| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 181286000 | Specific acoustical properties or dimensions | 62 |
| 20080223653 | Poroelastic acoustical foam having enhanced sound-absorbing performance - An optimal shape of a poroelastic acoustical foam which can maximize sound-absorbing effect is disclosed. The poroelastic acoustical foam is made of a wedge-shaped wedge unit where the cross section is reduced in one direction, and a bowl-shaped bowl unit where formed at one end of the wedge unit where the cross section of the wedge unit is small, and the other end, where the cross section of the wedge unit is large, is separated from the wall, forming an air layer. | 09-18-2008 |
| 20080223654 | LOW MASS ACOUSTICALLY ENHANCED FLOOR CARPET SYSTEM - A low mass acoustically enhanced floor carpet system for vehicles. In a first embodiment, the carpet assembly comprising a face layer and an opposite lower fiber mat. The carpet assembly further including a primary backing if the face layer is tufted, a back coating layer, an upper fiber mat, and a perforated film layer all in between the face layer and the lower fiber mat. The perforated film layer providing for enhanced sound absorption. In an alternate embodiment, the carpet assembly comprising a face layer, an insulator pad opposite the face layer; a back coating, a perforated film layer, and an insulator pad all between the face layer and the insulator pad. | 09-18-2008 |
| 20080230309 | Multilayer Articles Having Acoustical Absorbance Properties and Methods of Making and Using the Same - Multilayer articles having acoustical absorbance properties are disclosed. Methods of making and using the multilayer articles are also disclosed. | 09-25-2008 |
| 20080245608 | Element For Sound Insulation - An element for sound insulation which forms the external completion of a housing-like structure excited to oscillations, in which there is located at least one sound emitter, which element is formed of a shaped thermoplastic material, which is reinforced by a glass fiber component of more than 35 weight percent based on the total weight of the thermoplastic material and the glass fibers component. | 10-09-2008 |
| 20080257641 | Sealed Thin-Multi-Layer Sound Absorber - The invention relates to a thin sound absorbing multi-layer assembly, which is intended, in particular, to reduce interior or exterior noise of a motor vehicle. The assembly according to the invention comprises at least three stacked layers consisting respectively of: a first layer ( | 10-23-2008 |
| 20080264720 | Sound Absorbent - Sound absorbent ( | 10-30-2008 |
| 20080289901 | ACOUSTIC PANEL - An acoustic panel is provided with a plurality of grooves in a front face and at least one well in a back face. The well is defined by a first end wall and an opposing second end wall and opposing side walls extending between the end walls. The grooves and the well intersect and have a sufficient combined depth to form a plurality of holes through the panel. The grooves may extend substantially from one end edge to the opposing end edge. The well may be substantially elongate and extend from a position adjacent to, and spaced from one side edge of the panel to a position adjacent to, and spaced from the opposite side edge of the panel. The well may include a substantially flat bottom and receive an acoustic fill material that may be held in place by compression and friction. | 11-27-2008 |
| 20090000864 | ARCHITECTURAL ACOUSTIC DEVICE - An acoustic device and a method for altering sound. The acoustic device includes an architectural structure having a solid body. The architectural structure is adapted to be mounted on a wall of a room. The solid body has a channel therethrough to define a cavity therein. The channel is configured to alter sound waves incident on the acoustic device. | 01-01-2009 |
| 20090038881 | SOUND-ABSORBING MATERIAL, PRODUCTION METHOD FOR SOUND-ABSORBING MATERIAL, AND SOUND-ABSORBING STRUCTURE - Disclosed is a sound-absorbing material, which has a flow resistivity R of 3.3×10 | 02-12-2009 |
| 20090045008 | Acrylate-based sound damping material and method of preparing same - A sound damping material for use in a sound damping laminate having one or more rigid layers, such as those used in the automotive industry. The sound damping material is preferably a viscoelastic material that damps or otherwise inhibits the transmission of vibrational or acoustical energy through the laminate, and also acts as an adhesive for bonding the rigid layers together. In its cured form, the sound damping material layer can include an acrylate-based polymer matrix, and one or more of the following components: a precipitated phase, a viscous phase, and miscellaneous constituents. The acrylate-based polymer matrix is the reaction product of at least one acrylate-based monomer, such as isobornyl acrylate. | 02-19-2009 |
| 20090173569 | ACOUSTIC ABSORBER WITH BARRIER FACING - An acoustic absorber includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The use of the facing improves the acoustic absorption of ambient sound at a frequency below about | 07-09-2009 |
| 20090173570 | ACOUSTICALLY ABSORBENT CEILING TILE HAVING BARRIER FACING WITH DIFFUSE REFLECTANCE - An acoustically absorbent ceiling tile includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The facing has highly diffuse reflectance of light, and a reflectance of greater than about 86%. The use of the facing improves the acoustic absorption of ambient sound at frequencies below about 1200 Hz. The facing provides a barrier to moisture and particles including microorganisms so that the ceiling tile is suitable for use in environments in which cleanliness is critical. | 07-09-2009 |
| 20090277715 | Furniture system for influencing the acoustics of a room - A furniture system for influencing the acoustics of a room comprises at least one item of furniture ( | 11-12-2009 |
| 20090283359 | WALL AND CEILING SOUND DAMPING MOUNTS AND CHANNELS - A sound damping device includes an attachment portion, an engagement structure to engage a furring channel, and a shoulder disposed between the attachment portion and the engagement structure. The sound damping device has a spring rate of not greater than 12,000 kg/m. The sound damping device may be disposed between a support structure and a sheet material. | 11-19-2009 |
| 20100065366 | LIGHTWEIGHT, SOUND-INSULATING LINING FOR A BODY PART OF A MOTOR VEHICLE, AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a lightweight sound insulating lining ( | 03-18-2010 |
| 20100089691 | SOUND ABSORBING STRUCTURE BUILT INTO LUGGAGE COMPARTMENT OF VEHICLE - A sound absorbing structure is constituted of a vibration plate and a rear air layer and is installed in a luggage compartment or trunk which is separated from a cabin in a vehicle. Sound waves entering into the luggage compartment drive the vibration plate to vibrate so that acoustic energy is converted into mechanical energy and is consumed by way of vibration of the vibration plate. By appropriately setting parameters and dimensions, the sound absorbing structure efficiently absorbs low-frequency sound such as road noise occurring due to friction of wheels of the vehicle traveling on a road. | 04-15-2010 |
| 20100108437 | ACOUSTIC PROTECTIVE PANEL FOR VEHICLE COMPRISING AN IMPREGNATED SEALING LAYER - An acoustic protective panel for the fitting of a wall of a vehicle, has an upper porous layer, in particular with a felt or remelted flexible foam base, at least one zone of the porous layer being arranged on one sealing layer, the sealing layer being arranged on one backing layer ( | 05-06-2010 |
| 20100126800 | Transfer-Coated Acoustic Tuning Layer - A method of making a sound insulating layered composite structure by roll coating a padding layer with an emulsion which may then be solidified to form a layer disposed over at least a portion of the padding layer. The emulsion may be applied using various devices and applied at thicknesses as to provide the capability to tune the acoustic performance of the composite. | 05-27-2010 |
| 20100175949 | Porous sound absorbing structure - A porous sound absorbing structure | 07-15-2010 |
| 20100213001 | Damping Device and Method for Damping Sound in Cavities of Vehicles - A damping device and a method of damping a structural element of a vehicle body are disclosed. The damping device generally includes a carrier material, a separating material, and a damping material disposed on the carrier material. The damping material is one of a material forming an open cell structure and a material having an absorption coefficient for sound waves greater than about 0.5. The method generally includes fixing a damping device on a structural element of a vehicle, the damping device including a carrier material, a separating material, and a damping material, and one of expanding and dilating at least one of the separating material and the damping material, the damping material having one of an open cell structure and an absorption coefficient for sound waves greater than 0.5 after expansion. | 08-26-2010 |
| 20100230206 | ACOUSTICAL SOUND PROOFING MATERIAL WITH IMPROVED DAMPING AT SELECT FREQUENCIES AND METHODS FOR MANUFACTURING SAME - A laminated panel is provided including a first layer of material having external and internal surfaces; a second layer of material having external and internal surfaces; a layer of viscoelastic glue in contact with the internal surface of said first layer of material and with the internal surface of said second layer of material; said glue including an acrylic polymer in a concentration between 10% and 60% by weight, or a tackifier in a concentration between 1% and 70%; or a plasticizing compound in a concentration between 0% and 15%; or a material with T | 09-16-2010 |
| 20100258378 | ACOUSTIC DAMPING COMPOSITIONS - An acoustic damping composition includes a binder resin including an addition polymer having a carboxylic functional group and a urethane component. The acoustic damping composition has a Mode 1 Damping Parameter of at least 0.45. | 10-14-2010 |
| 20100288582 | THERMALLY AND ACOUSTICALLY INSULATIVE VEHICLE FLOORING SYSTEM - A vehicle flooring system with improved thermal and acoustic properties is provided that does not unreasonably increase the thickness and weight of the flooring system and does not break down due to repeated exposure to high temperatures and wide ranging temperature fluctuations. Various materials and construction methods are combined to provide a system with optimized thermal conductivity, having varied density ratios of materials to meet particular sound transmission loss profiles. These materials include a wide range of foam and other materials. | 11-18-2010 |
| 20100307866 | SOUND ABSORBER - To provide an inexpensive, slender sound absorber, it has a plurality of porous layers or regions of different densities and different flow resistances respectively. Of significance are the boundary surfaces between the different, porous layers which are accompanied by changes in impedance. Homogenized and adapted flow resistance conditions should be avoided. Although the thermal frictional effect in the porous material is desired, in particular to absorb higher frequencies, according to the present invention it only forms one element of the absorptive working mechanism. In addition, the effect known in physics as refraction is used. At the boundary layer between two materials of different density and different flow resistance respectively there is an abrupt change in impedance. This leads to a phase shift of the sound wave, and so a sound absorbing effect is made possible. In contrast to exclusively porous absorber layers with homogeneously or steadily increasing flow resistances, frequently changing transitions and porous materials having different, respectively suitable, direct impedances allow much higher degrees of sound absorption to be achieved in the range of low frequencies, in particular between 100 Hz and 500 Hz. | 12-09-2010 |
| 20100320029 | LOW DENSITY NON-WOVEN MATERIAL USEFUL WITH ACOUSTIC CEILING TILE PRODUCTS - A non-woven material, that can be formed into an acoustic ceiling tile, is provided. The material includes a substantially planar and self-supporting core of an inorganic base fiber and a synthetic thermal bonding fiber. The synthetic thermal bonding fiber preferably has an increased bonding surface area that improves adhesion and porosity to provide a base mat or core with a low density to provide sound absorption required by an acoustic ceiling tile. | 12-23-2010 |
| 20110100746 | VISCOELASTIC PHONONIC CRYSTAL - A sound barrier and method of sound insulation are disclosed. In one aspect of the disclosure, a sound barrier comprises a first, solid medium, such as a viscoelastic solid and a second medium, such as air. At least one of the two media forms a periodic array disposed in the other medium. The solid medium has a speed of propagation of longitudinal sound wave and a speed of propagation of transverse sound wave, the speed of propagation of longitudinal sound wave being at least about 30 times the speed of propagation of transverse sound wave. | 05-05-2011 |
| 20110114414 | 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 thickness of less than about 0.050″, a mean pore size of between about 8 microns and about 40 microns, and an elongation at break of at least twenty percent. The acoustic facing includes less than about five percent synthetic microfiber and has an acoustic resistance of at least about 250 Rayls. | 05-19-2011 |
| 20110127107 | ACOUSTIC RESONATOR AND SOUND CHAMBER - An acoustic resonator adaptable to a sound chamber is designed to decrease a sound pressure while increasing a particle velocity of medium particles in a low frequency range without increasing the overall size thereof. The acoustic resonator is constituted of a pipe member having one opening end and a resistance member embracing a high resistance region and a low resistance region. The resistance member is inserted into the pipe member such that one end thereof matches the opening end of the pipe member whilst the other end thereof is disposed at a predetermined position inside a hollow cavity of the pipe member. The high resistance region embraces an antinode region of the particle velocity distribution with respect to a standing wave occurred in the hollow cavity at a resonance frequency, thus causing an acoustic phenomenon decreasing the resonance frequency compared to a single unit of the pipe member. | 06-02-2011 |
| 20110192678 | INTERLAYER FOR LAMINATED GLASS AND LAMINATED GLASS - The present invention provides an interlayer film for laminated glass, that exhibits an excellent sound-insulating performance for solid-borne sound in an environment at or below 0° C. Another object is to provide laminated glass that is obtained using this interlayer film for laminated glass. | 08-11-2011 |
| 20110247893 | Transportation Vehicle Sound Insulation Process and Device - A sound insulation process comprises (a) providing at least one sound insulation device comprising at least one sound barrier comprising at least one substantially periodic array of structures disposed in a first medium having a first density, the structures being made of a second medium having a second density different from the first density, wherein one of the first and second media is a viscoelastic medium having a speed of propagation of longitudinal sound wave and a speed of propagation of transverse sound wave, the speed of propagation of longitudinal sound wave being at least about 30 times the speed of propagation of transverse sound wave, and wherein the other of the first and second media is a viscoelastic or elastic medium; and (b) interposing the sound insulation device between an acoustic source area and an acoustic receiving area of a transportation vehicle. | 10-13-2011 |
| 20120138385 | ACOUSTIC RESISTANCE MEMBER AND METHOD FOR MAKING THE SAME - An acoustic resistance member includes an air-shielding layer which does not allow air to pass through such that acoustic waves do not propagate, and an acoustic resistance layer which allows air to pass through such that acoustic waves propagate. The air-shielding layer is composed of a resin containing a coloring agent, and a part of the air-shielding layer is removed. | 06-07-2012 |
| 20120285767 | ACOUSTICALLY ABSORPTIVE PANEL - An acoustically absorptive panel comprises a porous acoustical absorber having a planar configuration mounted on a support frame, an acoustically transparent front fabric stretch-mounted on the support frame and spaced from and in parallel alignment with the front face of the porous acoustical absorber and forming an airspace, the porous absorber, front fabric and forward air space acting as acoustical absorbing chamber capable of absorbing a greater range of sound frequencies than the porous acoustical absorber alone, the range of frequencies absorbed depending on the depth of the air space. | 11-15-2012 |
| 20120312631 | MULTI-LAYERED COMPOSIT PANEL FOR NOISE MITIGATION AND METHOD - The invention is directed at methods, materials, and articles for sound mitigation. The article for sound mitigation is a multi-layered composite article comprising a reinforcing substrate layer and a foam layer. The reinforcing substrate layer includes a fiber phase and a polymer phase. The fiber phase preferably includes one or more natural fibers. The natural fibers may be present at a concentration of about 60 wt. % or more, based on the total weight of the reinforcing substrate layer. The polymer phase is preferably a continuous phase and preferably has a glass transition temperature sufficiently high so that the panel maintains its stiffness at elevated temperatures. The concentration of the polymer phase may be about 10 wt. % or more, based on the total weight of the reinforcing substrate layer. Preferably both the foam layer and the reinforcing substrate layer are effective in reducing the transmission of a sound. | 12-13-2012 |
| 20130140108 | SOUND INSULATION MATERIAL AND METHOD FOR PREPARING THE SAME - Two sheets of nonwoven fabric with the same shape and size each including a rectangular body 11 | 06-06-2013 |
| 20130146392 | METHOD AND MACHINE FOR PRODUCING A SOUND-DEADENING INSERT FOR SILENCER OF AN EXHAUST-GAS DISCHARGE SYSTEM OF AN INTERNAL-COMBUSTION ENGINE - A method for producing a sound-deadening insert of a silencer of an exhaust-gas discharge system in an internal-combustion engine of a vehicle; the method comprises the steps of providing a mattress made up of continuous voluminized fibres of sound-deadening material, and needling the mattress so as to cause a compacting/interweaving of the fibres in order to obtain compacting lines. | 06-13-2013 |
| 20130186706 | 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 thickness of less than about 0.050″, a mean pore size of between about 8 microns and about 40 microns, and an elongation at break of at least twenty percent. The acoustic facing includes less than about five percent synthetic microfiber and has an acoustic resistance of at least about 250 Rayls. | 07-25-2013 |
| 20130220733 | Acoustically Damped Component - Acoustically damped component for a vehicle, an engine, a transmission or a vehicle trim panel, includes a flat basic body provided on at least one side with a rib structure. The ribs of the rib structure form chambers which are arranged irregularly on at least one region of the component, which has a resonant frequency of from 200 to 1000 Hz. The chambers are configured irregularly in such a way that chambers of the component have different dimensioning and/or geometry in comparison with adjoining chambers, such that emitted airborne sound can be reduced and/or eradicated. A response to a transient excitation of at least two part areas of that surface of the component which is provided with the chambers having a correlation of from 0.5 to 0.85, preferably of from 0.6 to 0.7. | 08-29-2013 |
| 20130233644 | Structural Mode Shape Alignment - A method is disclosed for reducing noise and vibration within a structure of a mobile platform, wherein the noise and vibration are at least in part caused by airflow over an outer skin of the mobile platform parallel to a longitudinal line extending fore to aft along the structure. The method may involve forming the structure such that a fundamental panel vibration mode shape of the structure is not parallel to the longitudinal line. | 09-12-2013 |
| 20140048351 | Acoustic Cover Assembly - An acoustic protective cover assembly comprising a porous membrane and an acoustic gasket is disclosed. The porous membrane is bonded to the acoustic gasket at a peripheral region, the membrane is left unhanded at a central region. The acoustic gasket comprises a composite of a porous polytetrafluoroethylene (PTFE) polymer matrix of polymeric nodes interconnected by fibrils, resilient expandable microspheres embedded within the matrix. | 02-20-2014 |
| 20140083796 | SOUNDPROOFING PLATE AND SOUNDPROOFING DEVICE PERMITTING AIR FLOW - A soundproofing plate comprising a substrate having a substrate having at least one through hole formed therein; and a soundproofing device mounted on the through hole of the substrate. The soundproofing device has a multiplex structure having at least a first structure and a second structure nested therein. The first structure comprises a through hole (“first air passage hole”) disposed in the center and communicating with the through hole of the substrate, and a first sound collecting portion disposed at both ends or one end and having a larger size than the aperture area of the first air passage hole, and being arranged so as to reflect incident noise. The second structure comprises a through hole (“second air passage hole”) disposed in the center and communicating with the through hole of the substrate, and a second sound collecting portion disposed at both ends or one end and having a larger size than the aperture area of the second air passage hole, and being arranged so as to reflect incident noise. | 03-27-2014 |
| 20140116802 | ACOUSTIC METAMATERIAL WITH SIMULTANEOUSLY NEGATIVE EFFECTIVE MASS DENSITY AND BULK MODULUS - A device with simultaneous negative effective mass density and bulk modulus has at least one tubular section and front and back membranes sealing the tubular section. The front and back membranes sealing the tubular sections seal the tubular section sufficiently to establish a sealed or restricted enclosed fluid space defined by the tubular section and the membranes, and restrict escape or intake of fluid resulting from acoustic vibrations. A pair of platelets are mounted to the membranes, with the individual platelets substantially centered on respective ones of the front and back membranes. | 05-01-2014 |
| 20140124290 | ULTRA-LIGHT SOUND INSULATOR - A sound insulator of the invention includes a sound absorption layer and an air-impermeable resonance layer, which are bonded to each other via an adhesive layer. The sound absorption layer has a thickness in a range of 5 to 50 mm, an area-weight of not greater than 2000 g/m | 05-08-2014 |
| 20140196981 | ACOUSTICALLY ABSORPTIVE PANEL - An acoustically absorptive panel comprises a forward airspace bounded by an acoustically transparent front fabric stretch-mounted on a support frame, and the front face of a porous acoustical absorber, the forward air space, the front fabric and the porous absorber collectively acting as acoustical absorbing chamber, wherein oppositely disposed end panels of the front fabric extend around opposing side frame members of one or more frame structures of the support frame and are connected to a pair of spaced apart retaining struts disposed between the side frame members, the distance between the retaining struts adjustable by rotating one or more threaded tension adjusters thereby stretching or relaxing the front fabric across the support frame to adjust the frequency at which sound absorption will be maximized. | 07-17-2014 |
| 20140291068 | TUNABLE ACOUSTICAL ABSORBING COMPOSITE BATT - A composite batt structure that forms an effective low frequency sound absorber for use in buildings, appliances, automotive vehicles, and the like. The composite structure uses a facer covering a batt comprised of carded and crosslapped mixture of fibers. The general acoustic behavior of the composite batt structure has a low frequency absorption maximum by varying the number of crosslaps or the proportions of the fiber mixture. This allows for the composite batt structure to be tunable or layered with different laps. | 10-02-2014 |
| 20140311823 | ACOUSTIC INSULATOR HAVING A TORTUOUS PATH - An acoustic insulator having a tortuous path located in its interior. | 10-23-2014 |
| 20150034413 | SOUND CONTROL APPARATUS - A sound control apparatus capable of improving the quality of the reproduction sound output from an electronic apparatus includes a sound control mat, and a support unit for supporting an electronic device having a speaker on the sound control mat. The sound control mat has a sound controlling structure configured to control the resonance of sound output from the speaker of the electronic apparatus when it is supported by the sound control mat. With this sound control apparatus, it is possible to enjoy a good tone directly output from a television, a stereo system or any other device having a small speaker without needing a special devising. | 02-05-2015 |
| 20150047923 | HYBRID ACOUSTIC BARRIER AND ABSORBER - A hybrid acoustic absorption and reflection resonator can includes a rigid structure defining a cell, a membrane with at least one orifice attached to the rigid structure, and a back sheet attached to the rigid structure and covering the cell. The membrane is configured to reflect acoustic waves in a predetermined range of frequencies. The rigid structure, the membrane, and the back sheet define a Helmholtz cavity; the Helmholtz cavity is configured to absorb acoustic energy at a frequency within the predetermined range of frequencies. | 02-19-2015 |
| 20150060193 | DYNAMICALLY RESPONSIVE ACOUSTIC TUNING ENVELOPE SYSTEM AND METHOD - A dynamic responsive acoustic tuning envelope system that includes a movably connected set of cells, each possessing sound reflecting, sound absorbing, and/or electro-acoustic properties, and which are assembled according to the principles of rigid origami. So configured, the system is capable of both localized surficial deformation to alter the material surface exposure, transform its textural profile, and alter the enclosed volume of space in a single material envelope, thereby tuning the acoustics of the environment in which the system resides. | 03-05-2015 |
| 20150060194 | SOUND ABSORBER, SOUND ABSORBER ASSEMBLY AND AN ENGINE WITH A SOUND ABSORBER ASSEMBLY - A sound absorber comprising a base body and a tongue ( | 03-05-2015 |
| 20150114751 | SOUNDPROOFING COVERING HAVING RESONATORS, A PANEL PROVIDED WITH THE COVERING, AND AN AIRCRAFT - A soundproofing covering ( | 04-30-2015 |
| 20150315781 | SOUND ABSORBING SHEET HAVING MICRO RESONANT STRUCTURE, METHOD FOR MANUFACTURING SAME, AND SOUND ABSORPTION TYPE SOUNDPROOF PANEL USING SAME - Disclosed are a sound absorbing sheet having a micro resonant structure and capable of improving sound absorption performance up to the low frequency band by means of the micro resonance principle, a method for manufacturing same, and a sound absorption type soundproof panel using same. The sound absorbing sheet according to the present invention has multiple uneven patterns configured to have convex parts and concave parts on one surface of a porous base material, and the area ratio of the concave part determined by the following formula 1 is 40 to 99%. The area corresponding to the concave part has a lower air permeability than the area corresponding to the convex part. [Formula 1] Area ratio of concave portion=[area portion of concave portion]/[area portion of porous base material]. | 11-05-2015 |
| 20160012812 | ACOUSTIC MODULE | 01-14-2016 |
| 20160027427 | Sound Attenuating Structures - A sound attenuation panel is configured with a substantially acoustically transparent planar, rigid frame divided into a plurality of individual, substantially two-dimensional cells. A sheet of a flexible material is fixed to the rigid frame, and a plurality of platelets fixed to the sheet of flexible material such that each individual cell of the plurality of cells is provided with a respective platelet to establish a resonant frequency, the resonant frequency defined by the planar geometry of the individual cells, the flexibility of the flexible material and the platelets. The cells are divided into at least two different types of the individual cells, configured so that sound waves emitted by a first type of said different types of individual cells establishes a sound cancellation pattern with sound waves emitted by a second type of said different individual cells or an aggregation of different types of the individual cells. | 01-28-2016 |
| 20160031386 | CAVITY ACOUSTIC TONES SUPPRESSION - A cavity system that tends to increase the thickness ( | 02-04-2016 |
| 20160031548 | CAVITY ACOUSTIC TONES SUPPRESSION - A cavity system that tends to increase the thickness ( | 02-04-2016 |
| 20160031549 | CAVITY ACOUSTIC TONES SUPPRESSION - A cavity system that tends to increase the thickness ( | 02-04-2016 |
| 20160046095 | PROGRESSIVE STIFFNESS STRUCTURAL-ACOUSTIC SANDWICH PANEL - A sandwich material having both structural strength and significant acoustic attenuation. In one embodiment, a sandwich is composed of an architected core secured between two facesheets, with a compliant layer forming the connection between the core and the facesheets. The compliant core has a low modulus, resulting in a low speed for elastic shear waves in the sandwich, at low static loads. At high static loads the compliant material stiffens and allows the sandwich to exhibit significant structural strength. | 02-18-2016 |
| 20160063985 | SOUND ABSORBERS - Balls changing volume when activated efficiently filing a gap providing acoustic and thermal insulation. A method of manufacturing of means for acoustic and thermal insulation, particularly at high temperatures, comprising providing an insulating and damping material; shaping of the insulating and damping material having geometric shapes, such as spherical or elliptical shapes, by a shaping processes, such as forming into a ball and/or foaming up. | 03-03-2016 |
| 20160071505 | METHOD AND APPARATUS FOR REDUCING NOISE TRANSMISSION THROUGH A WINDOW - Attenuators are introduced that offer quiet, enhanced sound quality for interior of enclosures than previous devices. An acoustical rating system for the levels of sound propagation through glass windows/windshields is introduced for the building and construction industry. Just as windows and insulation have an R-value to define the temperature energy efficiency of the interior of a room, an A-Rating™ system would define the acoustical energy efficiency of an enclosure space. In the summer, the higher the R-value, the less cool air that escapes a room through a window (and the less heat that penetrates into the interior), thus keeping the room cooler with less energy. Similarly, the higher the A-Rating™ of a window, the less noise that propagates through, maintaining lower levels of sound in the interior of an enclosure, creating a more harmonious, acoustically energy efficient room for enhanced health, preventing sleep interference, speech interference, and maintaining adequate levels of safety according to EPA and OSHA standards. The A-Rating™ system can help set standards for bearable and unbearable windows for a particular house, building, shopping store, restaurant, vehicle-cabin, fuselage cabin, locomotive/train/subway cabin, hotel, apartment, airport, library, museum, or any other enclosure, for a particular area or jurisdiction. | 03-10-2016 |
| 20160071507 | AIR PASSAGE TYPE OR WATER PASSAGE TYPE SOUNDPROOF WALL HAVING ACOUSTIC ISOLATION RESONANCE CHAMBER FORMED IN AIR PASSAGE CHANNEL OR WATER PASSAGE CHANNEL - At least one resonance chamber is disposed around an air passage channel passing through a window or a wall, and the air passage channel and the resonance chamber are separated from each other by a porous sound absorber. When sound and air pass through the air passage channel, the sound is absorbed and cut off by the resonance chambers, and the air passes through the air passage type channel. As a result, an air passage type soundproof window or wall through which the air passes and by which the sound is cut off can be manufactured, and a water passage type soundproof window or wall through which water passes and by which the sound is cut off in the same principle can be manufactured. | 03-10-2016 |
| 20160076453 | SOUND-DAMPING ARRANGEMENT FOR AN ENGINE NACELLE AND ENGINE NACELLE COMPRISING SUCH AN ARRANGEMENT - A sound-absorbing arrangement for an engine nacelle includes a first damping structure that includes a sound-damping honeycomb structure between a perforated inner layer and an outer layer, wherein the first damping structure has a first section and a second section that are arranged behind one another in the axial direction. The arrangement further includes a second damping structure that is formed in a ring-shaped manner and adjoins the first damping structure in the second section of the same in the radially external direction. The second damping structure is formed by multiple hollow chambers that adjoin each other in the circumferential direction, wherein the hollow chambers are formed without a honeycomb structure. | 03-17-2016 |
| 20160194866 | Acoustic Panel | 07-07-2016 |
