Space Absorbers Patents (Class 181/295)
  • Patent number: 10584488
    Abstract: A dynamic acoustic locking ceiling baffle and a dynamic acoustic locking ceiling system, that includes a single piece of material folded into acoustic locking ceiling baffles, using locking pieces and locking mechanisms, to quickly and easily install the acoustic locking ceiling baffle onto construction ceiling hangers to provide an aesthetically pleasing image, along with a reduction in unwanted noise or room acoustics.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 10, 2020
    Assignee: TURF DESIGN, INC.
    Inventors: Jason Gillette, Kuan-Wen Chiu
  • Patent number: 10570617
    Abstract: Described herein is an acoustic structural panel having a first exposed major surface opposite a second exposed major surface and side surfaces extending between the first and second exposed major surfaces, the acoustic structural panel comprising a first protective layer comprising at least a portion of the first exposed major surface, a second protective layer comprising at least a portion of the second exposed surface, a core structure located between the first and second protective layers, the core structure comprising, a foam body; and a fibrous body, wherein the first major exposed surface of the acoustic structural panel comprises a plurality of apertures exposing the fibrous body.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: February 25, 2020
    Assignee: TRI BMS, LLC
    Inventors: John Michael Kolcun, James John Kolcun, Eric Anthony Kukoda, Arthur Balzereit
  • Patent number: 10508444
    Abstract: A dynamic acoustic ceiling baffle and a dynamic acoustic ceiling baffle system, that includes multiple shaped baffles that can be quickly and easily installed onto construction ceiling hangers without the need for additional tools, to provide an aesthetically pleasing image, such as an undulating image, along with a reduction in unwanted noise or room acoustics.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 17, 2019
    Assignee: TURF DESIGN, INC.
    Inventors: Jason Gillette, Dustin Headley
  • Patent number: 10508453
    Abstract: A sound-absorbing element and a sound-absorbing system comprising a fibrous material having the following properties is described: specific airflow resistance comprised between 527 and 1552 [Pa s/m]; and mass porosity comprised between 66% and 79%.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: December 17, 2019
    Assignee: ELEDA S.R.L.
    Inventor: Renato Caimi
  • Patent number: 10508573
    Abstract: A noise attenuation baffle assembly for a duct, is provided. The baffle assembly includes a number of baffles arranged in a spaced apart relation to one another. Each baffle includes a first side and a second side. The baffle assembly further includes a first bracket coupled to the first side of each baffle of the number of baffles. The baffle assembly further includes a second bracket coupled to the second side of each baffle of the number of baffles. The first and the second bracket are configured to be coupled to the duct.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: December 17, 2019
    Assignee: Caterpillar Inc.
    Inventor: Luigi Antonio Pedrini
  • Patent number: 10240347
    Abstract: An acoustic panel for use in an interior space is disclosed along with a system and method for using two or more of such panels to improve the acoustics of the interior space. Each acoustic panel comprises a substrate and a plurality of nodules affixed to the substrate wherein each nodule has a width and a substantially right triangular shape across the entire width with a first leg of the right triangular shape substantially perpendicular to the substrate, a base of the right triangular shape substantially parallel to the substrate and a hypotenuse, the first leg of each nodule having a height that is substantially less than a length of a quarter wave formed in the interior space by a lower frequency signal.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: March 26, 2019
    Inventor: Hanson Hsu
  • Patent number: 10109269
    Abstract: A sound-absorption assembly comprises a tubular-shaped body having ends closed respectively by first and second microperforated tensioned flexible sheets and at least one planar diaphragm disposed inside the tubular body between the microperforated flexible sheets so as to delimit two spaces between said sheets.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: October 23, 2018
    Inventor: Jean-Marc Scherrer
  • Patent number: 9969151
    Abstract: The present invention discloses a high sound absorption coefficient expanded PTFE composite fiber cotton, comprising a melt-blown high polymer fibrous layer and an expanded PTFE film layers or a modified film layer of expanded PTFE, the modified film layer of expanded PTFE is made by conducting modification treatment to a PTFE film; the high sound absorption efficiency expanded PTFE composite fiber cotton is made by combining the melt-blown high polymer fibrous layer and the expanded PTFE film layer or the modified film layer of expanded PTFE. Thus, the present invention with better full-frequency sound absorption capability and marked full-frequency sound absorption effect can be bound in a large area or filled on automobiles' engine hoods, body racks or the inner side face of automobile trunks to substantially absorb automobile noise; it has advantages such as chemical inertness, waterproof, dustproof, permeable filterability, long service life and weldability.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: May 15, 2018
    Assignee: PANASIAN MICROVENT TECH (JIANGSU) CORPORATION
    Inventors: Yun Zhang, Ronghua Ding
  • Patent number: 9845598
    Abstract: An acoustic panel for use in an interior space is disclosed along with a system and method for using two or more of such panels to improve the acoustics of the interior space. Each acoustic panel comprises a substrate and a plurality of nodules affixed to the substrate wherein each nodule has a width and a substantially right triangular shape across the entire width with a first leg of the right triangular shape substantially perpendicular to the substrate, a base of the right triangular shape substantially parallel to the substrate and a hypotenuse, the first leg of each nodule having a height that is substantially less than a length of a quarter wave formed in the interior space by a lower frequency signal.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: December 19, 2017
    Inventor: Hanson Hsu
  • Patent number: 9822938
    Abstract: Disclosed is a sound absorbing lighting panel (100) comprising a sound absorbing member (120); an optical medium (130) over said sound absorbing member; a first set (140) of solid state lighting elements (142) arranged along a first edge of said optical medium; a translucent sheet (150) over the optical medium, said translucent sheet having a non-uniform degree of translucency such as a higher degree of translucency over a central region of said optical medium than over a first region of said optical medium comprising said first edge. A modular surface system including such a sound absorbing lighting panel is also disclosed.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: November 21, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventor: Ronald Cornelis De Gier
  • Patent number: 9818393
    Abstract: An acoustically absorbent cell for an acoustic panel, comprising a layer with a porous matrix incorporating a plurality of acoustic resonators between a first face and a second face of the porous matrix is described. The resonators are ordered so as to form at least two substantially parallel rows each comprising at least two resonators and extending along the first and second faces.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: November 14, 2017
    Assignees: LE CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DU MAINE, SUPMECA
    Inventors: Clement Lagarrigue, Jean-Philippe Groby, Vincent Tournat, Olivier Dazel, Benoit Nennig
  • Patent number: 9784423
    Abstract: Disclosed is a sound absorbing lighting panel (100) comprising a sound absorbing member (120); an optical medium (130) over said sound absorbing member; a first set (140) of solid state lighting elements (142) arranged along a first edge of said optical medium; a translucent sheet (150) over the optical medium, said translucent sheet having a non-uniform degree of translucency such as a higher degree of translucency over a central region of said optical medium than over a first region of said optical medium comprising said first edge. A modular surface system including such a sound absorbing lighting panel is also disclosed.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: October 10, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventor: Ronald Cornelis De Gier
  • Patent number: 9714508
    Abstract: A structure configured with an inner, sound limited or reduced volume is formed with a frame and a sheet material arranged about the frame to form and enclose the sound limited or reduced volume. The sheet material includes a base layer and a layer of sound-absorbing material provided on or integral with the base layer and the sound limited or reduced volume includes a form of egress that in an open state allows for the sound entry to and exit from the sound limited or reduced volume and in a closed state limits sound entry to and exit from the sound limited or reduced volume.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: July 25, 2017
    Inventors: Tara A. Israel, Bonnie S. Schnitta
  • Patent number: 9495949
    Abstract: The invention relates to an acoustic module for influencing, particularly reducing, sound reflections and/or sound transmissions in a space. The module is constructed as a three-dimensional hollow body, comprising at least one sheet material made of thin-walled flexurally elastic material, which is placed under bending stress by at least one additional sheet material so as to form a cavity, in such a manner that said thin-walled flexurally elastic material assumes a curved shape. The module is characterized by particularly good acoustic properties and can be produced economically.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: November 15, 2016
    Assignee: MUSIKON GMBH
    Inventor: Thomas Wiegel
  • Patent number: 9482438
    Abstract: A radiant heating panel, for typical use as cover for interior walls and ceilings, is provided, that is manufactured in a continuous process involving at least one sheet material, a settable material and a heating element. A method of installing such a heating panel is also provided, along with an apparatus and method required to terminate the heating panel.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 1, 2016
    Assignee: WINSTONE WALLBOARD LIMITED
    Inventors: Richard Dod Coates, Alexander Stewart Vaughan
  • Patent number: 9453335
    Abstract: The invention relates to 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 least one absorbing body of acoustic energy absorbing material located adjacent to a rib of the enclosure. The acoustic vibrations most disturbing the processes in the apparatus within the enclosure are caused by standing acoustic waves within the enclosure with frequencies in the range between 50 Hz and 1000 Hz. These acoustic waves are efficiently damped by the provision of a block of acoustic absorbing material adjacent to one of the ribs of the enclosure, to such an extent that the need for thick walls of the enclosure is substantially obviated, leading to a less voluminous enclosure.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: September 27, 2016
    Assignee: FEI COMPANY
    Inventors: Albert Visscher, Joseph Hubert Marie Guillaume Schroen
  • Patent number: 9410403
    Abstract: A novel underwater noise abatement and deployment system are described. The system uses inverted open-ended resonators (e.g., Helmholtz resonators) to absorb underwater noise. The system includes stackable resonator cavity embodiments arranged to surround a noisy environment or act nearby it. The system can be deployed from a ship or barge or similar structure, and can be stored when not in use.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 9, 2016
    Assignee: AdBm Corp.
    Inventors: Mark S. Wochner, Lawrence R. Gravell, Steven De Leon, Richard A. Patterson
  • Patent number: 9369805
    Abstract: The invention relates to an acoustic absorber comprising an absorption layer (1a, 1b) composed of an open-pored porous material. According to the invention, the open-pored porous material is flexurally stiff in such a way that the absorption layer (1a, 1b) is stimulated to flexurally oscillate when sound waves impinge on the absorption layer and the absorber can absorb sound waves of a first frequency range because of the inflow of air into the open-pored porous material of the absorption layer and can absorb sound waves of a second frequency range that comprises lower frequencies than the first frequency range because of the stimulation of flexural oscillations of the absorption layer. The invention further relates to an acoustic transducer and to a method for producing an acoustic absorber or an acoustic transducer.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: June 14, 2016
    Assignee: WILSON, LEENA ROSE
    Inventor: Willsingh Wilson
  • Patent number: 9343059
    Abstract: A system for reducing noise emissions in underwater environments is presented. The system can be extended to applications in any two-fluid environments where one fluid (gas) is contained in an enclosed resonator volume connected to the outside environment at an open end of the resonator body. The resonators act as gas-containing (e.g., air) Helmholtz resonators constructed into solid panels that are submerged in the fluid medium (e.g., sea water) in the vicinity of a noise generating source. The oscillations of the trapped air volume in the resonators causes reduction of certain noise energy and a general reduction in the transmitted noise in the environment of the system.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: May 17, 2016
    Assignee: Board of Regents, The University of Texas System
    Inventors: Preston Wilson, Kevin M. Lee, Mark S. Wochner, Hector L. Mendez Martinez
  • Patent number: 9027706
    Abstract: An enhanced, lightweight acoustic absorber is provided. The acoustic absorber is bounded by the at least one scrim layer without need for additional layers, such as melt-blown or nonwoven layers. The at least one scrim layer includes at least one non-planar, folded scrim layer bonded to itself or another scrim layer to form a plurality of air spaces between folded portions of the at least one scrim layer. The at least one scrim layer establishes a thickness of the acoustic absorber extending across opposite exposed sides of the acoustic absorber.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: May 12, 2015
    Assignee: Federal-Mogul Powertrain, Inc.
    Inventor: Eric K. Staudt
  • Publication number: 20140299410
    Abstract: A furniture system for optimizing sound levels and acoustics in a learning environment. The system includes a plurality of pieces selected from a toy shelf, a bridge/tunnel structure, a sandwich board shelf unit, a tunnel with interior shelves, a toy box with leaning bendable posts, a bench/tunnel with combination seat, tunnel, and shelf, a listening center, a stealth chair/cave structure, stealth leaning surface/cave, a multifunctional zigzag chair, and a multipurpose chair/easel.
    Type: Application
    Filed: April 5, 2014
    Publication date: October 9, 2014
    Inventor: Nancy Hebenthal
  • Patent number: 8789652
    Abstract: An attenuator for attenuating acoustic waves, the attenuator comprising: a first body defining a cavity therein and an elongate open aperture extending across a substantial portion of the first body, the first body being configured to attenuate acoustic waves over a resonant frequency band.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: July 29, 2014
    Assignee: Sonobex Limited
    Inventors: Gerard Michael Swallowe, Daniel Peter Elford, Feodor Kusmartsev, Luke Chalmers
  • Patent number: 8689934
    Abstract: A sound absorbing structure includes multiple sound absorbers. The sound absorbers are assembled together into a sound absorbing member. The sound absorbing member absorbs sound emitted from a sound source. Each of the sound absorbers is shaped like a hollow tube. Each of the sound absorbers has a hole extending in its axis direction.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: April 8, 2014
    Assignees: Denso Corporation, Toyota Boshoku Kabushiki Kaisha
    Inventors: Yoshitaka Nishio, Naohito Seko
  • Patent number: 8668046
    Abstract: A baffle is provided that includes at least one carrier and a sealer disposed in a recess. When placed in a cavity, such as a vehicle cavity, sealer also expands into the cavity to seal the cavity. Baffle can be modified by including an insert within carrier to increase the weight, density, and structural rigidity of baffle, without altering the exterior dimensions of baffle. A baffle that includes an insert can be customized based on a particular application, without requiring time-consuming and expensive tooling changes.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: March 11, 2014
    Assignee: Sika Technology, AG
    Inventors: Guillaume Lecroart, Vincent Belpaire
  • Patent number: 8636104
    Abstract: 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.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: January 28, 2014
    Assignee: Meyer Sound Laboratories, Incorporated
    Inventors: John D. Meyer, Helen Meyer, Marcy Wong, Deborah Lynne O'Grady, Pierre Germain
  • Patent number: 8631901
    Abstract: An acoustic structure includes plate members defining a plurality of hollow regions in parallel relation to each other. Opening portions are formed in one surface (reflective surface) of the plate members in corresponding relation to the hollow regions and in such a manner as to communicate the hollow regions with an external surface. A plurality of sound absorbing members are provided in a dispersed fashion on regions of the one surface (reflective surface) other than the opening portions and neighborhoods of the opening portions. As a modification, a sound absorbing member may be loaded in one of the hollow regions and partly exposed to the outer space through the corresponding opening portion.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: January 21, 2014
    Assignee: Yamaha Corporation
    Inventors: Yoshikazu Honji, Junichi Fujimori, Makoto Kurihara
  • Patent number: 8573356
    Abstract: An adjustable sound panel having a sound diffusing element and a sound absorbing element.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 5, 2013
    Inventor: Joab Jay Perdue
  • Patent number: 8360201
    Abstract: A sound absorber is formed by covering the opening of a housing with a vibration member having a flat shape or a film shape so as to define an air layer therebetween. The sound absorber is attached to the wall of a room such that the vibration member is positioned opposite to the wall with a prescribed space therebetween. Sound generated in the room particularly in low frequencies enters into the space between the vibration member and the wall so as to cause vibration of the vibration member due to the pressure difference between the sound pressure applied to the space and the internal pressure of the air layer, thus consuming energy of sound waves. Thus, it is possible to efficiently absorb low-frequency sound with a reduced thickness of the air layer.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: January 29, 2013
    Assignee: Yamaha Corporation
    Inventor: Rento Tanase
  • Patent number: 8270627
    Abstract: An adaptive noise control system is deployed in a box-like structure positioned within the transfer path along which the noise is being transmitted from the source of the generated noise to the receiver of the noise in the passenger compartment of an automobile. The adaptive noise control system is can be deployed in the dual bulkhead of the vehicle dashboard to provide a constrained volume within which engine noise can be controlled. The adaptive control system generates a mathematical model of the noise to be controlled in response to the acoustic environment identified by sensors placed within the engine compartment. Sensors in the passenger compartment define the effectiveness of the noise control system. The controller is operable to update the mathematical model in response to the changes in the acoustic environment, thus providing the appropriate acoustic response within the dual bulkhead plenum for control of noise along the transfer path.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: September 18, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Takeshi Abe, Robert G. Rebandt, II, Ming-te Cheng
  • Publication number: 20120152650
    Abstract: An attenuator for attenuating acoustic waves, the attenuator comprising: a first body defining a cavity therein and an elongate open aperture extending across a substantial portion of the first body, the first body being configured to attenuate acoustic waves over a resonant frequency band.
    Type: Application
    Filed: February 4, 2010
    Publication date: June 21, 2012
    Applicant: LOUGHBOROUGH UNIVERSITY
    Inventors: Gerard Michael Swallowe, Daniel Peter Elford, Feodor Kusmartsev, Luke Chalmers
  • Patent number: 8184820
    Abstract: A noise control system is directed to the path along which the noise is transmitted from the source of the noise being generated to the receiver of the noise in the passenger compartment of an automotive vehicle. The noise control system is deployed in a box structure, such as the dual bulkhead of the dashboard of the vehicle, to provide a constrained volume within which engine noise can be controlled. The dual bulkhead plenum houses an active noise control apparatus, such as a speaker or a vibrating device, between the bulkheads to be operable with a control algorithm to generate sound that can control the noise or vibrations generated by the engine. The plenum can also be treated with passive noise control materials, such as viscoelastic damping materials, acoustical foam or heavy vinyl barrier and foam to block airborne sound and vibrations, in addition to the active noise control.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: May 22, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Takeshi Abe, Robert G. Rebandt, II, Ming-te Cheng
  • Patent number: 8157052
    Abstract: 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 waves, and a sound absorbing region is formed, for example, in a frontal direction of the opening portion. Sound scattering effect is achieved through interaction between the above-mentioned interference and interference between the incident waves and sound waves radiated from the opening portion, and a sound scattering region is formed, for example, near the sound absorbing region. A sound scattering effect is achieved by flows of gas molecules being produced in an oblique direction, not normal to the opening portion and reflective surface, due to a phase difference between the sound waves radiated from the opening portion and the sound waves radiated from the reflective surface.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: April 17, 2012
    Assignee: Yamaha Corporation
    Inventors: Junichi Fujimori, Yoshikazu Honji
  • Patent number: 8144889
    Abstract: A noise control system operable within a box-like structure provided by the dual bulkhead plenum of the vehicle dashboard positioned within the transfer path along which the noise is being transmitted from the source of the generated noise to the receiver of the noise in the passenger compartment of an automobile. The plenum is divided into discrete chambers into each of which is provided smart materials affixed to the walls of the plenum to be operable for selectively changing a property characteristic of the chambers to vary the acoustic resonance of the plenum and change the effectiveness of controlling the transmission of noise energy therethrough. A controller is coupled to the smart materials to change said property characteristic of the smart material in response to noise cancellation requirements.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: March 27, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Ming-te Cheng, Takeshi Abe, Robert G. Rebandt, II
  • Patent number: 8136630
    Abstract: 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.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: March 20, 2012
    Inventor: Bonnie Schnitta
  • Patent number: 8132644
    Abstract: A method and apparatus for the reduction of sound travelling in a wave-guide in the air above the ground is presented, comprising the provision below the ground of at least a top layer which, at the interface of the top layer and air, has an acoustic impedance which substantially matches the acoustic impedance of the air. Also a cylindrical structure with holes can be used. The method and apparatus may be used for the reduction of aircraft sounds, especially in the range of 15 Hz to 40 Hz, during the first part of take-off, wherein said layer(s) below the ground are provided in a range starting at a lateral side of the runway and extending until at least 100 meters, preferably until at least 300 meters and more preferably until at least 500 meters, from the runway.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: March 13, 2012
    Assignee: Stichting Nationaal Lucht-En Ruimtevaart Laboratorium
    Inventor: Theo Antoon Van Veen
  • Patent number: 8028791
    Abstract: A sound reflective acoustic panel includes a panel having a scored surface. The scored surface includes a plurality of substantially parallel spaced apart kerfs. The kerfs are configured to allow the panel to flex. A plurality of support ribs are attached to the scored surface of the panel. The plurality of support ribs have a curved shape and a length. A suspension mechanism is attached to the support ribs and is suitable for mounting the panel to a building support surface.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: October 4, 2011
    Assignee: Owens Corning Intellectual Capital, LLC
    Inventors: Dennis R. Kliegle, Alfonso E. Perez
  • Patent number: 8006802
    Abstract: 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 corresponding to incident sound waves falling from an external space on the opening portion and the reflective surface of the hollow member, a phase, in the opening portion, of reflected waves produced by resonance of the resonator in response to the incident waves differs from a phase of reflected waves on the reflective surface, and that the absolute value of a value obtained by dividing a specific acoustic impedance of the opening portion by a characteristic impedance of a medium of the opening portion is less than one. A sound absorbing effect through resonance-based action in the opening portion and a sound scattering effect through a flow of gas molecules.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: August 30, 2011
    Assignee: Yamaha Corporation
    Inventor: Yoshikazu Honji
  • Patent number: 8005235
    Abstract: A noise control system is operable within a box-like structure provided by the dual bulkhead plenum of the vehicle dashboard positioned within the transfer path along which the noise is being transmitted from the source of the generated noise to the receiver of the noise in the passenger compartment of an automobile. The plenum is divided into discrete chambers into each of which is provided a counter noise generating apparatus to create a counteracting noise offsetting the noise generated at the source. The acoustic resonance of the chambers amplifies the noise control energy. The geometry of the individual chambers can be varied to optimize the packaging and sound control or shaping strategy. The sound energy permitted to pass through the plenum to the driver's side of the passenger compartment can be tuned to be different than the noise received in the passenger's side.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: August 23, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert G. Rebandt, II, Ming-te Cheng, Takeshi Abe
  • Patent number: 7971680
    Abstract: An acoustic housing, a light fixture, a suspended ceiling system, and a method of decreasing sound transfer from a light fixture in a suspended ceiling are disclosed. An acoustic hood for a light fixture in a suspended ceiling may include a partially enclosed space formed between a plurality of wall portions. A light fixture may include first and second layers that are coupled to one another and form a partially enclosed space. A suspended ceiling system may include the acoustic hood or light fixture. The method relates to disposing an acoustic housing spaced from the light fixture.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: July 5, 2011
    Assignee: Spirit Acoustics Inc.
    Inventors: Herbert J. Morgan, III, Mark A. Adkins
  • Publication number: 20110056763
    Abstract: An acoustic resonance device is installed in a compartment of a vehicle so as to reduce a low-frequency sound pressure (or noise) dependent upon a natural vibration. Specifically, an acoustic resonance device is a panel/diaphragm resonator, a resonance pipe, or a Helmholtz resonator, the inner space of which communicates with the compartment via an opening. The acoustic resonance device is positioned in proximity to an antinode of sound pressure owing to a natural vibration occurring in a driver/passenger space inside the compartment. Alternatively, the acoustic resonance device increases a particle velocity at a specific natural frequency or decreases sound pressure at an excitation frequency which occurs due to an external condition of the vehicle. The acoustic resonance device can be installed in a roof, a seat, a pillar supporting the roof, or a door of a vehicle.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 10, 2011
    Applicant: Yamaha Corporation
    Inventors: Rento Tanase, Hiroshi Nakashima, Yasutaka Nakamura, Keiichi Fukatsu, Atsushi Yoshida, Shinichi Kato
  • Patent number: 7819221
    Abstract: A flexible membrane is attached to an internal wall of the fairing of a flight vehicle. The membrane is inflated with gas to achieve a shape that couples with and thereby attenuates the first acoustic resonance occurring within the volume enclosed by the fairing. A sensor senses the varying ambient atmospheric pressure during flight. A pressure regulating system includes an inflation valve and pressure relief valve. Based on the sensed ambient atmospheric pressure, this system adjusts the membrane's gauge pressure throughout the flight trajectory to maintain the desired coupling gauge pressure. Acoustic blankets can also be attached to the internal walls of the fairing to abate resonances having frequencies greater than 500 Hz. Inflating the membrane with helium enhances the attenuation otherwise obtained. Multiple membranes can be individually tuned to respectively attenuate multiple acoustic resonances.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: October 26, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Steven A. Lane, Robert E. Richard, Steven F. Griffin
  • Patent number: 7762375
    Abstract: The object of the present invention is to provide a soundproofing material that is lightweight and has sufficient soundproofing performance. The present soundproofing material includes a frame body including a planar portion and a wall body installed upright on the planar portion and a soundproofing laminate accommodated in a laminate accommodating portion surrounded by the wall body, and the soundproofing laminate has a hard layer consisting of a rubber sheet or the like and a soft layer whose one side of the soft layer is laminated on the hard layer and consists of a felt, a resin foam or the like, and another side of the soft layer is joined to at least one of the planar portion and/or the wall body of the frame body, and a side surface of the soundproofing laminate and a side surface of the wall body are distant from each other. The distance thereof is preferably in the range from 0.3 to 1 mm.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: July 27, 2010
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Sohei Matsuyama, Michio Takeda, Shigeki Takamido, Rui Tokida
  • Patent number: 7703575
    Abstract: 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 defined such that many aesthetically attractive, sculpture-like configurations may be created through installation of the components on a flat surface of a building such as a wall or ceiling, while substantially modifying the acoustic properties of the building feature. Acoustically absorptive, reflective, and diffusive components can be used in combinations with each other in order to achieve desired acoustic treatment of the building feature. Several methods of fabrication of the acoustic components are disclosed.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: April 27, 2010
    Assignee: pArtScience, LLC
    Inventors: Russell E. Berger, II, Charles M Chiles, Richard Schrag
  • Publication number: 20100089691
    Abstract: 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.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 15, 2010
    Applicant: YAMAHA CORPORATION
    Inventors: YASUTAKA NAKAMURA, Rento Tanase, Atsushi Yoshida, Masaru Matsushita
  • Patent number: 7574833
    Abstract: This invention is a device that is mounted on the top of a movable office partition to improve the acoustical efficacy of the partition. It is equally effective on new or on existing partitions and can be made to fit all the major brands in the movable partition market. It is attractive, lightweight, durable, inexpensive to manufacture and easy to install. The device is able to absorb incident sound and redirect diffracted sound to a path that will reduce sound levels reaching a listener in adjacent cubicles.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: August 18, 2009
    Inventor: Charles H. Stark
  • Patent number: 7571790
    Abstract: 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 plurality of unit structures are regularly arranged in horizontal and vertical directions, the unit structure having rectangular an opening that becomes gradually smaller; and an upper plate arranged on the lower plate to divide each of the openings of the unit structures in four parts. Accordingly, the sound absorption block of the present invention may be made of metals, as well as inexpensive building residues, etc. because a sound wave was decreased and offset regardless of the materials.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: August 11, 2009
    Inventor: Bae-Young Kim
  • Patent number: 7565951
    Abstract: An acoustic assembly including a thin sound absorbing panel supported by foldable mounting brackets is adapted to be mounted upon the walls of an indoor listening enclosure. The space behind the panel functions as an acoustic diffusion chamber which augments the acoustic performance of the panel. A number of such assemblies are employed in a manner such that the panels are offset from the wall and downwardly angled.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: July 28, 2009
    Inventor: Joab Jay Perdue
  • Patent number: 7562743
    Abstract: An acoustical dampening barrier, for an opening in a wall, that is translatable to an open position to allow access to the opening, the fixed barrier including a first barrier layer made of at least one of a rigid and semi-rigid material, a second barrier layer fixed to the first barrier layer on a side of the first barrier layer where a sound to dampen is emitted made of an acoustic material with sound attenuation characteristics, a third barrier layer fixed to the second barrier layer on a side of the second barrier layer where a sound to dampen is emitted made of an acoustic material with sound absorptive characteristics, and a seal material connected to at least one of the opening in the wall, the first barrier layer and the third barrier layer to further dampen a sound emitted when the fixed barrier is translated to a closed position to prevent access to the opening.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: July 21, 2009
    Assignee: Quietly Making Noise, LLC
    Inventors: Lisa A. Beeson, Joseph G. Gaddone
  • Patent number: 7464790
    Abstract: A sound insulation/absorption structure, a sound insulation/absorption device, and a structure having these applied thereto and a member constituting the same, are capable of insulating or absorbing sound by stiffness control. The sound insulation/absorption structure comprises a film member, such as a polymer film or metal foil, and a frame body having at least one annular opening, the film member being fixed to the frame body, the section of the film member surrounded by the frame body being of a curved shape such as a dome, wherein the resonance frequency of the in-plane stretching of this curved shape is set at a frequency equal to or higher than the audible frequency band, so as to insulate or absorb sound by the elastic force of the film. The film member may be replaced by an acrylic, polyethylene terephthalate or other plastic plate, an aluminum or other metal plate, or a veneer or other plate member, molded into a curved shape, such as a dome, a semi-cylinder and a cone.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: December 16, 2008
    Assignees: Rion Co., Ltd, Kobayashi Institute of Physical Research
    Inventors: Hidekazu Kodama, Munehiro Date, Pavel Mokry, Kazunori Kimura, Tomonao Okubo, Eiichi Fukada
  • Publication number: 20080164094
    Abstract: An acoustic scatterer element (10) incorporates a plurality of convex surfaces (38.1, 38.2) have a plurality of associated curvatures in a corresponding plurality of different directions. A plurality of acoustic scatterer elements of various sizes in a cooperative relationship with one another provide for diffusing acoustic waves in a room (14).
    Type: Application
    Filed: April 14, 2006
    Publication date: July 10, 2008
    Inventor: Douglas P. Magyari