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Patent Searching and Data


Matches 551 - 600 out of 6,562

Document Document Title
WO2000069214A3
A method of making a loudspeaker comprising attaching a vibration exciter to a bending-wave panel by bringing the vibration exciter and the panel into contact over an area, and applying ultrasound energy to the contact area.  
WO2000059262A3
The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pres...  
WO/2000/074915A2
The aim of the invention is to increase hearing aid packing density. To this end, at least two elements that are to be assembled on the hearing aid and that are produced from different materials are produced by two- or multicomponent inj...  
WO/2000/076269A1
The invention relates to a method for producing a membrane for electroacoustic transducers, comprising a core layer (3) consisting of poly(meth)acrylimide foam and at least one cover layer (4). The cover layer (4) is laminated with the c...  
WO/2000/072631A2
The present invention provides a transducer and a method of making the same. The transducer is comprised of a plurality of transducer cells (200A, 200B, 200C), and conductive interconnects (220, 230) between the cells. Each transducer ce...  
WO/2000/070910A2
A method of making a structural or semi-structural object e.g. a car interior trim panel, comprising an integral bending-wave panel loudspeaker, characterised by thermoforming the object from a thermoformable panel material.  
WO/2000/070908A2
A loudspeaker comprising a bending-wave panel, an enclosure in which the bending-wave panel is mounted to enclose one face of the panel, a compliant suspension between the panel and the enclosure by which the panel is supported in the en...  
WO/2000/069214A2
A method of making a loudspeaker comprising attaching a vibration exciter to a bending-wave panel by bringing the vibration exciter and the panel into contact over an area, and applying ultrasound energy to the contact area.  
WO/2000/060902A1
A method for manufacturing an electroacoustic transducer for, for instance, a hearing aid, with a diaphragm (5) arranged in a housing (2). According to the invention, the diaphragm is attached onto a film or punched from a sheet of mater...  
WO/2000/059262A2
The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pres...  
WO/2000/058073A1
An arrangement (1) for and a method of manufacturing a plastic diaphragm (2) use a deep-drawing station (20) which has a deep-drawing die (33) of a sintered material, air present between the front surface (34) of the deep-drawing die (33...  
WO/2000/054555A1
A speaker edge having a high strength, a less variation of f¿0?, a high waterproofness, and a small amplitude of resonance, easily moldable, and easily produced integrally with the corn body. The speaker edge is molded by inputting a ma...  
WO/2000/045616A1
A method of making a vehicle interior trim panel having at least one integral resonant bending wave loudspeaker panel, comprising designing the trim panel to comprise at least one panel area capable of and intended to operate as a resona...  
WO/2000/009440A1
The invention relates to a micromechanical sensor and to a corresponding production method, comprising the following steps: a) preparing a doped semiconductor wafer (4); b) applying an epitaxial layer (1) that is doped in such a way that...  
WO2000003560A3
The recess is produced in a material layer (S) by creating at least a first (S1) and a second structure (S2) in various steps. Said layers define each other laterally and extend to the bottom of the recess. The first structure (S1) and t...  
WO/2000/007409A1
A method of making an acoustic device in the form of a loudspeaker drive unit having a resonant panel-form member adapted to provide an acoustic output when excited with bending wave energy, comprising forming a resilient suspension for ...  
WO/2000/005001A1
An ultrasonic transducer and method of making the same is disclosed comprising applying a sacrificial material to a substrate (20), applying a polymer coating (24) over at least part of the sacrificial layer and the substrate (20), and r...  
WO/2000/003560A2
The recess is produced in a material layer (S) by creating at least a first (S1) and a second structure (S2) in various steps. Said layers define each other laterally and extend to the bottom of the recess. The first structure (S1) and t...  
WO/1999/065277A1
A method of manufacturing a transducer of the type having a diaphragm (11) with a predetermined tension. After the transducer has been manufactured with its basic structure the diaphragm is adjusted to have a predetermined tension, which...  
WO/1999/065272A1
A method of producing a speaker diaphragm used in a variety of acoustic devices and a speaker diaphragm formed by this method and a speaker using this; specifically a method of producing a speaker diaphragm capable of preventing the defo...  
WO/1999/060820A1
The invention concerns the embodiment of drivers for panel loudspeakers. Panel loudspeakers working according to the principle of bending waves are already known in prior art. Said loudspeakers generally consist of an acoustic panel (11)...  
WO/1999/059172A1
Thin electret layer with a layer thickness of less than 200 $g(m)m made of polymers containing fluorine. The mean chain length of the polymer chain contained in the layer produced by evaporation, sputtering, ablation, blowing or dispersi...  
WO/1999/057712A1
A method of applying a matching layer to a transducer includes placing the transducer on a fixture and covering the transducer with a stencil so that an opening in the stencil allows access to a metal-coated, piezoelectric surface of the...  
WO/1999/035204A1
A synthetic chloroprene rubber adhesive composition which comprises a carboxylated synthetic chloroprene rubber as a major component and further contains a chlorinated polypropylene and/or a chlorinated polypropylene derivative. The comp...  
WO/1999/028626A1
The invention concerns a vacuum pump element with liquid discharge rate and pressure comprising means (21, 22) for forced circulation of the liquid by an electrodynamic transducer mobile in translation (40) consisting of a piston (41) en...  
WO/1999/026261A1
The invention is embodied in an electrical device which includes at least a layer of a ferroelectric polyvinylidine fluoride polymer that has been processed to exhibit an electrostrictive strain of 4 % or more when an electric field grad...  
WO/1999/022882A1
A high quality electric-mechanical-acoustic transducer used mainly in mobile phones which is not damaged and degraded in performance by drop and impact. The transducer comprises at least one suspension (14) that supports a movable sectio...  
WO1999008474A3
The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pres...  
WO/1999/008474A2
The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pres...  
WO/1998/058520A1
A tweeter has its voice coil former and diaphragm integrally formed as a single unit. The magnet, pole piece and plate are encapsulated as a complete magnetic circuit in an injection moulded casing. A robust, inexpensive and easy to manu...  
WO1998041055A3  
WO/1998/053640A1
Flat knitted tinsel wires (2h) are sewn on a base cloth (B) of a conductive suspension (1) with a sewing thread (3) and the ends (2ha, 2hb) of the flat knitted tinsel wires extend outward from the conductive suspension (1). In this suspe...  
WO/1998/041055A2
The invention relates to a loudspeaker with a cone (2) and beading (4) connected thereto (2). Said beading consists of a sprayable plastic layer which is soft in a solid state. An open negative mould (16) is used in the method to produce...  
WO/1998/037388A1
Multiple embodiments of a solid state condenser transducer, and methods of manufacture, are disclosed. The transducer (10) comprises a semi-conductor substrate forming a frame (11) and having an opening, a thin-film cantilever structure ...  
WO1998019140A3  
WO1998010252A3  
WO/1998/019140A2
A silicon substrate (1) comprising an integrated doped area (5), a spacing layer (7) with an etched out cavity (8) and a membrane (2) placed on top on the spacing layer. The doped area and the membrane are electronically connected to ele...  
WO/1998/010252A2
A capacitive electroacoustic transducer (10) which includes an electrically insulative substrate (19), a layer of conductive material disposed (16) on a portion of a top surface of the substrate forming a first electrode of the transduce...  
WO/1997/039464A1
A method of making an electret microphone comprising juxtaposing a microphone membrane unit (30) and a microphone back plate (32), at least one of which includes a micro-machined electret layer (6) formed on a support structure, thereby ...  
WO1997009842A3  
WO/1997/016049A1
A sound transducer made of polyvinylidene fluoride (PVDF) and a method for making and integrating same into a card designed to generate acoustic signals for transmission over a telephone line, are disclosed. The method mainly comprises f...  
WO/1997/009842A2
Acoustic device (81) including a member (2) extending transversely of its thickness and capable of sustaining bending waves at least over an intendedly consequentially acoustically active area of the transverse extent of said member, the...  
WO/1997/003537A1
An improved surround design (70) for a loudspeaker assembly is disclosed wherein the outside edge of the surround is attached to the outer edge of the loudspeaker's frame (52) via a permanent (adhesive) or removable element (80). When re...  
WO/1995/026616A1
A method of making a woven spider (40) comprising selecting a thread (60) of the cloth (70) from which the spider (40) is to be woven, wrapping the selected thread (60) with an electrical conductor (66) and weaving the wrapped (66) threa...  
WO/1995/011579A1
A method of assembling an annular magnet (16) and a pole piece (14) in a chamber (22) of a cyclindrical core (12) at a predetermined height is disclosed. The magnet assembly tool (50) has a firstportion (52) with a diameter of approximat...  
WO/1995/001079A1
A folded dielectric film element functioning as an energy converter, consisting of a dielectric film (1, 2) bent into folds (L) and provided with electrodes (K). The electrodes (K) are so arranged in the folds (L), different electrodes b...  
WO/1994/016826A1
An ultrasonic transducer array (10), and a method for manufacturing it, having a plurality of transducer elements (12) aligned along an array axis (A) in an imaging plane. Each transducer element (12) includes a piezoelectric layer (22) ...  
WO/1993/023966A1
A loudspeaker cone assembly having a generally conical speaker cone body (12) and an annular flexible suspension rim (14). The suspension rim (14) may include an annular integral gasket (20), and is formed from a plastic foam which may b...  
WO/1993/020667A1
A transducer for use in an active noise cancellation system is particularly adapted for use as a motor vehicle exhaust muffler (12) by physically designing the transducer (32) to optimize magnetic flux with increases in temperature throu...  
WO/1993/018627A1
An electret microphone assembly, such as for a hearing aid comprises an electret microphone having a diaphragm and a charged plate, a substrate spaced from the charged plate, and a wire loop having first and second ends and a mid-portion...  

Matches 551 - 600 out of 6,562