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8492957 Apparatus for generating electric energy  
An apparatus for generating electric energy comprises a vibration plate, a supporting board, at least one side-wall unit and at least one piezoelectric substrate having a first- and a second end...
8490743 Perforation acoustic muffler assembly and method of reducing noise transmission through objects  
A noise attenuation system is disclosed for use in a structure having a recessed fixture mounted therein or other unit which creates a hole in the structure in which it is secured, such as a...
8490535 Flash and sound suppressor for a firearm  
A flash hider, a sound suppressor and a quick-disconnect coupler that holds the sound suppressor to a flash hider is disclosed. The quick-disconnect coupler enables the suppressor to be attached to...
8490744 Combustor and gas turbine having the same  
An object is to provide a combustor that requires a small mounting space for an acoustic damper, that can achieve size reduction, and that can improve the ease of maintenance. A combustor (5) of...
8490534 Flash hider  
A flash hider has a central bore for receiving the barrel of a firearm at one end and three tapered tines at the opposing end with a gap formed between each pair of adjacent tines. Just past the...
8485309 Apparatus and method for improving the damping of acoustic waves  
An apparatus for damping acoustic waves that includes a volume of fluid having actively excited acoustic waves, an enclosure disposed in the volume of fluid including delimiting surfaces which...
8485153 Air intake apparatus  
The present invention relates to an air intake duct for an internal combustion engine that is capable of reducing the noise associated with the induction of air. The air intake duct includes an...
8485082 Firearm barrel  
A firearm barrel that reduces muzzle climb and recoil by tapping a portion of the discharge products near the breech and venting them toward the muzzle end of a firearm. Some discharge products...
8485314 Exhaust muffler  
An exhaust muffler of an internal combustion engine has pipe sections on the inflow side and on the outflow side, respectively, and a muffler housing that is in communication with the pipe...
8485310 Silencing equipment for electric devices  
Silencing equipment provided with one or more flow channels through which cooling air flows has a flow channel forming member that forms the flow channel, and an acoustic absorbent member that is...
8485311 Air duct assembly for engine  
An air duct assembly supplies air from an air cleaner housing to an engine throttle and includes a first duct connected to the air cleaner housing and a second duct connected to the engine air...
8488807 Audio signal compensation device and audio signal compensation method  
An audio signal compensation device includes: a signal processor configured to perform filtering on an input audio signal; a filter coefficients storage module configured to store a plurality of...
8485313 Muffler and engine system  
A muffler for a combustion engine includes walls forming a chamber, a first inlet, a first outlet, and a conduit. The first inlet is designed to receive exhaust gases from an exhaust duct of the...
8485315 Acoustic energy reflector  
The present invention relates to an acoustic energy reflector comprising a microcellular rubber as inner liner and a fiber reinforced composite as outer casing, in a core-shell assembly, wherein...
8485312 Exhaust pipe  
An exhaust pipe including an inner tube for introducing exhaust gas, and an outer tube fitted on the inner tube. Projected portions obtained by radially inwardly projecting plural parts of the...
8488826 Horn enclosure for combining sound output  
A horn enclosure combines sound output emanating from a plurality of acoustic drivers. The horn enclosure includes a plurality of sound input plenums, a plurality of flow passageways, and a common...
8483421 Narrow-angle directional microphone  
A narrow-angle directional microphone having an acoustic tube, accommodated in a cylindrical microphone case, in a circumferential wall of which an opening is formed to be covered with an acoustic...
8479877 Gas-turbine exhaust cone with three-dimensionally profiled partition wall and plate-type wall element  
A gas-turbine exhaust cone has an outer wall with a plurality of recesses, a honeycomb-structured layer arranged at the inside of the outer wall and extending along said inside of the outer wall,...
8483776 Acoustic path for a wireless communications device  
A printed circuit board for a wireless communications device includes an acoustic path, and acoustically couples microphone circuitry mounted to a surface of the printed circuit board to an...
8479880 Multifunctional nano-skin articles and methods  
Methods for vibration and acoustic abatement. The methods comprise providing a substrate with a composite layer deposited thereon, the substrate receiving a vibration energy sufficient to provide...
8479876 Sound damping patch  
A panel assembly for use in any number of different applications, including a variety of vehicle applications, that reduces noise or vibrations, provides thermal insulation, and/or improves...
8479632 Firearm silencer and methods for manufacturing and fastening a silencer onto a firearm  
A firearm suppressor includes a hollow outer can having an interior-threaded proximal end and a radially closed distal end with a bore, a barrel nut having a barrel bore and an outer-threaded...
8479878 Channeling gas flow tube  
A tube for moving gas between an entry end into which gas is introduced and an exit end through which gas exits the tube, the tube comprising a plurality of adjoining adjacentâ–¡ guides, each guide c...
8479874 Acoustic enclosure for loudspeakers  
Acoustic enclosure for mounting loudspeakers (1) that contains a certain number of curved-profile guides (8) arranged radially beside one another at a specific distance and forming a ring (7),...
8479875 Acoustic isolation mechanism  
A rigid removable case for a portable electronic device may have an acoustic isolation mechanism between the rigid removable case and an acoustic component on the electronic device. The acoustic...
8479879 Expandable chamber acoustic silencer  
The expandable chamber acoustic silencer may be installed at the inlet or outlet of virtually any mechanism that processes air or other gas flow therethrough, to reduce the audible output of the...
8479873 Loudspeaker  
A loudspeaker comprising a horn waveguide having a throat and a waveguide surface; an acoustic radiator assembly, located at the throat of the waveguide, comprising a diaphragm having a rigid...
8479872 Ring shaped membrane for an electro-acoustical loudspeaker  
Ring-shaped membrane for an electro-acoustical loudspeaker, where said membrane comprises two or more dome-shaped annulus concentrically arranged around a central portion through which an imaginary...
8479871 Ceiling speaker assembly  
A ceiling speaker assembly is disclosed. In one or more embodiments, the ceiling speaker assembly includes a three-dimensional support frame attached to a perforated grille. The support frame is...
8474574 Sound absorbing structure  
PROBLEMS The present invention provides a sound absorbing structure that enables a sound absorbing rate thereof to be raised in a low-frequency region or medium-high frequency from around 500 Hz to...
8474198 Sound insulating glazing device, in particular for aircraft and soundproofing method for glazing  
Sound insulating glazing device for aircrafts, ground or maritime transportation vehicles, buildings, or others, including glazing, a sealing joint in a shape and size corresponding to the edge of...
8477039 Providing information related to the posture mode of a user applying pressure to a seat component  
A system for producing information about the posture of a user applying pressure to a seat component is provided. A sensor structure with array of sensors is connected with the seat component, with...
8477967 Acoustic reflector and energy storage for media assemblies  
A speaker assembly is provided with a housing, a speaker mounted to the housing, and a reflector spaced apart from and facing the speaker. The reflector is symmetrical and has an arcuate central...
8474250 Device and method for the reduction of emissions  
An emission reduction device which may be removably affixed to an engine's exhaust system. The device comprises a cylindrical carcass with a beveled opening in a diagonal line in its proximal part....
8477985 Customized earphone  
An earphone and method for forming the same are provided. The earphone includes an earphone housing, a speaker, and an earcap. The earphone housing includes a speaker mounting portion. The speaker...
8474573 Reinforced composite sandwich panel  
The invention relates to a composite sandwich panel (1) comprising at least a web (2) provided between an inner skin (3) and an outer skin (4), each skin being made of a composite material from a...
8474571 Limited movement ear piece for stethoscopes and other headpieces  
An ear piece assembly (10, 100, 200, 300, 500, 600, 700, 800, 900, 1000) designed for a stethoscope or other headpiece, and configured to allow rotation of an ear tip (20, 120, 220, 320, 420, 520,...
8477978 Open fit canal hearing device  
An improved hearing aid device adapted for use within the ear canal of the CIC (Completely In the ear) and of the partially exposed ITC (In The Canal) type. This aid consists of a system of...
8474417 Lubricating system for air-cooled general-purpose engine  
An air-cooled general-purpose engine includes: a cooling fan fixed to one end portion, protruding outward from one end wall of an engine main body, of a crankshaft; and a shroud which is mounted to...
8474572 Apparatus and method to attenuate vibration and acoustic noise  
An apparatus and method to attenuate vibration and acoustic noise are provided. One apparatus includes a first layer formed from a non-metal material having a predetermined level of resistance to...
8469146 Panel for acoustic treatment comprising a junction between two parts and process for the reparation of a panel for acoustic treatment  
An acoustic treatment panel includes two portions with edges spaced in one direction, and from the outside to the inside, a first acoustically resistive layer, a first alveolar structure, and a...
8468813 Snap-action valve for exhaust system  
A muffler for an internal combustion engine exhaust system includes a housing having an inlet and outlet headers enclosing opposite ends of an outer shell. A partition divides a housing interior...
8468825 Method for producing shaft horsepower using waste heat  
One or more methods for generating electricity using waste heat are provided herein. The method can include providing an exhaust gas to a first silencing chamber within an inner housing of a heat...
8469144 Inflatable sound attenuation system  
An inflatable, noise attenuating panel or barrier, comprised of an inflatable air chamber coated with (wrapped in or attached thereto) an acoustic barrier material, with which to construct a...
8469142 Muffler assembly  
The invention provides a muffler assembly (10) for exhaust gas flow communication with an engine exhaust. The assembly (10) includes a muffler (12) having inlet and outlet ports (14, 16). The...
8470921 Ultra-low permeability polymeric encapsulated acoustic device and method  
This invention is an acoustic device protected by an acoustically transparent low water permeability encapsulant made from an acoustically clear polymer such as polyurethane. High aspect ratio clay...
8469141 Acoustic damping device for use in gas turbine engine  
An acoustic dampener comprises a first wall, orifice plate, and second wall. The first wall separates a first fluid source from a second fluid source. The first wall has a hole for allowing fluid...
8469140 Radial waveguide for double cone transducers  
A radial waveguide assembly comprises a transducer section and a waveguide section. The transducer section includes first and second cone loudspeakers arranged coaxially and in an opposed...
8469143 Baffle with enhanced acoustic damping properties  
An insert for sealing and acoustic damping of a longitudinal cavity having an interior surface, comprising: a) one or more carrier plates made of a polymeric material (A) which does not deform when...
8472660 Headphone adaptation and positioning device with means for holding an earbud stem  
An adaptation device that removably attaches to earbud style headphone/s and provides security and retention of the earbud to a wearer's ear.