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| Number | Title | Issue Date |
| 8002079 | Diaphragm for speaker, speaker using the diaphragm for speaker, and process for producing the diaphragm for speaker A speaker diaphragm which includes a woven cloth which contains a thermosetting resin of thermo-cured state, and a paper board bonded and integrated with the woven cloth at the back surface. The woven cloth has its weave texture exposed on the front surface. The dia... | 08/23/2011 |
| 7708111 | Acoustic diaphragm and method for manufacturing an acoustic diaphragm There is provided an acoustic diaphragm which includes a diaphragm base material composed of a paper article comprised of fine mica flakes, pulp fibers, and polyvinyl alcohol fibers and formed to be a multi-cellular structure; and a sheet material combined with the ... | 05/04/2010 |
| 7686128 | Speaker diaphragm and speaker A speaker diaphragm includes a substrate and a surface material. The surface material is arranged on one side of the substrate, and includes a woven fabric of a polyethylene naphthalate fiber. ... | 03/30/2010 |
| 7677356 | Acoustic material and method for making the same An acoustic material includes at least a kind of synthetic staple fiber and a kind of low melting point fiber having a melting point lower than that of the at least one kind of synthetic staple fiber. Method for making the acoustic material includes the following st... | 03/16/2010 |
| 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. The loudspeaker diaphragm includes a base layer having a woven fabric o... | 12/15/2009 |
| 7527124 | Loudspeaker diaphragm Wholly aromatic polyamide fibers cut to a length of 0.5 to 5 mm are dispersedly contained in an injection-moldable thermoplastic resin, and the resin is molded by ultrahigh-speed thin-wall injection molding so as to produce a loudspeaker diaphragm in which the wholl... | 05/05/2009 |
| 7344001 | Speaker diaphragm and speaker structure A speaker diaphragm includes a base material impregnated with a thermosetting resin composition. The base material includes a first surface material, a core material, and a second surface material in the stated order; the first surface material and the second surfac... | 03/18/2008 |
| 7311174 | Cloth for loudspeaker diaphragm, loudspeaker diaphragm, and loudspeaker In a diaphragm for a loud-speaker of the present invention, an increase in tensile strength is averagely attained as a whole, and the over all diaphragm is uniformly colored without showing any lattice pattern. The diaphragm includes a woven fabric comprising yarns ... | 12/25/2007 |
| 7123738 | Loudspeaker The present invention is directed to a speaker using lightweight, highly rigid diaphragm having excellent frequency characteristic and improving resistance to environment (including resistance to UV and resistance to fading). For this end, the speaker utilizes a con... | 10/17/2006 |
| 7118649 | Device and method for manufacturing speaker diaphragm, the diaphragm, and speaker A loudspeaker diaphragm manufacturing apparatus of the present invention comprises; a paper tank, a pulp dispersion reservoir tank connected to the paper tank, a stirring means provided in the paper tank, a water inlet unit connected to the paper tank, a drain unit ... | 10/10/2006 |
| 7028549 | High-pressure sensor, method and tool for its manufacture A high-pressure sensor includes a deformation member and connection piece that is joined to the deformation member by a welded seal. The deformation member has a truncated-cone-shaped circumferential segment, via which a welding current can be supplied, in order to ... | 04/18/2006 |
| 6978861 | Connection of sound bowl of loudspeaker A connection of the sound bowl and connecting portion of a loudspeaker is disclosed. The connection area is adhered with the elastic materials similar to the materials of sound bowl and connecting portion in order to beautify the appearance of loudspeaker and enhanc... | 12/27/2005 |
| 6977110 | Foamed thermoplastic resin molding for automotive interior and production method thereof The present invention provides a speaker grille-integrated foamed thermoplastic resin molding for automotive interior comprising a base portion and a speaker grille wherein at least the base portion has a foamed layer and the foamed layer in the base portion has a d... | 12/20/2005 |
| 6957714 | Speaker and speaker diaphragm The speaker has a diaphragm main body 30 supported resiliently on a frame 23 via an edge portion 31 around its outer circumference, and the groove ribs 35 integrally formed in the edge portion 31, wherein a regulation member 37 | 10/25/2005 |
| 6956957 | Loudspeakers A loudspeaker drive unit comprising a resonant acoustic radiator, an exciter on the radiator to apply bending wave energy to the radiator to cause it to resonate, a support for the loudspeaker drive unit, and means resiliently coupling the exciter to the support. | 10/18/2005 |
| 6871724 | Electroacoustic transducer frame and method of making the same A frame of an electroacoustic transducer is made from a mixture of a thermoplastic resin and long fibers dispersed in the resin. The long fibers serve as reinforcing fibers. The long fibers have an average length sufficient to achieve a spring back effect. The sprin... | 03/29/2005 |
| 6845169 | Speaker parts and method of manufacturing same A speaker edge is molded of a rubber material with 0.1 wt % to 10 wt % short fibers added to the rubber material which ranges from 1.0 mm to 10 mm in length and are resistant to softening by heat, in which the short fibers are oriented to the radial direction of the... | 01/18/2005 |
| 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 are prevented, by additionally providing one or more sheets of damper f... | 11/09/2004 |
| 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 carbon fiber layer, wherein the fibers of the top carbon fiber layer a... | 09/14/2004 |
| 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 molded foam resin is formed by injection molding of foaming agent-containi... | 06/01/2004 |
| 6740202 | Speaker diaphragm and method of manufacturing same A speaker diaphragm is formed from a material combining a fiber-type material and a ceramic-type-coating agent including metal alkoxide, metal hydroxide, and a colloidal or fine-particulate inorganic substance. The combining process for the ceramic-type-coating agen... | 05/25/2004 |
| 6590993 | Panel-shaped loudspeaker A panel-shaped loudspeaker includes a panel (1) and an exciter coupled to the panel. The panel is provided with two parallel extending thin walls (1a, 1b) which are interconnected by a structure of thin strip-shaped partitions (1c) situated between the wa... | 07/08/2003 |
| 6585076 | Cardable fiber blend and a moldable fiber batt and the process for making a moldable fiber batt The present invention provides a cardable fiber blend which forms a moldable fiber batt, the blend comprising fibers having a modulus of 550 g/denier or more with fibers of a thermoplastic polymer wherein the high modulus polymer fibers are all uncrimped ... | 07/01/2003 |
| 6554962 | Loudspeaker diaphragm A loudspeaker in which the input resistance is improved and the effect of humidity on the playback frequency response is suppressed, and a method for the preparation of the loudspeaker. A sheet-like product, containing glass particles with a particle size... | 04/29/2003 |
| 6390232 | Speaker cone assembly A speaker cone assembly comprises a felted paper-type cone fabricated of a composite material and a molded surround. The composite cone material contains natural fibers and synthetic fibers, where the synthetic fibers are able to chemically bond to materi... | 05/21/2002 |
| 6378649 | Speaker member and manufacturing method thereof The speaker member of the present invention comprises (a) a vibrating plate part comprising a base material, a part of the base material being impregnated with a thermosetting resin; and (b) an edge part containing the same base material as that of the vi... | 04/30/2002 |
| 6334504 | 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 molded foam resin is formed by injection molding of foaming age... | 01/01/2002 |
| 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 loudspeaker is facilitated by a process in which an open neg... | 12/25/2001 |
| 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 inside a magnetic element, a spring panel sticking with a cylin... | 05/29/2001 |
| 6148953 | Loudspeaker component and resin composition therefor A loudspeaker component is made of a resin composition containing, as a main constituent, a syndiotactic polyolefin or syndiotactic polystyrene having an Mw/Mn value of no more than 4 or less. The loudspeaker component may be a diaphragm, voice coil bobbi... | 11/21/2000 |
| 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 preferred form, each carbon fiber skin comprises a sheet formed o... | 08/01/2000 |
| 6039146 | Method of manufacturing speaker diaphragm A method for manufacturing a speaker diaphragm comprising the steps of forming a plurality of virtual concentric circles between central point of a circle having a predetermined size and a circumference thereof; dividing said each concentric circle with a... | 03/21/2000 |
| 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 integrally with and extending from the diaphragm portion. The ... | 03/21/2000 |
| 6037411 | Acoustic vibrational material of fiber reinforcement with epoxy resin and epoxy-reactive polybutadiene This invention provides an acoustic vibrational material containing various fibers as the reinforcement material and having the epoxy resin as the matrix resin, wherein the epoxy resin is modified by a polybutadiene base elastomer containing not less than... | 03/14/2000 |
| 5920040 | Speaker diaphragm A diaphragm for a speaker which is adapted, to vibrate, the improvement wherein the preformed diaphragm is treated with a solution containing a polymer which readily dries at about room temperature to leave the polymer adhered to the diaphragm.... | 07/06/1999 |
| 5903658 | Loudspeaker and a method for producing the same Water-proofed natural pulp or organic synthetic fibers are with polyester-type fibers having a low melting point, and subjected to a paper fabrication process. The fabricated product is dried with hot air at a temperature higher than the melting point of ... | 05/11/1999 |
| 5878150 | Damper for a loudspeaker and a method for producing the same A damper for a loud speaker is produced by molding a substrate into a desired shape in which a fabric or knitted cloth composed of core-sheath type conjugate fibers composed of filaments having a core-sheath type structure is used as the substrate. A resi... | 03/02/1999 |
| 5875253 | Loudspeaker and a method for producing the same Water-proofed natural pulp or organic synthetic fibers are with polyester-type fibers having a low melting point, and subjected to a paper fabrication process. The fabricated product is dried with hot air at a temperature higher than the melting point of ... | 02/23/1999 |
| 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 of more than 10 and including at least 3 weight % or more o... | 08/18/1998 |
| 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 un-foamed skin layers is 1.1-3.0. The average foaming magnific... | 08/11/1998 |
