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...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!

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Class 381/428 - Fibrous

Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter in which the particular material is comprised
No. of patents: 28
Last issue date: 03/26/2013

NumberTitleIssue Date
8406452Diaphragm for speaker, speaker using the diaphragm, and system using the speaker
A loudspeaker diaphragm contains polylactic acid, and bamboo charcoal mixed in the polylactic acid. The diaphragm does not affect environment and provides a loudspeaker with high sound quality. ...
8340342Diaphragm for speaker, speaker using the diaphragm, electronic device using the speaker, and speaker-mounted device
A speaker diaphragm containing resin and carbonized bamboo material with a large degree of flexibility in setting physical properties, moisture-proof reliability and strength secured, superior appearance, and productivity and dimensional stability increased, which a...
8320604Composite loudspeaker cone
Composite loudspeaker cones that include an interstitial layer of material having a core density below 600 kg/m3 and a Young's modulus greater than 0.2 GPa, such as balsa wood, interposed between a first carbon fiber layer and a second carbon fiber layer ...
8199964Speaker diaphragm, speaker dust cap, speaker sub-cone, speaker using these components, and electronic apparatus using the same
A loudspeaker of high sound quality is achieved by improving rigidity of a material used for a diaphragm, a dust cap and a sub-cone. The diaphragm, the dust cap and the sub-cone of the loudspeaker are made of a paper beaten with the material containing bamboo fibers...
7606387Loudspeaker cone including plated fabric
A loudspeaker cone including a plated fabric is provided. The material of the loudspeaker cone is produced by laminating an interweaved plated fabric, and a light-weight and tough cloth together, and then a loudspeaker cone is produced by molding the material of the...
7344001Speaker 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...
7333620Acoustic transducer with mechanical balancing
One embodiment of a low-profile transducer includes a at least one fin perpendicularly mounted on a planar diaphragm, with a voice coil mounted onto the fin. The voice coil may reside in a strong uniform magnetic field. The locations at which the diaphragm is connec...
7311174Cloth 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 ...
7280668Ceramic metal matrix diaphragm for loudspeakers
This invention provides a method of manufacturing speaker diaphragm for a loudspeaker that has a composite material formed of two layers of ceramic material separated by a light metal substrate and where the core is formed by stamping a sheet of standard gauge alumi...
7274796Reinforced speaker damper
A reinforced speaker damper includes a ring-shaped damper body made of woven fabric in the form of a mesh and press-molded to form a wavy cross-section having alternating ridges and troughs. A plurality of reinforces is attached to the damper body. Each reinforce in...
7251342Single end planar magnetic speaker
A single end planar magnetic speaker system having at least one thin film, flexible diaphragm (72, 90) having a front side and a rear side for converting an input electrical signal into a corresponding acoustic output, the at least one diaphragm including a p...
7206427Flat panel surface array
A surface loudspeaker array uses a plurality of sound sources, such as flat panel or planar magnetic transducers, that are mounted on either a flat or a curved surface to produce a substantially controlled sound dispersion in both the horizontal and vertical planes....
7027609Diaphragm for speakers
A diaphragm for a speaker comprises a metal cone 2 and a paper auxiliary cone 4 bonded integrally to the center portion of the metal cone 2. ...
7010143Rectangular panel-form loudspeaker and its radiating panel
A structure of a rectangular panel-form loudspeaker is provided. The structure includes a radiating panel, a transducer, a frame and a suspending unit. The radiating panel includes a rectangular laminated composite plate with length b and width a, and the laminated ...
6929092Speaker diaphragm
A speaker diaphragm that has a high heat-radiation efficiency. The speaker diaphragm includes a diaphragm main body made from a resin, and a metallic plate adhered to a major acoustic surface of the diaphragm main body adjacent a voice coil bobbin. The voice coil bo...
6845169Speaker 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...
6740202Speaker 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...
6644182Method 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 printed base material in a high molecular resin material; or a...
6554962Loudspeaker 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...
6378649Speaker 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...
6097829Fiber-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...
5903658Loudspeaker 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 ...
5878150Damper 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...
5319718Loudspeaker cone and method for making same
A loudspeaker cone assembly having a generally conical cone body and an annular flexible suspension rim. In making the cone assembly, a cone body having an outer free edge is placed within a female mold having an annular channel configured to form the sus...
5283836Planar speakers
A loud speaker element including a frame which supports a planar diaphragm, an electric conductor in the form of a coil or grid being secured to the diaphragm, and magnetic field generating means being provided to generate magnetic fields which intersect ...
4975965Loudspeaker design
A loudspeaker including a diaphragm for generating sound waves, the diaphragm being comprised of a peripheral conical portion adjacent to and surrounding a central domed portion, a flared horn adjacent to the diaphragm for receiving and projecting the sou...
4969197Piezoelectric speaker
A piezoelectric speaker in which a diaphragm containing a piezoelectric driver is fixed on a frame through an elastic supporting member. The diaphragm is an assembly of two resin foam plates facing each other. Each resin foam plate has a recess and a proj...
4517416Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam
An electro-acoustic transducer has a diaphragm which comprises a layer of a polymethacrylimide foam having a modulus of elasticity between 15×106 and 120×106 N/m2 and a density between 10 and 80 kg/m3. If the ...
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