• 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 a rope (1) made of textile fiber material, which is characterized by the combination of measures that a) the load-bearing fiber material of the rope (1) consists of high-strength plastic fibers b) the rope (1) is in the form of a spiral strand rope c) the cable (1) has at least two, preferably at least three concentric load-bearing strand layers (3, 4, 5) d) the individual strands (7, 8, 9, 10, 11, 12) of the strand layers (3, 4, 5) against each other e) the degree of filling of the rope (1) on textile fiber material is ≥ 75%, preferably ≥ 85% and e) the outermost layer (5, 6) of the rope has a coefficient of friction μ with respect to steel of μ <0.15.
    公开号:AT516444A1
    申请号:T50808/2014
    申请日:2014-11-05
    公开日:2016-05-15
    发明作者:Rudolf Dipl Ing Kirth；Björn Dr Ing Ernst；Erich Ing Rührnössl；Robert Ing Traxl；Peter Dipl Ing Baldinger；Gunther Dipl Ing Fh Kaiser
    申请人:Teufelberger Fiber Rope Gmbh；
    IPC主号:
    专利说明:

    Rope made of textile fiber material
    The invention relates to a rope made of textile fiber material and its use.
    Ropes made of textile fiber material, for example synthetic fiber ropes, are used for numerous applications. Particularly in the field of conveyor technology, high-strength fiber ropes are already superior to the previously exclusively used or available steel ropes due to several advantages.
    In elevator technology, where the drive is via traction sheaves, the advantages of the high-strength fiber rope are that the drives can work with a smaller ratio of pulley diameter to rope diameter than steel cables, since the fiber ropes this unlike steel cables without major disadvantages, such as Loss of life, allow. This results in the possibility of using smaller sizes of traction sheave drives, resulting in space and cost savings.
    In addition, a high-strength fiber rope depending on the fiber material compared to a steel cable has a 4-6fach lighter weight, which has a favorable effect especially at high elevator heights. By means of suitable measures, it is moreover possible to achieve a higher number of permissible bending cycles in the case of high-strength fiber ropes, which results in a longer service life, ie life of the rope, compared to steel ropes. For the elevator technology, the development of these ropes was specially geared to an optimum traction sheave drive with the highest possible friction coefficient between traction sheave and hoist rope. The known elevator fiber ropes are designed in a variety of constructions, they usually have a sheath of Fitzen and a plastic sheathing of the complete rope. The sheathing is designed in such a way that it permanently withstands the load on pulleys via pulleys and in particular traction sheaves.
    Such high-strength fiber ropes for use in traction sheave elevator drives are known, for example, from EP 0 672 781 B and EP 0 934 440 B.
    Lifting applications in lifting technology, such as tower cranes, mobile cranes, crawler cranes, etc., do not use traction sheave drives but drum drives with multi-layered rope drums. Compared with the traction sheave drives, the drum drives have the added benefit of being able to store and store the rope length that is not required in an orderly manner. This is not the case with the traction sheave drive, since in elevator technology the entire rope length between the car and the counterweight is used and thus no storage function is necessary. Drum drives in lifting technology also have a significantly higher lifting potential than traction sheave drives. For operation on a multi-layer wound drum drive, a controlled, trouble-free and stable drum winding ("winding pyramid") over all cable layers is of fundamental importance. Under undisturbed Trommelbewicklung is a winding without gaps ("blocking") between adjacent turns of the same winding layer ("winding jump") without cutting the rope into the underlying winding layers and without rising of the rope on the flange outside the designated pitch zones understood. Stable drum winding is understood to mean little deformation of the winding package under load during the period of operation. For a multi-layer winding on drums ropes of known for the traction sheave design and design, however, are not suitable because of the winding in a short time rope damage occurs. It comes in the multi-layer winding to strong cross-sectional deformation of the deposited on the drum rope when it is also loaded radially by layers deposited under load in addition to the longitudinal load. These cross-sectional deformations lead to a significantly increased material wear and disturbances in the winding pattern, since the upper cable layers can not be supported in an orderly manner on the lower cable layers deformed under radial load.
    In addition, the high coefficient of friction of the cable surface in the multi-layer winding, which is necessary for traction sheave drives, additionally has a negative effect, since in the multi-layer winding rope is wound over the rope and, in the event of changes in the traction force, i. when picking up or setting down load, rope slides on rope. Due to the high friction and the load due to multi-layer winding, the sheathing of the rope breaks and dissolves very quickly and the rope must be laid down.
    EP 0 995 832 B proposes for use for drive discs and cable drums before a rope of aramid fibers, which consists of at least two Litzenlagen, which are twisted to the spiral rope, the individual strand layers are separated from each other by an intermediate layer and the outer strand layer with the it is stranded in adjacent direction of impact adjacent inner strand layer. The strike length ratio of the recoil stranding is 1.5 to 1.8.
    According to EP 1 010 803 B, the various strand layers of a synthetic fiber rope are matched to one another in such a way that their mutually oppositely directed torques cancel each other out.
    From EP 1 930 497 B a synthetic fiber rope is known, which is equipped with a two-layer, different colored cable sheath, so that the degree of wear of the rope can be visually checked.
    EP 1 004 700 B describes a synthetic fiber rope with several layers of strands, the strands of the outermost layer being surrounded by a coating for protection against abrasion and damaging environmental influences.
    In US 4,022,010 a high strength synthetic fiber rope is described, which consists of at least one Kemkomponente of elastic plastic material and the core enveloping twisted high-strength plastic fibers, wherein the core is pre-stretched and core and lasers are impregnated with an abrasion-resistant plastic material.
    EP 0 252 830 B1 describes a synthetic fiber rope which has a central radially elastic core. The rope is continuously impregnated to the inside of the game with a binder.
    Further prior art is known from the documents DE 202011001846 Ul, DE 202001001845 Ul, DE 20 2010006145 U1, WO 2009/026730 A1, DE 202010005730 U1, EP 0 731 209 A1, EP 1 930 496 A2, GB 2,152,088 A, DE 2 853 661 C2, EP 1 111 125 A1, EP 1 461 490 A1, EP 1 657 210 A1, EP 1 930 497 A1, EP 1 371 597 A1, EP 0 117 122 A1, WO 2012/146380 A2 and US Pat. No. 4,095,404 known.
    The invention has as its object to provide a rope of textile fiber material for lifting applications, which can be used with drum drives and overcomes the aforementioned disadvantages of the prior art. In particular, the rope should have a comparable life with steel ropes durability and capacity.
    This object is achieved by a rope made of textile fiber material with the features specified in claim 1. Preferred embodiments are given in the subclaims.
    KT IR ZF DESCRIPTION OF THE FIGURES
    Figure 1 shows a cross section of a preferred embodiment of the rope according to the invention.
    FIG. 2 shows a perspective view of a preferred embodiment of the cable according to the invention.
    FIG. 3 shows a perspective view of a further preferred embodiment of the cable according to the invention.
    Figure 4 shows schematically an apparatus for determining the friction coefficient.
    DETAILED DESCRIPTION OF THE INVENTION
    It has been found that a rope made of textile fiber material with the feature combination described in claim 1 is outstandingly suitable for solving the problems described above in rope applications with drum drive.
    The term "rope of textile fiber material" means that the essential components of the rope, in particular its supporting elements of textile fiber material, such as. Strands of synthetic fibers. The rope of the invention may also comprise components of other materials, e.g. a core of non-textile material, a sheath of non-textile material, the rope or rope components impregnating materials or even individual non-textile strands with special function, e.g. for transmitting electrical signals.
    Preferably, the entire rope, both in terms of load-bearing and non-load-bearing components, consists of textile fiber material.
    The rope according to the invention is characterized by the combination of the following measures: a) the load-bearing fiber material of the rope consists of high-strength plastic fibers b) the rope is in the form of a spiral strand rope c) the rope has at least two, preferably at least three concentric load-bearing strand layers d) the individual strands of the strand layers are movable relative to each other e) the degree of filling of the rope on the fiber material is &gt; 75%, preferably &gt; 85% f) the outermost layer of the rope has a coefficient of friction μ with respect to steel of μ &lt; 0.15 on.
    It has been found that ropes with this combination of measures have very good resistance to the requirements, in particular in drum drive applications.
    The high-strength fiber rope described here has optimum conditions for a multi-layer winding of drums in cable drives, in particular for applications in which steel cables were previously used. In addition, the rope according to the invention in addition to the optimum conditions for the multi-layer winding of drums meets all requirements for high bending fatigue strength and high breaking strength.
    Comparative tests with commercially available steel cables under identical conditions (such as on the test bench according to Publication No. WO 2012/146 380) have shown that the cable according to the invention has a significantly longer cable life in comparison with the steel cable and other conventional fiber cables.
    To the individual measures:
    Measure a)
    The load-bearing fiber material of the rope according to the invention consists of high-strength plastic fibers. For the purposes of the present invention, "high strength" refers to fibers having a tensile strength of at least 14 cN / dtex, preferably a tensile strength of more than 24 cN / dtex, more preferably greater than 30 cN / dtex. As high strength fiber types with corresponding tensile strengths, e.g. UHMWPE fibers (Dyneema®), aramid fibers, LCP fibers and PBO fibers are known. Preferably, the entire load-bearing fiber material of the rope consists of UHMWPE fibers.
    By "load-bearing fiber material" is meant that part of the fiber material of the rope which contributes to absorbing the tensile forces occurring during the application of the rope.
    Measures b) and c)
    The cable according to the invention is in the form of a Spirallitzenseiles. First, the textile fiber material is placed into a strand, turned or braided. Several of these strands are twisted together in several layers to form a rope. The strand layers may consist of different fiber materials in relation to each other, have different diameters, different numbers of strands, different directions of impact and different impact angles. Also within the individual strand layers different fiber materials and strands can be provided with different diameters.
    In particular, the cable according to the invention has at least two, preferably at least three concentric load-bearing strand layers. In this case, the respective outermost layer of strands preferably has the direction of impact opposite to the direction of impact of the inner layers of strands.
    By "load-bearing strand layers" it is to be understood that the strand layers in their entirety contribute to the absorption of the tensile forces occurring during the application of the rope. Of course, a strand layer contain strands that are not designed to be load-bearing on its own. Similarly, a strand, even if it acts load-bearing, partially contain materials that do not load bearing.
    Measure d)
    The individual strands of Litzenlagen are movable against each other. It is known in the art for ropes in traction sheave applications (e.g., EP 0 995 832) to fill the spaces between the strands and braid layers with an elastically deformable intermediate material. As a result, the individual strands or strand layers are not movable relative to each other. It has been found that this arrangement is disadvantageous, in particular for drum-driven applications, and mutual mobility of the strands against one another increases the resistance of the cable.
    Measure e)
    The degree of filling of the rope on textile fiber material is &gt; 75%, preferably &gt; 85%. It has been found that a high degree of filling of the rope to fiber material, that is a very dense arrangement of the fiber material, both in terms of solving the above-described problems in the application as well as in terms of the life of the rope itself is important.
    The degree of filling of the rope on textile fiber material is determined by the measuring method described in detail below. It comprises all load bearing as well as non load bearing textile elements of the rope, e.g. also a core of textile fiber material or a sheath of textile fiber material.
    Conventional fiber ropes have a filling level of textile fiber material of up to 60%. In particular, by the construction described here of the rope as Spirallitzenseil and other measures described below, very high degrees of filling of 75% and more or even 85% or more can be achieved in the cable according to the invention.
    The rope according to the invention also has a low content of non-textile binding and impregnating agents. This proportion is 10% by weight or less, preferably 5% by weight or less, in each case based on the total mass of the rope.
    Measure f)
    The outermost layer of the rope according to the invention has a coefficient of friction μ with respect to steel of μ &lt; 0.15 on.
    For ropes for applications with traction sheave drive is known that the outermost layer of the rope (in particular a jacket) has a high coefficient of friction to allow the corresponding adhesion to the drive wheel.
    According to the invention it has been shown that for applications, in particular with drum drive, a low coefficient of friction of the outermost layer of the cable compared to steel is favorable. The outermost layer of the rope is a jacket surrounding the rope or, if no jacket is provided, the outermost layer of strands.
    The friction coefficient of the outermost layer to steel is determined according to the measurement method given below.
    In a preferred embodiment of the present invention, the cable is surrounded by a sheath, wherein, as explained above, the sheath surrounding the cable has a coefficient of friction μ against steel of μ &lt; 0.15.
    The Spirallitzenseil invention is protected by the jacket from external influences such as abrasion, penetration of particles, ultraviolet radiation, etc.
    This jacket can be made of textile fiber material, but also other materials and be wound, laid, braided or extruded. The low coefficient of friction of the jacket ensures very good sliding properties in multi-layer winding.
    In a further preferred embodiment of the rope according to the invention, the strand layers are coordinated so that the rope is substantially free of rotation under load.
    According to Feyrer, wire ropes. Design, operation, safety. Springer Verlag, Berlin, Heidelberg, New York, 2000, p. 115, a rope is considered to be rotation-free if the twist angle per rope length remains smaller during the tensile load of S / d 2 = 0 N / mm 2 to S / d 2 = 150 N / mm 2 as &lt; ± 360 ° / 1000d.
    The stability of the rope against twisting during operation is important. Due to the helix shape of the strands in the rope resulting from the impact process, each strand layer develops a torque under tensile load. According to the preferred embodiment, the Litzenlagen the rope according to the invention in diameters, cross-sectional proportions and impact angles are coordinated so that the Litzendrehmomente cancel each other under load and the Spirallitzenseil is torque-free in this way.
    A further preferred embodiment of the rope according to the invention is characterized in that the ratio of the lay length of one of the strand layers to the lay length of the strand layer adjacent to the cable center is less than 1.5, preferably 0.7 to 1.0, particularly preferably 0.8 to 0, 9 amounts to.
    It is known from the prior art of fiber ropes for traction sheave applications (e.g., EP 0 995 832) to provide the lay length of one strand layer each significantly greater, especially at a ratio of 1.5 or more, to the lay length of the underlying strand layer.
    In contrast, it has been found according to the invention that it is advantageous if the ratio of the lay length of at least one of the strand layers to the lay length of the strand layer adjacent to the cable center is less than 1.5, preferably 0.7 to 1.0, particularly preferably 0.8 to 0, 9 amounts to. This applies in particular to the ratio of the lay length of the outermost layer of strands to the adjacent inner layer of strands. Particularly preferred is a structure of the rope with three layers of strands, in which the ratio of the lay length of the outermost layer of strands to the center strand layer is 1.0 or less. In this embodiment, the ratio of the lay length of the middle strand layer to the innermost strand layer may be 1.0 to 2.0.
    As shown above, the rope according to the invention has a high degree of filling of textile fiber material. The high degree of filling can be achieved by the described construction of the rope as Spirallitzenseil and additionally by one or more of the following measures:
    The fiber material of the rope can be compacted, for example by rolling, rolling, hammering.
    The fiber material of the rope may preferably be stretched by more than 15% of its breaking strength, more preferably by 35% to 55% of its breaking force.
    The fiber material of the rope can be subjected to a heat treatment in which the fiber material is heated for a defined period of time to a defined temperature and finally defined from cooled. This process can also be performed several times.
    In all three variants described (which may be used individually or in combination), the measures described in each case on the entire finished rope (with or without coat), on the individual strands of the rope and / or on the stranding materials, such as Yarns or threads are made.
    By means of the measures described, settlement effects occurring later in operation are anticipated and, in particular, the degree of filling is significantly increased, since the fibers optimally rest against one another and cavities unavoidably created during stranding are eliminated.
    Furthermore, the actual breaking load is significantly increased, since length and load differences between individual strands and fibers are homogenized.
    In a further preferred embodiment of the present invention, the load-bearing strands of the rope are each provided individually with a sheath. The yarns forming the strand can also be surrounded individually or in groups with an enveloping layer. This strand-wrapping layer can be, for example, a winding, a braid, a scrim or an extruded layer and protects the strands from the stress during operation of the rope.
    Furthermore, the friction coefficients between fibers and fins as well as Spirallitzenseil and protective sheath can be selectively adjusted by targeted addition of excipients on bitumen-based and / or silicone-based in the production of high-strength fiber rope and stability against the stress during operation of the rope can be further increased.
    Another aspect of the present invention relates to the use of the rope of the invention as a load rope for drum driven applications. In particular, the rope according to the invention is outstandingly suitable as a hoisting rope, adjusting cable or traction cable.
    The rope according to the invention may have a diameter of 6 mm to 200 mm and more.
    Preferred embodiments of the present invention are explained below with reference to the figures.
    measurement methods
    FILLING DEGREE
    Before determining the degree of filling, determine: • the actual rope diameter d • the actual rope weight m of textile fiber material
    Rope diameter
    The determination of the rope diameter d takes place in the de-energized state at three 100 mm apart dihedral planes in two mutually perpendicular (90 °) directions. If the cable cross-section is not circular, determine the maximum and minimum diameters in each section. The cable cross section must not be subjected to any deformation during the measurement.
    The rope diameter d shall be determined and used as the arithmetic mean of the six measured values to a minimum of 0.01 mm.
    Rope weight m
    The determination of the rope weight m shall be carried out and used in accordance with ISO 2307: 2010, 9.8 "Fineness / linear mass". For the reference voltage (ISO 2307: 2010 Annex A), always use the next larger nominal diameter of the table.
    The conditioning according to ISO 2307: 2010, 8 must be fulfilled.
    Any existing non-textile components must be removed.
    Density p
    The density p of the textile rope material is set at 1.4 g / cm3 for the purposes of the present invention.
    The degree of filling should be determined as follows:
    with f = filling degree in% m = specific rope weight of the textile components in g / m determined according to ISO 2307: 2010, 9.8 d = rope diameter in mm
    FRICTION COEFFICIENT
    Measuring device:
    The rope is pulled over a standing metal disc with a flat surface (no scoring). Due to the friction of the rope to be tested, the disc is taken more or less strongly. The disc is fixed, a load cell measures the force, which is caused by the entrainment by the rope to be tested. The measuring device is shown schematically in Fig. 4.
    The surface of the disc must be flat (no scoring) and must have a maximum mean surface roughness of RÄ &lt; Have 0.2 μ m.
    measurement methods
    Before each test, the surface of the glass should be cleaned with alcohol.
    The rope is clamped on the tension side.
    The rope is loaded with constant load M on the load side.
    The rope must rest on the center of the disc.
    The measuring device is tared to 0.
    The rope is pulled off at constant speed v = 0.05 m / s on the tension side.
    The constant tensile load S2 occurring during the pulling process must be measured with an accuracy of ± 3%.
    coefficient of friction
    The friction coefficient is to be determined as follows:
    with μ = friction coefficient ln = natural logarithm with base e S2 = traction on tension side S1 = traction on weight side α = angle of wrap of the rope on the wheel in radian measure
    DETAILED DESCRIPTION OF THE FIGURES
    FIG. 1 shows a cross-section of a preferred embodiment of the cable 1 according to the invention. FIG. 2 shows a perspective view of the cable 1.
    The rope 1 contains a core 2 of preferably textile fiber material. To the core 2, three concentric Litzenlagen 3, 4 and 5 are provided, each consisting of several strands and are stranded together in the form of a Spirallitzenseiles.
    In the embodiment shown, the innermost strand layer 3 consists of 5 strands, of which two strands are denoted by the reference numerals 7 and 8 in the figure. The middle strand layer 4 consists of 12 strands, of which in the figures two strands are denoted by the Bezugsziffem 9 and 10. The outermost strand layer 5 consists of 19 strands, of which two strands are denoted by the reference numerals 11 and 12 in the figures.
    The fiber material of the strands consists essentially of high-strength plastic fibers, such as e.g. UHMWPE fibers, aramid fibers, LCP fibers or PBO fibers.
    To the outermost strand layer 5, a jacket 6 is provided in the illustrated embodiment. But it can also represent the outermost strand layer 5, the outermost layer of the rope. The jacket 6 has a coefficient of friction μ with respect to steel of μ &lt; 0.15 and is preferably made of textile fiber material, e.g. UHMWPE manufactured. If no sheath 6 is provided, then the fiber material of the outermost strand layer 5 has a correspondingly low coefficient of friction μ.
    In the illustrated embodiment, all the strands 7, 8, 9, 10, 11, 12 and also the core 2 are provided with an envelope, which is indicated in the ligaments 2 and 3 for a strand with the reference numeral 13.
    The strand layers 3, 4 and 5 are movable against each other and also relative to the core 2 and the sheath 6. Likewise, the individual strands 7, 8, 9, 10, 11, 12 are mutually movable.
    As can be seen in particular from Ligur 2, in particular the outermost strand layer 5 and the middle strand layer 4 are stranded together in the opposite direction of impact.
    The degree of leaching of the rope on textile laser material is 85% (not apparent from the schematic representations of the Ligures).
    The ratio of the lay lengths of the individual layers of strands to each other is not shown in the ligures, but is in particular in the case of the outermost layer of strands (5) to the middle strand layer (4) preferably 1.0 or less.
    FIG. 3 shows the perspective view of a cable 1 with an otherwise analogous construction to the cable 1 shown in FIGS. 1 and 2, only two strand layers 3 and 4.
    权利要求:
    Claims (8)
    [1]
    Claims 1. A rope (1) of textile fiber material, characterized by the combination of the measures that a) the load-bearing fiber material of the rope (1) consists of high-strength synthetic fibers b) the rope (1) is in the form of a spiral strand rope c) the rope (1) has at least two, preferably at least three concentric load-bearing Litzenlagen (3,4,5) d) the individual strands (7,8,9,10,11,12) of the Litzenlagen (3,4,5) against each other are movable e) the degree of filling of the rope (1) on textile fiber material &gt; 75%, preferably &gt; 85% e) the outermost layer (5, 6) of the rope has a coefficient of friction μ against steel of μ &lt; 0.15.
    [2]
    2. Rope (1) according to claim 1, characterized in that the cable (1) is surrounded by a jacket (6), the jacket (6) having a coefficient of friction μ with respect to steel of μ &lt; 0.15.
    [3]
    3. rope (1) according to claim 1 or 2, characterized in that the Litzenlagen (3,4,5) are coordinated so that the rope (1) is substantially free of rotation under load.
    [4]
    4. Rope (1) according to one of the preceding claims, characterized in that the ratio of the lay length of one of the Litzenlagen (5) to the lay length of the adjacent cable towards the middle strand layer (4) less than 1.5, preferably 0.7 to 1, 0, more preferably 0.8 to 0.9.
    [5]
    5. rope (1) according to one of the preceding claims, characterized in that the fiber material of the rope (1) is compacted.
    [6]
    6. rope (1) according to one of the preceding claims, characterized in that the fiber material of the rope (1) is stretched by more than 15% of its breaking strength, preferably by 35% to 55% of its breaking force.
    [7]
    7. rope (1) according to one of the preceding claims, characterized in that the load-carrying strands (7,8,9,10,11,12,13) of the rope (1) are each provided individually with a sheath (13).
    [8]
    8. Use of a rope (1) according to one of the preceding claims as a load rope for applications with drum drive.
    类似技术:
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    DE102011053202A1|2013-03-07|elevator rope
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    DE202013102914U1|2013-08-20|elevator rope
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    DE102009056550B4|2011-07-28|Suspension for lifting equipment
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    同族专利:
    公开号 | 公开日
    EP3215671B1|2019-09-11|
    US10472765B2|2019-11-12|
    US20170328001A1|2017-11-16|
    EP3215671A1|2017-09-13|
    KR20170077139A|2017-07-05|
    ES2760534T3|2020-05-14|
    AT516444B1|2016-09-15|
    WO2016071184A1|2016-05-12|
    PT3215671T|2019-12-18|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50808/2014A|AT516444B1|2014-11-05|2014-11-05|Rope made of textile fiber material|ATA50808/2014A| AT516444B1|2014-11-05|2014-11-05|Rope made of textile fiber material|
    ES15787576T| ES2760534T3|2014-11-05|2015-10-28|Textile fiber material rope|
    EP15787576.6A| EP3215671B1|2014-11-05|2015-10-28|Rope made of textile fibre material|
    KR1020177011505A| KR20170077139A|2014-11-05|2015-10-28|Rope made of textile fibre material|
    PT157875766T| PT3215671T|2014-11-05|2015-10-28|Rope made of textile fibre material|
    US15/524,569| US10472765B2|2014-11-05|2015-10-28|Rope made of textile fiber material|
    PCT/EP2015/075032| WO2016071184A1|2014-11-05|2015-10-28|Rope made of textile fibre material|
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