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In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7268467 | Acoustic transducer An acoustic transducer provided with at least one sound source for generating an acoustic centre and a predetermined construction for guiding sound generated by the acoustic centre, which acoustic transducer can be fixed to a fixing wall, wherein the predetermined c... | 09/11/2007 |
| 7207907 | Ball bat having windows A bat extending along a longitudinal axis and configured for impacting a baseball or softball in competitive play includes a handle portion coupled to a barrel portion. The handle portion has a distal end and includes a tubular tapered region positioned adjacent the... | 04/24/2007 |
| 7068805 | Acoustic waveguide for controlled sound radiation Acoustic waveguide contours that approximate either or both of the Elliptic Cylinder and the Prolate Spheroidal coordinate systems that allows for a more accurate prediction and control over the sound radiation polar pattern are disclosed. ... | 06/27/2006 |
| 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 |
| 6836239 | Method and system for displaying text on a radial display A method for displaying horizontally aligned characters on a radial display is disclosed. Each range bin for each scan line is associated with a rectangular grid location to determine the character located in the grid location and the background color and foreground... | 12/28/2004 |
| 6831984 | Noise reducing A module adapted for use in a noise reduction headset earcup has an enclosure having walls separating an interior of the enclosure from an exterior of the enclosure outside the earcup. There is a driver with a diaphragm. A port connects the interior and exterior. An... | 12/14/2004 |
| 6807284 | Speaker and speaker device A speaker has a very small size and is arranged to emit sound waves in a non-directional manner. The speaker includes a case and a speaker unit attached to a plate provided at an opening of the case. The speaker is arranged so that the speaker unit is mounted or att... | 10/19/2004 |
| 6648098 | Spiral acoustic waveguide electroacoustical transducing system The invention features an acoustic waveguide and system for transmitting pressure wave energy produced by an electroacoustical transducer in a medium that propagates pressure wave energy. The acoustic waveguide and system includes a tube defining a spiral... | 11/18/2003 |
| 6581719 | Wave shaping sound chamber A loudspeaker system containing wave-shaping sound chambers with approximately rectangular inlets and outlets of substantially the same size that are used to flatten or control the curvature of the acoustic wavefronts contained within system waveguides. C... | 06/24/2003 |
| 6522759 | Speaker A reduced-size speaker for generating sound waves in wide low frequency audio region includes a cylindrical main body which is open at the top and bottom surfaces, a top lid being provided on the top surface of the main body and a circular ring-shaped bas... | 02/18/2003 |
| 6430297 | Speaker and speaker device A speaker has a very small size and is arranged to emit sound waves in a non-directional manner. The speaker includes a case and a speaker unit attached to a plate provided at an opening of the case. The speaker is arranged so that the speaker unit is mou... | 08/06/2002 |
| 6425456 | Hollow semicircularly curved loudspeaker enclosure A loudspeaker enclosure having an improved full range driver and an improved enclosure assembly. The enclosure assembly comprise a hollow semicircularly curved internal and external casing thereby forming semicircular external baffles; a series of interco... | 07/30/2002 |
| 6335974 | Speaker system for television receiver with sound ducts and perforated panels An audio apparatus for an equipment relates to an improvement of the sound quality in an acoustic apparatus of the equipment in which for an equipment having a woofer (4) and a tweeter (5), the acoustic apparatus (10) of the equipment includes a panel por... | 01/01/2002 |
| 6083075 | Animal call device An animal call device includes a sound generator part and a sound amplifier part preferably directly connected to the sound generator part for producing an amplified and reverberating or echo-like animal call signal. The sound generator part includes a mo... | 07/04/2000 |
| 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 |
| 6001132 | Preparation of aqueous solutions suitable for finishing cellulose containing textile materials Aqueous solutions of N-methylol compounds of carboxamides, urethanes, ureas and aminotriazines or of N-methylol ethers of these compounds that are suitable for finishing cellulose-containing textile materials are prepared by reaction of compounds having o... | 12/14/1999 |
| 5932850 | Speaker system A speaker system provides good acoustic characteristics for use in visual equipment, by controlling the turbulence in mid-range of response frequency characteristics to be flat so as to produce an excellent speech articulation. This is accomplished by cou... | 08/03/1999 |
| 5929392 | Speaker system A speaker system provides good acoustic characteristics for use in visual equipment, by controlling the turbulence in mid-range of response frequency characteristics to be flat so as to produce an excellent speech articulation. This is accomplished by cou... | 07/27/1999 |
| 5805708 | Speaker system for computer A speaker system for a computer includes at least one speaker disposed within a computer case, at least two sound emitting ports disposed on an exterior of the computer case, at least two sound transmitting paths each disposed within the computer case and... | 09/08/1998 |
| 5793000 | Speaker system A speaker system provides good acoustic characteristics for use in visual equipment, by controlling the turbulence in mid-range of response frequency characteristics to be flat so as to produce an excellent speech articulation. This is accomplished by cou... | 08/11/1998 |
| 5631450 | Megaphone A megaphone includes a pair of hollow bodies which are assembled at a connecting portion to open and close freely, wherein a tuning part is formed by denting the center of a flat part of each hemiconical main part to provide a level face around the tuning... | 05/20/1997 |
| 5606297 | Conical ultrasound waveguide A waveguide for projecting a longitudinal acoustic wave of wavelength λ from an ultrasound energy source toward a target area. The waveguide has at least one tubular channel. The channel has inwardly tapered, conical inlet and outlet ports separated by a... | 02/25/1997 |
| 5550921 | Stereo sound source for portable computer A dual-speaker unit providing improved stereo base response and directionality for portable computer applications is disclosed. The small speakers direct low end frequencies into a mixing chamber which directs these frequencies out through a central exit ... | 08/27/1996 |
| 5394478 | Low frequency sound generation system for use in vehicular passenger compartments A system for low frequency sound production in vehicular passenger compartments, comprising an electrodynamic driver, having a first acoustic mass and a first acoustic compliance; and a Helmhotz resonator, affixed to one side of said electrodynamic driver... | 02/28/1995 |
| 5233136 | Horn loadspeaker A horn loudspeaker has an opening formed in a wall of a horn, and a tubular duct is provided along the horn and communicated with the opening. The length L of the duct is expressed as, L.perspectiveto.c/4fr-0.4d where c is a velocity of sound, fr is a fre... | 08/03/1993 |
| 5184332 | Multiport underwater sound transducer A multiport underwater sound transducer including a hollow resilient housing enclosing a volume with at least two ported resonant chambers and a transduction driver disposed within the volume with opposite sides of the driver driving the two chambers. The... | 02/02/1993 |
| 5179255 | Baseball bat having the functions of resonators and microphones A baseball bat having the functions of resonators and microphones is designed to be hollow and has a receiver cup disposed at its inner top end in such a manner that a spring may be hooked to its bottom while the other end of the spring is hooked to a tun... | 01/12/1993 |
| 5160815 | Megaphone apparatus A megaphone apparatus includes an elongate conical conduit directed into an outwardly flaring forward body portion. The conduit includes an entrance opening, with the flaring body including a plurality of exit openings defined by a central outlet conduit ... | 11/03/1992 |
| 5068836 | Sound generating transducer A flextensional sonar transducer comprising a first cavity defined by an elliptical shell and end plates covering the two ends of the shell, vibration drive means inside the cavity and coupled between portions of the shell wall at opposite ends of the maj... | 11/26/1991 |
| 4989187 | Acoustic apparatus An acoustic apparatus comprises a resonator, a vibrator, and a vibrator drive circuit for an improved bass sound reproduction. The resonantor has a resonance radiation unit for radiating an acoustic wave by resonance, and the vibrator has a diaphragm cons... | 01/29/1991 |
| 4987564 | Acoustic apparatus An acoustic apparatus comprising a resonator having a resonance radiation unit for radiating an acoustic wave by resonance, a vibrator arranged in the resonator, and a vibrator drive means for driving the vibrator. The vibrator has a diaphragm having a di... | 01/22/1991 |
| 4546733 | Resonator for internal combustion engines A resonator for internal combustion engines having intake and exhaust pipes connected with a cylinder of said internal combustion engines comprising resonator means for absorbing resonant noises generated in said engines, a plurality of tubular connecting... | 10/15/1985 |
| 4539947 | Resonator for internal combustion engines A resonator for internal combustion engines, having an enclosed chamber of predetermined volumn connected to an intake duct by a tubular connecting member which is composed of an external member and an internal member. The internal member is disposed with... | 09/10/1985 |
| 4421957 | End-fire microphone and loudspeaker structures Highly directional response patterns can be obtained by connecting microphones or loudspeakers with tubular coupling path structures. The coupling paths comprise a plurality of elements (110,111 . . . 157) arranged in pairs (110,111; 112,113; . . . 156,15... | 12/20/1983 |
| 4413253 | Miniature sounder with double tuned cavity A miniature sounder having a diaphragm closing one end of a tuned chamber. The other end of the chamber communicates with the interior of a tuned housing. The chamber and housing are both tuned to the desired oscillating frequency of the diaphragm with th... | 11/01/1983 |
| 4299304 | Exponential folded horn speaker enclosure An exponential folded horn loudspeaker enclosure is built so that all of its components are coaxial with respect to a line that is equidistant from three cooperating surfaces, including floor or ceiling, as well as the customary two walls of a corner. Per... | 11/10/1981 |
| 4268718 | Housing acoustical amplifier A portable receiver includes a housing which operates as an acoustical amplifier to increase the output level of the audio signals produced by a sound transducer. The sound transducer is located within a cavity in the housing and emits audio signals into ... | 05/19/1981 |
| 4033431 | Acoustic crossover speaker enclosure An acoustic crossover speaker enclosure comprising a multi-sided box having an apertured baffle supporting a horn which in conjunction with the interior of the box defines an air chamber. The horn is supported in an upright position such that the throat o... | 07/05/1977 |
