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Match Document Document Title
7631723 Loudspeaker diaphragm and method for manufacturing the same  
A loudspeaker diaphragm having light weight and an excellent balance between a rigidity and an internal loss, and a simple and inexpensive method for manufacturing such a diaphragm are provided....
7546897 Speaker diaphragm and method of manufacturing speaker diaphragm  
A speaker diaphragm made of a resin containing a thermoplastic polymeric material is provided. The speaker diaphragm includes a changed portion formed on the diaphragm that is molded using the...
7467686 Speaker diaphragms, manufacturing methods of the same, and dynamic speakers  
On one surface of a piece of wooden sheet, a cloth or paper is adhered to make an adhered sheet. An approximately V-shaped notch is provided on the adhered sheet, the adhered sheet is wetted to be...
7332215 Resin-molded component and method for manufacturing thereof as well as diaphragm for loudspeaker  
A resin-molded component such as a loudspeaker diaphragm, in which rigidity is enhanced while light weight and high specific modulus of elasticity are maintained, is formed by applying carbon...
6912288 Piezoelectric electroacoustic transducer and manufacturing method of the same  
A piezoelectric electroacoustic transducer, including a plurality of piezoelectric layers deposited to define a deposited product, flexurally vibrates the deposited product by polarizing the entire...
6814181 Electrically conductive damper device for speaker  
There is provided an electrically conductive damper device for a speaker in which local bending is reduced and break-downs of material of the damper and metallic wires incorporated in the damper...
6804371 Speaker having a laser vibration diaphragm  
A speaker includes a housing having a diffusion opening provided with a laser vibration diaphragm. The laser vibration diaphragm has reflective spatial patterns, so that the speaker may present...
6790506 Carbon fiber layer for acoustic diaphragm  
A structure of an acoustic diaphragm adapted to be used in a planar diaphragm speaker is provided. The structure includes a bottom carbon fiber layer and a top carbon fiber disposed on the bottom...
6742622 Molded foam resin, process for forming the same and speaker diaphragm consisting of the same  
A molded foam resin, surface of which can be designed easily at low cost, a process for forming a molded foam resin, and a speaker diaphragm made of molded foam resin are provided, in which a...
6644182 Method of producing cone diaphragm having color patterns  
A method of producing cone diaphragm having color patterns includes steps of using a fiber-made thin sheet as a base material; printing the base material with a high molecular ink; soaking the...
6560348 Contact connections  
The invention proposes a contact connection for sound reproduction devices according to the flexural wave principle. Since the drive systems 21 of such installations require high current...
6453049 Acoustic diaphragm  
An acoustic diaphragm arranged to face a driving device of a loudspeaker is disclosed. The acoustic diaphragm comprises at least one laminated structure, one of which includes a first carbon fiber...
6427017 Piezoelectric diaphragm and piezoelectric speaker  
Disclosed is a piezoelectric diaphragm with a transparent piezoelectric member and a transparent electrode. Also disclosed is a portable electronic device that has a display means to display an...
6332508 Loudspeaker and method for producing the same  
The loudspeaker comprises a cone (2) and a beading (4) attached to the cone (2). The beading (4) is composed of a sprayable plastic layer which is soft in its solid state. The manufacture of the...
6275598 Sound reproduction device  
The invention presents a sound reproduction device which operates in accordance with the flexural wave principle. Such devices have in common that a panel 10 is provided in which flexural waves are...
6247551 Panel-form loudspeaker  
A panel-form loudspeaker has a resonant multi-mode radiator panel which is excited at frequencies above the fundamental frequency and the coincidence frequency of the panel to provide high...
6237716 Standard-sized vibrating diaphragm speaker structure  
The invention herein of a standard-sized Vibrating Diaphragm speaker structure, primarily includes a stand with an enlarged opening in the front and a magnetic element in the rear, a cylinder...
6097829 Fiber-honeycomb-fiber sandwich speaker diaphragm and method  
A composite loudspeaker diaphragm is disclosed having first and second substantially flat carbon fiber skins, and a honeycomb core sandwiched between the first and second carbon skins. In a...
6039145 Diaphragm-edge integral moldings for speakers, acoustic transducers comprising same and method for fabricating same  
A diaphragm for speakers comprises a self-support, shaped body including a tightly woven synthetic polymer fiber cloth substrate which has, at least a diaphragm portion and edge portion shaped...
6002648 Slotted cylinder marine siesmic method and source  
A seismic method and system for generating seismic source energy in marine geophysical operations. A slotted housing is moveable by the actuation of piezoelectric elements to generate high power,...
5796054 Loudspeaker diaphragm  
A loudspeaker diaphragm is provided as an injection molded material including 50 to 80 weight % of a matrix resin of polyolefins and 20 to 50 weight % of flaky mica having an average aspect ratio...
5793002 Loudspeaker vibrating diaphragm and methods for its production  
A loudspeaker vibrating diaphragm with has a foam layer and two un-foamed skin layers formed on both sides of the foam layer. The average foaming magnification including the foam layer and two...
5473121 Acoustic vibration plate  
An acoustic diaphragm employed in a speaker or the like and a method for producing the acoustic diaphragm are disclosed. A diaphragm substrate is a diaphragm exhibiting air permeability such as a...
5380960 Process for the preparation of films or diaphragms for acoustic applications  
Process for the preparation of films or diaphragms for acoustic applications, exhibiting improved vibration properties, and films or diaphragms obtained by this process, particularly diaphragms for...
5352506 Diaphragm  
The invention is intended to improve the durability and durability of a diaphragm of centrally convex form. A diaphragm comprises a substantially circular woven base fabric (1) formed of warp yarns...
5274199 Acoustic diaphragm and method for producing same  
An acoustic diaphragm is obtained by forming micro-fibrillated cellulose into a web by a process similar to a paper-making process. The micro-fibrillated cellulose is the cellulose obtained by...
5259036 Diaphragm for dynamic microphones and methods of manufacturing the same  
A diaphragm for microphones having a laminate structure which imparts damping characteristics to the diaphragm is disclosed. The laminate comprises upper and lower resilient layers composed of a...
5241140 Speaker diaphragm  
A speaker diaphragm has a laminated construction in which a core layer is made of a porous diamond type wafer or wafers and sandwiched by a pair of surface layers made of diamond type material....
5205897 Method of bonding loudspeaker diaphragm  
A loudspeaker component is bonded to a diaphragm formed of an olefinic resin, by applying an adhesion primer to bonding positions of the component and/or the diaphragm, applying an adhesive to the...
5206466 Diaphragm for speaker  
A speaker diaphragm includes a combined fiber paper made with crushed silk chips and a crushed bast fiber. In the preferred embodiment, the bast fiber is a natural Manila hemp fiber. The silk fiber...
5198624 Audio transducer with controlled flexibility diaphragm  
An improved audio transducer includes a diaphragm having a pair of cylindrically-shaped webs that provide greater bandwidth, reduced distortion and greater horizontal dispersion of sound. The audio...
5162619 Diaphragm for a loudspeaker  
A membrane for a loudspeaker is designed so as to facilitate manufacture and to improve the tone of the loudspeaker. The membrane consists of a first plastic film (5a) which serves to retain the...
5148492 Diaphragm of dynamic microphone  
There is a dynamic microphone comprising: a diaphragm which can vibrate by an acoustic wave and a voice coil which is joined to the diaphragm so as to transverse a magnetic field formed by the...
5080743 Process for preparation of a wholly carbonaceous diaphragm for acoustic equipment use  
A process for preparing a wholly carbonaceous integrated diaphragm for acoustic equipment use comprises blending under application of high shearing force a mixture of one or more kinds of organic...
5072806 Diaphragm for acoustic equipment  
A diaphragm for acoustic equipment wherein a surface-hardened layer of SiC film is formed on the surface of the diaphragm substrate comprising a completely carbonaceous film. Thus, the diaphragm...
5064019 Electroacoustic diaphragm and method for making same  
An electroacoustic diaphragm is provided, which diaphragm comprising a pyrolytic graphite film obtained from a polymer selected from polyoxadiazole, an aromatic polyimide obtained by...
4996119 Speaker cone plate and method of forming  
A speaker cone plate is provided with an inorganic surfacial hard layer formed at least on a face of a metal substrate and is subjected to a reinforcing treatment by hot isostatic pressing, wherein...
4907207 Ultrasound transducer having astigmatic transmission/reception characteristic  
A transducer which has an astigmatic directional characteristic which depends on its assymetrical stiffness or, respectively, speed of sound of the material of a resonant membrane (2) which is...
4847908 Loudspeaker having a two-part diaphragm for use as a car loudspeaker  
An electrodynamic loudspeaker (1) has a diaphragm comprising a central part (2) and a peripheral part (3), and a voice-coil device (9, 10) coupled to the central part (2). The surface ratio S 2 /S...
4817165 Acoustic speaker device with a diaphragm having a spider web type core  
A dome-shaped acoustic motor diaphragm having a core of aluminum foil in the form of a spider web configuration resulting in the dome shape, the diaphragm being in the form of an annular semi-dome...
4772513 Method for forming a hard carbon thin film on article and applications thereof  
A method of forming diamond-like carbon layer which is advantageously adaptable as a coating layer on acoustic diaphragms. In the method, carbon vaporized out of solid carbon source is deposited...
4699242 Magnetic speaker  
A magnetic speaker equipped with a flat diaphragm comprising a straight-grain wood plate or a cross-grain wood plate, for instance, made of Sitka spruce having the specific gravity range from 0.25...
4674592 Diaphragm for use in electro-acoustic transducer  
A diaphragm for use in an electro-acoustic transducer comprises a diaphragm main body only or mainly composed of natural fibers, a layer formed by laminating thereover a polyamide resin and a...
4646874 Loudspeaker diaphragm  
A felted paper loudspeaker diaphragm in which the felted paper of the annular supporting flange is thinner, and of lesser density and higher compliance than the cone body. The supporting flange is...
4620606 Loudspeaker of plane diaphragm type  
A loudspeaker of plane diaphragm type has a skin-like material with smaller diameter than that of the plane diaphragm pasted thereon so that the skin-like material will not stick out of the...
4562899 Diaphragm of electroacoustic transducer and method of manufacturing the same  
A diaphragm of a loudspeaker is made up of a plurality of laminated composite sheets each including a number of fibers, for example, carbon fibers having a high Young's modulus to density ratio,...
4552243 Diaphragm material for acoustical transducer  
An improved diaphragm material for use with an acoustical transducer, such as a moving-coil electrodynamic loudspeaker and a loud speaker containing such diaphragm, which diaphragm comprises a...
4531608 High frequency compression driver  
A compression speaker driver has a relatively stiff, light weight diaphragm 11, including a dome portion and a rim portion around the periphery of the dome portion. The mounting plate 17 has an...
4518642 Loudspeaker diaphragm and method for making same  
A loudspeaker diaphragm is disclosed which is formed of a slurry of cellulose fibers and polypropylene fibers. In the fabrication of the diaphragm, a felt is made of the slurry, and the felt is...
4512435 Diaphragm for loudspeakers  
The present invention is directed to a diaphragm for loudspeakers which is integrally constructed through the combination of a core material being formed as a disc-shaped solid construction through...
Matches 1 - 50 out of 86 1 2 >