Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8050442 | Cascaded transducer array arrangement for control over an acoustic pressure gradient through a horn A horn based loudspeaker system provides control over peak to peak pressure of an acoustic signal across its frequency spectrum. Frequency spectrum matched acoustic energy added to the acoustic signal at diverse points distributed along the horn. ... | 11/01/2011 |
| 7920712 | Coaxial mid-frequency and high-frequency loudspeaker A loudspeaker is provided for receiving an electrical signal and transmitting an acoustic signal through a transmission medium. The system includes generally two elements: a coaxial transducer and an acoustic transformer. The coaxial transducer includes a high-frequ... | 04/05/2011 |
| 7773765 | Rectangular horn for varied acoustic drivers A loudspeaker assembly is described suitable for flown arrays and incorporating a horn load planar or ribbon transducer. Planer acoustic transducers have a relatively limited power output capacity. Addition of a horn suitable for an elongated source effectively ampl... | 08/10/2010 |
| 7360626 | Audio speaker with wobble free voice coil movement A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed... | 04/22/2008 |
| 7352875 | Speaker apparatus The present invention provides a speaker apparatus which has a simple structure and a high directivity and which can emit sound. The speaker apparatus includes a hood having an opening at a front end with a sound reflecting inner wall shaped like a rotating surface ... | 04/01/2008 |
| 7324656 | Wide dispersion speaker system and cover mounting structure for instrument directly mounted to flat portion A wide dispersion speaker system 1 comprises a cone type speaker unit 2, and a restricting element 10A. The restricting element 10A is provided with a center hole 11 at a center section thereof, and a peripheral hole 12 loca... | 01/29/2008 |
| 7299893 | Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources A loudspeaker horn (11) having a throat end (13) for receiving acoustic power from aligned acoustic power sources (41, 43, 45), an elongated throat (33), and a flared section (17) is provided with grating lobe mitigation fins (2... | 11/27/2007 |
| 7278513 | Internal lens system for loudspeaker waveguides This invention provides a lens system for a loudspeaker. The loudspeaker may include a driver unit and a waveguide attached to the driver unit. The loudspeaker further may include a lens system. The lens system may include a plurality of plates. The plates may be po... | 10/09/2007 |
| 7277012 | Broad field motion detector A motion sensing system device and method which utilize dispersed ultrasonic radiation is disclosed. The system preferably comprises a low profile sensor unit configured to couple to a ceiling position. The sensor unit comprises an ultrasonic transmitter and an ultr... | 10/02/2007 |
| 7275621 | Skew horn for a loudspeaker A horn including a substantially flat coupling flange defining a coupling flange plane, a substantially planar mouth defining a mouth plane, an elongated throat extending between the coupling flange and the mouth, a transducer for generating a sonic output operation... | 10/02/2007 |
| 7236606 | Sound system having a HF horn coaxially aligned in the mouth of a midrange horn A sound system is provided that groups a midrange horn with a high frequency (“H”) horn. The sound system includes an HF horn coaxially coupled to a midrange horn, and two HF drivers aligned edge-to-edge. The sound system further includes two midrange drivers al... | 06/26/2007 |
| 7225895 | Audio speaker with wobble free voice coil movement A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed... | 06/05/2007 |
| 7218743 | Speaker module and apparatus using this A speaker module includes a first diaphragm and a second diaphragm acoustically coupled with each other as a part of a wall forming a hermetic space with a panel. A light emitting section emits light to the panel, and the panel transmits the light to a side of the s... | 05/15/2007 |
| 7190126 | Daylight control system device and method A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller uni... | 03/13/2007 |
| 7185735 | Audio speaker with wobble free voice coil movement A speaker that is designed to substantially eliminate wobble of the voice coil during operation, and thus remove that source of distortion and early failure of the speaker. This is accomplished with the creation of triangular ring that extends upward from the top ed... | 03/06/2007 |
| 7178629 | Electroacoustic public address unit with acoustic horn or waveguide A horn or waveguide public address unit, enabling to adapt the dispersion characteristics of the horn or waveguide. The unit is provided with at least one profiling component (21a, 21b) constituting a removable dispersion shaper, capable ... | 02/20/2007 |
| 7177437 | Multiple aperture diffraction device A horn assembly for high frequency acoustic speakers. In an array of speakers, a spacing between adjacent speakers needs to be less than the wavelength of sound being emitted in order to combine effectively. For high frequency sound, a relatively small wavelength im... | 02/13/2007 |
| 7164110 | Diode-based light sensors and methods The present invention provides an illumination management system that includes a first LED that outputs a first signal when exposed to a first spectrum of light, the first signal indicating an intensity of light from the first spectrum; a second LED that outputs a s... | 01/16/2007 |
| 7134523 | System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers This invention provides a radiation boundary integrator (“RBI”) for integrating sound radiation from mid-range and high-frequency sources in multi-way loudspeakers. The RBI is a substantially solid boundary that is placed over the mid-range speakers to provide s... | 11/14/2006 |
| 7093688 | Structure for preventing the generation of standing waves and a method for implementing the same A speaker assembly includes a speaker mounted within a housing having a front plate and a base plate. The speaker is inclined with respect to the front plate. The base plate includes one of an inclined type structure, a convex type structure, a radial rib type struc... | 08/22/2006 |
| 7095868 | Phase plug with optimum aperture shapes A phase plug for optimally matching a drive-unit's diaphragm to the throat of a waveguide is disclosed. Specific embodiments of a circular diaphragm matched to an elliptical waveguide and a circular diaphragm to a rectangular waveguide are disclosed. ... | 08/22/2006 |
| 7050600 | Speaker system, mobile terminal device, and electronic device A speaker system includes a display panel for displaying an image; a transparent panel provided such that the image displayed in the display panel is viewed through the transparent panel; an electric-mechanical-acoustic-transducer having a diaphragm for outputting a... | 05/23/2006 |
| 7046816 | Coincident source stereo speaker A coincident source stereo speaker in accordance with the present invention includes a high-frequency component (tweeter) and a low-frequency component (woofer) that are separated by a sound channel. The tweeter emits a first sound pattern directly outward from the ... | 05/16/2006 |
| 7027605 | Mid-range loudspeaker A midrange loudspeaker for operation in conjunction with low-frequency and high-frequency loudspeaker modules in a theater sound system, having a reduced depth for deployment in limited space. The midrange module is configured with a plurality of drivers and a waveg... | 04/11/2006 |
| 7027610 | Loudspeaker A loudspeaker contains a hemispherical vibrator. The end portion of the hemispherical vibrator on the side opposite to the hemispherical curved surface is mounted on the main surface of a first circular baffle board. On the opposite side of the first baffle board fr... | 04/11/2006 |
| 6996243 | Loudspeaker with shaped sound field The loudspeaker and method provide a driver of a loudspeaker that is movable parallel to an axis of movement through a center of the driver to produce sound waves. The driver is aligned with the driver plane orthogonal to the axis of movement. The driver plane is at... | 02/07/2006 |
| 6981570 | Loudspeaker system with common low and high frequency horn mounting The invention relates generally to the field of audio loudspeaker enclosures, and more particularly to a method of mounting the internal components in the loudspeaker so as to control the loudspeaker output. Specifically a mounting structure and method for mounting ... | 01/03/2006 |
| 6961438 | Loudspeaker system having wide-directional characteristics A loudspeaker system having wide-directional characteristics includes a loudspeaker body having a polyhedron shape, preferably of dodecahedron and a plurality of speakers disposed on outer surfaces, respectively, of the polyhedron-shaped loudspeaker body in a manner... | 11/01/2005 |
| 6952874 | Two-stage phasing plug system in a compression driver This invention provides a two-stage phasing plug located within a compression driver. The two-stage phasing plug housed within the compression driver may be coupled to a horn. The two-stage phasing plug includes first and second phasing plugs. The advantages of havi... | 10/11/2005 |
| 6950530 | Directional loudspeaker unit A directional loudspeaker unit for reproducing mid-range audio frequencies, comprising a cone loudspeaker and, disposed forwardly of the surface of the cone of the loudspeaker, a phase plug and a horn, wherein the phase plug and preferably also the horn are arranged... | 09/27/2005 |
| 6933486 | Illumination management system The present invention provides an illumination management system that includes a first LED that outputs a first signal when exposed to a first spectrum of light, the first signal indicating an intensity of light from the first spectrum; a second LED that outputs a s... | 08/23/2005 |
| 6870942 | Loudspeaker for line array sound system A loudspeaker assembly includes a housing defining a bass-reflex enclosure. The housing has a trapezoidal cross-sectional shape in a vertical section running from front to back of the housing. A conventional low frequency cone woofer is mounted in an aperture in the... | 03/22/2005 |
| 6744895 | Loudspeaker A loudspeaker has first and second diaphragms provided in a case. A first voice coil is provided for vibrating the first diaphragm, and a second voice coil is provided for vibrating the second diaphragm. A first permanent magnet is provided for applying a magnetic f... | 06/01/2004 |
| 6628796 | Axially propagating mid and high frequency loudspeaker systems A loudspeaker system of improved clarity, coherence and uniformity of energy distribution containing mid frequency sound chambers with an annular input and approximately rectangular output for use in multi-way co-axial horn loaded line array systems. The ... | 09/30/2003 |
| 6621909 | Horn loudspeaker and loudspeaker systems A horn loudspeaker comprises: a horn (22) having a throat (26) and a mouth (30); a primary electro-acoustic driver (24) mounted at or adjacent the throat of the horn and directed generally along the horn; and at least one secondary electro-acoustic driver... | 09/16/2003 |
| 6574344 | Directional horn speaker system A directional speaker system includes an enclosure having an inner surface, an outer surface, an open end, and a closed end, a speaker driver directed toward the open end and mounted near the closed end of the enclosure, an in-line phase plug mounted in f... | 06/03/2003 |
| 6516076 | Modular horn loudspeaker A modular horn loudspeaker principally intended for use on emergency vehicles consists of three coaxially aligned cup-shaped parts, a sound chamber, a cover fitted to the sound chamber and a housing. The first embodiment of the modular, compact horn louds... | 02/04/2003 |
| 6411718 | Sound reproduction employing unity summation aperture loudspeakers The present invention relates to systems and methods for sound reproduction employing a unity summation aperture loudspeaker horn taking advantage of the frequency response of horn flare characteristics for positioning of audio drivers along the outer wal... | 06/25/2002 |
| 6393131 | Loudspeaker A loudspeaker includes a cabinet designed so as to define a central compartment sandwiched between upper and lower compartments. The cabinet is symmetrical about a vertical central, fore-and-aft extending plane. Located in each of the upper and lower comp... | 05/21/2002 |
| 6356642 | Multi-speaker system A multi-speaker apparatus generates and transmits sound waves in all directions toward and away from a surface upon which the apparatus is installed or mounted. The multi-speaker apparatus includes a middle/high frequency sound range speaker and a low fre... | 03/12/2002 |
