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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 |
| 8170255 | Enclosure for acoustic insulation of an apparatus contained within said enclosure An enclosure with a substantial rectangular configuration, adapted to contain an apparatus sensitive to acoustic vibrations, the enclosure comprising walls and acoustic damping material located within the wall, wherein the acoustic damping material comprises at leas... | 05/01/2012 |
| 8094855 | Inverse horn loudspeakers In a low frequency transducer system a multi-compression chamber, inverse horn structure is employed in combination with a resonance-distortion filter chamber. The filter chamber effectively expands the effective enclosure volume at low frequencies and connected to ... | 01/10/2012 |
| 7899201 | Speaker with acoustic damped port Systems, methods, and devices for improving speaker performance with an acoustic damped port are disclosed. In accordance with various embodiments of the present invention, a damping material is placed around a vented frame of a speaker driver, and substantially cov... | 03/01/2011 |
| 7570776 | Speaker device and method of manufacturing the speaker device A speaker device has a connecting member on which a groove capable of accumulating a constant amount of adhesive is formed. The groove is in the vicinity of a lower end of an outer peripheral wall of a cylindrical portion, and is formed on the outer peripheral wall ... | 08/04/2009 |
| 7440580 | Room mode bass absorption through combined diaphragmatic and helmholtz resonance techniques An acoustical bass absorber which reduces peak and dip frequency response errors caused by interference from naturally occurring axial standing waves in rectangular rooms. The apparatus uses two forms of simple harmonic resonance: pistonic diaphragm resonance and He... | 10/21/2008 |
| 7353907 | Speaker enclosure for a wall mounted speaker system A process and kit is provided for retro-installing a speaker enclosure for a wall mounted speaker. The process includes mounting a selected speaker surround member in a building wall between the front and back wall surfaces and between the wall studs and around the ... | 04/08/2008 |
| 7350618 | Multimedia speaker product A satellite speaker system includes a side firing low mid driver mounted in a sub-enclosure which is vented into a second sub-enclosure through an acoustic resistance vent and to a third sub-enclosure through a variable aperture second vent. The vents further serve ... | 04/01/2008 |
| 7325648 | Frame for speaker device and speaker device A frame for a speaker device has an annular outer peripheral portion. The outer peripheral portion includes plural wall portions concentrically formed. An end surface of the wall portion on an inner circumferential side of the outer peripheral portion is formed at a... | 02/05/2008 |
| 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 |
| 7305098 | Hearing device A hearing device has an electrical/acoustical output converter that communicates with ambient air through a membrane. The membrane separates two spaces. Each space communicates with ambient air through a passage that substantially blocks acoustical signals in the ra... | 12/04/2007 |
| 7302075 | Electronic device with loudspeaker An electronic device such as a TV set has a casing (11), a loudspeaker unit (18, 24), a first surface (21) of which faces a wall (11) of the casing. Retaining means (17) are formed in the casing so as to face a second surface (2... | 11/27/2007 |
| 7284637 | Low-frequency sound reproducing speaker apparatus In a low-frequency sound reproducing speaker apparatus of Kelton type, a cabinet for containing a speaker unit is constituted by a shape of substantially a parallelepiped slender in a front and rear direction, a length dimension in the front and rear direction is se... | 10/23/2007 |
| 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 |
| 7269270 | Standing wave reducing The frequency at which standing waves occur in a loudspeaker enclosure may be reduced by the addition of an internal barrier to the enclosure in order to lengthen the effective length of an internal dimension of the enclosure. Additionally, the internal barrier may ... | 09/11/2007 |
| 7263387 | Speaker module design A speaker module (200) having a speaker unit (210) and a speaker box (220) is provided. The speaker module is mounted in a casing (22) of a hand-held electronic device (20). The speaker box (220) has a wall defining an apert... | 08/28/2007 |
| 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 |
| 7206428 | Acoustic receiver having improved mechanical suspension The present invention is a receiver that includes electronics for converting an input audio signal to an output acoustic signal. The receiver has a housing for containing at least a portion of the electronics. The housing includes a port for broadcasting the output ... | 04/17/2007 |
| 7194287 | Electric-mechanical-acoustic-transducer and portable communication device including the same An electric-mechanical-acoustic-transducer includes a diaphragm; a movable section; a driving section for generating a driving force for vibrating the diaphragm and the movable section; and a suppression section for suppressing a sharpness (Q factor) of a vibration ... | 03/20/2007 |
| 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 |
| 7130441 | Speaker system having processing circuitry A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects from the front side of the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. Even if reactive force that is generated... | 10/31/2006 |
| 7130432 | Speaker mounting system and method A system and a method for mounting a speaker unit (12). The system (12) containing a surface mounting bracket (14) including at least one attaching feature (20) and a speaker unit (12). The speaker unit (12) comprises at lea... | 10/31/2006 |
| 7123736 | Double-resonator micro-speaker assemblies and methods for tuning the same Micro-speaker assemblies and mobile terminals including micro-speaker assemblies are provided. The micro-speaker assemblies include a micro-speaker positioned in a housing. A first forward tuning volume is positioned adjacent a front face of the micro-speaker. A pas... | 10/17/2006 |
| RE39330 | Speaker system and a method for improving sound quality thereof A speaker system suppresses standing waves generated in the system and reproduces clear and dynamic bass sound. The system includes a cabinet formed of acoustic insulation walls, and at least one partition wall situated inside the cabinet to form a space by surround... | 10/10/2006 |
| 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 |
| 7088839 | Acoustic receiver having improved mechanical suspension The present invention is a receiver that includes electronics for converting an input audio signal to an output acoustic signal. The receiver has a housing for containing at least a portion of the electronics. The housing includes a port for broadcasting the output ... | 08/08/2006 |
| 7082208 | Speaker assembly having plural drivers A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects to the front side from the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. Even if reactive force that is generated... | 07/25/2006 |
| 7073624 | Loudspeaker baffle isolation system This invention provides a baffle isolation system for isolating a baffle from a housing in a loudspeaker mounting system. The isolation system may include an isolation mechanism that insulates the baffle from the speaker housing. The isolation mechanism may include ... | 07/11/2006 |
| 7068979 | Mobile telecommunications device A mobile telecommunications device is disclosed and comprises a casing (2), an earpiece (6), and a cover (33) associated with the earpiece (6) to define a resonant cavity (34) between the earpiece (6) and the casing (2 | 06/27/2006 |
| 7035419 | Anti-resonant structure for speakers An anti-resonant structure for speakers includes a resonant structure which has a housing compartment, at least one elastic element located in the housing compartment that has one end fastening to the resonant structure and another end coupling with a speaker, and a... | 04/25/2006 |
| 7034218 | Point source contact transducer A transducer for use with a musical instrument to transmit vibrations from the instrument to an amplifier has a weight, at least one sensor connected to the weight, an insulating layer covering the weight and the sensor, a substrate layer covering the insulating lay... | 04/25/2006 |
| 7016155 | Vibration-canceling mechanism and head gimbal assembly with the vibration-canceling mechanism A vibration-canceling mechanism includes a vibration transfer member of a plane shape inserted between a vibration-origination system having at least one resonance frequency and an object to which a vibration is applied from the vibration-origination system. The vib... | 03/21/2006 |
| 7013019 | Thermoset composite material baffle for loudspeaker This invention provides a baffle formed from a thermoset composite material such as Bulk Molding Compound (BMC), Thick Molding Compound (TMC), or Sheet Molding Compound (SMC). Due to the physical properties of BMCs, TMCs, and SMCs, the baffle may be molded to minimi... | 03/14/2006 |
| 6914993 | Piezoelectric film loudspeaker A piezoelectric film loudspeaker comprising a diaphragm having a flexible piezoelectric film and electrodes formed on the both surfaces of the flexible piezoelectric film and a frame for supporting a side of the diaphragm, wherein said respective electrodes disposed... | 07/05/2005 |
| 6870941 | Dipole radiating dynamic speaker A dipole radiating dynamic speaker design comprises a diaphragm (32) providing a surface for radiating acoustic output, a voice coil assembly (36) for driving the diaphragm, and a magnet system for providing magnetic flux across the voice coil assembly... | 03/22/2005 |
| 6788796 | Differential microphone A new acoustic sensing device or directional microphone having greater sensitivity and reduced noise. The directional microphone or acoustic sensor has a rigid, one micron thick, polysilicon membrane having dimensions of about 1 mm×2 mm. The membrane is supported u... | 09/07/2004 |
| 6782112 | Low frequency transducer enclosure An acoustical transducer enclosure has an acoustic lever acoustically coupled to an electro-acoustical transducer so as to force all radiated sound through the lever. ... | 08/24/2004 |
| 6751330 | Speaker system A driver unit is fixed to a stand. A front box and a rear box are directly fitted to the stand through a buffer material. A box comes into contact with the driver unit through a buffer material and is fixed to the stand. Therefore, sound of the driver unit is not tr... | 06/15/2004 |
| 6751329 | Loudspeaker driver A drive module for attachment to a rigid panel and adapted to apply bending wave energy at audio frequencies to the panel whereby the panel can radiate an audio output. The drive module has a housing adapted to be secured to the panel, at least one foot on the housi... | 06/15/2004 |
