• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a soundproofing component (1) comprising an absorber element (2) and a reflection element (3), it is proposed that the absorber element (2) is self-supporting.
    公开号:AT510977A4
    申请号:T2125/2010
    申请日:2010-12-23
    公开日:2012-08-15
    发明作者:
    申请人:Kirchdorfer Fertigteilholding Gmbh；
    IPC主号:
    专利说明:

    1 32648 / mo
    The invention relates to a soundproofing component according to the preamble of claim 1.
    Increased environmental awareness and increasing awareness of the harmful effects of noise pollution on the body and psyche of the population lead to an ever-increasing use of soundproofing components on or near traffic routes in order to reduce the noise pollution of the population.
    There are soundproofing components, such as noise protection panels, known, which have a support body or a base body, which is usually formed of normal concrete, and which forms a load-bearing structure. On this body then a, the expected noise source dressed, arranged layer for absorbing airborne sound. Such a layer is formed by plant growth or by a layer of a porous material, such as porous lightweight concrete.
    A disadvantage of such known soundproofing components is that they have a large thickness. Furthermore, retrofitting existing traffic routes is often difficult due to the space required.
    The object of the invention is therefore to provide a soundproofing component of the type mentioned, with which the mentioned disadvantages can be avoided, which has a small thickness and can be easily adapted to different requirements.
    This is achieved by the features of claim 1 according to the invention.
    This results in the advantage that the soundproofing component can be thinner than conventional soundproofing components with the same noise protection properties. This reduces the area required for sound insulation. This can improve noise protection in areas where the area available for noise control is low, such as on bridges or in cities. The use of noise control material can be reduced with the same result, making the expansion of the important infrastructure more economical. Furthermore, the soundproofing components according to the invention can be built faster due to their 2 small thickness, as they are easier to handle due to their dimensions, or the construction of the foundations is faster due to the smaller footprint. Thereby, the duration in which an important traffic route is partially or completely blocked by a construction site can be reduced, whereby the damage to the economy, which is caused by congestion, can be reduced. Furthermore, more soundproofing components can be transported on a transport device and the transport costs and emissions during construction can be kept low.
    The subclaims relate to further advantageous embodiments of the invention.
    It is expressly referred to the wording of the claims, whereby the claims are hereby incorporated by reference into the description and are considered to be reproduced verbatim.
    The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:
    1 shows a first preferred embodiment of the soundproofing component in cross section.
    FIG. 2 shows a second preferred embodiment of the soundproofing component in cross section; FIG.
    3 shows a third particularly preferred embodiment of the soundproofing component in cross section; and
    Fig. 4, the third particularly preferred embodiment of the soundproofing component in Kavalierperspektive.
    FIGS. 1 to 4 show a soundproofing component 1 comprising an absorber element 2 and a reflection element 3, the absorber element 2 being designed to be self-supporting.
    This results in the advantage that the soundproofing component 1 can be thinner than conventional soundproofing components with the same noise protection properties. This reduces the area required for sound insulation. This can improve noise protection in areas where the area available for noise control is low, such as on bridges or in cities. The use of noise protection material can be reduced with the same result 3, which makes the expansion of the important infrastructure more economical. Furthermore, the soundproofing components 1 according to the invention can be built faster due to their small thickness, as they are easier to handle due to their dimensions, or the construction of the foundations is faster due to the smaller footprint. Thereby, the duration in which an important traffic route is partially or completely blocked by a construction site can be reduced, whereby the damage to the economy, which is caused by congestion, can be reduced.
    The soundproofing component 1 is preferably a component which provides or permits protection against sound or noise. Protection against sound or noise in this context refers to a reduction of the sound pressure or the sound intensity by the soundproofing component 1, which is arranged between a sound source and an area to be protected against high noise pollution. This preferably includes any type or cause of the reduction of this sound pressure level or this sound intensity by the soundproofing component 1, for example due to SchalLdämpfung, sound insulation, Dissipationsverlusten within the soundproofing component 1 and / or reflection losses when hitting the sound waves at interfaces.
    The soundproofing component 1 may preferably be substantially plate-shaped.
    The operation of the soundproofing component 1 is based in particular on the physical principles, and the associated parameters, which are described below.
    The sound intensity of a sound wave impinging on a component is essentially reflected, transmitted and dissipated in the component.
    The prevention of the transmission of the sound intensity by the soundproofing component 1 is called sound insulation. The parameter which is used to indicate the sound insulation properties of a soundproofing component 1 is the sound insulation index, which indicates the ratio between the transmitted and the incident sound intensity in decibels. The prevention of the reflection of the sound energy at the soundproofing component 1 is called sound attenuation or sound absorption. The associated parameter is the sound absorption coefficient, which is the ratio of the non-reflected 4
    Sound intensity reflects the incident sound intensity. Both the Schalldämmmaß and the degree of sound absorption are usually frequency dependent.
    In this case, the absorbed sound intensity not only affects that part of the sound intensity which is converted into heat energy, but additionally includes the transmitted part of the sound intensity. Therefore, the irreversible conversion of sound intensity or sound energy into other forms of energy, such as heat, hereinafter referred to for clarity as dissipation of the sound intensity or the sound energy.
    An element which is intended to dissipate a large part of the sound intensity is referred to as absorber element 2 hereinafter. The dissipation of the sound intensity is due to the structure of an absorber element 2 to conditions.
    One way to dissipate the sound intensity is to use resonators, such as resonant chillers or Helmholtz resonators.
    Another possibility is the use of porous absorbers. A porous absorber has a dense network of largely interconnected voids which extends to the surface of the porous absorber. The structure of an absorber element 2 is therefore comparable to a sponge and not to a foam having closed cavities. A sound wave which strikes the surface of such a porous absorber is reflected only to a small extent, the greater part penetrates into the interior of the porous absorber, where the sound causes the gas contained in the pores and / or cavities to vibrate. Part of this sound energy is converted into heat energy by the friction between the gas oscillating in the pores and the solid material of the porous absorber and thus dissipated. The larger the volume of the porous absorber, the greater the part of the dissipated sound intensity. The solid material of a porous absorber may, for example, of fibrous material, such as mineral wool, textiles or wood wool, or bound bulk, for example, bonded rubber chips or cement-associated mineral or organic 5
    Bulk goods, be.
    In a preferred embodiment of the invention it can be provided that the absorber element 2 is a porous absorber. As a result, the absorber element 2 can be produced with little effort.
    According to a particularly preferred embodiment, it is provided that the material of the absorber element 2 is a hovwerksporiger concrete. As a result, the absorber element 2 is easy to produce in large numbers, weather-resistant, and further has good static properties.
    According to a particularly preferred embodiment it is provided that the haufwerksporiger concrete of the absorber element comprises 2 aggregates with a density between 2000 kg / m3 and 3000 kg / m3. The additives are preferably mineral and / or organic grains or particles. As a result, the absorber element 2 has better static properties than the conventional lightweight porous concrete.
    It is particularly preferred that the aggregates have a bulk density between 2700 kg / m3 and 2900 kg / m3. The bulk density refers to the density of the aggregate, therefore without the free spaces between the individual grains. Furthermore, it is preferably provided that the aggregates have a bulk density greater than 1200 kg / m3, the bulk density denoting the density including the spaces between the individual grains or particles, therefore the total mass relative to the total volume.
    According to the preferred embodiments, it is provided, in particular for the simple formation of the pores, that the additives have particles with predefinable particle sizes. Preferably, grain fractions of 2/4 mm, 4/8 mm or 8/12 mm are provided, the indication 2/4 mm indicating that the aggregates grains with dimensions or grain sizes, also referred to as grain size, from 2 mm to 4 mm have. In addition, in each case small amounts of aggregates with a grain size of 0 to 1 mm can be provided. By choosing the grain sizes, the size of the pores can already be specified during the manufacturing process. It has been shown that the effective frequency range can be influenced by the size of the pores.
    For the formation of the pores can further be provided that the particles 6 of the additives have a discontinuous grading curve. A discontinuous grading curve refers to the fact that certain specifiable grain sizes are not present in the aggregates. As a result, a specification of the type, number and size of the pores can also be achieved. The pores are formed in the two aforementioned preferred embodiments of the absorber element 2, as already stated, by free spaces between individual particles of the additives.
    To improve the static properties of the absorber element 2, it is preferably provided that a reinforcement is arranged in the absorber element 2. Preferably, a substantially corrosion-resistant reinforcement is provided, since due to the cavities moisture can penetrate well into the interior of the absorber element 2. In particular, it is provided that the reinforcement comprises galvanized steel. For a good connection of the reinforcement with the cavities partially perforated absorber element 2 is provided in a further development of the invention that the reinforcement is designed as at least two-dimensional framework or structure.
    Such a designed absorber element 2 can achieve a high degree of sound absorption with relatively small thicknesses, or ensure the static load capacity. However, it has been shown that disproportionately large wall thickness would be required by the porous structure for the requirements of sound insulation.
    In order to increase the Schalldämmmaß the soundproofing component 1, the soundproofing component 1 next to the absorber element 2 comprises a reflection element 3. By this reflection element 3, the Schalldämmmaß can be increased, but this also reduces the degree of sound absorption.
    The reflection element 3 is preferably substantially plate-shaped, wherein the surface normal of the reflection element 3 is substantially parallel to the thickness direction of the absorber element 2.
    The total area of the reflection element 3 is preferably smaller than or equal to the total area of the absorber element 2.
    It can be provided that the height or length of the reflection element 3 is smaller than the height or length of the absorber element 2. As a result, with simple means only a partial increase of the 7th
    Schalldeämmmaßes, or to a reduction in the degree of sound absorption.
    Furthermore, it can be provided that the reflection element 3 is formed in several pieces, and is arranged for example in the form of parallel slats or strips.
    The reflection element 3 may be embedded in the absorber element 2, wherein the edge of the soundproofing component 1 is formed only by the absorber element 2.
    In other embodiments of the soundproofing component 1 can also be provided that the reflection element 3 at least partially, in particular on at least one side of the soundproofing component 1, forms a part of the edge of the soundproofing component.
    It can also be provided that the edge of the reflection element 3 substantially corresponds to the edge of the soundproofing component 1.
    Since the reflection of the sound wave take place substantially at the interface between the absorber element 2 and the reflection element 3, the thickness of the reflection element 3 can be small.
    The thickness of the reflection element (3) may preferably be less than or equal to 5 cm, preferably less than or equal to 3 cm, in particular less than or equal to 1 cm.
    The reflection element 3 should preferably have such a high characteristic impedance that a good part of the sound wave coming from the absorber element 2 is reflected. In a preferred embodiment, the characteristic impedance of the reflection element 3 differs from the characteristic impedance of the absorber element 2. As a result, the structure-borne noise of the absorber element 2, that is, that sound which propagates in the solid material of the absorber element 2, can be reflected.
    Furthermore, it is preferably provided that the reflection element 3 is substantially free of pores and / or free of hollow bodies, wherein the reflection element 3 has a high sound insulation.
    According to a particularly preferred embodiment it can be provided that the material of the reflection element 3 is a concrete, and / or a fiber cement, and / or a soaked woven fabric and / or a plastic mat. As a result, the reflection element 3 can be formed with good acoustic properties and mechanical properties with low production costs.
    According to the invention, it is provided that the absorber element 2 is self-supporting. As a result, in particular, no additional support structure is necessary and almost the entire volume of
    Soundproofing component 1 can be used to dissipate the sound intensity.
    According to one embodiment it can be provided that the soundproofing component 1 is designed as a soundproofing panel for a noise protection wall.
    According to another embodiment, a noise barrier with soundproofing components 1 according to the invention is provided.
    According to a further embodiment of the invention it can be provided that the reflection element 3 is arranged in direct contact with the absorber element 2. As a result, the space requirement of the soundproofing component 1 can be further reduced in an advantageous manner.
    In a further embodiment of the invention can be provided that the reflection element 3 is attached to the absorber element 2. As a result, no support structure for the reflection element 3 is necessary, whereby the space requirement and the use of materials can be reduced.
    This attachment can be done for example by means of screwing and / or gluing and / or mechanical gearing.
    If the absorber element 2 is free-flowing during production, then the connection can take place in the flowable state and / or during setting.
    If the reflection element 3 is free-flowing during production, then the connection can take place in the flowable state and / or during setting.
    Fig. 1 shows a first preferred embodiment. This first preferred embodiment has the plate-shaped absorber element 2 and the plate-shaped reflection element 3 resting thereon. The side of the soundproofing member 1 having the absorber member 2 as the outer surface is the first side. The side having the reflection member 3 as the outer surface is the second side.
    According to the first preferred embodiment, this is
    Absorber element 2 made of hspwerksporigem concrete, and the reflection element 3 of 9
    Fiber cement.
    In use, it is preferably provided that the first side faces a noise source.
    A sound wave originating from a noise source, which faces the first side, for the most part enters the absorber element 2 through a first reflection-poor interface 5, where parts of its energy are dissipated. The sound wave transmitted through the absorber element 2 impinges on a first reflecting boundary surface 7 of the reflection element 3 with already reduced sound intensity, with a majority of the sound intensity being reflected. The non-reflected part of the sound intensity, which has penetrated into the reflection element 3, is subsequently largely emitted by the second reflecting boundary surface 8. This transmitted sound intensity is only a fraction of the original sound intensity, whereby a good sound insulation is achieved. The reflected sound intensity at the first reflecting interface 7 is again reduced by the absorber element 2 and ultimately emitted by the first low-reflection interface 5 mostly. This part of the sound intensity reflected from the first side is reduced mainly by the dissipation in the absorber element 2, whereby a good sound absorption is achieved. A sound wave coming from the outside to the second side will be mainly reflected by the second reflecting interface 8 of the reflection element 3.
    According to a second preferred embodiment, which is shown in FIG. 2 and is a development of the first preferred embodiment, it can be provided that the reflection element 3 is embedded in the absorber element 2. This can be achieved on both sides good sound absorption. This makes it possible to dispense with an additional attachment of the reflection element 3, whereby a further step or a possible source of error is eliminated. As a result, the reflection element 3 can already be embedded in the absorber element 2 during the production process of the absorber element 2, whereby subsequent attachment is eliminated. As a result, the reflection element 3 is better protected against external influences, whereby the selection of possible materials for the reflection element 3 is increased, since, for example, it is not necessary to pay attention to their UV compatibility. 10
    This second preferred embodiment has the plate-shaped absorber element 2 and the plate-shaped reflection element 3, wherein the plate-shaped reflection element 3 is embedded in the absorber element 2.
    The total surface of the reflection element 3 is slightly smaller than the total area of the absorber element 2, whereby the absorber element 2 is not severed by the reflection element 3 and thus is in one piece. It can be provided that the outer dimensions of the reflection element 3 essentially correspond to those of the soundproofing component 1.
    The absorber element 2 has the first low-reflection boundary surface 5, which forms part of the surface of the soundproofing component 1, and a second low-reflection boundary surface 6, which is opposite to the first low-reflection boundary surface 5 and also forms part of the surface of the soundproofing component 1.
    In the second preferred embodiment, the first reflecting interface 7 and the second reflecting interface 8 are located in the interior of the soundproofing component 1. In the case of a sound wave impinging on the first low-reflection boundary surface 5 from the outside in the second preferred embodiment, the sound intensity is Area of the absorber element 2 between the second reflective interface 8 and the second reflection-poor interface 6 by the sound of the reflection element 3 very low. Due to the low sound intensity, only a small amount of sound energy is dissipated in this area, as a result of which a region of the absorber element 2 is not optimally utilized when the sound wave impinges predominantly on one side.
    In a development of the invention, it can be provided that the reflection element 3 -as seen in the thickness direction of the soundproofing component 1 -is embedded in the absorber element 2 in an off-center manner. Thereby, the sound absorption coefficient for both sides of the soundproofing component 1 can be chosen differently, whereby the soundproofing component 1 can be better adapted to the local noise protection requirements. For example, the absorptance at the traffic-facing side may be greater than at the side facing away from the traffic, in that the thickness of the absorber element 2 on the traffic-facing side is greater than on the traffic-remote side, advantageously dispensing with an elaborate grading of the acoustic properties of the absorber element 2 can be. Furthermore, this allows the volume of the absorber element 2, which dissipates less sound energy due to the lower sound intensity, to be reduced, as a result of which the space requirement and the use of material can be reduced.
    In Fig. 3 and Fig. 4, a third particularly preferred embodiment is shown, which represents a development of the second preferred embodiment.
    According to the third particularly preferred embodiment it can be provided that the reflection element 3 has openings 4. As a result, the thickness of the absorber element 2 can be further reduced since more volume can be used by the absorber element 2 for the effective dissipation of sound energy.
    The openings 4 of the reflection element 3 are referred to as a result only openings 4. The ratio of the area of the apertures 4 of the reflection element 3 to the total surface of the reflection element 3 can be chosen freely, whereby the Schaüreflexion can be freely selected on the reflection element 3 in a wide range. As a result, the degree of sound absorption can be increased at the expense of Schalldämmmaßes, or vice versa. As a result, the soundproofing component 1 can be made thin, with the requirements for soundproofing and sound absorption being met exactly.
    Furthermore, some or all openings 4 can be formed open-edge, wherein a portion of the opening forms the edge.
    With the thickness of the absorber element 2, the size and / or surface of the reflection element 3 and the position of the reflection element 3 in the thickness direction of the absorber element 2 SchaLLdämmmaß and sound absorption of the soundproofing component 1 can be optimized. Only two of these parameters can be used.
    It can also be provided that the reflection element 3 is arranged obliquely in the soundproofing component 1. In this case, a different Schalldämmmaß and / or a different degree of sound absorption can be provided in different areas. 12
    According to the third particularly preferred embodiment it can be provided that the openings 4 are filled by the absorber element 2. As a result, the static properties of the absorber element 2 are improved, whereby the service life of the soundproofing component 1 is increased. Furthermore, the safety of road users can be improved because the risk of static failure of the soundproofing component 1 in the event of an accident can be reduced.
    The shape of the openings 4 may have any shape. For example, the apertures 4 may be in the form of circles, ellipses, squares, rectangles, triangles, stripe patterns, or more complex surfaces.
    According to the third particularly preferred embodiment it can be provided that the openings 4 are formed as a hole structure. As a result, the openings can be made with little effort. Furthermore, the reflection element 3 can thereby be formed in one piece, whereby the embedding of the reflection element 3 in the absorber element 2 can be simplified. Due to the one-piece design of the reflection element 3, the mechanical advantages are still given by the composite between absorber element 2 and reflection element 3.
    The distribution of the openings 4 in the reflection element 3 can be formed in different ways. For example, the apertures 4 can be randomly distributed or arranged in groups.
    According to the third preferred embodiment can be provided that the openings 4 are arranged like a checkerboard. As a result, a uniform distribution of the effect of the openings 4 can be achieved, whereby the absorber element 2 can be optimally utilized to dissipate the sound energy.
    In a further development of the invention, it can be provided that the ratio of the area of the apertures 4 to the total area of the reflection element 3 has a gradient in one direction, preferably the height direction of the soundproofing component 1. As a result, the acoustic properties of the soundproofing component 1 can be further adapted to the local noise protection requirements. 13
    For example, in a SchallschutzbauteiL 1 next to a traffic route, the ground-level sound are better insulated, and the higher area of the soundproofing component 1, the sound, which more by reflection or diffraction enters the areas to be protected, absorb stronger.
    In a noise barrier, consisting of several designed as a soundproofing soundproofing components 1, the soundproofing panels used in the height direction may have different ratios of the area of the openings 4 to the total surface of the reflection element 3.
    According to a further embodiment of the invention, it can be provided that the ratio of the area of the perforations 4 to the total area of the reflection element 3 of the soundproofing panels used a noise protection wall along the height direction and / or a longitudinal direction of the noise protection wall is different. As a result, in the case of noise protection, punctual areas, such as, for example, individual residential objects located close to the traffic route, can be taken into account.
    Further embodiments according to the invention have only a part of the features described, wherein each feature combination, in particular also of various described embodiments, can be provided.
    claims:
    权利要求:
    Claims (13)
    [1]
    DR. FERDINAND GIBLER DR DR. WOLFGANG POTH Austrian and European Patent and Trademark Attorneys GIBLER & POTH PATENTANWÄLTE 32648 / pt PATENT CLAIMS 1. A soundproofing component (1) comprising an absorber element (2) and a reflection element (3), characterized in that the absorber element (2) is self-supporting.
    [2]
    2. Soundproofing component (1) according to claim 1, characterized in that the reflection element (3) is arranged in direct contact with the absorber element (2).
    [3]
    3. Soundproofing component (1) according to claim 1 or 2, characterized in that the reflection element (3) in the absorber element (2) is embedded.
    [4]
    4. Soundproofing component (1) according to one of claims 1 to 3, characterized in that the reflection element (3) seen in the thickness direction of the soundproofing component (1) - off-center in the absorber element (2) is embedded.
    [5]
    5. Soundproofing component (1) according to one of claims 1 to 4, characterized in that the reflection element (3) has openings (4).
    [6]
    6. Soundproofing component (1) according to claim 5, characterized in that the openings (4) of the absorber element (2) are filled.
    [7]
    7. Soundproofing component (1) according to claim 5 or 6, characterized in that the openings (4) are formed as a hole structure.
    [8]
    8. soundproofing component (1) according to one of claims 5 to 7, characterized in that the openings (4) are arranged like a checkerboard. 15
    [9]
    9. soundproofing component {1) according to one of claims 1 to 8, characterized in that the material of the absorber element (2) is a hovwerksporiger concrete.
    [10]
    10. Soundproofing component (1) according to one of claims 1 to 9, characterized in that the material of the reflection element (3) is a concrete, and / or a fiber cement, and / or a soaked knitted fabric and / or a plastic mat.
    [11]
    11. Soundproofing component (1) according to one of claims 1 to 10, characterized in that it is designed as a soundproofing panel for a noise barrier.
    [12]
    12. Soundproofing component (1) according to one of claims 1 to 11, characterized in that the thickness of the reflection element (3) is less than / equal to 5 cm, preferably less than / equal to 3 cm, in particular less than / equal to 1 cm.
    [13]
    13. noise protection wall with soundproofing components (1) according to one of claims 1 to 12.

    Gibler & Poth Patent Attorneys OG (Dr. F. Gibler or Dr. W. Poth)
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    US7694567B2|2005-04-11|2010-04-13|Massachusetts Institute Of Technology|Acoustic detection of hidden objects and material discontinuities|
    KR100793074B1|2007-09-06|2008-01-10|김부열|Panel for construction for reducing noise between floors having air purification and sterilizing functions|JP5683044B2|2011-09-12|2015-03-11|株式会社巴川製紙所|Production method of sound transmitting material|
    AT516032B1|2014-07-23|2016-02-15|Kirchdorfer Fertigteilholding Gmbh|guide wall|
    CN107071668B|2017-05-24|2019-08-20|歌尔股份有限公司|Loudspeaker mould group and electronic equipment|
    DE102017113033A1|2017-06-13|2018-12-13|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.|Sound absorbing curtain|
    RU199553U1|2020-05-27|2020-09-07|Павел Анатольевич Аносов|Soundproof building panel|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA2125/2010A|AT510977B1|2010-12-23|2010-12-23|ACOUSTIC COMPONENT|ATA2125/2010A| AT510977B1|2010-12-23|2010-12-23|ACOUSTIC COMPONENT|
    RS20150087A| RS53832B1|2010-12-23|2011-12-14|Sound protection element|
    PCT/AT2011/000495| WO2012083319A2|2010-12-23|2011-12-14|Sound protection component|
    UAA201308652A| UA110042C2|2010-12-23|2011-12-14|Sound deading block|
    SI201130393T| SI2655744T1|2010-12-23|2011-12-14|Sound protection element|
    EP11815841.9A| EP2655744B1|2010-12-23|2011-12-14|Sound protection element|
    US13/997,105| US9538267B2|2010-12-23|2011-12-14|Sound protection component|
    PT118158419T| PT2655744E|2010-12-23|2011-12-14|Sound protection element|
    ES11815841.9T| ES2529222T3|2010-12-23|2011-12-14|Sound insulation component|
    DK11815841.9T| DK2655744T3|2010-12-23|2011-12-14|Noise protection element|
    CA2822303A| CA2822303A1|2010-12-23|2011-12-14|A sound protection component|
    BR112013016015-2A| BR112013016015A2|2010-12-23|2011-12-14|soundproofing component|
    PL11815841T| PL2655744T3|2010-12-23|2011-12-14|Sound protection element|
    AU2011349083A| AU2011349083B2|2010-12-23|2011-12-14|Sound protection component|
    EA201390951A| EA025977B1|2010-12-23|2011-12-14|Noise protection wall with sound protection components|
    IL227116A| IL227116A|2010-12-23|2013-06-20|Sound protection component|
    HRP20150091| HRP20150091T1|2010-12-23|2015-01-26|Sound protection element|
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