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WO1998039767A1 - Procede de production de panneau ou de surface d'isolation acoustique pour interieurs - Google Patents

Procede de production de panneau ou de surface d'isolation acoustique pour interieurs Download PDF

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Publication number
WO1998039767A1
WO1998039767A1 PCT/IB1998/000233 IB9800233W WO9839767A1 WO 1998039767 A1 WO1998039767 A1 WO 1998039767A1 IB 9800233 W IB9800233 W IB 9800233W WO 9839767 A1 WO9839767 A1 WO 9839767A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
lengthwise
concavities
panels
strips
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.)
Ceased
Application number
PCT/IB1998/000233
Other languages
English (en)
Inventor
Oscar Avian
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.)
Individual
Original Assignee
Individual
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
Priority claimed from IT97UD000045 external-priority patent/IT1290731B1/it
Priority claimed from IT97UD000135 external-priority patent/IT1295726B1/it
Application filed by Individual filed Critical Individual
Priority to EP98903220A priority Critical patent/EP0965122B1/fr
Priority to AT98903220T priority patent/ATE228702T1/de
Priority to DE69809715T priority patent/DE69809715D1/de
Priority to AU60032/98A priority patent/AU6003298A/en
Publication of WO1998039767A1 publication Critical patent/WO1998039767A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/849—Groove or slot type openings

Definitions

  • sound-proofing panels which are made of wood, either solid wood or made of adjacent layers of fibres and/or compressed composite material.
  • One particular solution known to the state of the art and particularly appreciated by users provides to make sound- proofing panels including an inner core of composite material with a wood base, such as for example hardboard or MDF, lined at least on the visible face by a layer of covering and/or enhancing material.
  • the inner core of panels has a plurality of lengthwise holes of a substantially circular section, advantageously separated at an equal distance, which extend for the entire length or height of the panel.
  • These through holes which define cavities of the appropriate volume inside the panel, communicate with the face of the panel which faces towards the room where the noise is generated by means of a plurality of slits which extend for a substantial part of the length of the panel.
  • These cavities therefore act as resonators and are able to dissipate any acoustic energy in the region of the respective frequency of resonance; therefore, the noise absorption has a very sharp peak centred on this frequency, and the noise absorption is much less on other frequencies.
  • the frequency of resonance depends on the volume of the cavity and the area of section of the slits which connect the cavity inside the space wherein the noise is generated.
  • the frequency of the slits determines the level of sound-proofing of the panel.
  • the sound-proofing capacity of this type of panel derives intrinsically from its structural configuration. In fact, the sound waves generated in the room are conveyed by these lengthwise slits towards the inner holes and remain trapped there, thus preventing the noise from propagating towards the outside and generating a sound- proofing effect through the successive reverberations of the sound waves inside the holes .
  • these panels are produced by means of an extrusion method which forms the finished panel with the inner lengthwise through holes already made therein.
  • the lengthwise slits are made during a subsequent step, with a variable frequency so as to achieve panels which are sub-divided into categories, each of which is characterised by a standardised value of sound-proofing.
  • This method of obtaining the sound-proofing panels - by means of extrusion - is extremely complex, and the final cost of the product is very high.
  • the final panel thus obtained has to be associated, in a subsequent step, to coverings and/or linings in such a way as to make it fire-proof and/or water- proof, which involves a further increase both in production times and also in the final cost.
  • the extrusion method itself causes an arrangement of the fibres of the core in a vertical direction which is not suitable to intercept the propagation of the sound waves efficiently .
  • Another disadvantage which limits the sound-proofing capacity of the panel thus formed is that the density of the inner core of the panel is substantially uni form for the whole transverse extension of the panel and therefore there are no variations in density to accentuate the sound- proofing capacity of the panel.
  • Another disadvantage caused by the extrusion method is that the panel thus obtained is not very versatile or adaptable to specific and particular requirements which may arise according to the different fields of use. In fact, every variation in size and/or structure of the panel involves a reconfiguration of the extrusion assembly, which requires a long time to re-adapt and causes additional costs.
  • a further disadvantage is that it is impossible for these panels to achieve an efficient sound-proofing for the whole range of frequencies to be abated because of the substantially standardised form of the lengthwise holes and the fixed length of the slits which connect them to the room wherein the noise is generated.
  • GB-A-2JD27.255 describes a sound-proofing panel equipped with cavities of different volume, each of which is pre- determined to absorb prevalently a specific sound frequency.
  • WO 85/06240 describes a sound-proofing panel consisting of two wall elements, an inner and an outer element, between which there is a means able to allow the sound waves to propagate, such as air, for example.
  • acoustic resonators substantially spherical in shape, each of which is tuned to a specific and characteristic frequency.
  • the resonators can be an integral part of one of the wall elements, or they can be suspended between the wall elements and buried in insulating material.
  • the resonators are connected to relative throats which can be glued or welded in situ.
  • This sound-proofing panel is very complex and expensive to make, and therefore it is applied only in very specific cases where a particular standard of performance is required; it cannot be used to cover extensive surfaces such as walls and ceilings of rooms.
  • this panel requires extremely complex assembly operations which lead to even greater costs.
  • the panel requires expensive finishing operations in order to be applied in the room to which it is intended.
  • the present applicant has designed, tested and embodied this invention in order to overcome the shortcomings of the state of the art which have prevented a wider use of these panels because of their high final cost and their lack of versatility and adaptability to specific requirements of the users, and also to achieve further advantages.
  • DISCLOSURE OF THE INVENTION The invention is set forth and characterised in the main claim, while the dependent claims describe variants of the idea of the main embodiment.
  • the purpose of the invention is to obtain a method to produce sound-proofing panels, surfaces or elements for interiors in general which will make it possible to obtain a higher level of sound-proofing at a much more limited cost than that obtainable with methods known to the state of the art.
  • a further purpose of the invention is to obtain a method which will considerably reduce production times and obtain finished elements with the desired and variable characteristics, both in terms of sound-proofing and in terms of size, fire-proofing, water-proofing, insulation, and with every other type of personalisation which will meet the users' specific requirements.
  • the invention provides that, in the finished state and when installed in the room for which it is applied, the sound-proofing panel or surface has the structure described above, that is to say, with inner lengthwise through holes along the whole length, or height, and with lengthwise slits of the desired frequency opening onto the front surface and connecting the holes with the room wherein the noise is generated.
  • the inner lengthwise holes are obtained by matching two semi-holes or semi-concavities.
  • the panel is obtained by coupling two panels together at the front, each one of which having a plurality of open concavities on the front of its face which are substantially semi-circular and separated transversely.
  • the faces of the panels thus worked are then joined together by their front parts, making the semi-circular concavities coincide, so as to obtain a panel with lengthwise circular through holes which extend along the whole length of the panel.
  • the sound-proofing panel or surface is obtained by lateral coupling of substantially vertical sections or strips which have the semi-circular concavities on their opposite side faces.
  • the method makes it possible to obtain either a finished panel or a series of elements which are assembled on site to make the finished element .
  • the semi-circular concavities are obtained by means of a mechanical process to remove material, for example, by milling.
  • the concavities are obtained by moulding, either hot or cold.
  • the concavities are obtained by means of rolling.
  • the concavities are obtained b y bending .
  • the half panels, or the sections or strips, are glued together.
  • the coupling is achieved by arranging the elements which are to be coupled in an adjacent position during the assembly step, and associated by clamping means, for example, by a vice.
  • the elements to be coupled are constrained together by means such as screws, nails or similar.
  • the invention makes it possible to adapt the sound-proofing panel to the specific and contingent requirements of the user, whether they be functional or aesthetic. It should be noted that the coupling and possible gluing of two half panels, or of the sections/strips, is performed on surfaces which are in themselves smooth and therefore no operational problem is posed. Moreover, the resulting single face of the panel which is visible can be enhanced, lacquered or covered in some other manner in such a way as to meet any specific requirement of the users.
  • the covering obtained is of a high quality finishing, inasmuch as the visible edges of the slits are also covered, which is not possible with panels made in a single piece at the end of an extrusion or molding process .
  • the base elements in themselves may also have fire-proof, water-proof, insulating or other characteristics, and therefore the panel requires no other subsequent processing or finishing, but is already in its finished state when it leaves the structural processing.
  • the sound-proofing characteristics can be set and personalised according to specific requirements, and also according to the frequency of the lengthwise slits as happens in the state of the art, also by acting on the size and/or conformation of the through holes which need not even be circular, or by varying the material and/or the density of the base elements .
  • One peculiarity of the embodiment wherein the vertical strips or sections are laterally coupled is that it is possible to modify at will the size and/or shape of at least one of the two concavities which form the lengthwise hole in order to obtain a desired and specific sound-proofing effect.
  • Another advantage of the invention is that the fibres of the inner core are arranged horizontally to the panel; this causes a further sound-proofing effect of the noise generated in the room.
  • the base elements, obtained by means of moulding have a greater fibre density near the outer surfaces and a lesser density inside.
  • the sound-proofing panel or surface in their finished state has a greater density on the transverse section in the proximity of the outer surfaces and the coupling zone, and a lesser density in correspondence with the bottom of the inner through holes.
  • This alternation of density further accentuates the overall sound-proofing effect of the final panel obtained.
  • the outer face of the panel is associated with a covering layer made of insulating material, possibly maintaining an air gap between the covering layer and the said outer face.
  • lengthwise slits of a variable frequency are made on the outer face of the panel, in correspondence with the lengthwise through holes.
  • Figs, la-lc show a side view of the sequence of production of the ' sound-proofing panels according to a first embodiment of the invention
  • Fig. 2 shows a variant of Fig. lc
  • Fig. 3 shows another variant of Fig. lc
  • Fig. 4 shows a section of a finished sound-proofing panel made according to the method as in Figs, la-lc
  • Fig. 5 shows an application of the panels made according to the embodiment as in Figs, la-lc to a segment of wall in a room
  • Fig. 6 shows, with a variant on Fig.
  • Fig. 5 a segment of wall made with the second embodiment according to the invention
  • Fig. 7 shows, with a variant on Fig. lc, the embodiment as per Fig. 6
  • Fig. 8 shows the base element of the wall shown in Fig. 6
  • Fig. 9 shows a variant of Fig. 8
  • Fig. 10 shows a variant of Fig. 9
  • Fig. 11 shows a panel made with a plurality of base elements as in Fig. 9.
  • the finished sound-proofing panel 10 shown in Fig. lc is made, in the first embodiment, from two half panels 110, themselves finished and identical, one of which is shown in Fig. la.
  • each of the half panels 110 On the outer face 110a of each of the half panels 110, a plurality of lengthwise through concavities 111 are made, for example by means of the mechanical removal of material; the concavities 111 are transversely separated and, in this case, semi-circular in shape. According to variants which are not shown here, in order to obtain a different sound-proofing capacity of the finished panel 10, the concavities 11 may be semi-oval, semi-rhomboid or any other desired shape.
  • the two panels 110 are then coupled, making the respective concavities 111 coincide, so as to obtain a half-worked panel 210 (Fig. lb) which has through holes 11, in this case circular in section, which extend along the whole length of the half-worked panel 210.
  • the next step provides for lengthwise slits 12 to be made on the face 10a of the panel 10 facing towards the room 15 (Fig. 5) wherein the noise is generated; the slits 12 are made in correspondence with the holes 11.
  • the frequency of the slits 12 coincides with the frequency of the holes 11, that is to say there is a slit 12 for every hole 11.
  • the slits 12 are located offset with respect to the centre of the circular hole 11, which further accentuates the sound-proofing capacity of the panel 10.
  • Fig. 2 shows a variant wherein the frequency of the slits 12 is half the frequency of the holes 11.
  • the frequency of the slits 12 can be equal to a desired submultiple of the frequency of the holes 11 so as to obtain a different sound-proofing effect which can be standardised.
  • the outer face 10b of the panel 10 is associated with a panel 13 made of insulating material, there also being included an air gap 14 between the outer face 10b and the insulating layer 13.
  • slits 112 are also made on the outer face 10b of the panel 10 which connect the outer face 10b with the lengthwise through holes 11.
  • the frequency of the slits 112 in this case, is less than that of the slits 12.
  • the panel 10 is obtained by coupling a plurality of sections or strips 310 at the sides, each of which has semi-circular concavities 211 on the side faces.
  • the semi-circular concavities 211 have a different shape so that, at the moment of lateral coupling, the lengthwise hole 11 is obtained with a substantially circular shape (Fig. 7) .
  • Each section or strip 310 has its side faces appropriately shaped so as to achieve a male-female connection with the side faces of the contiguous sections/strips 310, and also so as to define the slit 12 directly, should it be required, without needing any further processing.
  • an upper extension 310a cooperates with a limited upper segment 310b of a contiguous section/strip 310
  • the lengthened lower extension 310c cooperates with a flattened lower segment 310d of a contiguous section/strip 310 so as to achieve the slit 12.
  • the sections/strips 310 include, in opposite positions, respective attachment elements, male 16 and female 17, which during the assembly step are coupled respectively with the mating attachment elements, female 17 and male 16, of the adjacent sections/strips 310 (Fig. 11) .
  • This solution facilitates and accelerates assembly operations, and also achieves the automatic coupling of the respective concavities 211 so as to define the substantially circular holes 11.
  • the mating conformation of the sections/strips 310 makes it possible to achieve sound-proofing panels or surfaces of a desired extension quickly and with easy assembly operations, starting from elements which are already finished in themselves, and which can even be assembled on site so as to form the necessary wall.
  • This kind of coupling also makes it possible to easily obtain concavities 211 of a variable size and shape so as to obtain efficient sound-proofing effects for a wide spectrum of frequencies.
  • the embodiment shown in Fig. 9 achieves concavities 211a of a variable size and shape on the length of the relative section/strip 310, achieving in this case a sinusoidal development in such a way as to obtain a high sound-proofing effect for a wide range of frequencies, for example for the whole spectrum of the human voice.
  • the finished panel 10 since it is formed by the coupling of half panels 110 or sections/strips 310 which in themselves are already finished, intrinsically includes the desired characteristics, for example, fire-proofing, water- proofing, insulation or other, which the base elements already have. Therefore, it does not need any further linings and/or processing and/or finishing and leaves the structural processes already finished. It is also possible to choose at will the material which constitutes the half panels 110 or the sections/strips 310 which are the base elements; apart from composite, wood- based material, also plastic, light metal, expanded or synthetic material, etc., can be used.
  • a further characteristic of the finished panel 10 (Fig. 4) , if wood-based composite material is used, is that the fibres are arranged horizontally to the extension of the panel; moreover, the fibres have a density which is greater in proximity to the inner 10a and outer 10b faces and the coupling zone 10c, and lesser in the intermediate zones.
  • This characteristic derives intrinsically from the fact that the method used to obtain the basic half panels 110 or the sections/strips 310 - that is to say, moulding - gives a greater density of the fibres in proximity with the outer faces and a lesser density in the central area.
  • the alternation of the density of the fibres causes a further accentuation of the sound-proofing effect of the finished panel 10.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne un procédé de production de panneaux ou de surfaces d'isolation phonique destinés à des intérieurs, utilisé pour couvrir des murs ou des plafonds ou comme éléments de cloisonnement pour des intérieurs tels que des salles d'étude, des salles de conférence, des salles de travail, etc., les panneaux ou surfaces comprenant des trous traversant intérieurs longitudinaux (11) s'étendant sur toute la longueur du panneau, séparés transversalement et définissant des cavités de volume voulu, au moins certains des trous traversant longitudinaux (11) communiquant avec la face du panneau tournée vers la salle (15) dans laquelle le bruit est généré, par l'intermédiaire de fentes longitudinales (12) s'étendant sur au moins une partie sensible de la longueur du panneau, le panneau ou la surface d'isolation acoustique étant obtenu par couplage de plusieurs éléments de base (110, 310), lesquels comprennent des semi-concavités (111, 211) sur les faces de couplage respectives, les semi-concavités (111, 211) d'un élément de base fini (110, 310) étant couplées aux semi-cavités (111, 221) de l'autre élément de base fini, de manière à définir les trous traversants longitudinaux (11).
PCT/IB1998/000233 1997-03-07 1998-02-26 Procede de production de panneau ou de surface d'isolation acoustique pour interieurs Ceased WO1998039767A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98903220A EP0965122B1 (fr) 1997-03-07 1998-02-26 Procede de production de panneau ou de surface d'isolation acoustique pour interieurs
AT98903220T ATE228702T1 (de) 1997-03-07 1998-02-26 Verfahren zur herstellung von schalldämmenden bauplatten oder oberflächen für innenräume
DE69809715T DE69809715D1 (de) 1997-03-07 1998-02-26 Verfahren zur herstellung von schalldämmenden bauplatten oder oberflächen für innenräume
AU60032/98A AU6003298A (en) 1997-03-07 1998-02-26 Method to produce sound-proofing panels or surfaces for interiors

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITUD97A000045 1997-03-07
IT97UD000045 IT1290731B1 (it) 1997-03-07 1997-03-07 Procedimento di produzione di pannelli fonoassorbenti per ambienti
ITUD97A000135 1997-07-30
IT97UD000135 IT1295726B1 (it) 1997-07-30 1997-07-30 Procedimento di produzione di pannelli o superfici fonoassorbenti per ambienti

Publications (1)

Publication Number Publication Date
WO1998039767A1 true WO1998039767A1 (fr) 1998-09-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/000233 Ceased WO1998039767A1 (fr) 1997-03-07 1998-02-26 Procede de production de panneau ou de surface d'isolation acoustique pour interieurs

Country Status (5)

Country Link
EP (1) EP0965122B1 (fr)
AT (1) ATE228702T1 (fr)
AU (1) AU6003298A (fr)
DE (1) DE69809715D1 (fr)
WO (1) WO1998039767A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8789652B2 (en) 2009-02-06 2014-07-29 Sonobex Limited Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers
US9607600B2 (en) 2009-02-06 2017-03-28 Sonobex Limited Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12006643B2 (en) * 2020-05-27 2024-06-11 Mute Wall Systems, Inc. Sound dampening barrier wall

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840179A (en) * 1954-06-17 1958-06-24 Miguel C Junger Sound-absorbing panels
GB822954A (en) * 1956-02-18 1959-11-04 Gomma Antivibranti Applic Improvements in sound insulating and absorbing panels
GB2027255A (en) * 1978-07-25 1980-02-13 Weltin W E Sound absorbing means
GB2104568A (en) * 1981-08-20 1983-03-09 Prefabricate Din Beton Granitu Prefabricated sound-absorbent element
WO1985002640A1 (fr) * 1983-12-12 1985-06-20 Lockheed Corporation Barriere anti-bruit
JPH06129029A (ja) * 1992-09-18 1994-05-10 West Japan Railway Co 共鳴型吸音・遮音パネル
JPH06346528A (ja) * 1993-06-04 1994-12-20 Nozawa Corp レゾネータ型防音パネルの製造方法
WO1996011464A1 (fr) * 1994-10-11 1996-04-18 Nitto Boseki Co., Ltd. Corps, panneau et unite pour absorption phonique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840179A (en) * 1954-06-17 1958-06-24 Miguel C Junger Sound-absorbing panels
GB822954A (en) * 1956-02-18 1959-11-04 Gomma Antivibranti Applic Improvements in sound insulating and absorbing panels
GB2027255A (en) * 1978-07-25 1980-02-13 Weltin W E Sound absorbing means
GB2104568A (en) * 1981-08-20 1983-03-09 Prefabricate Din Beton Granitu Prefabricated sound-absorbent element
WO1985002640A1 (fr) * 1983-12-12 1985-06-20 Lockheed Corporation Barriere anti-bruit
JPH06129029A (ja) * 1992-09-18 1994-05-10 West Japan Railway Co 共鳴型吸音・遮音パネル
JPH06346528A (ja) * 1993-06-04 1994-12-20 Nozawa Corp レゾネータ型防音パネルの製造方法
WO1996011464A1 (fr) * 1994-10-11 1996-04-18 Nitto Boseki Co., Ltd. Corps, panneau et unite pour absorption phonique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 431 (M - 1653) 11 August 1994 (1994-08-11) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 003 28 April 1995 (1995-04-28) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8789652B2 (en) 2009-02-06 2014-07-29 Sonobex Limited Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers
US9607600B2 (en) 2009-02-06 2017-03-28 Sonobex Limited Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers

Also Published As

Publication number Publication date
AU6003298A (en) 1998-09-22
ATE228702T1 (de) 2002-12-15
EP0965122B1 (fr) 2002-11-27
DE69809715D1 (de) 2003-01-09
EP0965122A1 (fr) 1999-12-22

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