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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 8175311 | Electroacoustic waveguide transducing An acoustic waveguide system, having source of acoustic radiation and a source of opposing acoustic radiation. An acoustic waveguide has an open end and an interior. A first acoustic driver having a first radiating surface and a second radiating surface is arranged ... | 05/08/2012 |
| 8170254 | Low profile loudspeaker A loudspeaker includes a toroidal shaped housing and at least one driver positioned within the housing. The driver is mounted within an arcuate enclosure such that a forward portion of the driver transmits sound beyond the enclosure and the rearward portion of the d... | 05/01/2012 |
| 8160285 | Waveguide unit The present invention concerns a waveguide unit, for use with a transducer unit, and in particular transducer of the dome type, where the wave guide unit is substantially circular, and suitable to be arranged around the transducer, where the wave guide unit has a fr... | 04/17/2012 |
| 8111854 | Methods and apparatus for sound production Electrical signals corresponding to sound are received at a wire, and sound is generated at a speaker connected to the wire. The sound is resonated in a cavity of a shell housing the speaker, and then passed along a transmission tube toward a pinna of a user's ear w... | 02/07/2012 |
| 8103035 | Portable audio system having waveguide structure An apparatus includes a housing. A waveguide is located within the housing. The waveguide includes a first subsection that bends around a first axis and has a first cross-sectional area with an aspect ratio that is substantially different from unity. A second subsec... | 01/24/2012 |
| 8090131 | Steerable acoustic waveguide A steerable acoustic waveguide apparatus includes plural plates arranged in one or more linear arrays. Steering of an acoustic beam radiated from the waveguide apparatus may be achieved through differential delays of acoustic signals resulting from differences in ti... | 01/03/2012 |
| 8019107 | Earset assembly having acoustic waveguide An earpiece may be used to detect sounds from an ear canal of a user. The earpiece may include a microphone assembly and an acoustic pathway that is at least partially defined by a hollow elongated member. The acoustic pathway fluidly couples the microphone assembly... | 09/13/2011 |
| 7936892 | Constant coverage waveguide This invention provides an acoustic waveguide with a continuous least-energy-surface formed from an upper vertical control curve, a lower vertical control curve, right horizontal control curve and a left horizontal control curve. In addition, a circular throat end a... | 05/03/2011 |
| 7801320 | Sound sponge for loudspeakers The specification and drawings present a new method and apparatus for reducing loudspeaker size by partitioning the back cavity of the loudspeaker using a sound sponge block. The sound sponge block is an array of narrow ducts (e.g., parallel ducts, or parallel round... | 09/21/2010 |
| 7623670 | Waveguide electroacoustical transducing A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said cross-sectional area of the exit end is less than the cross-sectional area of the inlet end. In a second aspect... | 11/24/2009 |
| 7558395 | Loudspeaker A loudspeaker comprising a housing provided with a magnet unit that generates a magnetic field and a membrane which is mounted in a frame and which is provided with an electrical conductor arranged in a pattern on the membrane, which membrane is positioned in the ma... | 07/07/2009 |
| 7536024 | Loudspeaker A loudspeaker comprising a loudspeaker drive unit being operable to radiate sound in a forward direction and a rearward direction and an enclosure configured to receive sound radiated in the rearward direction. The enclosure comprises a passageway system comprising ... | 05/19/2009 |
| 7522741 | Electro-acoustic apparatus comprising an electro-acoustic transducer In the case of an electro-acoustic apparatus (1) having a housing (2) with a housing wall (9) and having an electro-acoustic transducer (17) that is arranged facing the housing wall (9), a front chamber volume (31) that form... | 04/21/2009 |
| 7436972 | Folded coaxial transmission line loudspeaker A loudspeaker has a loudspeaker driver and a first tube having a base end coupled to the driver and extending towards the rear end of the loudspeaker. A second tube of larger cross sectional dimensions extends over the first tube and loudspeaker driver and has a rea... | 10/14/2008 |
| 7426280 | Electroacoustic waveguide transducing An acoustic waveguide system, having source of acoustic radiation and a source of opposing acoustic radiation. An acoustic waveguide has an open end and an interior. A first acoustic driver having a first radiating surface and a second radiating surface is arranged ... | 09/16/2008 |
| 7410029 | Bass reflex type loudspeaker apparatus, loudspeaker box and image display apparatus A bass reflex type loudspeaker apparatus is provided in which a long route of a bass reflex duct is obtained in the case where a loudspeaker box is made thin. The bass reflex duct is provided in the loudspeaker box such that the route thereof is extended in a... | 08/12/2008 |
| 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 |
| 7379556 | Speaker device A speaker device includes an acoustic capacity unit; an acoustic pipe connected to the acoustic capacity unit; and a driving speaker attached to the acoustic capacity unit. The acoustic capacity unit and the acoustic pipe constitute the Helmholtz resonator, and reso... | 05/27/2008 |
| 7356155 | Device and method for assisting vocalists in hearing their vocal sounds The present invention, in one embodiment, includes a reverb device and method for assisting vocalists in hearing their vocal sounds. The reverb device includes a vocal sound receiver, a sound director coupled to the vocal sound receiver and an ear sound deliverer co... | 04/08/2008 |
| 7340221 | Adapter for a modular wireless communication device An adapter for a modular wireless communication device. The adapter can include a lanyard, a cradle coupled to the lanyard, the cradle configured to support a short range wireless communication module, the cradle including an audio plug configured to provide a conne... | 03/04/2008 |
| 7324653 | Suspension means for transducer A suspension tube for a transducer, wherein the suspension tube also functions as a sound-guide for directing sound between the transducer and the external cabinet of an audio processing device, wherein the suspension tube has means for forming a connection with the... | 01/29/2008 |
| 7280665 | Image display device with built-in loudspeakers An image display device has a main display body provided with a thin display unit, a low-frequency loudspeaker (woofer) and two middle and high frequency loudspeakers (tweeters) and a stand supporting the main display body. The stand has a base being just opposite a... | 10/09/2007 |
| 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 |
| 7270215 | Loudspeaker enclosure with damping material laminated within internal shearing brace A loudspeaker cabinet with a laminated internal brace which has a first rigid layer coupled to a first exterior panel of the cabinet, a second rigid layer coupled to an a second exterior panel of the cabinet, and a damping layer affixed between the rigid layers wher... | 09/18/2007 |
| 7212644 | Resonant frequency adjustment using tunable damping rods A mechanical device is tuned using a tunable damping rod. The tunable damping rod can have its tension increased between its respective engines, to in order to increase the resonant frequency of the mechanical device. Different aspects may also be included; the mech... | 05/01/2007 |
| 7201252 | Loudspeaker systems A loudspeaker system includes a loudspeaker drive unit (1) and a rear sound absorption system (20) having a multiplicity of tubes connected to the rear of the loudspeaker drive unit. In one example, the rear sound absorption system (20) comprise... | 04/10/2007 |
| 7165647 | Mechanical acoustic filter by erosion etching A mechanical acoustic filter is formed of boards made by using erosion etching. The filter may be used in electric condenser microphones. The filter may be made of one or a plurality of boards each being made by erosion etching according to different requirements. T... | 01/23/2007 |
| 7156201 | Ultrasonic rod waveguide-radiator The present invention comprises an ultrasonic resonant rod waveguide-radiator with at least three cylindrical sections, one of which is an entrance section having a planar entrance surface and another of which is an exit section having a planar exit surface, and at ... | 01/02/2007 |
| 7142680 | Multiple waveguide coaxial ceiling loudspeaker A flush mountable ceiling speaker (10) with individual coaxial waveguides (20, 22) for both the lower and high-frequency transducers (11, 12). The lower frequency radiation is combined with the sonic energy radiated by the high-frequency transdu... | 11/28/2006 |
| 7130440 | Chair equipped with a speaker A chair equipped the a speaker is provided with a frame that forms the structural skeleton of the chair, and a speaker unit that is installed to the frame; and wherein hollow pipe is used for the frame, and furthermore wherein the frame functions as an acoustical re... | 10/31/2006 |
| 7116795 | Self-aligning self-sealing high-fidelity portable speaker and system In one embodiment, the present invention provides a portable speaker including a speaker driver, a first cylindrical ring coupled to the speaker driver, a base plate configured in parallel with the speaker driver, a second cylindrical ring affixed to the base plate,... | 10/03/2006 |
| 7111706 | Enclosure and audio-visual apparatus comprising same The acoustic enclosure comprises a box, on which is mounted at least one electro-acoustic transducer, and a vent which together with the box produces a bass-reflex system with a specified bass-reflex resonant frequency. The vent comprises means of attenuation at the... | 09/26/2006 |
| 7103193 | Bandpass woofer enclosure with multiple acoustic fibers A bandpass loudspeaker enclosure having three sub chambers, a first subchamber being a Helmholtz-reflex chamber with a passive acoustic radiator operating in parallel with the transducer, and the remaining two chambers utilizing two passive acoustic radiators to ach... | 09/05/2006 |
| 7099484 | Behind-the-ear hearing aid A behind-the-ear hearing aid is provided with an electric/acoustic transducer unit with a loud-speaker housing (53), in which there is a loud-speaker membrane 54. The housing (53) is spring-mounted in a capsule (59) in such a way that the... | 08/29/2006 |
| 7096048 | Portable communications device A portable communications device having a base that can be worn on the user's wrist, a wireless earpiece that can be concealed when worn, and a novel audio link that allows the earpiece to communicate with the base. Each audio link is programmed to communicate with ... | 08/22/2006 |
| 7073760 | Support structure for spa speakers A speaker rack for use with spas including a first and second member with the second member comprising generally extending members. The first member is coupled to the generally extending members of the second member. This first member allows for support, helps an in... | 07/11/2006 |
| 7072482 | Microphone with improved sound inlet port A microphone comprises a housing defining an inner volume and including a first exterior surface with an aperture leading to the inner volume. The microphone includes a transducing assembly within the housing for converting sound into an electrical signal. A sound i... | 07/04/2006 |
| 7044265 | Constant directivity acoustic horn An improved throat (2) for transmitting acoustic energy from a source driver unit (7) to a feeder section (3) of a directivity controlling acoustic horn is disclosed. The throat (2) comprises: a circular throat entrance (2i)... | 05/16/2006 |
| 7038356 | Mechanical-to-acoustical transformer and multi-media flat film speaker A mechanical-to-acoustical transducer has at least one actuator, preferably a piezo motor, that is coupled, generally perpendicularly, to one edge of a diaphragm formed from a thin, flexible sheet material. The diaphragm is fixed at a point spaced from the actuator ... | 05/02/2006 |
| 7039212 | Weather resistant porting A port for a loudspeaker is disclosed which is sufficiently weather resistant for long term outdoor use and which prevents debris, insects and other vermin from entering the loudspeaker and which is compact and efficient. ... | 05/02/2006 |
