• 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:
    The invention relates to an antivibration device (100), for example intended for a railway application, comprising: - a first armature (10), - a second armature (20), - a vibration damping structure (30) located between the two armatures (10, 20), and - at least one fire barrier layer (40) at least partially covering the damping structure (30); characterized in that said at least one fire barrier layer (40) is a polychloroprene elastomer comprising at least one flame retardant selected from alumina trihydrate or magnesium hydroxide.
    公开号:FR3049029A1
    申请号:FR1652335
    申请日:2016-03-18
    公开日:2017-09-22
    发明作者:Yann Fromont；Nordine Addes；Stephane Avoinet；Pierre-Emmanuel Gautheret
    申请人:Hutchinson SA；
    IPC主号:
    专利说明:

    The invention relates to a fire-resistant antivibration device for a railway application. Railway applications include trains, trams and subways.
    The document EP 2 196 492 proposes a fire-resistant antivibration device, in particular intended for railway application, comprising two reinforcements, a damping structure located between the two plates and a fire barrier layer at least partially covering the damping structure. . The damping structure is made of elastomer. The fire barrier layer comprises a bonding agent, for example an elastomer, and a flame retardant.
    The standards applicable in terms of fire resistance are more and more demanding, particularly in the railway sector. Thus, in the railway field, the standard EN 45545-2 (2013) now refers.
    An object of the invention is to provide an antivibration device having an improved fire resistance, particularly capable of meeting the aforementioned standard. To this end, the invention proposes an antivibration device for a railway application, comprising: a first reinforcement, a second reinforcement, a vibration damping structure located between the two reinforcements, and at least one barrier layer. the fire at least partially covering the damping structure; characterized in that said at least one fire barrier layer is a polychloroprene elastomer comprising at least one flame retardant selected from alumina trihydrate or magnesium hydroxide.
    The device may also have at least one of the following features, taken alone or in combination; the polychloroprene base represents between 80 parts and 100 parts of the elastomer forming this fire-barrier layer, for 100 parts of the elastomer forming this fire-barrier layer, and the alumina trihydrate or the magnesium hydroxide represents between 10 and 300 parts; the fire barrier layer comprises a vulcanizing agent chosen from: zinc oxide (ZnO), diarylparaphenylenediamine, magnesium oxide (MgO) or made from a mixture thereof; the fire barrier layer comprises an adhesion agent between the fire barrier layer and the damping structure, namely triallylisocyanurate and / or dicumyl peroxide; the or each adhesion agent represents at most 20 parts; the fire barrier layer comprises at least one processing agent, for example bis (pentabromophenyl) ethane, stearic acid, chlorinated paraffin or a mixture thereof; the fire barrier layer comprises at least one mechanical reinforcing agent, for example carbon black and / or antimony trioxide; the fire barrier layer has a thickness of at least 0.5 mm; the fire barrier layer comprises at least one other elastomer, for example an elastomer making it possible to improve the implementation, the mechanical properties or the gas impermeability of the polychloroprene; the first reinforcement forms an internal reinforcement, the second reinforcement forms an external reinforcement and the vibration damping structure is in the form of a laminated elastomer layer / layer of a non-elastomeric material more rigid than the an elastomer, for example metal, and having a first face fixed to the internal frame, a second face fixed to the outer frame, a third face extending between the inner frame and the outer frame and a fourth face. opposed to the third face and also extending between the inner armature and the outer armature, Sesdits third and fourth faces being thus non-fixed faces to the inner and outer armatures, the fire barrier layer being also located on the at least one of the faces not connected to the inner and outer armatures. The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows and which is made with reference to the following appended figures:
    FIG. 1 represents, in a sectional view, an example of an antivibration device according to the invention;
    FIG. 2 represents, in a perspective view, the antivibration device of FIG. 1.
    The following description is made with reference to Figures 1 and 2 attached, which show an antivibration device used for a railway application. In this case, it is a primary suspension intended to be installed on a train bogie.
    However, it should be noted that the following description could equally well concern, for this railway application, a secondary suspension such as that represented in EP 2 196 492, an elastic hinge, in particular of the pivot type, rod elastic or plain bearing ("bush" or "bush bearing" in the English terminology) or an elastic wheel (tramway, subway).
    The antivibration device 100 according to the invention comprises a first armature 10, a second armature 20 and a vibration damping structure 30 located between the two armatures 10, 20.
    In the case in point, the first armature 10 forms an internal armature and the second armature 20 forms an external armature and the vibration damping structure 30 is in the form of a laminated layer of elastomer 301 / film layer. a more rigid non-elastomeric material 302 (in this case metal) than the elastomer extending between the two plates 10, 20. More specifically, in this particular case, the vibration damping structure comprises a first face 31 fixed to the inner armature 10, a second face 32 fixed to the outer armature 20, a third face 33 extending between the inner armature 10 and the outer armature 20 and a fourth face 34, opposite at the third face 33 and also extending between the inner armature 10 and the outer armature 20. It is understood that the faces 33, 34 are not attached to any of the internal or external armatures.
    The antivibration device 100 also comprises at least one fire barrier layer 40 at least partially covering the damping structure 30. In this case, the fire barrier layer 40 covers the fourth face 34 of the damping structure 30 vibrations, which is the surface intended to be the most exposed, in use, a possible problem
    The fire barrier layer 40 is a polychloroprene elastomer comprising at least one flame-retardant agent, in this case alumina trihydrate. The thickness of the fire barrier layer 40 will advantageously be at least 0.5 mm, and typically about 2 mm. Advantageously, this thickness will nevertheless be between 0.5 mm and a few mm, in particular between 0.5 mm and 10 mm or between 0.5 mm and 5 mm. More generally, this thickness may be between 0.5 mm and several centimeters and in particular between 0.5 mm and 3 cm. A minimum value of 0.5 mm is indeed advantageous for maintaining a minimum mechanical strength of the barrier layer 40 fire, especially during the manufacture of the device. In addition, it is not easy to ensure, during this manufacture, an adequate calendering of a fire barrier layer of less than 0.5 mm. The fire barrier layer 40 does not intervene in the damping and therefore antivibration function of the antivibration device which is provided by the damping structure 30.
    Table 1 represents an example of chemical composition of the fire barrier layer 40 that can be used with the antivibration device 100 of FIGS. 1 and 2.
    Table 1
    Dupont ™ Neopren GW is an example of polychloroprene that can be used. Apyral® 200SM is an example of alumina trihydrate with a specific surface area of 15 m 2 / g that can be used. Indeed, the alumina trihydrate is, before manufacture of the fire barrier layer, in the form of powder. It should be noted that there are several grades of alumina trihydrate, these grades differing from each other by their specific surfaces. The higher the specific surface area, the greater the flame retardancy effect.
    In Table 1, the quantities of each product are provided in phr, namely in parts. As in any elastomer formulation, 100 parts of elastomer, in this case 100 parts of polychloroprene, are first defined. Then, the other parts are defined according to these 100 parts of elastomer.
    The essential products to achieve the objective of the invention are polychloroprene (elastomer) and alumina trihydrate (Al 2 O 3 - 3H 2 O), the latter being a flame retardant.
    Thus, in addition to the specific composition provided in Table 1, it will be possible to provide a fire barrier layer 40 comprising only polychloroprene and alumina trihydrate (ATH). In this case, there will be provided, for 100 parts (phr) of polychloroprene, between 10 and 300 parts (phr) of alumina trihydrate.
    If a thickness of 0.5 mm is provided for the fire barrier layer 40, then it is expedient to provide, for 100 parts of polychloroprene, at least 200 parts of alumina trihydrate. This ensures the fire resistance, especially according to the above standard.
    When the thickness of the fire barrier layer increases, it is conceivable to provide, for 100 parts of polychloroprene, less than 200 parts (but still more than 10) of alumina trihydrate to ensure the fire resistance, in particular according to the aforementioned standard. For example, for a thickness of the fire barrier layer of 1.5 mm, it is expedient to provide, for 100 parts of polychloroprene, at least 70 parts of alumina trihydrate. According to another example, for a thickness of the layer Fire barrier 40 to 10 mm, it is advantageously provided to always, for 100 parts of polychloroprene, at least 20 parts of alumina trihydrate. Finally, according to yet another example, for a thickness of 2 cm or more of the fire barrier layer 40, it is possible to envisage, for 100 parts of polychloroprene, 10 parts of alumina trihydrate,
    It should be noted that alumina trihydrate may be replaced by magnesium hydroxide as a flame retardant. In this case, the basic chemical composition of the fire barrier layer 40 provides polychloroprene and magnesium hydroxide, in proportions (pce) identical to those of polychloroprene and alumina trihydrate. Thus, for 100 parts (phr) of polychloroprene, between 10 and 300 parts (phr) of magnesium hydroxide will be provided. Again, depending on the thickness of the fire barrier layer 40 increases, the minimum portion of magnesium hydroxide, per 100 parts (phr) of polychloroprene) is adjustable as described above for alumina trihydrate, qualitatively and quantitatively ,
    The composition of the fire barrier layer 40 provided in Table 1 has been tested in accordance with EN 45545-2, applicable to the railway field.
    This standard proposes various tests to be carried out, the tests concerned being dependent in particular on the nature of the antivibration device (for example elastomer / metal or not, mass of elastomer) and the environment of use (for example, depending on the train is a sleeper train, a subway, etc ...).
    The antivibration device 100 shown in Figures 1 and 2 is in this case an elastomer piece / metal. In this case, the standard indicates that it is appropriate to refer to criteria R9, R22, R23 and / or R24. Each criterion offers a series of tests, each test to be performed according to an ISO standard.
    Among these various criteria, the most difficult to reach is the R9 criterion, which involves two tests to be carried out, the first according to the ISO 5660-1 standard (ergonomics and heat flow with determination of the MAURE at 25 kW / m2), the second according to the standard ISO 5659-2 (smoke opacity with determination of Ds (max) at 25kW / m2 with pilot flame plus, at the same time, smoke toxicity at 25 kW / m2 with pilot flame and determination of CITG at 4mn and 8mn ).
    Moreover, taking into account the environment of use of the antivibration device is established for each criterion and each ISO test concerned by this criterion, on the basis of limit values more or less difficult to reach, according to a classification HL1 (the less restrictive) to HL3 (the most restrictive: including sleeper train or metro, which evolves in tunnel). This is why the composition of Table 1 has been tested according to criterion R9 of EN 45545-2, a criterion which is the most difficult to achieve for an antivibration device such as that shown in FIGS. 1 and 2.
    In order to meet the standard according to this criterion R9, the various tests must be carried out on an elastomer plate with a thickness of 20mm, making 100mm * 100m (Test 1 of Table 2) or 75mm * 75mm (Test 2 of Table 2) in the other dimensions, and whose composition is that which is intended to form the vibration damping structure. Cladding is added to the surface of the plate, this cladding being intended to represent the fire barrier layer 40.
    For more details on the implementation of the various tests, reference may be made to standard EN 45545-2.
    Table 2 below provides, for the various tests of criterion R9, the results obtained for a "reference I" (20 mm thick natural rubber plate, without fire cladding), a "reference I! (18mm thick natural rubber plate, with cladding whose composition is that of Table 1 but without alumina trihydrate, in thickness 2mm) and the results obtained for "invention" (18mm thick natural rubber plate) with cladding whose composition is that of Table 1, thickness 2mm).
    For "reference f", "reference II" and for "invention", the plates have identical dimensions in directions other than thickness. Table 2 also points out what should be achieved according to criterion R9 (the most difficult to reach among criteria R9, R22, R23 and R24), sub-criterion HL2 (average stress among sub-criteria HL1, HL2 and HL3, but generally covers more than 90% of the market).
    Table 2 - criterion R9, HL2 of EN45545-2
    As can be seen from Table 2, neither reference I nor reference II are in conformity with the standard. By comparing reference II to reference I, it is noted that MAHRE is significantly improved, such as toxicity. This is related to the presence of polychioroprene. However, reference II does not make it possible to reach the criterion Ds (max).
    On the contrary, the invention passes the norm according to the criterion R9, sub-criterion HL2. Moreover, by comparing the invention with reference II, it is noted that the presence of alumina trihydrate, in addition to polychioroprene, significantly improves the Ds (max) and also improves the MAHRE. The improvement of Ds (max) can be attributed to the presence of alumina trihydrate. With regard to MAHRE, there is a synergistic effect between polychioroprene and alumina trihydrate.
    It should be noted that if one wishes to reach the sub-criterion HL3, one can by increasing the thickness of cladding, which is representative, according to the standard, of the thickness of the fire barrier layer 40, beyond 2 mm retaining the composition of Table 1. Alternatively, this thickness of 2 mm can be maintained and the alumina trihydrate portions can be increased. According to another variant, it is also possible to increase both the thickness of the cladding and the parts of alumina trihydrate. Advantageously, however, the synergistic effects between polychloroprene and alumina trihydrate, especially on MAHRE, will be used by increasing the proportions of alumina trihydrate without modifying the thickness of the cladding, see reducing it. This makes it possible to define a fire barrier layer 40 that meets the requirements and is not too cumbersome.
    With regard to the chemical composition of the fire barrier layer 40, it will be possible more generally to provide, as indicated in Table 3, the following parts (phr):
    As a reminder, the composition of the elastomer forming the fire barrier layer 40 is always set to 100 parts. The base of this elastomer forming the fire barrier layer is polychloroprene (CR), with at least 80 parts (ie between 80 and 100 parts of the elastomer forming the fire barrier layer), and, as shown in Table 3 , another elastomer making it possible to carry out the complement to arrive at the total of 100 parts, can be considered to fulfill certain functions.
    For example, this other elastomer may be an additional processing agent (facilitates the mixing of the various components during the manufacture of the fire barrier layer) representing at most 20 parts (as a result the polychloroprene then represents at least 80 parts ).
    In another example, this other elastomer can improve the mechanical properties of the fire barrier layer 40. In this case, it may in particular consider natural rubber (NR) representing at most 5 parts (as a result polychloroprene then represents at least 95 parts).
    According to a last example, this other elastomer can improve the impermeability to gases of polychloroprene. In this case, it is particularly possible to consider a butyl (known by the acronym IIR, meaning "Isobutylene Isoprene Rubber" in the English terminology), representing at most 10 parts or at most 5 parts.
    The maximum shares of this other elastomer, whatever its function, are determined, for the examples given, so that the elastomer based on polychloroprene maintains its fire resistance properties, particularly with regard to the aforementioned standard.
    Of course, several other elastomers can be envisaged, in addition to the polychloroprene base, for example a mixture of the other elastomers mentioned above.
    It should be noted that the alumina trihydrate employed in the fire barrier layer 40 will advantageously have a specific surface area (m 2 / g) of at least 15 m 2 / g (powder). This is the case of the product known under the trade name PApyral® 200 SM. Nevertheless, it is possible to envisage the use of an alumina trihydrate with a specific surface area of at least 10 m 2 / g (for example PApyral® 120E, which has a specific surface area of 11 m 2 / g), or even at least one of SnrVg ( for example PApyral® 60D which has a specific surface area of 6 m 2 / g). Whatever the grade considered, it is possible, for 100 parts of elastomer, always to provide between 10 parts and 300 parts of alumina trihydrate. However, for a grade whose surface area is less, it is necessary to provide more alumina trihydrate parts. As an example, if for 100 parts of elastomer 95 parts of Apyral® 200SM are expected, an equivalent in terms of expected results corresponds, again for 100 parts of elastomer, to 120 parts of Apyrai® 60D.
    As shown in Table 3, the fire barrier layer 40 may comprise at least one vulcanizing agent selected from: zinc oxide (ZnO), diarylparaphenylenediamine, magnesium oxide or made from a mixture thereof. Moreover, in the tested case of Table 1, the fire barrier layer 40 comprises a mixture of all these chemical compounds. This ensures, during manufacture, the vulcanization of the barrier layer 40 in the fire.
    In addition, still in support of Figure 3, it is noted that the fire barrier layer 40 may comprise at least one adhesion agent between polychloroprene (fire barrier layer 40) and natural rubber (damping structure 30), namely triallylisocyanurate (TAIC) and / or dicumyl peroxide.
    This or each of these adhesion agents can also ensure adhesion with other types of elastomer than natural rubber. Thus, it is quite possible to envisage, by way of non-limiting examples, butadiene (BR), butadiene nitride (NBR) or styrene butadiene (SBR). This adhesion, which is then a chemical adhesion between the fire barrier layer 40 and the damping structure 30 is advantageous because it makes it possible to ensure that the barrier layer covers, in all conditions of use, the damping structure. 30. Nevertheless, in the absence of adhesion promoter in the fire barrier layer, other means may be provided such as an adhesive adapted between the fire barrier layer 40 and the damping structure 30.
    In some cases, especially when the antivibration device has a certain symmetry (this is the case in FIGS. 1 and 2) and still in the absence of such an adhesion agent, it is possible to be satisfied with the elastic properties of the fire barrier layer, which properties enable the fire barrier layer 40 to be sufficiently held against the damping structure 30 (the fire barrier layer 40 is then in the form of a "sock" covering the circumference of the structure depreciation 30).
    Similarly, the fire barrier layer 40 may comprise at least one implementing agent, namely Bis (pentabromophenyl) ethane, stearic acid and / or chlorinated paraffin. An implementing agent facilitates the mixing between the various components during the manufacture of the elastomer for forming the barrier layer 40 in the fire.
    Finally, and in a conventional manner, the fire barrier layer 40 may comprise a mechanical reinforcing agent, namely carbon black and / or antimony trioxide.
    The antivibration device 100 according to the invention of Table 1 and as shown in Figures 1 and 2, can be manufactured in the following manner.
    Firstly, a 2mm thick plate with the chemical composition defined in Table 1 is calendered.
    Then, this plate is cut in the form of a ring portion (this shape is chosen because it allows to obtain a cone once formatted in three dimensions).
    This plate is then placed with two reinforcements and a set of metal parts (intended to form the rigid layers of the elastomer / metal laminate of the damping structure 30) in a mold. It should be noted that the mold is in itself quite conventional and is therefore a mold typically used to form an antivibration device having no fire barrier layer.
    Natural rubber is then injected into the mold (this rubber being intended to form the elastomer / metal laminate elastomer of the damping structure 30).
    The vulcanization is carried out, for example at 160 ° C. for 15 minutes. During this vulcanization step, the elastomer of the fire barrier layer 40 intimately bonds with the elastomer (here, natural rubber) of the damping structure 30.
    A fire barrier layer 40 is thus perfectly integrated into the antivibration device 100, with the risk of delamination with the elastomer of the damping structure being very limited, to say the least.
    Of course, it is understood that this manufacturing method, described for the particular case of the fire barrier layer whose chemical composition is provided in Table 1 to obtain an antivibration device 100 as shown in Figures 1 and 2 is generalizable to other antivibration devices, comprising in particular a fire barrier layer as defined in Table 3 or in which the alumina trihydrate is replaced by magnesium hydroxide and / or does not form a primary suspension.
    Moreover, before carrying out the calendering of the fire barrier layer, it is understood that this layer should be chemically formulated. This operation is traditional and is not more detailed. However, it is at this stage that the grade (specific surface area) of the alumina trihydrate powder to be employed should be chosen. A similar remark can be made when different grades of magnesium hydroxide are available.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    An antivibration device (100) for railway application, comprising: - a first armature (10), - a second armature (20), - a vibration damping structure (30) located between the two armatures (10, 20), and - at least one fire barrier layer (40) at least partially covering the damping structure (30); characterized in that said at least one fire barrier layer (40) is a polychloroprene elastomer comprising at least one flame retardant selected from alumina trihydrate or magnesium hydroxide.
    [2" id="c-fr-0002]
    2. An antivibration device (100) according to claim 1, wherein the fire barrier layer (40) is such that: - the polychloroprene base represents between 80 parts and 100 parts of the elastomer forming this barrier layer fire, for 100 parts of the elastomer forming this fire barrier layer; and alumina trihydrate or magnesium hydroxide represents between 10 and 300 parts.
    [3" id="c-fr-0003]
    3. Antivibration device (100) according to one of the preceding claims, wherein the fire barrier layer (40) comprises a vulcanizing agent selected from: zinc oxide (ZnO), diaryiparaphénylènediamine, magnesium oxide (MgO) or realized from a mixture of these.
    [4" id="c-fr-0004]
    An antivibration device (100) according to one of the preceding claims, wherein the fire barrier layer (40) comprises an adhesion agent between the fire barrier layer (40) and the damping structure (30). namely Triallylisocyanurate and / or dicumyl peroxide.
    [5" id="c-fr-0005]
    5. Anti-burial device (100) according to the preceding claim, wherein the or each adhesion agent represents at most 20 parts.
    [6" id="c-fr-0006]
    6. Antivibration device (100) according to one of the preceding claims, wherein the fire barrier layer (40) comprises at least one implementing agent, for example Bis (Pentabromophenyl) ethane, stearic acid, chlorinated paraffin or a mixture thereof.
    [7" id="c-fr-0007]
    7. An antivibration device (100) according to one of the preceding claims, wherein the fire barrier layer (40) comprises at least one mechanical reinforcing agent, for example carbon black and / or antimony trioxide.
    [8" id="c-fr-0008]
    8. An antivibration device (100) according to one of the preceding claims, wherein the fire barrier layer (40) has a thickness of at least 0.5mm.
    [9" id="c-fr-0009]
    9. An antivibration device (100) according to one of the preceding claims, wherein the fire barrier layer (40) comprises at least one other elastomer, for example an elastomer to improve the implementation, the mechanical properties or the gas impermeability of polychloroprene.
    [10" id="c-fr-0010]
    An antivibration device (100) according to one of the preceding claims, wherein; - Its first frame (10) forms an internal frame; the second armature (20) forms an external armature; and the vibration damping structure (30) is in the form of a laminated elastomer layer (301) / layer of a non-elastomeric material (302) which is stiffer than the efastomer, for example metal , and having a first face (31) fixed to the inner frame (10), a second face (32) fixed to the outer frame (20), a third face (33) extending between the inner frame ( 10) and the outer armature (20) and a fourth face (34), opposite to the third face (33) and also extending between the inner armature (10) and the outer armature (20), said third and fourth faces (33, 34) being therefore non-fixed faces to the inner and outer armatures; the fire barrier layer (40) being moreover located on at least one (34) of the faces (33, 34) not connected to the internal (10) and external (20) reinforcements.
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    同族专利:
    公开号 | 公开日
    EP3220001B1|2019-02-20|
    ES2726723T3|2019-10-08|
    US20170267260A1|2017-09-21|
    CA2961472A1|2017-09-18|
    PL3220001T3|2019-08-30|
    FR3049029B1|2018-03-09|
    HUE043179T2|2019-08-28|
    HUE17161601T1|2019-07-29|
    US11001279B2|2021-05-11|
    TR201907129T4|2019-06-21|
    EP3220001A1|2017-09-20|
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    法律状态:
    2017-02-27| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-22| PLSC| Publication of the preliminary search report|Effective date: 20170922 |
    2018-02-22| PLFP| Fee payment|Year of fee payment: 3 |
    2019-02-26| PLFP| Fee payment|Year of fee payment: 4 |
    2020-02-18| PLFP| Fee payment|Year of fee payment: 5 |
    2021-02-24| PLFP| Fee payment|Year of fee payment: 6 |
    2022-02-22| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1652335|2016-03-18|
    FR1652335A|FR3049029B1|2016-03-18|2016-03-18|ANTIVIBRATION DEVICE FOR FIRE INTENDED FOR RAILWAY APPLICATION|FR1652335A| FR3049029B1|2016-03-18|2016-03-18|ANTIVIBRATION DEVICE FOR FIRE INTENDED FOR RAILWAY APPLICATION|
    EP17161601.4A| EP3220001B1|2016-03-18|2017-03-17|Fire-resistant anti-vibration device intended for a railway application|
    CA2961472A| CA2961472A1|2016-03-18|2017-03-17|Antivibration, fire-resistant device designed for a railway application|
    US15/461,525| US11001279B2|2016-03-18|2017-03-17|Railroad vehicle with fire retardant anti-vibration device|
    HUE17161601A| HUE043179T2|2016-03-18|2017-03-17|Fire-resistant anti-vibration device intended for a railway application|
    TR2019/07129T| TR201907129T4|2016-03-18|2017-03-17|Fireproof anti-vibration device designed for a railway application.|
    ES17161601T| ES2726723T3|2016-03-18|2017-03-17|Anti-vibration device against fire intended for railway application|
    PL17161601T| PL3220001T3|2016-03-18|2017-03-17|Fire-resistant anti-vibration device intended for a railway application|
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