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8434586 Sound insulation in a refrigerant circuit  
A muffler device for a refrigerant circuit with refrigerant containing refrigerant oil comprises a housing in which an upper muffler chamber and a lower muffler chamber are arranged, whereby the...
8434493 Adjustable mouth shield device  
The adjustable mouth shield device provides an adjustably fitted mouth shield with adjustable headband for secure fit. The adjustable headband is fastened to the padded earpiece. The straight first...
8430200 Speaker apparatus  
A speaker apparatus according to the present invention includes a phase inversion-type enclosure in which a speaker unit and a bass reflex port are installed, the bass reflex port having a tubular...
8430202 Compact high-pressure exhaust muffling devices  
Compact, high-pressure exhaust muffling devices are disclosed. Some example muffling devices may include an inner flow conditioner including an inlet configured to convey a pressurized fluid flow...
8430203 Noise reduction device for turbojet nacelle with mobile chevrons, and associated nacelle  
The invention relates to a turbojet nacelle (1) and to an aeroacoustic noise reduction device for said nacelle, the nacelle comprising a nozzle (10) on the downstream end thereof, said nozzle (10)...
8430201 Speaker enclosure  
The present invention relates to speaker enclosures utilizing the golden ratio geometrically throughout the design to reduce reflections, resonance and phase shifting, and to improve the transient...
8430198 Muffler mounting structure of vehicle and straddle-type four-wheeled vehicle provided with the same  
A muffler mounting structure of a vehicle, particularly a straddle-type four-wheeled vehicle. The muffler mounting structure is provided with a muffler, at least one muffler mounting portion...
8430199 Sound shell  
A performance shell (1) for outdoor music performance including a platform (2) providing a performance area for receiving at least one sound source, the platform combining unitarily with a rear...
8428291 Speaker system with subwoofer  
A speaker system includes an enclosure defining a resonance chamber, a loudspeaker received in the resonance chamber, and a sound wave reflecting member. The enclosure includes a front panel and a...
8428290 Input-panel-equipped portable speaker device  
An input-panel-equipped portable speaker device includes a cabinet shell body configured to enclose an accommodation chamber in a longitudinal direction, and having left and right mounting walls...
8424636 Muffler assembly and process of manufacture  
A muffler assembly including one or more exhaust pipe(s), a polymeric housing carried by at least one of the exhaust pipe(s); a thermal insulating layer lining the housing interior surface and...
8424634 Hearing assistance device  
A device structured to assist the hearing of a user by being removably connected to and disposing a user's ear in an enhanced hearing orientation. One embodiment includes an elongated base, which...
8428284 Loudspeaker with passive low frequency directional control  
A loudspeaker is provided that passively achieves a directional polar response at low frequencies with a high degree of attenuation between the front and the back of the loudspeaker. The...
8424251 Sound Proofing material with improved damping and structural integrity  
Panels for use in building construction (partitions, walls, ceilings, floors or doors) which exhibit improved acoustical sound proofing in multiple specific frequency ranges and also present...
8425749 Microfabricated particle focusing device  
A microfabricated particle focusing device comprises an acoustic portion to preconcentrate particles over large spatial dimensions into particle streams and a dielectrophoretic portion for finer...
8424635 Firearm suppressor with relationally-rotated spacers disposed between baffles  
A firearm suppressor includes an outer housing and a baffle stack mounted inside the outer housing. The baffle stack includes baffles and spacers. The baffles and spacers are configured to allow a...
8428289 Headphone adaptation and positioning device  
An adaptation device that removably attaches to earbud style headphone/s and provides improved security and retention of the earbud to a wearer's ear yet positions the speaker in substantially the...
8427901 Combined impulsive and non-impulsive seismic sources  
A method for seismic exploration of subsurface rock formations includes actuating an impulsive seismic energy source proximate the rock formations. A non-impulsive seismic energy source is...
8424637 Systems and methods for providing an asymmetric cellular acoustic diffuser  
The present invention relates to providing an acoustic diffuser. In particular, the present invention relates to systems and methods for providing an asymmetric cellular acoustic diffuser adapted...
8425710 Automated placement of vibration damping materials  
Damping material is installed on a structure by moving a material placement head over the structure, and using the head to place the material on the structure.
8424441 Firearm suppressor booster system  
A booster system including a piston housing, a piston, a spring, and a rear cap attached to the piston housing. The piston housing includes an annular outer wall and an annular projection extending...
8428298 Damper for speaker and speaker using the damper  
A speaker has high sound quality by reducing resonance of curved parts in a speaker damper without decreasing sound pressure and by providing high linearity characteristic. In a damper for a...
8418806 Sound attenuating device using an embedded layer for acoustical tuning  
The present invention includes a layered acoustical system for sound attenuation in a vehicle including an external decorative layer; a moldable fiber backer adhesively adhered to a back side of...
8418803 Flash suppressor  
A muzzle device for use on a firearm to reduce noise signature and muzzle flash includes a cylindrical housing. The cylindrical housing defines a first chamber and a second chamber with a...
8422714 Speaker with acoustic chamber  
A speaker with acoustic chamber is provided. The speaker includes a main body and an acoustic chamber fixed to the main body. The acoustic chamber can be converted between a collapsed state and an...
8422713 Spherically housed loudspeaker system  
A loudspeaker system for the reproduction of acoustic waves of music, sound and speech in a substantially circular horizontal plane. The loudspeaker system includes multiple spherical enclosures,...
8418807 Noise abatement wall and a noise abatement wall system  
A noise abatement wall includes a frame defining a window, at least one shell, at least one sheet of sound-insulating material and a sheet of screen material. The at least one shell has a base...
8422225 Power electronic apparatuses with cooling arrangements  
A power electronic device with cooling arrangement includes a housing that accommodates power electronic components. At least two adjacent axial fans are connected to the housing for inducing an...
8418804 Multiple Helmholtz resonators  
Multiple Helmholtz resonators are combined serially and dynamically to mitigate and/or overcome acoustic noise filtering problems. One Helmholtz resonator is attached to a duct having an acoustic...
8422717 Adjustable audio headphone  
Provided is an adjustable audio headphone, including a headphone body, a damping object and a pressing mechanism. The headphone body includes a headphone shell, which forms a sound cavity in inside...
8418802 Phase plug and acoustic lens for direct radiating loudspeaker  
A phase plugs or acoustic lens improves the directional audio performance of a loudspeaker. Application of the improved directional audio performance to a sound system in a listening area may...
8418445 Exhaust system for an internal combustion engine  
An exhaust system for an internal combustion engine, having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and having a second exhaust tract...
8418805 Muffler for vehicle  
A muffler for a vehicle includes an inner casing, the inner space of the inner casing is divided by baffles to form a plurality of chambers, the inner casing having an entrance defined in one end...
8413922 Acoustic processing structure particularly adapted to the air inlet of an aircraft nacelle  
An acoustic treatment structure related to a leading edge onto which an aerodynamic stream flows, in particular at an air intake of an aircraft nacelle, includes—from the outside to the i...
8416974 Hearing aid with connecting element serving for retention in concha  
A hearing aid device has a shell that fits into the upper part of the concha of the outer ear of a hearing-impaired person, and connecting element that is held in the concha of the outer ear and...
8413762 Thermal-acoustic sections for an aircraft  
Embodiments of thermal-acoustic sections for an aircraft for reducing noise along an acoustic path produced from an acoustic source are provided herein. The thermal-acoustic section comprises a...
8413430 Metering module with improved acoustic properties  
The invention relates to a device for metering a liquid reducing agent into an exhaust gas system for the reduction of pollutants in the exhaust gas. The device comprises a metering valve and an...
8413760 Muffler attachment system  
A muffler for an internal combustion engine includes a first shell includes a flexible portion, an intake conduit, and a second shell coupled to the first shell. The intake conduit extends...
8413663 Push-in type of earplug with improved insertion stem  
A hearing protective earplug for insertion into the human ear canal of a user where the human ear canal has sidewalls and a typical curved portion. A soft resilient body has a main body element...
8413443 Flow control through a resonator system of gas turbine combustor  
A resonator system for a turbine engine can improve acoustic performance and cooling effectiveness. During engine operation, a combustor liner exhibits alternating hot and cold regions in the...
8413761 Acoustic honeycomb with perforated septum caps  
An acoustic structure that includes a honeycomb having cells in which septum caps are located. The septum caps are formed from sheets of flexible material that may be perforated before or after the...
8408358 Morphing resonators for adaptive noise reduction  
Tunable perforate acoustic liners are disclosed using shape memory materials, which allow the acoustic liners to tune for multiple frequencies across a wide range, unlike current designs which are...
8408359 Acoustic attenuation method based on acoustic ray deflection theory and a muffler  
The present invention provides an acoustic attenuation based on sound ray deflection theory and a muffler. The method of the present invention provides a temperature gradient between the interior...
8411893 Headphone  
There is provided a headphone including: a housing that accommodates a driver unit; a sound guiding tube that protrudes from the housing in a predetermined direction and guides a sound generated...
8408355 Enclosures for containing transducers and electronics on a downhole tool  
A downhole tool for subsurface disposal is provided. The tool comprises an elongated tool body, an enclosure attached to an exterior surface of the tool body. The enclosure comprises at least one...
8408356 Storage box for electronic apparatus  
A box-shaped enclosure of a storage box includes a deadening wall or walls defining a storage space between first and second planes. The storage space is open at the first and second planes. A...
8408357 Air duct attenuator  
An attenuator for the air inlet tract of an internal combustion engine comprises an unobstructed tube (4) having a surrounding enclosure (9) divided into a primary chamber (11) in fluid...
8402737 Inlet system for an EGR system  
An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter...
8403108 Acoustically tunable sound absorption articles and methods of making same  
A moldable acoustic facing comprises cellulosic fibers and synthetic fibers entangled together. The acoustic facing has a basis weight of from about 1.5 to about 5.0 ounces per square yard (osy), a...
8406438 Device and method for the excitation and/or damping and/or detection or structural oscillations of a plate-shaped device using a piezoelectric strip device  
An apparatus and a method for the excitation and/or damping and/or detection of structural oscillations of a plate-shaped device by means of a piezoelectric strip device are described. The...