• 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:
    LOADING BEARING ASSEMBLY UNDERSTANDING A STEEL CABLE AND A JACKET. The present invention relates to a load bearing assembly (100) for use in an elevator system, where the load bearing assembly (100) comprises at least one steel cable (102) and a jacket (110) surrounding at least this steel cable (102). The jacket (110) comprises at least one layer of a thermoplastic elastomer comprising polymer particles (112). The 10 polymer particles (112) have a molecular weight greater than 0.5 * 10 (6) g / mol. The jacket (110) provides a coefficient of friction that allows sufficient traction between the load bearing assembly (100) and the other components of the elevator system, such as pulleys. A corresponding method of making a load bearing member is also described
    公开号:BR112014008143B1
    申请号:R112014008143-3
    申请日:2012-10-02
    公开日:2021-02-17
    发明作者:Jeroen Gallens；Raf Clauws；Andreas Klust
    申请人:Bekaert Advanced Cords Aalter Nv；
    IPC主号:
    专利说明:

    [0001] [001] The present invention relates to a load bearing assembly for use in elevator systems. More particularly, the invention relates to a load bearing assembly comprising at least one steel cable comprising steel filaments. At least one steel cable is surrounded by a jacket presenting a matrix of a thermoplastic elastomer with small particles of polymer dispersed in this matrix having a high molecular weight. BACKGROUND TECHNIQUE
    [0002] [002] Elevator systems typically comprise a car and a counterweight that move within an elevator path. A load bearing assembly typically moves over a number of pulleys and supports the load of the cab and counterweight. Typical load bearing assemblies comprise belts or cables.
    [0003] [003] The diameter of the pulleys has a great influence on the service life of the load bearing assembly. Conventionally, pulley diameters D of at least 40 times the diameter of the load bearing assembly d have been used to prevent premature failure.
    [0004] [004] On the other hand, elevator systems with small diameter pulleys require less space and allow the use of lower cost motors.
    [0005] [005] To reduce the diameter of the pulley, two approaches are possible. First, the relationship between the diameter of the pulley D and the diameter of the load bearing assembly d (ratio D / d) can be maintained at reasonably high levels by reducing the diameter of the load bearing assembly. By reducing the diameter of the load bearing assembly, the breaking load will be reduced. This indicates that, in order to meet the requirements of the safety factor, the required number of load bearing assemblies must be increased. Secondly, a lower D / d ratio can be obtained with the development of new load bearing assemblies showing improved resilience to large bending efforts.
    [0006] [006] The use of elastomeric coated steel cables as an elevator cable is well known in the art. Thermoplastic polyurethane (TPU) is commonly used as an elastomeric coating. During use, the elastomeric lining material undergoes major deformations that can result in cracking, particularly when the use of small diameter pulleys produces frequent high bending efforts on the lining material.
    [0007] [007] It is important that the friction coefficient between the load bearing assembly and the other components, such as the pulleys, has a desired level. Some friction is desired to obtain sufficient traction between the load bearing assembly and the other components, such as the pulleys. However, excessive friction can result in undesirable consequences, when the counterweight becomes stuck during the lift operation.
    [0008] [008] WO 2010/019149 describes a load bearing assembly having a polymer coating (for example, TPU) and at least one friction stabilizer to control the desired friction characteristics. DESCRIPTION OF THE INVENTION
    [0009] [009] It is an objective of the present invention to provide a load bearing assembly for use in an elevator system that prevents the disadvantages of the prior art. Another objective of the present invention is to provide a load bearing assembly with a friction coefficient that allows sufficient traction between the load bearing assembly and the other components, such as the pulleys, thus preventing excessive friction. . An additional objective of the present invention is to provide a load bearing assembly provided with a jacket having an adjustable friction coefficient.
    [0010] - pelo menos um cabo de aço, - uma jaqueta que circunda pelo menos parcialmente um dito cabo de aço. A jaqueta compreende pelo menos uma camada de um elastômero termoplástico. A camada de um elastômero termoplástico compreende partículas de polímero apresentando um alto peso molecu-lar. [0010] In accordance with a first aspect of the present invention, a load bearing assembly for use in an elevator system is provided. The load bearing assembly comprises - at least one steel cable, - a jacket that at least partially surrounds said steel cable. The jacket comprises at least one layer of a thermoplastic elastomer. The layer of a thermoplastic elastomer comprises polymer particles having a high molecular weight.
    [0011] [0011] The polymer particles are preferably dispersed in the thermoplastic elastomer layer. The polymer particles can be homogeneously dispersed over the entire thermoplastic elastomer layer or they can be dispersed over a preferred range of the thermoplastic elastomer layer, for example, dispersed near the outer surface of the thermoplastic elastomer layer or dispersed on the outer surface of the layer of thermoplastic elastomer.
    [0012] [0012] In a preferred embodiment, the jacket consists of a thermoplastic elastomer matrix having polymer particles dispersed in at least part of said matrix. The polymer particles can be dispersed over the entire matrix of the thermo-plastic elastomer. Alternatively, the polymer particles can be dispersed over a preferred range of the matrix, for example, near the outer surface of the thermoplastic elastomer layer or on the outer surface of the thermoplastic elastomer layer.
    [0013] [0013] Preferably, the thickness of the jacket is between 0.01 and 2.0 mm at each point of the jacket. The jacket may follow the outer shape of the bare cable or cables, or it may have a rounded shape, such as a slightly rounded shape. The thickness of the jacket, at a certain point, is understood as the shortest distance in a plane perpendicular to the load bearing assembly between the point on the outer surface of the jacket and the nearest metallic point. THERMOPLASTIC ELASTOMER
    [0014] [0014] A thermoplastic elastomer, in principle, any thermoplastic elastomer material, can be chosen. Non-limiting examples of thermoplastic elastomers include styrene block copolymers, polyether ester block copolymers, thermoplastic polyolefin elastomers, thermoplastic polyurethanes and polyether polyamide block copolymers. It is clear that the thermoplastic material will be chosen to suit the needs of the specific situation.
    [0015] [0015] In a preferred embodiment, the jacket comprises thermoplastic polyurethane (TPU). Examples of thermoplastic polyurethanes comprise ether-based polyurethanes, ester-based polyurethanes, ester-ether-based polyurethanes, carbonate-based polyurethane, or combinations thereof. Preferred polyurethanes are polyurethanes showing good resistance to hydrolysis and low temperature flexibility, such as ether-based polyurethanes.
    [0016] [0016] The thermoplastic elastomer can be applied by any technique known in the art, for example, by injection molding, powder coating and extrusion. Preferably, the thermoplastic elastomer is applied by extrusion. POLYMER PARTICLES
    [0017] [0017] The polymer particles are preferably particles having a molecular weight greater than 0.5 * 106 g / mol. More preferably, the polymer particles have a molecular weight ranging between 1 * 106 g / mol and 15 * 106 g / mol, for example, ranging between 1 * 106 g / mol and 10 * 106 g / mol, as , for example, 2 * 106 g / mol, 5 * 106 g / mol or 9 * 106 g / mol. The high molecular weight gives the particles a high viscosity compared to the surrounding thermoplastic elastomer matrix. The result is that the particles remain intact during the coating process.
    [0018] [0018] As polymer particles, any polymer particles having a molecular weight greater than 0.5 * 106 g / mol can be considered. Preferred polymer particles comprise polyethylene particles, more particularly ultra-high molecular weight polyethylene (UHMW-PE) particles. Other possible polymer particles comprise siloxane particles, such as ultra-high molecular weight polydimethylsiloxane particles.
    [0019] [0019] The polymer particles can have any shape, such as a spherical shape or a non-spherical shape, for example, an irregular shape.
    [0020] [0020] The polymer particles preferably have a particle size ranging between 5 and 500 pm. More preferably, the polymer particles have a particle size ranging between 20 and 250 pm or between 50 and 100 pm.
    [0021] [0021] In case the polymer particles are spherical particles, the particle size will correspond to the diameter of the particles. In case the polymer particles are not spherical, the particle size will correspond to the diameter of the sphere that has the same volume as the particle that is considered.
    [0022] [0022] The polymer particles are preferably added in a concentration range between 1 and 20 weight percent. More preferably, the polymer particles are added in a concentration between 2 and 10 weight percent, such as in a concentration of 2 weight percent, 3 weight percent or 5 weight percent.
    [0023] [0023] In addition to the polymer particles, other additives can be added to the thermoplastic material. These additives can include catalysts, wetting agents, coloring agents, crosslinking agents, oxides, stabilizers, antifoaming agents, surfactants, antioxidants, softening agents, plasticizers, fillers and flame retardants. STEEL CABLES
    [0024] [0024] The load bearing assembly may comprise a steel cable. Alternatively, the load bearing assembly may comprise a plurality of steel cables. In case the load bearing assembly comprises a plurality of steel cables, the number of steel cables in a load bearing assembly will preferably vary between 2 and 20 and comprise, for example, 8, 10 or 12 cables. If the load bearing assembly comprises a plurality of steel cables, the steel cables are preferably aligned parallel to the longitudinal axis of the load bearing assembly.
    [0025] [0025] A steel cable comprises countless strands twisted between itself. In preferred embodiments, a steel cable comprises one or more core strands and a number of external strands twisted around the core strand (s).
    [0026] [0026] A "cord" is defined as a plurality of steel filaments that were first braided by at least one braiding and / or bundling operation. A "filament" is defined as an elongated element or yarn. The strings are mounted on a cable in a closing step. The cable thus assembled has a bare cable diameter (that is, bare). The "bare cable diameter" is defined as the diameter of the smallest imaginary circle that circumscribes the bare cable cross section.
    [0027] [0027] The number of filaments in a strand is preferably greater than 3, for example, between 3 and 19, for example, 7 or 19. The filaments can be assembled according to any arrangement known in the art, for example , according to a transversal settlement, according to a Warrington parallel settlement, according to a Seale parallel settlement, or any combination of transversal and / or parallel settlement. It is clear to those skilled in the art that in order to obtain these configurations, different filament diameters must be used.
    [0028] [0028] In the event that the cable comprises core strand (s) and outer strands, the core strand (s) may have the same arrangement as the outer strands or strand (s) core may have a different layout.
    [0029] - quando da tomada de uma seção transversal do cabo nu perpendicular ao cabo, uma certa área dentro do círculo circunscrito externo (com o diâmetro D) não será ocupada por aço e ficará vazia. Esta área será chamada de 'Avazia', - quando da tomada de uma seção transversal do cabo revestido perpendicular ao cabo, uma certa área dos vazios dentro do circulo circunscrito será agora ocupada por um elastômero termoplástico. Esta área será chamada de 'Aelastômero'. O grau de enchimento pode agora ser convenientemente expressado como a relação de Aelastômero a Avazia em porcentagem. De acordo com a invenção, um grau de enchi-mento de 15% é preferido, embora um grau de enchimento acima de 30% seja mais desejável. [0029] Preferably, neighboring external strands do not touch. This can, for example, be realized by choosing the diameter of the core strand (s) and / or by choosing the diameters of the filaments in the core strand (s). Preferably, the gap between the outer strands is at least 0.010 times the diameter of the bare cable. More preferably, the gap between the outer strands is greater than 0.020 times the bare cable diameter or even greater than 0.025 times the bare cable diameter. The opening must be considered in the direction perpendicular to the cord. It is noticed that the opening increases with longer steps. The use of longer steps is therefore favorable to increase the openings. The opening between external strands allows the flow of thermoplastic elastomer through the strands. In this way, the voids between the strands can be filled to a certain 'degree of filling'. The 'degree of filling' can be defined as follows: - when taking a cross section of the bare cable perpendicular to the cable, a certain area within the outer circumscribed circle (with diameter D) will not be occupied by steel and will be empty. This area will be called 'Avazia', - when taking a cross section of the coated cable perpendicular to the cable, a certain area of the voids within the circumscribed circle will now be occupied by a thermoplastic elastomer. This area will be called 'Aelastomer'. The degree of filling can now be conveniently expressed as the ratio of Aelastomer to Avazia in percentage. According to the invention, a degree of filling of 15% is preferred, although a degree of filling above 30% is more desirable.
    [0030] [0030] The filaments used preferably comprise filaments formed from steel, such as high carbon steel or stainless steel.
    [0031] [0031] In a preferred embodiment, the filaments, whether the core filament or the peripheral filaments, are formed of simple carbon steel. Such steel generally comprises a minimum carbon content of 0.40 weight percent C (for example, at least 0.70 weight percent or at least 0.80 weight percent C) with a maximum of 1.1 weight percent C, a manganese content ranging from 0.10 to 0.90 weight percent Mn, the sulfur and phosphorus levels are each preferably kept below 0.030 weight percent. Additional micro alloy elements, such as chromium (up to 0.20 to 0.4 weight percent), boron, cobalt, nickel, vanadium, can also be added.
    [0032] [0032] In an alternative embodiment, the filaments are formed of stainless steel. Stainless steels contain a minimum of 12 weight percent chromium and a substantial amount of nickel. A more preferred stainless steel composition comprises austenitic stainless steels. The most preferred compositions are known in the art as AISI (American Iron and Steel Institute) 302, AISI 301, AISI 304 and AISI 316.
    [0033] [0033] Steel filaments preferably have a tensile strength greater than 1500 N / mm2. More preferably, the tensile strength of the steel filaments is greater than 1700 N / mm2 or even greater than 2400 N / mm2, for example, 3000 N / mm2. The higher the tensile strength, the smaller the steel filament for the same breaking load, or the smaller the cord (s), the smaller the cable or the less the load bearing assembly.
    [0034] [0034] The filaments have a diameter that preferably varies between 0.04 mm and 1.20 mm depending on the application. The different strands of a rope can have the same diameter, although it is not necessary.
    [0035] [0035] The steel cable and / or the filaments and / or the cords can be uncovered or can be coated with a suitable coating. Preferred coatings are, for example, zinc or zinc alloy coatings, such as zinc coatings, brass coatings, zinc-aluminum coatings or zinc-aluminum-magnesium coatings.
    [0036] [0036] To promote the adhesion between the steel and the jacket, optionally, an adhesion promoting agent can be applied on the steel cable and / or on the filming and / or on the cords. Any adhesion promotion agent known in the art can be considered. APPLICATIONS
    [0037] [0037] A load bearing assembly according to the present invention is, in particular, suitable for use in elevator systems, such as traction elevator systems. A load bearing assembly in accordance with the present invention is also suitable for use in hoisting systems, such as hoisting systems in cranes and mine shafts.
    [0038] - prover pelo menos um cabo de aço; - aplicar uma jaqueta de um elastômero termoplástico em torno de pelo menos um dito cabo de aço, o dito elastômero termoplás-tico compreendendo partículas de polímero apresentando um peso mo-lecular maior do que 0,5*106 g/mol. [0038] According to a second aspect of the present invention, a method of manufacturing a load bearing assembly is provided. The method comprises the steps of: - provide at least one steel cable; - applying a jacket of a thermoplastic elastomer around at least one steel cable, said thermoplastic elastomer comprising polymer particles having a molecular weight greater than 0.5 * 106 g / mol.
    [0039] [0039] The jacket can be applied by any technique known in the art, for example, by injection molding, powder coating or extrusion. A preferred technique for applying the jacket is extrusion.
    [0040] [0040] In a preferred method according to the present invention, a number of steel cables are provided. The number of steel cables preferably varies between 2 and 20, preferably between 2 and 12, such as, for example, 8 or 10. A jacket of a thermoplastic elastomer comprising polymer particles is applied around the steel cables. The steel cables are thus aligned parallel to the longitudinal axis of the load bearing assembly. BRIEF DESCRIPTION OF THE FIGURES IN THE DRAWINGS
    [0041] - a Figura 1 é uma ilustração esquemática de uma montagem de mancal de carga de acordo com a presente invenção compreen-dendo um cabo de aço embutido em uma jaqueta; - a Figura 2 é uma ilustração esquemática de uma segunda concretização de uma montagem de mancal de carga de acordo com a presente invenção compreendendo um cabo de aço embutido em uma jaqueta; - a Figura 3 é uma ilustração esquemática de uma montagem de mancal de carga de acordo com a presente invenção compreen-dendo inúmeros cabos de aço paralelos; - a Figura 4 é uma ilustração esquemática de um sistema de teste para determinar a resiliência de uma montagem de mancal de carga. [0041] The invention will now be described in greater detail with reference to the accompanying drawings, in which: Figure 1 is a schematic illustration of a load bearing assembly according to the present invention comprising a steel cable embedded in a jacket; Figure 2 is a schematic illustration of a second embodiment of a load bearing assembly according to the present invention comprising a steel cable embedded in a jacket; Figure 3 is a schematic illustration of a load bearing assembly according to the present invention comprising numerous parallel steel cables; - Figure 4 is a schematic illustration of a test system for determining the resilience of a load bearing assembly.
    [0042] [0042] The present invention will be described with respect to specific embodiments and with reference to certain drawings, but the invention is not limited to them, but only by the claims. The drawings described are only schematic and not limiting. In the drawings, the size of some of the elements may be exaggerated and not drawn to scale for illustrative purposes. The dimensions and the relative dimensions do not correspond to the real reductions to practice the invention.
    [0043] [0043] Figure 1 schematically represents a load bearing assembly 100 suitable for use in an elevator system. The load bearing assembly 100 comprises a steel cable 102 and a jacket 110. The steel cable 102 comprises, for example, a rope of the type 7 x 7 + 7 x 19W. The following cable formula describes the construction of a cable: ((0.34 + 6 x 0.31) + 6 x (0.25 + 6 x 0.25)) + 7 x (0.34 + 6 x 0 , 31 + 6 x 0.33 / 0.25). Steel cable 102 comprises a 7 x 7 core strand and 7 Warrington type 106 outer strands comprising 19 filaments. The outer Warrington strands 106 are surrounding the core strand 104 with a pitch of 5 to 12 times the diameter of the bare steel cable. The 7 x 7 104 core strand comprises 7 individual strands: 1 + 6 strands. Jacket 110 comprises, for example, thermoplastic polyurethane. The material of the jacket at least partially fills the open space between the strands of the cable. In the thermoplastic polyurethane matrix, polymer particles 112 having a high molecular weight are embedded. Polymer particles 112 are, for example, ultra high molecular weight polyethylene (UHMW-PE). The polymer particles 112 preferably have an average molecular weight of 9 * 106 g / mol and an average particle size ranging between 20 * 10-6 m and 150 * 10-6 m.
    [0044] [0044] Figure 2 shows a further embodiment of the load bearing assembly 200. The load bearing assembly 200 comprises a steel cable 202 and a jacket 210. The steel cable 202 comprises, for example, a 7 x 19W type cable. The following cable formula describes the construction of the cable: (0.41 + 6 x 0.41 + 6 x 0.44 / 0.34) + 6 x (0.34 + 6 x 0.34 + 6 x 0, 37 / 0.28). The steel cable 202 therefore comprised seven strands 204, each of which was a Warring-ton strand having 19 filaments. Jacket 210 comprises a thermoplastic urethane matrix and polymer particles 212 dispersed in this matrix. The polymer particles 212 comprise, for example, polyethylene with an average molecular weight of 5 * 106 g / mol and an average particle size ranging between 10 * 10-6 and 60 * 10-6 m.
    [0045] [0045] Figure 3 schematically represents a load bearing assembly 300 suitable for use in an elevator system. A plurality of steel cables 302 are aligned substantially parallel to a longitudinal axis 304 of the load bearing assembly 300. A jacket 310 at least partially surrounds the steel cables 302. The jacket 310 comprises, for example, polyurethane, such as like a thermoplastic polyurethane. Polymer particles 312, such as UHMW-PE particles, are dispersed in the thermoplastic polyurethane.
    [0046] - A amostra A corresponde à montagem de mancal de carga descrita na Figura 1, um cabo apresentando uma jaqueta compreen-dendo partículas de UHMW-PE na jaqueta; - A amostra B corresponde à montagem de mancal de carga descrita na Figura 1; contudo nenhuma partícula UHMW-PE está pre-sente na jaqueta que circunda o cabo de aço. [0046] To determine the resilience of the thermoplastic elastomer under repeated flexing, numerous different load bearing assemblies 401 were tested on an elevator test system 400. A schematic illustration of the test system 400 is shown in Figure 4. The Test system 400 comprises a traction sheave 412 driven by an electric motor and an additional deflection sheave 414. Both sheaves 412, 414 have rounded grooves with a groove radius slightly larger than the diameter of the tested load bearing assemblies 401. During the fatigue tests, the motor drives the load bearing assembly 401 back and forth on both the drive pulley 412 and on the deflection pulley 414. The ends of the tested load bearing assembly 401 they are connected to weights 416, 418 that keep the load bearing assembly 401 under tensile load. The diameter D of both the traction sheave 412 and the deflection sheave 414 is 17.5 times the diameter d of the load bearing assembly. In the test, the D / d ratio is much lower than the conventionally used D / d ratio. The D / d ratio was intentionally chosen as being low to test the load bearing assemblies under extreme conditions. Two different load bearing assemblies were tested: - Sample A corresponds to the load bearing assembly described in Figure 1, a cable with a jacket comprising particles of UHMW-PE in the jacket; - Sample B corresponds to the load bearing assembly described in Figure 1; however, no UHMW-PE particles are present in the jacket surrounding the steel cable.
    [0047] [0047] Sample B showed cracks in the jacket after 80,000 flexion cycles. The polymer jacket in sample 1 showed no damage even after 450,000 bending cycles. In some instances, the service life has been increased by a factor of up to 18.
    [0048] [0048] In order to evaluate the friction characteristics of a thermoplastic elastomer, the friction coefficient (static-sliding friction coefficient) of numerous samples was determined. The friction characteristic was measured by pulling a weight with a polished contact surface over the surface of a thermoplastic elastomer polymer tape. The coefficient of static-sliding friction was determined from the force necessary to start the movement of the weight. Three samples of thermoplastic elastomer were tested. Strips of these thermoplastic elastomers are prepared by extrusion followed by calendering. Sample C comprises an ether-based polyurethane strip with 95A Shore A hardness. In sample C, no polymer particles were added to the ether-based polyurethane. Sample D and sample E comprise the same degree of polyurethane as sample C with 2.5 weight percent and 5 weight percent of added UHMW-PE particles, respectively. The UHMW-PE particles have an average molecular weight of 9x106 g / mole, a particle size between 20 * 10-6 and 150 * 10-6 m. An overview of the static-sliding friction coefficient of the three samples is provided in Table 1.
    [0049] [0049] From Table 1, it is clear that, with the addition of a higher concentration of ultra-high molecular weight polymer particles to the thermoplastic elastomer, the coefficient of static friction between the polymer compound and steel is reduced. However, the coefficient of friction, in case UHMW-PE is used in a concentration of 2.5 percent by weight or 5 percent by weight, will remain high enough to provide sufficient traction for the safe operation of traction elevators.
    [0050] [0050] In accordance with the present invention, it is possible to adjust the coefficient of friction by modifying the content of polymer particles in the thermoplastic elasomer. This allows to provide a controlled slip between the traction sheave and the load bearing assembly during the operation of the elevator, for example. This is, in particular, advantageous to provide a controlled slip between the traction sheave and the load bearing assembly, when the trolley or counterweight is blocked at the end of its travel path, thus preventing the cable from loosening and fracture of the cable in case the drive motor does not stop.
    权利要求:
    Claims (10)
    [0001]
    Load bearing assembly (100, 200, 300) for use in an elevator system, comprising: - at least one steel cable (102, 202, 302), - a jacket (110, 210, 310) surrounding said at least one steel cable (102, 202, 302), said jacket (110, 210, 310) comprising at least one layer of a thermoplastic elastomer, characterized by the fact that said at least one layer of a thermoplastic elastomer comprises polymer particles (112, 212, 312) and said polymer particles (112, 212, 312) have a molecular weight greater than 0.5 * 106 g / mol.
    [0002]
    Load bearing assembly (100, 200, 300), according to claim 1, characterized by the fact that said polymer particles (112, 212, 312) have a molecular weight ranging between 0.5 * 106 g / mol and 15 * 106 g / mol.
    [0003]
    Load bearing assembly (100, 200, 300) according to claim 1 or 2, characterized in that said polymer particles (112, 212, 312) have a particle size ranging between 5 * 10 -6 m and 250 * 10-6 m.
    [0004]
    Load bearing assembly (100, 200, 300) according to any one of the preceding claims, characterized in that said polymer particles (112, 212, 312) comprise polyethylene particles or siloxane particles.
    [0005]
    Load bearing assembly (100, 200, 300), according to any one of the preceding claims, characterized by the fact that said thermoplastic elastomer is selected from the group consisting of styrene block copolymers, polyether block copolymers. ester, thermoplastic polyolefin elastomers, thermoplastic polyurethanes and polyether-polyamide block copolymers.
    [0006]
    Load bearing assembly (100, 200, 300) according to any one of the preceding claims, characterized by the fact that said cable (102, 202, 302) comprises numerous strands twisted together, said strands comprising filaments of steel.
    [0007]
    Load bearing assembly (100, 200, 300) according to any one of the preceding claims, characterized in that said load bearing assembly comprises a cable encircled by said jacket (110, 210, 310).
    [0008]
    Load bearing assembly (100, 200, 300) according to any one of claims 1 to 6, characterized in that said load bearing assembly comprises at least two steel cables (102, 202, 302) , at least two steel cables aligned parallel to the longitudinal axis of said load bearing assembly (100, 200, 300).
    [0009]
    Method of manufacturing a load bearing assembly (100, 200, 300) as defined in any one of claims 1 to 8, said method characterized by the fact that it comprises the steps of: - provide at least one steel cable (102, 202, 302); - applying a jacket (110, 210, 310) of a termoplastic elastomer around at least one steel cable (102, 202, 302), said thermoplastic elastomer comprising polymer particles (112, 212, 312) having a molecular weight greater than 0.5 * 106 g / mol.
    [0010]
    Method according to claim 9, characterized by the fact that numerous steel cables (102, 202, 302) ranging from 2 to 20 are provided, and in which a jacket (110, 210, 310) of a thermoplastic elastomer comprising polymer particles (112, 212, 312) is applied around said steel cables (102, 202, 302).
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    法律状态:
    2018-03-27| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2018-04-10| B25A| Requested transfer of rights approved|Owner name: BEKAERT ADVANCED CORDS AALTER NV (BE) |
    2019-08-06| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-12-08| B09A| Decision: intention to grant|
    2021-02-17| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/10/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11184984.0|2011-10-13|
    EP11184984|2011-10-13|
    PCT/EP2012/069457|WO2013053621A1|2011-10-13|2012-10-02|A load bearing assembly comprising a steel rope and a jacket|
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