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 aluminu...  
WO/2004/039125A1
An electroacoustic transducer combrising a housing having a first housing being bonded with the outer circumference of a diaphragm, and a second housing made of a thin metal plate being bonded to the first housing and being bonded to the...  
WO/2004/036952A2
The invention relates to a method for producing a membrane (120) used for a component, for example for a microphone. The inventive method consists in deposing a counter electrode (104) on a substrate (100), said counter electrode (104) c...  
WO/2004/030406A1
An easy−to−assemble electroacoustic transducer in which reliability can be enhanced by increasing the surface area of a diaphragm as much as possible. The electroacoustic transducer comprises a diaphragm (5) disposed in a housing (4)...  
WO/2004/016042A1
The invention provides for the construction of cones (12) of audio speaker (10) from at least some quantity of hemp fiber, alone or with other materials and/or binding chemicals. The hemp composition may range from approximately 2% to ap...  
WO2003094571A3
Electro-dynamic loudspeaker (100) typically includes a diaphragm (104) having a conductor (106) applied to one of its surfaces. The diaphragm is secured to a frame (102). The conductor is connected to a power supply for providing electri...  
WO/2004/006623A2
A loudspeaker diaphragm includes a continuous coating on at least one surface of the diaphragm. The continuous coating may be non-uniform and may taper from a maximum in value in one region of the diaphragm to a minimum value in another ...  
WO/2003/107718A1
The method of assembling a speaker includes disposing a quantity of volatile magnetic fluid containing a pre-determined amount of lubricating oil into a radial gap of a driver unit, aligning a vibration system having a diaphragm and a vo...  
WO/2003/105526A1
A method for producing the repulsion magnetic circuit of a speaker stably with high production efficiency, and a production system for use therein. Abutting position of a first magnetic circuit block fixed to a lower die (102), against a...  
WO/2003/103334A1
This publication discloses an acoustically active element formed in a multi-layer circuit-board structure (20, 22, 24, 25), a method for manufacturing it, and a multi-layer circuit-board structure. The acoustically active element include...  
WO/2003/098967A1
An edge for a speaker diaphragm in which generation of distorted sound based on the partial resonance is eliminated while reducing unevenness of quality, variation of basic frequency (fo) is eliminated, resonance of the diaphragm is rest...  
WO/2003/092916A1
The invention is directed towards structures for use with micro-formed membrane ultrasonic transducers, and methods for fabricating the structures. In one embodiment, the transducer includes a planar member having a piezoelectric materia...  
WO/2003/094571A2
Electro-dynamic loudspeaker (100) typically includes a diaphragm (104) having a conductor (106) applied to one of its surfaces. The diaphragm is secured to a frame (102). The conductor is connected to a power supply for providing electri...  
WO/2003/092325A1
A composite piezoelectric vibrator, comprising a piezoelectric ceramics, an organic high polymer, and an electrode group formed only on the surface of the piezoelectric ceramics, wherein grooves having a depth of 50 to 90% of the thickne...  
WO2002093972A3
A method of making an acoustic member for a loudspeaker having an operative frequency range and acoustic output which depends on the values of parameters of geometry, bending stiffness, areal mass distribution, damping, tension modulus, ...  
WO/2003/088369A1
A composite piezoelectric body, comprising mainly a piezoelectric ceramics and a high polymer having a bulk density reduced to 0.4 g/cm3 or less by diffusing air bubbles therein, whereby the bulk density can be lowered, an electromechani...  
WO/2003/087680A1
A thermocoustic device (110) includes a housing (120) with a thermal core supported in the housing and having a first and a second surface. The thermal core includes a first heat exchanger (112) defining the first surface of the thermal ...  
WO/2003/086010A1
The method of assembling a micro-speaker includes disposing a quantity of volatile magnetic fluid into a cylindrical gap of a driver unit, aligning a vibration system having a diaphragm and a voice coil to the driver unit such that the v...  
WO2002082855A3
A loudspeaker (104) comprising a box-form structure made from stiff lightweight sheet material to define a plurality of faces (34), at least one face (34) of the structure forming a panel-form bending wave acoustic radiator and having an...  
WO2003035281B1
There is provided methods for producing an ultrasonic transducer assembly. The methods generally comprise the steps of creating a multi-layered rigid or flexible printed circuit board (10), having a top surface and bottom surface; creati...  
WO2003021303A3
The present invention is related to a method and apparatus for limiting movement of an actuator assembly (134) in a data storage/retrieval system (100). In one embodiment of the apparatus, a base (104) is provided on which first (154) an...  
WO2002065813A3
In an electroacoustic transducer (21) with a stationary transducer part (23) and with a membrane configuration (17) comprising a membrane (15) and a handling ring (1) for the membrane (15) connected with the membrane (15), the membrane c...  
WO2003035281A3
There is provided methods for producing an ultrasonic transducer assembly. The methods generally comprise the steps of creating a multi-layered rigid or flexible printed circuit board (10), having a top surface and bottom surface; creati...  
WO2002082856A3
A loudspeaker comprising an assembly of at least two bending wave panel-form acoustic members (82, 84) each having a set of modes which are distributed in frequency, the parameters of at least two of the acoustic members (82, 84) being s...  
WO/2003/071832A1
A thin speaker having a magnetic circuit (2) disposed at the front of a cone-like diaphragm, wherein an internal magnetic type magnetic circuit (2) and a vibration system are supported by a sufficiently strong frame formed of two pieces ...  
WO2002030157A3
A preferred method includes operations to generate a watertight digital model of a hearing-aid shell by thickening a three-dimensional digital model of a shell surface in a manner that eliminates self-intersections and results in a thick...  
WO2003043747A3
To achieve a large thickness of conductive metal-containing material in a feature of a product unit processed with a liquid-based etch process, the desired thickness of material is apportioned to the two opposing surfaces of a substrate ...  
WO/2003/065765A1
A device and a method for manufacturing a speaker diaphragm, the device comprising a paper-making tank, a pulp dispersing liquid storage tank connected to the paper-making tank, an agitating means installed in the paper-making tank, a wa...  
WO/2003/059620A1
A degassed polyester varnish is applied to the transduction driver to increase surface dielectric strength (insulation resistance), driver voltage breakdown, physical protection, and heat and water resistance. A vacuum chamber applicatio...  
WO/2003/055271A1
A micro-mechanical sensor, in particular a silicon microphone, comprises a moving membrane (10) and a counter element (14) opposite thereto across a cavity (12), in which perforation openings (20) are embodied. The perforation openings (...  
WO/2003/045111A1
A piezoelectric body manufacturing method for realizing a highly reliable ultrasonic diagnosis by using one or more piezoelectric bodies of a same shape accurately manufactured so as to provide a thickness distribution, the piezoelectric...  
WO/2003/043747A2
To achieve a large thickness of conductive metal-containing material in a feature of a product unit processed with a liquid-based etch process, the desired thickness of material is apportioned to the two opposing surfaces of a substrate ...  
WO/2003/042996A1
A new fixture which is capable of holding an HSA throughout all processes is invented so that Quasi−Static Test can be done before swaging. Handling operation are reduced and rework is made much easier. The invention further provides a...  
WO/2003/035281A2
There is provided methods for producing an ultrasonic transducer assembly. The methods generally comprise the steps of creating a multi-layered rigid or flexible printed circuit board (10), having a top surface and bottom surface; creati...  
WO/2003/032684A1
A method of producing multiple paper adapted for stabilized correlation combination while reducing the amounts of drain water and industrial waste from the papermaking process for a speaker diaphragm&semi and a material composition provi...  

Matches 451 - 500 out of 6,543