GB1242864A - Acoustical elements - Google Patents

Acoustical elements

Info

Publication number
GB1242864A
GB1242864A GB2302768A GB2302768A GB1242864A GB 1242864 A GB1242864 A GB 1242864A GB 2302768 A GB2302768 A GB 2302768A GB 2302768 A GB2302768 A GB 2302768A GB 1242864 A GB1242864 A GB 1242864A
Authority
GB
United Kingdom
Prior art keywords
metal
underlayer
layers
porous
foam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2302768A
Inventor
William Arthur Gurney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dunlop Holdings Ltd
Original Assignee
Dunlop Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dunlop Holdings Ltd filed Critical Dunlop Holdings Ltd
Priority to GB2302768A priority Critical patent/GB1242864A/en
Priority to FR6915411A priority patent/FR2008567A1/fr
Priority to DE19691924734 priority patent/DE1924734A1/en
Publication of GB1242864A publication Critical patent/GB1242864A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/0336—Noise absorbers by means of sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)

Abstract

1,242,864. Porous metal laminates. DUNLOP HOLDINGS Ltd. 13 May, 1969 [15 May, 1968], No. 23027/68. Heading B5N. [Also in Divisions B3, C7 and F2] An acoustic element comprises at least one surface layer including a plurality of apertures and at least one underlayer in the form of a three-dimensional network of intercommunicating cells and made substantially of metal. The underlayer may be made by spraying, dipping or electrodepositing metal, e.g. Ag, Cu, Fe, Ni and alloys on to a porous substrate, e.g. felt, sponge or foam, particularly a reticulated polyurethane foam. The substrate may then be removed by heating. The surface layer may be a woven or meshed plastics or metal material, or an open-cell construction, and should have a lower porosity than the underlayer. The layers may be separated by other porous layers or may be directly bonded. Bonding may be by adhesive or by welding. In one example, two foam layers of different porosities are superposed and made integral by depositing metal thereon, and are used as acoustic elements for covering silencers and jet engine exhausts.
GB2302768A 1968-05-15 1968-05-15 Acoustical elements Expired GB1242864A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2302768A GB1242864A (en) 1968-05-15 1968-05-15 Acoustical elements
FR6915411A FR2008567A1 (en) 1968-05-15 1969-05-13
DE19691924734 DE1924734A1 (en) 1968-05-15 1969-05-14 Soundproofing element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2302768A GB1242864A (en) 1968-05-15 1968-05-15 Acoustical elements

Publications (1)

Publication Number Publication Date
GB1242864A true GB1242864A (en) 1971-08-18

Family

ID=10188938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2302768A Expired GB1242864A (en) 1968-05-15 1968-05-15 Acoustical elements

Country Status (3)

Country Link
DE (1) DE1924734A1 (en)
FR (1) FR2008567A1 (en)
GB (1) GB1242864A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414081A1 (en) * 1978-01-09 1979-08-03 Uop Inc Porous nucleate boiling surface for heat transfer tubes - comprises plated layer of organic foam material with graphite coating
US4526826A (en) * 1983-06-08 1985-07-02 Kennecott Corporation Foam semiconductor dopant carriers
WO1991005376A1 (en) * 1989-10-02 1991-04-18 General Atomics Bulk rf absorber apparatus and method
GB2252077A (en) * 1991-01-22 1992-07-29 Short Brothers Plc Noise attenuation panel
US5202688A (en) * 1989-10-02 1993-04-13 Brunswick Corporation Bulk RF absorber apparatus and method
US6309742B1 (en) 2000-01-28 2001-10-30 Gore Enterprise Holdings, Inc. EMI/RFI shielding gasket
WO2005061855A1 (en) * 2003-12-20 2005-07-07 Mtu Aero Engines Gmbh Gas turbine component
WO2007054354A1 (en) * 2005-11-11 2007-05-18 Orbiter Gears Marketing & Finance Ag Drive unit
DE102008060234A1 (en) * 2008-12-04 2010-06-10 Mann + Hummel Gmbh Fluid line for guiding e.g. diesel utilized for operating internal-combustion engine of mobile motor vehicle, has inner pipe that is made of plastic, and outer layer that is made of metal foam such as aluminum foam
US20190120414A1 (en) * 2017-10-23 2019-04-25 Hamilton Sundstrand Corporation Duct assembly having internal noise reduction features, thermal insulation and leak detection

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1496163A (en) * 1974-08-16 1977-12-30 Foseco Int Burner quarls
GB1552922A (en) * 1975-10-31 1979-09-19 Chem Fab Corp Acoustic absorber and method for absorbing sound
DE2617000B2 (en) * 1976-04-17 1981-04-02 Grünzweig + Hartmann Montage GmbH, 6700 Ludwigshafen Backdrops air silencer
DE3220023C2 (en) * 1982-05-27 1993-05-27 Cellofoam Deutschland Gmbh, 7950 Biberach Sound-absorbing flow channel and method for its manufacture
JPH0370932A (en) * 1989-08-08 1991-03-26 Mitsubishi Electric Home Appliance Co Ltd Muffler
DE4103895A1 (en) * 1991-02-08 1992-08-13 Fraunhofer Ges Forschung SOUND INSULATION FOR CONTAINERS, APPARATUS AND PIPELINES
DE102010040249A1 (en) * 2010-09-03 2012-03-08 Man Diesel & Turbo Se Double walled pipe
CN107448722A (en) * 2017-08-31 2017-12-08 安徽大地环保科技有限公司 A kind of screw-type hush pipe
CN107588250A (en) * 2017-08-31 2018-01-16 安徽大地环保科技有限公司 A kind of multilayer silencing pipeline
CN110395378B (en) * 2019-08-07 2021-06-04 浙江海洋大学 Be applied to high-efficient ventilation structure subassembly of ships and light boats
CN115930001A (en) * 2022-11-02 2023-04-07 中国船舶重工集团公司第七一九研究所 Blade type metamaterial pipeline for vibration and noise reduction

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414081A1 (en) * 1978-01-09 1979-08-03 Uop Inc Porous nucleate boiling surface for heat transfer tubes - comprises plated layer of organic foam material with graphite coating
US4526826A (en) * 1983-06-08 1985-07-02 Kennecott Corporation Foam semiconductor dopant carriers
US5202688A (en) * 1989-10-02 1993-04-13 Brunswick Corporation Bulk RF absorber apparatus and method
WO1991005376A1 (en) * 1989-10-02 1991-04-18 General Atomics Bulk rf absorber apparatus and method
US5125992A (en) * 1989-10-02 1992-06-30 Brunswick Corp. Bulk rf absorber apparatus and method of making same
GB2252077B (en) * 1991-01-22 1994-11-02 Short Brothers Plc Noise attenuation panel
GB2252077A (en) * 1991-01-22 1992-07-29 Short Brothers Plc Noise attenuation panel
US6309742B1 (en) 2000-01-28 2001-10-30 Gore Enterprise Holdings, Inc. EMI/RFI shielding gasket
WO2005061855A1 (en) * 2003-12-20 2005-07-07 Mtu Aero Engines Gmbh Gas turbine component
US7775766B2 (en) 2003-12-20 2010-08-17 Mtu Aero Engines Gmbh Gas turbine component
WO2007054354A1 (en) * 2005-11-11 2007-05-18 Orbiter Gears Marketing & Finance Ag Drive unit
DE102008060234A1 (en) * 2008-12-04 2010-06-10 Mann + Hummel Gmbh Fluid line for guiding e.g. diesel utilized for operating internal-combustion engine of mobile motor vehicle, has inner pipe that is made of plastic, and outer layer that is made of metal foam such as aluminum foam
US20190120414A1 (en) * 2017-10-23 2019-04-25 Hamilton Sundstrand Corporation Duct assembly having internal noise reduction features, thermal insulation and leak detection

Also Published As

Publication number Publication date
DE1924734A1 (en) 1969-11-27
FR2008567A1 (en) 1970-01-23

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