Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7392880 | Dual range horn with acoustic crossover A new approach has been developed to combine mid-range and high frequency sound into the throat of a horn designed for sound reinforcement. An acoustic low pass filter element is interposed between the lower frequency passage and the higher frequency passage, so tha... | 07/01/2008 |
| 7315627 | Sound-damping laminate for loudspeaker structure A sound-damping structure is provided for use as part of a sound-directing component of a loudspeaker. The structure includes a first structural layer, a second structural layer, and a core layer enclosed between the first and second structural layers. The first and... | 01/01/2008 |
| 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 |
| 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 |
| 7252176 | Reflex-ported folded horn enclosure A low frequency exponential/hyperbolic hybrid folded horn enclosure intended for use in proximity with at least one planar surface, such as a floor, ceiling, or wall, with access to the horn throat from the top of the enclosure. The horn is bifurcated at the throat ... | 08/07/2007 |
| 7203329 | Audio speaker system employing an axi-symmetrical horn with wide dispersion angle characteristics over an extended frequency range A speaker system includes a speaker driver loaded by a horn waveguide. The speaker driver reproduces sound within an extended frequency range that includes a high frequency band between 8 kHz and 11 kHz. In the preferred embodiment, the extended frequency range incl... | 04/10/2007 |
| 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 |
| 7072481 | 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... | 07/04/2006 |
| 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 |
| 6668969 | Manifold for a horn loudspeaker and method A manifold for a horn loudspeaker has an input end having at least one input port for receiving acoustic power from at least one acoustic driver, and an output end for delivering acoustic power to the throat end of the horn. The output end of the manifold... | 12/30/2003 |
| 6591938 | Speaker diaphragm The speaker diaphragm of the present invention includes a nonwoven fabric impregnated with at least a thermosetting resin composition, molded, and cured. The nonwoven fabric is formed of a fiber material containing protein fibers. The thermosetting resin ... | 07/15/2003 |
| 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 |
| 6513622 | Full-range loudspeaker system for cinema screen A full-frequency-range cinema loudspeaker system intended or deployment in limited space behind a perforated cinema screen is configured as three modules: (1) a high-frequency module having a compression driver working into a horn-shaped waveguide that is... | 02/04/2003 |
| 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 |
| 6502662 | Speaker having a hemispherical vibrator A speaker includes a disk-shaped base. A substantially hemispherical surface vibrator is fitted into a substantially circular groove provided in the base and bonded therein. Terminals are attached to electrodes provided on both surfaces of the vibrator. T... | 01/07/2003 |
| 6394223 | Loudspeaker with differential energy distribution in vertical and horizontal planes A loudspeaker horn, loudspeaker and a loudspeaker system wherein at least one loudspeaker includes a horn composed of a waveguide, a plurality of throats acoustically coupled to a single waveguide at their mouths and to respective drivers of a plurality o... | 05/28/2002 |
| 6334505 | Optimum edges for speakers and musical instruments The invention presents a design of optimum edges for antennas of loudspeakers, microphones, hydro-speakers, hydro-phones, brass and wind instruments, and ultrasonic transducers. These edges have a serrated-roll shape, and enhance the acoustical field stre... | 01/01/2002 |
| 6064745 | Compression driver phase plug A phase plug for a horn loaded speaker has a frustro-conical body with a spherical entrance end and a planer outlet end. The plug is formed with radial channels. The entrance of the phase plug and the speaker diaphragm are conformal and the channels have ... | 05/16/2000 |
| 6059069 | Loudspeaker waveguide design A loudspeaker horn has straight wall section and a curved wall section. The straight wall section has diverging walls defining a coverage angle and the curved wall portion is connected to the straight wall portion at a point tangent thereto, and has a pro... | 05/09/2000 |
| 5991421 | Radially expanding multiple flat-surfaced waveguide device The present invention is a waveguide for an acoustic speaker having a predetermined cone weight. The waveguide body has a speaker end and an open end and an even number of segments with a flat surface in a plane parallel to the speaker end. The segments h... | 11/23/1999 |
| 5802196 | Speaker for radiating sound waves in all directions relative to a speaker supporting surface A speaker is adapted to transmit sound waves in an omni-directional manner relative to an installation surface upon which the speaker is mounted. The speaker includes an oscillator having a hemispherical oscillating body comprising a piezoelectric body po... | 09/01/1998 |
| 5778084 | Loudspeaker with phase correction The invention concerns a loudspeaker with a diaphragm which is electromagnetically induced to vibrate and is made of a central dome-shaped part and a conical part surrounding the latter, and a phase-correction device, consisting of a cone fixed in the hou... | 07/07/1998 |
| 5420563 | Motor-vehicle horn The horn includes a support casing (1 to 3) in which the peripheries of two facing diaphragms (10, 11) are restrained, a chamber (12) of variable volume being defined between the diaphragms (10, 11) and communicating with a sound-emission duct (50, 51, 70... | 05/30/1995 |
| 5351220 | Moving-coil electrodynamic electroacoustical transducer The present invention involves a moving-coil electrodynamic electroacoustical transducer, comprising a disk made of a hard, nonmagnetic material (12), which is superimposed on the diaphragm (11) and has openings for the output of sound, a power-factor-imp... | 09/27/1994 |
| 5296656 | Sound collecting and concentrating device for attaching to the back of multiple loudspeakers A loudspeaker system and a loudspeaker housing system uses a plurality of smaller rated loudspeakers to generate a high-level output. Specifically, the plurality of loudspeakers are housed in a corresponding number of substantially cylindrical sound colle... | 03/22/1994 |
| 5285025 | Loudspeaker horn A speaker horn including a first and a second pair of side walls. The first pair of side walls has a first section and a second section between first and second ends, and the second pair of side walls has a third section and a fourth section between third... | 02/08/1994 |
| 5261006 | Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube A loudspeaker system includes a housing (1) having therein at least one loudspeaker (3) which divides the volume of the housing into two parts (V1, V2). The first volume (V1) is coupled, via an aperture in the housing (1),... | 11/09/1993 |
| 5218337 | Automotive vehicle tone generator A transducer and tone generator embodying the same and method of assembling the transducer components with the use of an assembly fixture. The transducer components include a rigid annular structure, a pole piece, an electromagnetic coil assembly, and a d... | 06/08/1993 |
| 5206465 | Sound collecting and concentrating device for attaching to the back of a loudspeaker This invention relates to a loudspeaker having at least one sound collecting tubes attached to the rear of the speaker frame or the sound collecting tubes forming the speaker frame for collecting and directing sound waves emitted from the rear of the spea... | 04/27/1993 |
| 5187333 | Coiled exponential bass/midrange/high frequency horn loudspeaker Coiled exponential bass/midrange/high frequency horn loudspeakers which are characterized by a rigid cabinet of selected size having a sealed air chamber in the base thereof for receiving a low frequency speaker, or driver, a coiled or convoluted, exponen... | 02/16/1993 |
| 5181301 | Method of making a very compact audio warning system A vehicle warning system (1) is disclosed. The device includes a main housing (2) to which is attached a sound generator (7), a lighting system (4), a mounting bracket (4) which is used to attach the device to an emergency vehicle, and a trim ring (6) whi... | 01/26/1993 |
| 5163167 | Sound wave guide A wave guide fitted at the output of a loudspeaker, in front of the membrane or in front of the orifice of a compression chamber, along the axis of the transducer being considered, and comprising a conduit which expands from its input to its output. The a... | 11/10/1992 |
| 5103482 | Apparatus and method for reproducing high fidelity sound A horn-equipped loudspeaker is provided which has an electro-acoustic transducer to convert electrical signals into acoustical signals, a coil with input terminals for receiving the electrical signals and at least one movable diaphragm for the emission of... | 04/07/1992 |
| 5078074 | Vehicle horn A vehicle horn has a shield which covers the mouth of the horn's bell to prevent debris from entering the bell. A front sound opening beyond the bell mouth perimeter allows sound to project forwards while still protecting the bell and a rear sound opening... | 01/07/1992 |
| 5012889 | Speaker enclosure A loudspeaker enclosure accommodates at least one speaker in the front wall of the enclosure. The interior of the enclosure is divided into two smaller chambers by means of a partition inclined with respect to the front and rear walls. One such chamber is... | 05/07/1991 |
| 4975965 | Loudspeaker 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... | 12/04/1990 |
| 4965837 | Environmentally resistant loudspeaker A grille is attached to a woofer, and a tweeter is further mounted on the grille to mutually face the woofer and be at least partially disposed in a cavity defined by the woofer and grille to define a compact loudspeaker structure. The grille and a back o... | 10/23/1990 |
| 4930596 | Loudspeaker system A loudspeaker system which comprises a loudspeaker unit for radiating a first sound, a horn unit having a throat coupled to the back of the loudspeaker for radiating a second sound, and an acoustic filter provided in the horn for causing an acoustic imped... | 06/05/1990 |
| 4893695 | Speaker system A speaker system which has a speaker unit with a diaphragm and an acoustic path provided on the front side of the diaphragm so as to guide sound waves emitted from the diaphragm. The acoustic path is defined by a sound absorbing member. The space in the a... | 01/16/1990 |
| 4893343 | Dual diverging manifold loudspeaker system A dual diverging manifold loudspeaker system includes a generally cubically-shaped outer horn housing and an inner dome-like cap member for encapsulating therebetween a compression driver assembly. The loudspeaker system includes a back plate member which... | 01/09/1990 |
