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| Number | Title | Issue Date |
| 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 panel portion and a peripheral panel portion integrally formed with and e... | 04/16/2013 |
| 8230969 | Acoustic panels, apparatus and assemblies with airflow-resistive layers attached to sound incident surfaces An acoustic panel includes a main body portion having a substantially planar front surface for orientation toward a sound source and an opposite, substantially convoluted rear surface. An airflow-resistive layer of material is secured to the planar front surface in ... | 07/31/2012 |
| 8157052 | Acoustic structure In an acoustic structure, sound absorbing effect is achieved by interference between incident waves falling in an opening portion and reflected waves radiated from the opening as a result of resonance occurring within a hollow member in response to the incident wave... | 04/17/2012 |
| 8006802 | Acoustic structure and acoustic room In a hollow member, a portion of a hollow region adjoining and communicating with an opening portion is constructed as an intermediate layer. The intermediate layer is constructed in such a manner that, when a reflective surface radiates reflected waves correspondin... | 08/30/2011 |
| 7997384 | Multilayer board for reducing solid-borne sound A multilayer board for reducing solid-borne sound radiation with improved mechanical stability when subjected to a load, comprising a first cover layer, a second cover layer, and at least one core layer, wherein the at least one core layer is arranged between the fi... | 08/16/2011 |
| 7963364 | Porous metal bodies used for attenuating aviation turbine noise A structural element used for attenuating aviation turbine noise is provided with pores (1, 2) embodied in the form of cylindrical channels which are open on the first ends inside the turbine housing and closed on the opposite ends thereof, wherein the diamet... | 06/21/2011 |
| 7870931 | Sound-absorbing insulation element with strengthening embossments The sound-absorbing insulation element is used everywhere sound and/or heat sources have to be shielded, preferably in automotive engineering as a heat shield. The insulation element comprises at least one studded sheet-shaped element which is provided with strength... | 01/18/2011 |
| 7721846 | Sound absorbing material Sound absorbing board (10) is made from recycled high density foam granulate (12) that has been mixed with a binder (14) and consolidated under pressure. Pores (16) are present in spaces between the granules. Each granule includes small p... | 05/25/2010 |
| 7721847 | 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 ... | 05/25/2010 |
| 7703575 | Three-dimensional tessellated acoustic components A set of acoustic components having complementarily tessellated shapes such that they may be nested together to constitute a rectangular parellelepiped, suitable for efficient storage and shipping. Each component also has a flat side. The shape set is further define... | 04/27/2010 |
| 7677359 | Sound absorbent Sound absorbent (1) of a hard material, such as metal, glass, hard plastic or composites thereof, for absorption of acoustic waves by friction of viscous flow, essentially in the frequency range between 100 and 4000 Hz. The sound absorbent (1) comprise... | 03/16/2010 |
| 7661511 | Board building material, board building material producing method, board building material installation method Perforations of a board for building material are formed by a number of recesses (13), or a number of recesses (13) and through-holes (12). A bottom face (16) of the recess forms a face for screwing or driving the fixing element (70 | 02/16/2010 |
| 7654364 | Sound absorbing structure A sound absorbing structure having excellent in sound absorbing performance, which is capable of achieving 0.4 or higher in the sound absorbing coefficient even in the case where a perforated panel is a thin plate such as aluminum foil within a range where a reducti... | 02/02/2010 |
| 7571790 | Sound absorption block and method of constructing the same A sound absorption block installed at a music box, a gymnasium, a studio, etc. to prevent sounds from being heard outside, and a method of constructing the same are disclosed. The present invention provides a sound absorption block, including a lower plate where a p... | 08/11/2009 |
| 7520370 | Combination acoustic diffuser and absorber and method of production thereof The present invention relates to a combination acoustic diffuser and absorber and method of production thereof. The diffuser has an acoustically reflective surface that may be made by the vacuum forming of pliable sheet material in conformity with a shaped template ... | 04/21/2009 |
| 7434659 | Acoustic septum cap honeycomb An acoustic structure that includes a honeycomb having cells in which septum caps are located. The septum caps are formed from sheets of acoustic material and include a resonator portion and a flange portion. The flange portion has an anchoring surface that provides... | 10/14/2008 |
| 7434660 | Perforated soundproof structure and method of manufacturing the same A perforated soundproof structure is formed by oppositely arranging an external plate 1 and an internal plate 2 having a number of through-holes 2a. The board thickness, hole diameter and open area ratio of the internal plate 2 are... | 10/14/2008 |
| 7428948 | Hybrid amplitude-phase grating diffusers A room acoustic diffuser exploits interference, by reflecting waves out-of-phase with the specular energy, making it possible to diminish specular energy. This is achieved by using a diffuser based on a ternary sequence, which nominally has reflection coefficients o... | 09/30/2008 |
| 7413053 | Acoustic resonator with impingement cooling tubes Aspects of the invention are directed to an acoustic resonator with improved impingement cooling effectiveness. The resonator includes a plate with an inside face and an outside face. A plurality of passages extend through the plate. The resonator includes a side wa... | 08/19/2008 |
| 7401682 | Architecture for an acoustic liner An acoustic liner 20 includes a remote panel 26, a perforated proximate panel 22 transversely spaced from the remote panel and one or more partitions 32 spanning across the space between the panels. At least one baffle 44 cooperate... | 07/22/2008 |
| 7364014 | Sound absorbing body, sound absorbing structural body, and method of manufacturing these bodies A sound absorbing body 40 has a molded body 44 including two unexpanded layers 41, 42 and an expanded layer 43 having a number of voids and held between these unexpanded layers 41, 42, a plurality of holes 41A of a depth tha... | 04/29/2008 |
| 7337876 | Suction apparatus with noise reduction means A suction apparatus is provided with noise reduction means in one or more airflow passages for reducing noise emission from an airflow generator or the like, wherein at least one airflow passage is provided with at least one indentation with a predetermined depth ex... | 03/04/2008 |
| 7322441 | Extended bandwidth folded well diffusor An extended bandwidth folded well diffusor extends the diffusion bandwidth of a shallow, asymmetric diffusor by incorporating maximum-depth, folded L-shaped, half-width wells on both ends (sides) of a diffusor, thus providing increased maximum well depth without inc... | 01/29/2008 |
| 7318499 | Noise suppression structure and method of making the same An integrated noise suppression acoustic panel includes a back plate, a face plate, and a bulk foam absorber disposed between the back plate and the face plate. The bulk foam absorber is formed of a thermoset material, such as bismaleimide or phenolic, and is manufa... | 01/15/2008 |
| 7314114 | Flat panel diffuser A device including a membrane having first and second faces; a first substrate disposed on the first face of the membrane and having (i) a plurality of first absorptive regions and (ii) a plurality of first reflective regions formed as wells in a face of the first s... | 01/01/2008 |
| 7311175 | Acoustic liner with bypass cooling An acoustic liner 20 includes a remote panel 26, a proximate panel 28 transversely spaced from the remote panel and a resonator chamber 34b residing between the panels. Perforations 38 penetrate the proximate panel in regist... | 12/25/2007 |
| 7308965 | Noise abatement wall A noise-absorbing device includes a substantially flat base and embossed and/or hollow elements each including at least one recess. This base reveals with the embossed and/or hollow elements, a configuration exhibiting a fractality zone of between 1 cm and 50 cm, of... | 12/18/2007 |
| 7261182 | Wide band sound diffuser with self regulated low frequency absorption and methods of mounting The present invention relates to an acoustical diffuser device, said apparatus comprising the main body from FIG. 1 and two lateral rigid supports (5), glued to the inside of the said diffuser which lateral supports are received, like a drawer, by two ... | 08/28/2007 |
| 7201254 | Machine housing component with acoustic media grille and method of attenuating machine noise Air flow openings in a machine housing facilitate air exchange with a machine, but may become outlets for machine noise. In order to protect a machine from possibly damaging elements while facilitating air exchange and attenuating machine noise, the present disclosu... | 04/10/2007 |
| 7182172 | Sound insulation system A sound insulation system for use with a vehicle includes a layer of fibrous padding material having a first surface and an opposite second surface. The first surface includes multiple spaced apart recesses. The second surface includes a substantially flat surface p... | 02/27/2007 |
| 7178630 | Acoustic device for wall mounting for diffusion and absorption of sound A wall-mountable acoustic device for absorption of sound in an indoor area is constructed of self-supporting interbonded rockwool mat material. The primary component made of the mat material is shaped in semi-cylindrical configuration. End panels of rockwool mat of ... | 02/20/2007 |
| 7179846 | Soundproofing and thermally insulating structural element A structural element of closed-cell polyurethane rigid foam, with good thermal insulation and improved sound absorption is achieved by means of surface depressions satisfying specified criteria. ... | 02/20/2007 |
| 7124856 | Acoustic liner for gas turbine engine A passive acoustic liner system (50) for attenuating a sound field comprising, in acoustic series, a mode-scattering segment (48) and a sound-absorbing segment (40), wherein the mode scattering segment (48) provides a reactance between âˆ... | 10/24/2006 |
| 7093814 | Vibration isolating mount The present invention comprises a vibration isolating mount used to mount a furring channel to a mounting surface wherein the furring channel comprises a channel portion and two opposing furring channel flanges. The vibration isolating mount comprises a vibration is... | 08/22/2006 |
| 7070848 | Vehicle acoustic barrier An acoustic barrier that achieves excellent noise insulating properties, and is relatively thin and relatively light in weight includes a flexible thermoplastic barrier layer having a plurality of apertures defining a latticed structure which includes apertures for ... | 07/04/2006 |
| 7059089 | Flexible sheet materials for tensioned structures, a method of making such materials, and tensioned false ceilings comprising such materials A flexible sheet material of thickness less than half a millimeter for making tensioned structures such as false ceilings, in particular, the material including microprojections formed by displacing the material from which it is made, said material presenting an aco... | 06/13/2006 |
| 7017250 | Vehicle cockpit assemblies having integrated dash insulators, instrument panels and floor coverings, and methods of installing same within vehicles Vehicle cockpit assemblies and methods of installing same within vehicles are provided. A vehicle cockpit assembly includes a dash insulator that is configured to be attached to a vehicle firewall, an instrument panel attached to the dash insulator, and a floor cove... | 03/28/2006 |
| 7011181 | Sound insulation system A sound insulation system for use with a vehicle includes a layer of fibrous padding material having a first surface and an opposite second surface. The first surface includes multiple spaced apart recesses. The second surface includes a substantially flat surface p... | 03/14/2006 |
| 6977109 | Microperforated polymeric film for sound absorption and sound absorber using same Microperforated polymeric films and sound absorbers using such films are provided. The microperforated polymeric films may be relatively thin and flexible and may further include holes having a narrowest diameter less than the film thickness and a widest diameter gr... | 12/20/2005 |
| 6953105 | Damping foil consisting of several layers and a method for producing same A multi-layer damping foil having a perforated lower layer facing towards a part to be damped, with properties which are suitable for adhering the damping foil onto the part. A non-perforated upper layer, facing away from the part, does not have adherence properties... | 10/11/2005 |
