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Patent Searching and Data


Matches 451 - 500 out of 6,539

Document Document Title
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...  
WO/2003/025924A1
A high−speed, write−once optical recording medium employing a laser beam blue or one with a shorter wavelength, and an optical recording method and an optical recorder for recording thereon. The high−speed write−once optical reco...  
WO/2003/024151A1
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 ...  
WO/2003/021303A2
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...  
WO2003001885A3
A multimedia and entertainment system (100) for an automobile (16) is disclosed to include a plurality of loudspeakers (32) located and distributed throughout the interior (Fig. 1) passenger compartment of the automobile (16). Loudspeake...  
WO/2003/013187A1
The invention relates to a method for production of non-planar membranes for electroacoustic converters, comprising a core layer of poly(meth)acrylimide foam and at least one outer layer, characterised in that: a) the outer layer and the...  
WO/2003/001885A2
A multimedia and entertainment system (100) for an automobile (16) is disclosed to include a plurality of loudspeakers (32) located and distributed throughout the interior (Fig. 1) passenger compartment of the automobile (16). Loudspeake...  
WO2001022776A9
A micromachined acoustic transducer (100) comprising a parylene diaphragm (124) piezoelectric transducer. The parylene diaphragm has far lower stiffness than silicon nitride. The method for fabricating the parylene diaphragm acoustic tra...  
WO/2002/093549A1
A high performance thin film acoustic resonator with excellent electromechanical coupling factor and acoustic quality factor, wherein a recess (52) is formed in a substrate obtained by forming a silicon oxide thin layer (53) on the surfa...  
WO/2002/093972A2
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, ...  
WO2002052544A3
According to various aspects of the invention, a transducer is manufactured by providing a substrate assembly, making major element cuts in the substrate assembly in a first direction, making minor element cuts in the substrate assembly ...  
WO2002015636A3
Multiple embodiments of solid state micro-structures, such as a condenser microphone, are disclosed. According to one embodiment, the transducer a fixed perforated member, a freely movable diaphragm spaced from the perforated member, a s...  
WO/2002/082856A2
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/2002/082855A2
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...  
WO2002017677A3
The invention refers to an electrostatic electroacoustical transducer (1) comprising: an electrically conductive fixed electrode plate (5), having an active surface (8) with recesses (7); a conductive or semiconductive flexible diaphragm...  

Matches 451 - 500 out of 6,539