Sound Absorbing Fence Or Screen (e.g., Jet Engine Or Vehicle Noise) Patents (Class 181/210)
  • Patent number: 10902834
    Abstract: A sandwich acoustic liner assembly includes a honeycomb core and a thermoplastic fabric sheet positioned in overlying relationship and structurally bonded with the honeycomb core. Further included is a method for fabricating a sandwich acoustic liner assembly which includes the steps of positioning a thermoplastic fabric sheet in overlying relationship with a honeycomb core and bonding structurally the thermoplastic fabric sheet to the honeycomb core.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: January 26, 2021
    Assignee: THE BOEING COMPANY
    Inventors: Holly J. Thomas, Arnold J. Lauder, Marta B. Elleby, Stefan Ozog
  • Patent number: 10822865
    Abstract: A noise reduction door related to a noise reduction device in order to resolve a problem that the noise reduction door cannot meet a requirement for different noise reduction effects and different air duct resistance. The noise reduction door includes a T-shaped mechanical part, two fan-shaped mechanical parts, and a door plate. The T-shaped mechanical part and the fan-shaped mechanical part are connected to the door plate using a detachable connection mechanical part. The T-shaped mechanical part is located on a central axis of the door plate, and the two fan-shaped mechanical parts are respectively located on two sides of the T-shaped mechanical part. Therefore, the fan-shaped mechanical part on the door plate may be changed to have different installation positions and installation manners in order to obtain noise reduction doors in different forms. The embodiments of the present disclosure are applied in cabinet noise reduction.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: November 3, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yaofeng Peng, Zhixin Li, Changye Jia, Shengmei Wu, Rong Chen
  • Patent number: 10800352
    Abstract: The invention relates to an acoustic component contoured in a planar manner or three-dimensionally shaped, namely a firewall of a motor vehicle, and use of said component, said component comprising at least one sound-absorbing material and possibly at least one carrier material, wherein the sound-absorbing material is completely or partially covered by a flow layer at least on a planar side or in a composite of layers, wherein the flow layer has nanofibers.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: October 13, 2020
    Assignee: Adler Pelzer Holding GMBH
    Inventors: Norbert Nicolai, Volkmar Schulze, Marco Schneider, Rod Morris-Kirby
  • Patent number: 10781606
    Abstract: A plurality of base units is loaded onto a plurality of trailers. The plurality of trailers is coupled to a plurality of trucks. The plurality of trucks is transported to a construction site. The plurality of base units is unloaded from the plurality of trailers and placed at the construction site to form a wall.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 22, 2020
    Assignee: The Modern Group, Ltd.
    Inventors: Gary R. Markham, Will Block Crenshaw
  • Patent number: 10774788
    Abstract: A gas turbine engine includes an engine core includes at least one compressor, a combustor downstream of the compressor, and at least one turbine downstream of the combustor. A primary flowpath fluidly connects each of the compressor, the combustor, and the turbine. At least one particle extraction duct has an extraction duct inlet connected to the primary flowpath fore of the compressor and an extraction duct outlet connected to a bypass flowpath.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: September 15, 2020
    Assignee: Raytheon Technologies Corporation
    Inventor: Matthew R. Feulner
  • Patent number: 10730454
    Abstract: A vehicle NVH pad includes an outer pad, a support pad connected to the outer pad, and one or more inner pads pivotally connected to opposite sides of the support pad. The one or more inner pads may include a first inner pad pivotally connected to one side of the support pad through a first hinge connection and a second inner pad pivotally connected to an opposite side of the support pad through a second hinge connection.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 4, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Won Jung Song, Hyun Kyung Park
  • Patent number: 10612564
    Abstract: An aircraft engine includes a rotating structure and a casing circumferentially surrounding the rotating structure. The aircraft engine further includes an acoustic panel for noise reduction circumferentially surrounding the rotating structure and disposed adjacent the casing. The acoustic panel comprises a plurality of acoustic panel members arranged adjacent to one another to form a substantially complete ring of the acoustic panel. A first acoustic panel member of the plurality of acoustic members is adjacent to a second acoustic panel member of the plurality of acoustic members. The first acoustic panel member is removably secured to the second acoustic panel member by a releasable fastening assembly.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 7, 2020
    Assignee: Rolls-Royce Corporation
    Inventors: Robert W. Heeter, Jonathan Rivers, Dennes Kyle Burney
  • Patent number: 10525905
    Abstract: The present invention discloses a silencer for automobile. The silencer is formed by press molding. The silencer has a first molded surface and a second molded surface which are opposite to each other in a thickness direction. The silencer at least includes a first fiber layer on which the first molded surface is formed and a second fiber layer integrated with an opposite surface to the first molded surface, the opposite surface being on the first fiber layer. Fibers of the second fiber layer exist partly on the opposite surface on the first fiber layer.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: January 7, 2020
    Assignee: HAYASHI TELEMPU CORPORATION
    Inventors: Shuzo Iwata, Arata Tajima, Takahiko Taniguchi, Junpei Shimomura, Kazuya Kusama
  • Patent number: 10422150
    Abstract: An alignment plate for mounting of a structure to a foundation includes: a generally planar main body having a center, a length direction and a width direction that is perpendicular to the length direction; and a plurality of first mounting slots in the main body and a plurality of second mounting slots in the main body, wherein the first mounting slots extend in the length direction and the second mounting slots extend in the width direction.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: September 24, 2019
    Assignee: CommScope Technologies LLC
    Inventor: Dino R. Roy
  • Patent number: 10294960
    Abstract: An ice liner assembly for a fan containment case for a turbofan gas turbine engine is disclosed. The disclosed ice liner assembly includes a plurality of arcuate panels arranged end to end to form a cylindrical liner that is disposed within the fan containment case and aft of the fan and abradable strip liner that circumscribes the fan. Because the plurality of arcuate panels are arranged end to end fashion, the ice liner assembly includes a plurality of splice joints, or a joint between two abutting ends of two arcuate panels. The splice joints are reinforced with molded polymeric splice support cores that are substantially lighter and less expensive than currently employed high density aluminum honeycomb core materials.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: May 21, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Thomas J. Robertson, Steven Clarkson
  • Patent number: 10259402
    Abstract: Disclosed herein is a technique for further improving the quietness in a vehicle cabin while reducing an increase in the weight of a motor vehicle. A noise reduction member, arranged in a fender inner space defined between a fender panel serving as an exterior panel for a motor vehicle and an inner fender forming a wheelhouse, includes a pair of wall portions which are made of a foamed material and arranged to be spaced apart from each other.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: April 16, 2019
    Assignee: NISHIKAWA RUBBER CO., LTD.
    Inventors: Nobukazu Onishi, Yoshihiro Kohara
  • Patent number: 10221773
    Abstract: A gas turbine engine includes a casing surrounding a first compressor, as well as a liner extending forward from the first compressor. Additionally, the gas turbine engine includes a bleed air assembly having a plurality of bleed valves positioned in the liner and spaced along a circumferential direction of the gas turbine engine. The bleed air assembly also includes a duct in airflow communication with the plurality of bleed valves and defining an outlet at the casing. The duct provides a flow bleed air from the plurality bleed valves to the outlet during operation.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: March 5, 2019
    Assignee: General Electric Company
    Inventors: Thomas Ory Moniz, Joseph George Rose, Patrick Sean Sage, Jeffrey Donald Clements, Jeffrey Glover
  • Patent number: 10032444
    Abstract: A resonator absorber with adjustable acoustic characteristics made in the form of a cuboid with sidewalls and with an open upper face that is covered by two identical movable perforated plates to allow partial overlapping of the the plates. Each plate is equipped with bores forming a planar binary amplitude diffusor by using a maximum length pseudorandom binary sequence mapped to 2D space to determine the bore position. Bores are arranged in rows which do not overlap between plates. The resonator absorber has six cavities of different geometry situated below the perforated plates, where five cavities simultaneously change the volume with movement of the perforated plates. The resonator absorber is useful for tuning the acoustic characteristics of the environment.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: July 24, 2018
    Assignee: SVEUCILISTE U ZAGREBU FAKULTET ELEKTROTEHNIKE I RACUNARSTVA
    Inventors: Kristian Jambrosic, Ivan Vican, Hrvoje Domitrovic
  • Patent number: 9915066
    Abstract: A sound absorbing panel is provided above an uppermost of soundproof panels arranged in plural stages in a vertical direction and each having a back surface opposite to a sound source side, the back surface being formed to be a sound insulating surface, the sound absorbing panel including: an outer frame body having therein an acoustic space in which a first acoustic material is provided, the outer frame body allowing formation of a partition wall separating a sound source and a surrounding area from each other, the outer frame body having, at a front and back portions thereof, sound transmitting surfaces each having multiple sound through holes allowing transfer of sound between the acoustic space and outside thereof; and a second acoustic material provided above an upper end of the outer frame body such that a peripheral surface of the second acoustic material except for a corner portion is air-permeable.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: March 13, 2018
    Assignee: NIPPON SHEET GLASS ENVIRONMENT AMENITY CO., LTD.
    Inventors: Yasushi Hoshino, Masakazu Kiyama, Shimpei Yatsunami, Junichi Fukito
  • Patent number: 9909269
    Abstract: Diffractor for diffracting sound of traffic on a travel surface with at least one diffraction plate disposed laterally beside the travel surface. The diffraction plate is provided with a pattern of recesses in the upper surface thereof for the purpose of diffracting the traffic noise in a direction which differs from the lateral direction. Each of the recesses is divided into individual resonators by intermediate walls provided in the recesses. The recesses have acoustically substantially non-absorbing walls and are free of acoustically absorbing material. The intermediate walls between adjacent resonators have at least one throughflow opening along which the rainwater can flow from the one resonator to the other.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: March 6, 2018
    Assignee: 4SILENCE B.V.
    Inventor: Ysbrand Hans Wijnant
  • Patent number: 9855902
    Abstract: A multi-layered noise absorbing and insulating material includes a noise insulation material having opposing first and second major surfaces. The noise insulation material includes an adhesive resin including an air permeability-forming material. A first noise absorption material is adhered to the first major surface of the noise insulation material. A second noise absorption material is adhered to the second major surface of the noise insulation material. The multi-layered noise insulation absorbing and insulating material has air-permeability.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: January 2, 2018
    Assignees: HYUNDAI MOTOR COMPANY, IKSUNG CO., LTD.
    Inventors: Min Su Kim, Jae Chan Lim, Ki Wook Yang, Kue Seok Kang, Bong Jik Lee
  • Patent number: 9797271
    Abstract: An assembly is provided for a turbine engine with an axial centerline. This turbine engine assembly includes an outer nacelle and an inner nacelle with a bypass flowpath radially therebetween. The inner nacelle includes a nacelle wall and at least one access panel, which is adapted to at least partially cover an aperture in the nacelle wall. The outer nacelle axially overlaps the access panel.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 24, 2017
    Assignee: Rohr, Inc.
    Inventor: Keith T. Brown
  • Patent number: 9732477
    Abstract: An apparatus for controlling airborne pollution comprises a leeward wall located near a polluted region, and a windward wall located between the leeward wall and the polluted region. The leeward wall and the windward wall are spaced apart so as to define an airflow passageway therebetween. The windward wall extends upwardly to a first wall height. The leeward wall includes an upper portion extending above the first wall height. The upper portion is adapted to direct airflow downward through the airflow passageway towards at least one opening located below the first wall height for exhausting the airflow from the airflow passageway.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: August 15, 2017
    Assignee: Envision SQ Inc.
    Inventors: Scott Shayko, Xin Qui, Jason Slusarczyk, William Van Heyst, Shohel Mahmud, William Lubitz, Jennifer Spencer
  • Patent number: 9624662
    Abstract: A noise-cancelling wall is described that includes a height, a width, a depth, and first and second portions. The first portion has a first characteristic acoustic wavelength and a first thickness along the depth, and the second portion has a second characteristic acoustic wavelength and a second thickness along the depth. A relationship between the first and second portions is such that twice a difference between a ratio of the first characteristic acoustic wavelength to the first thickness, and a ratio of the second characteristic acoustic wavelength to the second thickness ranges from 0.25 above an odd integer to 0.25 below the odd integer. The first portion causes an acoustic phase shift of sound waves passing through the first portion relative to sound waves passing through the second portion, and the phase shift results in destructive acoustic interference between sound waves traveling through the wall.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: April 18, 2017
    Inventors: David R. Hall, Joe Fox, Jedediah Knight, Kevin Cheatham
  • Patent number: 9604438
    Abstract: An acoustic liner includes a first core that has a plurality of first core cells defined by a corresponding plurality of first core cell walls. The first core has a first core thickness. The acoustic liner also includes a second core that has a plurality of second core cells defined by a corresponding plurality of second core cell walls. The second core has a second core thickness, and the first core thickness and the second core thickness are unequal. The acoustic liner further includes a second fabric sheet coupled between the first core and the second core. Each of the plurality of second core cell walls generally is not coplanar with any of the plurality of first core cell walls.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: March 28, 2017
    Assignee: The Boeing Company
    Inventors: Alex C. Lumbab, Bradley Scott Leisten
  • Patent number: 9607599
    Abstract: A particulate sound absorption board used for sound absorption surface layer of sound absorption/insulation board is a micropore particle board formed by splicing skeleton particles and filling particles which are covered with binding agent on the surface and have small angularity coefficient. The particulate sound insulation board used for sound insulation surface layer of sound absorption/insulation board is a compressed board formed by closely splicing skeleton particles, filling particles, binding agent and coupling agent, and there is a resonance sound absorption cavity that functions together with sound absorption surface layer in the board body. The particulate sound barrier consists of column and more than two overlapped sound absorption/insulation boards fixed between adjacent columns. A convex-concave joint end face is set on the sound absorption/insulation board, and the sealing cushion is bound between adjacent end faces.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: March 28, 2017
    Assignee: SICHUAN ZISEN ACOUSTICS TECHNICAL CO., LTD.
    Inventors: Weixin Qian, Jiashu Shen
  • Patent number: 9587649
    Abstract: Noise generated by a hydraulic fracturing system is abated by locating noise reduction equipment at strategic locations, and also by routing inlet and exit air along designated paths. Noise insulation panels are disposed around trailer mounted machinery to attenuate and redirect the noise generated by the machinery. The panels extend a distance above the machinery so that the noise is directed upward and away from operations personnel proximate the machinery. Air handling equipment having air inlets and exits that are formed to reduce turbulence, and thus noise, as well as redirect the flow of air to attenuate noise generated by its flow within the inlets and exits.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: March 7, 2017
    Assignee: US WELL SERVICES LLC
    Inventor: Jared Oehring
  • Patent number: 9538267
    Abstract: A sound protection component includes an absorber element and a reflection element, the absorber element being of self-supporting design.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: January 3, 2017
    Assignee: KIRCHDORFER FERTIGTEILHOLDING GMBH
    Inventor: Alexander Barnas
  • Patent number: 9227577
    Abstract: Provided is an acoustic insulation device for a mobile vehicle in which sound transmitted to the exterior of the vehicle body is blocked by being reflected or diffracted by acoustic insulation bodies provided upright to the vehicle body; and the amount of noise that an observer or local residents are subjected to is further reduced. Movement of a mobile vehicle generates noise in, and in the vicinity of, a power collector or a similar device provided upright on the roof (3) of the vehicle. Acoustic insulation bodies (1L), (2L), (1R), (2R) are provided upright on the roof (3), and block noise travelling directly ahead. The noise is diffracted or reflected by the acoustic insulation bodies (1L), (2L), (1R), (2R), and moves so as to be transmitted to the vehicle exterior.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: January 5, 2016
    Assignee: East Japan Railway Company
    Inventors: Takeshi Kurita, Fumio Mizushima
  • Patent number: 8985506
    Abstract: The invention relates to an air intake for an aircraft nacelle that includes a shroud that can be mounted on the fan casing of a turbojet engine. The shroud is sized so as to define a circumferential gap relative to the casing. Punctual linking means between the shroud and the casing are discretely distributed at the periphery of the shroud.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: March 24, 2015
    Assignee: Aircelle
    Inventors: Guy Bernard Vauchel, Laurent Georges Valleroy, Stéphane Beilliard, Fabien Bravin
  • Patent number: 8955642
    Abstract: The object of the invention is a wall structure working as a noise barrier for railways, which comprises at least a plurality of wall elements placed consecutively end-to-end with each other, which wall elements are hinged by means of hinge pieces at their bottom edges for toppling downwards from their vertical position. The wall elements are disposed inside the width reach of the wagons or cargo space of a train and for toppling by means of the hinge pieces to below a wagon or a load that is lower than normal and/or is overwide. The wall structure is suited for use e.g. as a noise barrier or passage barrier for a railway.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 17, 2015
    Assignee: Soundim Oy
    Inventors: Jarmo Airaksinen, Janne Tikkamäki
  • Patent number: 8931592
    Abstract: A panel assembly that includes a first panel having an inner surface and an outer surface, and a second panel having an inner surface and an outer surface. The second panel includes a plurality of rib members formed therein that extend inwardly. The rib members include an inner surface and an outer surface. A plurality of panel portions are defined between the plurality of rib members. The panel portions include an inner surface and an outer surface. The inner surface of the rib members are secured to the inner surface of the first panel, and the inner surface of the panel portions is spaced apart from the inner surface of the first panel to define at least first and second cavities.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: January 13, 2015
    Assignee: C&D Zodiac, Inc.
    Inventors: Scott Savian, Eric Long, Jordan De Botton
  • Patent number: 8925678
    Abstract: A noise structure having a barrier made of a generally sound redirecting material defining a surface of the barrier, and a plurality of sound absorbing boxes connected to this surface, each box comprising a rear wall and an extensively perforated front wall, the walls defining a longitudinal channel at least partially occupied by a filling made of a sound absorbing material, in which the rear wall is a substantially flat plane wall assembled parallel to and spaced apart from the surface of the barrier and is in its turn extensively perforated.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: January 6, 2015
    Assignee: Urbantech S.p.A.
    Inventor: Giampaolo Tizzoni
  • Patent number: 8893851
    Abstract: A soundproofing plate includes a substrate wherein through holes are formed; and sound collecting parts, including through holes in the center, which approximately match the through holes of the substrate, the collecting parts having a shape wherein the diameter increases as the distance from the substrate increases. The sound collecting parts are disposed on both faces of the substrate. Alternatively, a soundproofing plate includes a substrate with a plurality of through holes; and attenuation elements. The attenuation elements include hollow shaft members; and sound collecting parts anchored on the end parts of the hollow shaft members. The sound collecting parts include through holes in the centers which approximately match hollow parts in the hollow shaft members; and have a shape wherein the diameter increases as the distance from the hollow shaft member increases. The hollow shaft members are disposed in the substrate to approximately match the substrate through holes.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 25, 2014
    Inventor: Yoshiharu Kitamura
  • Patent number: 8841982
    Abstract: High- or medium-voltage equipment comprising an induction-activated portion, a tank surrounding the active portion and filled with a dielectric fluid, such as oil, and passive acoustic reduction means for reducing acoustic waves coming from the active portion and propagating in the dielectric fluid. According to the invention, the passive means create an interference field that divides the propagated waves into two groups of waves of opposite phase that interfere with each other in a zone that is at a distance from the walls of the tank so as to at least limit the amplitude of the waves before they make contact with said walls. The equipment provides an effective solution for significantly reducing the noise that is propagated by the dielectric fluid medium.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: September 23, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Francois Devaux, Pascal Vouagner
  • Patent number: 8800714
    Abstract: An acoustic structure that includes a septum having an acoustic opening which defines an open area that varies in response to changes in the velocity of noise-containing media passing through the acoustic opening. The septum includes a fixed portion and one or more movable flapper portions wherein the fixed portion and/or the flapper portion(s) include surfaces that define an acoustic opening through the septum. The acoustic opening has an open area which varies due to movement of the movable flapper(s) in response to changes in velocity of the noise-containing media that passes through the acoustic opening. The resulting septum has a relatively low non-linearity factor (NLF).
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: August 12, 2014
    Assignee: Hexcel Corporation
    Inventor: Fumitaka Ichihashi
  • Patent number: 8776945
    Abstract: In one embodiment of the invention, a noise barrier is disclosed that provides noise insulation from roadway noise, construction sites, manufacturing sites, railways or the like wherein the noise barrier includes a plurality of vertical sections, with each section having a base portion with a generally inverted T configuration. The inverted T configuration includes bottom flanges designed to be mounted substantially in the ground. At least one mounting post is attached to the base portion; and a barrier member manufactured from recycled rubber materials and a binder is mounted to the mounting post. The barrier member includes a through hole for receipt of the mounting post. The through hole extends from a bottom end of the barrier member vertically up and out a top end of the barrier member.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: July 15, 2014
    Inventor: Donald Robert Zimmerman
  • Patent number: 8770343
    Abstract: A method and apparatus comprising a composite panel and a number of structures to reduce noise radiation from the composite panel. The composite panel has a first face sheet, a second face sheet, and a core located between the first face sheet and the second face sheet. The number of structures is associated with the first face sheet. The number of structures has a mass with a configuration to reduce a speed of waves propagating in the composite panel such that noise radiating from the composite panel is reduced.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: July 8, 2014
    Assignee: The Boeing Company
    Inventors: Gopal Prasad Mathur, Cliff L. Chin
  • Patent number: 8763753
    Abstract: A disclosed embodiment provides an acoustic panel having a composite laminate panel having a back sheet layer, a face sheet layer, and a core layer disposed therebetween. The core layer has one or more depressions at an interface between the core layer and the face sheet layer, with the face sheet having a generally uniform thickness across the composite laminate panel. A hole extends through the composite laminate panel at the depressions, and a bolt assembly extends through the hole such that it is countersunk.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 1, 2014
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Seth Alexander McDonald, Benjamin Roby
  • Patent number: 8758101
    Abstract: An improved exhaust fan housing, and exhaust fan assembly so characterized, is generally provided. The exhaust fan housing includes a first cylindrical or conical element, a second cylindrical element interior of the first cylindrical element, and a plurality of hollow vanes traversing an annular fluid passage chamber delimited thereby and uniting the first and second cylindrical elements. A central drive chamber, delimited by the second cylindrical element, is in fluid communication with ambient air exterior of the first cylindrical element via the hollow vanes. Each hollow vane is characterized by spaced apart wall segments which unitingly terminate so as to delimit a leading edge for each hollow vane, each of the spaced apart wall segments having a free end or a closed end delimiting first and second trailing edges for the hollow vanes.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: June 24, 2014
    Assignee: Twin City Fan Companies, Ltd.
    Inventors: Daniel Khalitov, Andrew W. McClure
  • Publication number: 20140124288
    Abstract: A fence (1) comprising a series of fence parts comprising a first and second pole (4,5,40,43,45) and a first and second opposing wall (2,3) extending between the first and second pole (4,5,40,43,45), thereby defining an interior space (9) for containing a sound suppressing material. The walls (2,3) comprises at least one profile (6,22-24,33-36) having opposing free ends (7,8) for engaging the first and second pole (4,5,40,43,45). Each profile (6,22-24,33-36) has a first section (10,25-27) facing a free end of the poles (4,5,40,43,45), the first section (10,25-27) extends into a second section (11,28-30) that is closer to the interior space (9) than the first section (10,25-27), each pole (4,5,40,43,45) comprises at least one assembling track (16) extending along the length of the pole (4,5,40,43,45), and the at least one assembling track (16) is configured to accommodate at least a part of the free (7,8) end of the profiles (6,22-24,33-36).
    Type: Application
    Filed: August 5, 2011
    Publication date: May 8, 2014
    Inventor: Kenn Hertzman Jørgensen
  • Patent number: 8714304
    Abstract: 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.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: May 6, 2014
    Inventor: Yoshiharu Kitamura
  • Patent number: 8689935
    Abstract: Air bubbles may be used to reduce radiated underwater noise. Two modalities of sound attenuation by air bubbles were shown to provide a reduction in radiated sound: bubble acoustic resonance damping and acoustic impedance mismatching. The bubbles used for acoustic resonance damping were manifested using gas-filled containers coupled to a support, and the acoustic impedance mismatching bubbles were created using a cloud of freely-rising bubbles, which were both used to surround an underwater sound source.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: April 8, 2014
    Assignee: Board of Regents of the University of Texas System
    Inventors: Preston S. Wilson, Kevin M. Lee, Mark S. Wochner
  • Patent number: 8684133
    Abstract: 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.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: April 1, 2014
    Assignee: MAN Truck & Bus AG
    Inventor: Claus Vogel
  • Patent number: 8651232
    Abstract: Transparent panel of acrylic glass (PMMA) having internal reinforcement elements for securing fragments of the acrylic glass formed upon an impact with a foreign body. The reinforcement elements are embedded interspersed within the panel and spaced apart in parallel longitudinally. The reinforcement elements include rigid cables and elastic cables. The rigid cables are formed of a metal having an ultimate tensile strength of at least 500 MPa. The elastic cables are formed of a metal having a percentage elongation (engineering strain at fracture) of at least 30%, preferably between 40% and 80%. The rigid cables and elastic cables may be separate and spaced apart from one another, or intertwined with each other. The panels may be used to form an acoustic barrier.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 18, 2014
    Assignee: Plazit Iberica Plastic Solutions, S.A.
    Inventors: Ehud Kedar, Joaquin Aliu Agullo, Mariona Mata Molinet
  • Publication number: 20140014436
    Abstract: An air inlet grille for an appliance onboard an aircraft includes a screen having an inside-facing surface and an outside-facing surface, a plurality of airflow openings formed within the screen between the inside-facing surface and the outside-facing surface, and a plurality of tubes disposed on the inside-facing surface of the screen where openings on one end of the plurality of tubes are aligned with the plurality of airflow openings. A length of the plurality of tubes is at least twice a diameter of the plurality of airflow openings with which the plurality of tubes is aligned.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: William H. Nguyen, Vandaud M. Imani, William Godecker
  • Patent number: 8607925
    Abstract: A wedge-shaped, number theoretical acoustic diffuser both diffuses and reflects sound while eliminating wasted space created by prior art. The inventive diffuser consists of wells of continuously variable depths which provide wide-bandwidth diffusion in a single dimension. The back of the wells are reflective planes of a plurality of angles that direct energy away from the sound source. The invention may be installed in the upper corners of a room, with the deepest end of the wedge-shape up and tapering down to the thinnest end of the wedge shape. This installation allows floor standing furniture or other objects to be placed against the wall, an impossibility with the installation of prior art. The present invention may be installed as an array in which the deepest ends of the wedge shape are butted together. This formation splits and reflects sound in two different directions both away from the sound source.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: December 17, 2013
    Inventor: Hendrik David Gideonse
  • Patent number: 8602156
    Abstract: A liner assembly for an aircraft engine housing includes a noise attenuation structure that is covered by a face sheet. The face sheet covering the noise attenuation structure includes a surface having a plurality of circumferentially spaced apart acoustic energy absorption areas that are interspersed between a corresponding plurality of acoustic energy reflective areas. The acoustic energy reflective areas scatter higher order acoustic modes into a plurality of lower order modes. The difficult to attenuate lower order acoustic modes produced by the various acoustic energy cancel each other out to provide significant improvement in liner noise reduction efficiency.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: December 10, 2013
    Assignee: United Technologies Corporation
    Inventors: Amr Ali, Yuan J. Qiu
  • Patent number: 8590668
    Abstract: A construction machine capable of effectively reducing noise which would intrude into a cab, without deterioration in ride quality, comfort and air-conditioning efficiency in the cab is provided. The construction machine includes a lower propelling body, an upper slewing body including an upper frame, a cab including a floor plate and installed on the upper frame, and a cab noise reduction device. The cab noise reduction device includes: the floor plate; an under-cab member including a cab deck supporting the cab and provided under the cab to define a closed-form under-cab space whose periphery is substantially closed, in cooperation with the floor plate; and a resonator reducing noise in the under-cab space by a resonance effect.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: November 26, 2013
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Kobelco Construction Machinery Co., Ltd.
    Inventors: Kyoko Masuda, Yasumasa Kimura, Kazuhiro Ueda
  • Patent number: 8579076
    Abstract: Honeycomb sections are bonded together with seams made up of an adhesive that is carried by a honeycomb seam support or a linked-segment seam support. The seams are particularly useful for splicing together curved honeycomb sections that contain acoustic septum. The curved acoustic honeycomb sections are spliced or seamed together to form engine nacelles and other acoustic dampening structures.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 12, 2013
    Assignee: Hexcel Corporation
    Inventors: Earl Ayle, Rickey L. Burchett
  • Patent number: 8567558
    Abstract: A partition panel improves sound insulation performance and optimizes a reverberation time. The partition panel has sound absorption and insulation functions, and has a front plate having a perforated section with a plurality of through-holes and an entirely-continuous peripheral edge portion located outside the perforated section. An entirely-continuous back plate is disposed on a side opposite to a sound source across the front plate. An inner perforated plate is disposed between the perforated section of the front plate and the back plate. A front-side honeycomb core is interposed between the perforated section and the inner perforated plate, a back-side honeycomb core is interposed between the back plate and the inner perforated plate and a peripheral honeycomb core is interposed between the peripheral edge portion of the front plate and a region of the back plate opposed to the peripheral edge portion.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: October 29, 2013
    Assignee: Shinko Kenzai Ltd.
    Inventors: Shinichi Nakajima, Takahiro Yamada, Masaji Horio, Haruo Tabuchi, Kanji Yokoe
  • Patent number: 8556026
    Abstract: A noise-emitting industrial plant is provided, which is enclosed by a personnel-accessible noise attenuation hood for damping noise which issues from the plant. The noise attenuation hood includes a horizontal working platform which is provided for maintenance operations and/or repair work. The working platform is arranged at the noise attenuation hood in a foldout manner.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 15, 2013
    Assignee: Alstom Technology Ltd
    Inventors: Walter Umbricht, Anke Vietgen-Zeidler
  • Patent number: 8544596
    Abstract: The invention provides an enclosure, in particular, an acoustic enclosure, for thermal equipment, for example a gas turbine or a gas turbine auxiliary module. The invention also provides a method of constructing such an enclosure.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: October 1, 2013
    Assignee: GE Energy Products France SNC
    Inventor: Denis Dupont
  • Patent number: 8544601
    Abstract: A sound-absorbing noise barrier, more specifically to one comprising: a main body which has a front surface and a rear surface and extends horizontally and in which a space is formed between the front surface and the rear surface; and a sound-absorbing material which is accommodated in the space of the main body and is disposed at a distance away from the front surface and the rear surface respectively, wherein the front surface of the main body is formed with vertically oriented alternating projections and recesses and is formed with a plurality of sound-absorbing holes, and the overall cross-sectional area of the sound-absorbing holes is at least 20% of the cross-sectional area of the front surface. The sound-absorbing noise barrier of the present invention can be variously employed in construction and industrial products, has good sound-absorbing characteristics across a wide frequency range, and can present an aesthetically appealing external effect.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: October 1, 2013
    Assignee: LG Hausys, Ltd.
    Inventors: Kyoung Myoung Chae, Kangwoo Kim, Dongjin Kim, Jae-Youl Joung, Yunhwan Hwang
  • Publication number: 20130199868
    Abstract: Sound absorbing walls include a planar front panel element formed of an acoustically transmissive material and having a peripheral edge, a planar inner panel element formed of an acoustically absorbent material, having a peripheral edge, a front face abutting the front panel, and an opposed rear face, and a rigid frame having a panel portion overlaying the rear face of the inner panel element, and having a peripheral edge, and an edge portion forming a rim depending from the peripheral edge of the frame, and enclosing the peripheral edges of the front panel and inner panel. The frame may encapsulate the front panel and inner panel, except for an exposed front panel front surface. The rim may extend forward of the front panel. A sound wall may be constructed by connecting edge portions of one or more panels to spaced apart first and second ground-mounted vertical support columns.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 8, 2013
    Inventor: William Lee Bergiadis