• 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:
    TAPE AND METHOD FOR THE MANUFACTURE OF A TAPE. A tape and a method for making that tape are provided. The tape includes a plurality of tension members and a longitudinally extending coating. The coating substantially retains the plurality of tension members. The coating has a first lateral region, a second lateral region and a central region between the first and the second lateral region. The first and second side regions of the coating are more fire retardant than the central region of the coating.
    公开号:BR112015000948B1
    申请号:R112015000948-4
    申请日:2012-07-18
    公开日:2020-12-22
    发明作者:Mark F. Orelup；Brad Guilani；Kathryn Rauss Sherrick；Amir Lotfi；Hong Yang
    申请人:Otis Elevator Company；
    IPC主号:
    专利说明:

    1. Technical field
    [001] The present invention relates to tapes and more particularly to fire resistant tapes used, for example, in elevator systems. 2. Information on the Basics
    [002] Conventional traction lift systems include a trolley, a counterweight, two or more ropes connecting the car and the counterweight, and a traction machine and pulley to move the cords. The strings were conventionally formed of steel wires forming strands, the strands then forming the cables, and the cables then forming the strings.
    [003] Although conventional strings are proven to be very reliable and economical, in recent years tapes have been used as an alternative to conventional strings. Some tapes have been designed with a plurality of steel cables covered by a thermoplastic coating to suspend and / or lift the elevator car. Fire retardant thermoplastic coating compositions have been used to resist or minimize any burning of the thermoplastic coating. It has been found, however, that even when using fire retardant thermoplastic coating compositions, fire spreads more quickly along a narrow edge or corner of the coating than over a flat surface of the wide coating. What is needed, therefore, is an improved tape aimed at this problem. SUMMARY OF THE DISCLOSURE
    [004] According to one aspect of the invention, a tape is provided. The safety tape includes a plurality of longitudinally extending tension members and a liner. The coating substantially retains the plurality of tension members. The coating has a first lateral region, a second lateral region and a central region between the first and the second lateral region. The first and second side regions of the coating are more fire retardant than the central region of the coating.
    Alternatively or in addition to this or other aspects of the invention, the coating further includes a first side surface opposing a second side surface, the first and second side surfaces extending between a first traction surface and a second traction surface.
    [006] Alternatively or in addition to this or other aspects of the invention, a width distance between the first and the second side surface is greater than a height distance between the first and the second traction surface.
    [007] Alternatively or in addition to this or other aspects of the invention, the first side region is contiguous with the first side surface, and the second side region is contiguous with the second side surface.
    [008] Alternatively or in addition to this or other aspects of the invention, the first and second side region of the coating has a higher concentration of fire retardant material than the central region.
    [009] Alternatively or in addition to this or other aspects of the invention, the first and second side regions of the coating each include a first fire retardant material and the central region of the coating includes a second fire retardant material, and in which the first material fire retardant is more fire retardant than the second fire retardant material.
    Alternatively or in addition to this or other aspects of the invention, the first and second side region of the coating has a higher concentration of fire retardant material than the central region of the coating.
    [0011] Alternatively or in addition to this or other aspects of the invention, the first lateral region is defined by the first lateral surface, the first and the second surface of the traction, and a first lateral boundary region that extends between the first and the second surface traction.
    [0012] Alternatively or in addition to this or other aspects of the invention, the first lateral region is defined by a wide distance between the first lateral surface and the first limit of the lateral region.
    [0013] Alternatively or in addition to this or other aspects of the invention, the first lateral region is defined by a plurality of width distances between the first lateral surface and the first limit of the lateral region.
    [0014] Alternatively or in addition to this or other aspects of the invention, the second lateral region is defined by the second lateral surface, the first and the second surface of the traction, and a second lateral boundary region which extends between the first and the second surface traction.
    Alternatively or in addition to this or other aspects of the invention, the second side region is defined by a wide distance between the second side surface and the second side region limit.
    Alternatively or in addition to this or other aspects of the invention, the second side region is defined by a plurality of width distances between the second side surface and the second side region limit.
    [0017] Alternatively or in addition to this or other aspects of the invention, the coating includes one or more woven fibers.
    Alternatively or in addition to this or other aspects of the invention, the one or more woven fibers of the coating have fire retardant properties.
    [0019] Alternatively or in addition to this or other aspects of the invention, the fire retardant material is applied to one or more woven fibers of the coating.
    [0020] Alternatively or in addition to this or other aspects of the invention, the coating defines at least one blunt edge.
    [0021] Alternatively or in addition to this or other aspects of the invention, the coating is at least partially arc-shaped.
    [0022] According to one aspect of the invention, a method for making a tape is provided. The method includes the steps of: (1) providing a plurality of tension members extending longitudinally; and (2) covering the plurality of tension members with a coating. The coating having a first lateral region, a second lateral region and a central region, extending between the first and the second lateral region. The first and second side regions of the coating are more fire retardant than the central region of the coating.
    [0023] These and other objects, characteristics and advantages of the present invention will become more evident, taking into account the following detailed description of their preferred modalities, as illustrated in the attached figures. BRIEF DESCRIPTION OF THE FIGURES
    [0024] Fig. 1 is an illustration of a traction lift system.
    [0025] Fig. 2 is a sectional view of a tape modality.
    [0026] Fig. 3 is a cross-sectional view of a tape modality.
    [0027] Fig. 4 is a cross-sectional view of a tape modality.
    [0028] Fig. 5 is a sectional view of a one-way tape. DETAILED DESCRIPTION OF THE INVENTION
    [0029] Fig. 1 illustrates an exemplary traction elevator system 10 that could use the present invention. The elevator system 10 includes a carriage 12, a counterweight 14, a traction unit 16 including a machine 18 and a traction sheave 20 and a ribbon 22. Traction unit 16 moves the ribbon 22 interconnecting the trolley 12 and counterweight 14 using the traction sheave 20. The tape 22 engages with the sheave 20 so that the rotation of the sheave 20 moves the tape 22 and, thus, the carriage 12 and the counterweight 14. Although Fig. 1 shows a elevator system with a 1: 1 rope arrangement, other elevator systems (for example, with a 2: 1 rope arrangement, etc.) could be used.
    [0030] Fig. 2 - 5 illustrate several possible modalities of the tape 22. In each modality, the tape 22 is defined by a length, extending along an x axis, a width extending along an axis y height extending along a z axis. Fig. 2 - 5 each illustrates the y-axis and the z-axis. In Fig. 2 - 5, the x-axis extends in and out of the page. The tape 22 includes a plurality of tension members 24 extending longitudinally covered by a liner 26. The tension members 24 are the main elastic load of the tape structure 22. In some embodiments, liner 26 does not support the weight of the carriage elevator 12 or counterweight 14 at all. However, even in such embodiments, the liner 26 forms part of the loading path; that is, the liner 26 transmits tensile forces between the traction sheave 20 and the belt 22 to the pullers 24. The tension members 24 can be arranged generally parallel to each other. In each of Figs. 2-5, tape 22 is shown to have four tension members 24. In other embodiments, tape 22 may have more than four tension members 24 or less than four tension members 24. The liner 26 substantially retains the tension members 24 in a desired position and orientation with respect to each other. The phrase "substantially retain," means that the liner 26 sufficiently engages the tension members 24 so that the tension members 24 do not pull out of the liner 26 and remain substantially stationary with respect to the liner 26 during use (e.g. when the tape 22 is subjected to a load found during the use of the elevator system 10). In some embodiments, the liner 26 completely covers the tension members 24. In other embodiments, the liner 26 may only partially cover the tension members 24.
    [0031] The tension members 24 can be coiled steel cable. The tension members 24 are not limited to coiled steel cable, however and as an alternative they can be any other material or structure operable to load a load in a traction lift system. The embodiments of Fig. 2 - 5, coating 26 include a thermoplastic material and at least one fire-retardant material. The thermoplastic material is not limited to any particular material; the thermoplastic material can, for example, be a thermoplastic elastomer, a vulcanized thermoplastic, a thermoplastic polyurethane or other thermoplastic material. The fire retardant material is not limited to any specific material. As used here, the phrase "fire retardant", from "fire resistant", means to inhibit or resist or delay the spread of fire. Flammable materials may include one or a combination of the following options: phosphorous-based materials; halogenated derivative materials (for example, bromines, hypochlorites, fluorines, etc.); intumescent systems (which normally include an acid source, a carbonization or char forming agent and a blowing agent); silicon-based materials; nitrogen-based materials (for example, melamine compounds); polymers with a nanoscale filler chemically bonded to a matrix phase; nano-composite materials (for example, nano-clay, carbon nanotubes, metal oxides, etc.); the materials described in International Orders Nos PCT / US2008 / 073236 and PCT / US2011 / 55940, which are incorporated by reference in this document; or other materials. Although coating 26 does not need to include any particular thermoplastic materials or particular flammable materials, it may be preferred that the selected materials, when combined, do not interfere with or negatively alter the other respective properties. For example, it may be important that the fire retardant material does not inhibit the flexibility or moldability of the thermoplastic material. The coating does not need to include a thermoplastic material. In alternative embodiments, the coating may include a plurality of fibers (e.g., yarns), and the fibers can be woven over the tension members. In such embodiments, the fibers may have fire retardant properties, or flammable materials may be applied to the fibers. Coatings, including woven fibers, are known in the art and will not be discussed further in this document. In alternative embodiments, the coating may include thermoset rubbers, such as thermoset vulcanized rubbers.
    [0032] Referring to the modalities illustrated in Fig. 2 - 5, the coating 26 includes a first side surface 28, a second side surface 30, a first traction surface 32 and a second traction surface 34. The first and the second side surface, 28, 30 are opposed to each other, and the first and second traction surface 32, 34 are opposed to each other. The first and second traction surfaces 32, 34 (i.e., the wide side surfaces of the belt 22) extend in a direction between the first and second lateral surfaces 28, 30 (i.e., the side surfaces of the tape). In the modalities of Fig. 2, 4 and 5, the first and second side surfaces 28, 30 and the first and second traction surfaces 32, 34 are substantially planar and define a rectangular sectional view geometry, having blunt edges . In alternative embodiments, however, one or more of the first and second side surfaces and the first and second traction surfaces may be non-flat. For example, Fig. 3 illustrates an embodiment of the tape 22 in which the first and second side surfaces 28, 30 of the liner 26 are curved. In other embodiments, one or more of the first and second side surfaces and the first and second traction surfaces may have a sawtooth shape, a "V" shape or another shape. Referring to Fig. 2, the first and second side surfaces 28, 30 are separated from each other by a width at a distance and the first and second traction surfaces 32, 34 are separated from each other by a distance in height. The embodiment illustrated in Fig. 2, the section view geometry of the liner 26 is the same throughout the tape 22; that is, any given section of the cladding 26 will have a geometry that is identical to that shown in the section view of Fig. 2. In alternative embodiments, there may be some change in the geometry of the cladding section view. In some embodiments, a width distance between the side surfaces of the coating is greater than a height distance between the tensile surfaces of the coating.
    [0033] In the embodiments illustrated in Fig. 2 - 5, the liner 26 further includes a first side region 36 contiguous with the first side surface 28, a second side region 38 contiguous with the second side surface 30 and a central region 40 extending in a direction between the first and second side regions 36, 38. The first and second side regions 36, 38 are more fire retardant than the central region 40. In some embodiments, the fire retardant properties enhanced in the first and second lateral region 36, 38 are achieved, providing additional and / or different flammable materials and / or higher concentrations (for example, greater weight by volume) of flammable materials, in the first and second lateral region 36, 38 in relation to the central region 40. In some modalities, for example, the first and the second lateral region 36, 38 have at least 5% greater weight per volume of flammable materials in relation to the central region 40. In other modalities, difference in the concentration of material fire between the first and the second lateral region, 36, 38 and the central region 40 can be greater or less than 5%. In other embodiments, the central region 40 may have non-fire retardant properties, and therefore the fire properties in the first and second side regions 36, 38 are enhanced over the central region 40 simply by providing fire retardant materials in the first and in the second side region 36, 38. In yet other embodiments, the fire retardant properties reinforced in the first and second side region 36, 38 are achieved by selecting a particular geometry from the section view for the first and second side region 36, 38. The specific geometry of the extremity for the first and the second lateral region 36, 38 can be selected to exploit the fact that fire spreads more slowly over wide flat surfaces than over, for example, surfaces or corners with the narrow edge. The configurations and compositions of the various regions of the coating 26 will be discussed below. It is observed that, in all the figures, the tension members 24 are shown only as fitted within the central region 40 of the coating 26. In alternative embodiments not shown in the figures, the first or second lateral region of the coating may enclose one or more more among the tension members.
    [0034] In the embodiment illustrated in Fig. 2, each of the first and second side regions 36, 38, from a sectional view, has a rectangular geometry. The first lateral region 36 is defined by the first lateral surface 28, the first and the second surface of the traction 32, 34 and a first limit of the lateral region 42 which extends in a direction between the first and the second surface of the traction 32, 34 In the embodiment illustrated in Fig. 2, the first boundary of the lateral region 42 is substantially planar and extends in a direction perpendicular to the first and second traction surfaces 32, 34. The second lateral region 38 is defined by the second lateral surface 30, the first and second traction surfaces 32, 34 and a second boundary of region 44 that extends in a direction between the first and second traction surfaces 32, 34. In the embodiment illustrated in Fig. 2, the second boundary region 44 is substantially planar and extends in a direction perpendicular to the first and second traction surfaces 32, 34. In the embodiment illustrated in Fig. 2, the first lateral region 36 is further defined by a width distance (ident shown in Fig. 2 as "y1") equal to the distance between the first lateral surface 28 and the first limit of the lateral region 42 and the second lateral region 38 is further defined by a width distance (identified in Fig. 2 as "y2 ") equal to a distance between the second lateral surface 30 and the second lateral region limit 44. In the embodiment illustrated in Fig. 2, because the first and second lateral region 36, 38 have rectangular geometries, each one between the first and the second side region 36, 38 is defined by only one distance in width. That is, in the embodiment illustrated in Fig. 2, all the width distances between the first side surface 28 and the first limit of the side region 42 will be the same, and all the width distances between the second side surface 30 and the second limit side 44 will be the same. In the alternative modalities (for example, the modalities illustrated in Fig. 4 and 5), the first and the second lateral region 36, 38 may not have rectangular geometries and thus each can be defined by another distance in width. In the embodiment illustrated in Fig. 2, the first and second lateral regions 36, 38 each have a height distance equal to the distance between the first and second traction surfaces 32, 34. The central region 40 is defined by a width distance (identified in Fig. 2 as "y3") equal to the distance between the first limit of the lateral region 42 and the second limit of the lateral region 44. In the embodiment illustrated in Fig. 2, the combined width distances of the first and second regions 36 , 38 and the width distance of the central region 40 are equal to the width distance of the liner 26.
    [0035] The first and second regions 36, 38 of the coating 26 are not limited to any particular section view geometry. In some alternative embodiments, the first and second lateral region 36, 38 have sectional view geometries that are not rectangular. For example, in the embodiment illustrated in Fig. 3, where the first and second side surfaces 28, 30 of the cladding 26 are arched, the first and second side regions 36, 38 of the cladding 26 each have a non-rectangular geometry. By rounding the first and second side surfaces 28, 30, the fire retardant properties of the first and second side regions 36, 38 can be improved in relation to the central region 40. In such embodiments, the first and second side regions 36, 38 can be made of the same material as the central region 40; that is, in such embodiments, it may be unnecessary to provide, for example, additional and / or different fire retardant materials and / or high concentrations of fire retardant materials, in the first and second side region 36, 38, in relation to the region central 40. In the embodiment illustrated in Fig. 4, the first and second side region 36, 38, when viewed from a section view, have a "C" -shaped geometry and "C-inverse" -shaped geometry, respectively As indicated above, in the embodiment shown in Fig. 4, the first and second side regions 36, 38 are each defined by more than one distance in width In the embodiment illustrated in Fig. 4, the first and second side regions 36, 38 are configured essentially in the same way as they are illustrated in Fig. 2, except the first limit of the lateral region 42 and the second limit of the lateral region 44 which are not substantially planar. The first limit of the lateral region 42 defines a recess 43 that if extends to the first lateral region, 36, and the second boundary of the lateral region 44 defines a recess 45 that extends to the second lateral region 38. When providing first and second lateral regions that include recesses as shown in Fig. 4, a quantity smaller fire-retardant material can be used compared to modalities similar to that shown in Fig. 2, while still achieving the same results as modalities similar to that shown in Fig. 2. This is because the volume first and second side regions may be smaller in comparison with modalities similar to that shown in Fig. 2.
    [0036] In the modalities illustrated in Fig. 2 - 4, the central region 40 is a continuous region of the coating 26. In alternative modalities, the central region is subdivided into several sub-regions. For example, in the modality illustrated in Fig. 5, the central region 40 is subdivided into a first 46 sub-region of traction, a second sub-region of traction 48 and a sub-region of core 50. The first sub-region of traction 46 is defined by the first traction surface 32, the first limit of the lateral region 42, the second limit of the lateral region 44 and the first limit of the sub-region of traction 52. The second sub-region of traction 48 is defined by the second traction surface 34, the first limit of the lateral region 42, the second limit of the lateral region 44 and the second limit of the sub-region of traction 54. In the modality illustrated in Fig. 5, each of the first and second limits of the sub-region traction region 52, 54 are substantially planar and extend perpendicular to the first and second limit of the lateral region, 42, 44. The first traction sub-region 46 is defined by a distance in height (identified in Fig. 5 as "z1 ") equals the distance between the first traction surface 32 and the first traction sub-region limit 52, and the second traction sub-region 48 is defined by a distance in height (identified in Fig. 5 as "z2") equal to the distance between the second traction surface 34 and the second traction sub-region limit 54. The first and second limits of the traction sub-region need not be substantially planar; in alternative modalities, the first and second limits of the sub-region of traction can be at least partially arched, or otherwise. The core sub-region 50 is defined by the first limit and the second limit of the lateral region 42, 44 and the first limit and the second limit of the traction sub-region 52, 54. The core sub-region 50 is defined by a distance in height (identified in Fig. 5 as "z3") equal to the distance between the first and second limits of sub-region of traction 52, 54. The first and second distance in height combined of the sub-regions of traction 46 , 48 and the distance in height of core subregion 50 is equal to the distance between the first and second traction surfaces 32, 34. In the embodiment illustrated in Fig. 5, each of the first and second sub-regions of traction 46 , 48 and the core subregion 50 may have a rectangular geometry when viewed from a section view. In alternative embodiments, each of the various sub-regions of the central region of the cladding may have non-rectangular geometries. In the embodiment illustrated in Fig. 5, the tension members 24 are shown to be fitted within the region of the sub-core 50 of the central region 40 of the liner 26. In alternative modalities not shown in the figures, one or more tension members may alternatively or additionally be wrapped within one or more of the first and second sub-regions of the traction of the central region of the coating.
    [0037] In modalities in which the central region of the coating is subdivided into several sub-regions, each of the various sub-regions may have different properties and / or a different composition in relation to the other. For example, in the modalities illustrated in Fig. 5, the first and second traction sub-regions, 46, 48 of the cladding 26 each have a composition that makes them suitable for attaching a traction sheave when using the traction lift system ; for example, each of the subregions 46, 48 may have a desired friction coefficient. In contrast, the subregion core 50 of coating 26 has a composition that facilitates fireproofing (although less fire retardant than the first and second side region 36, 38 of coating 26, as discussed above). In alternative embodiments, the properties and / or compositions of the various sub-regions of the coating may vary, and may be selected to make the coating appropriate for a particular use.
    [0038] The tape 22 shown in Fig. 2 can, for example, be manufactured by extruding the coating 26 into the plurality of tension members 24. In such manufacturing methods, a thermoplastic material and a fire retardant material can be provided for a coating material mixer. The coating material mixer can produce a first mixed coating material and a second mixed coating material. The first mixed coating material may include a higher concentration (e.g., greater weight by volume) of the fire retardant material than the second mixed coating material, and therefore the first mixed coating material is more fire retardant than the second mixed coating material. The first and second mixed coating materials can be fed from the coating material mixer to a coating forming device. A plurality of spools can supply tension members 24 to the coating forming device. As the tension members 24 are fed through the coating forming device, the first and second mixed coating materials can be molded on the outer surfaces of the tension members 24 resulting in the tape illustrated in Fig. 2. The coating forming device includes a molding device for providing the desired geometries of the coating 26; for example, the desired geometries of the first and second lateral region 36, 38 and the desired geometry of the central region 40. The coating forming device can be configured so that the first mixed coating material (i.e., the most retardant material fire) is used to form the first and second side region 36, 38 of the coating 26, and the second mixed coating material (i.e., the least fire retardant material) is used to form the central region 40 of the coating 26 Similar manufacturing steps can be used to manufacture the modalities illustrated in Fig. 3-5.
    [0039] The tape of the present invention need not be manufactured in accordance with the extrusion method described above; The manufacturing method described above is for illustrative purposes only. In another example of an acceptable method for making the tape of the present invention, fire retardant material can be incorporated together without being mixed directly into the coating material. In such methods, the fire retardant material can be incorporated into the coating by inserting the fire retardant material into voids in a preformed coating. Such methods are known in the art and are described, for example, in U.S. Patent No. 6,739,433, which is hereby incorporated by reference. Such methods will not be described further here. Alternatively, a mold wheel or other molding method can be used to manufacture the present invention.
    [0040] As indicated above, not all types of coating include a thermoplastic material. In some alternative embodiments, the coating includes a plurality of fibers that are woven over the plurality of tension members to form the tape. Methods for weaving fibers over a plurality of tension members are known in the art and will not be discussed in detail in this document. The methods described above can be used to adapt the known methods for weaving fibers over a plurality of tension members so that the first and second side regions of a fiber fabric coating are more fire retardant than a central region of the coating.
    [0041] Although various modalities of the present invention have been disclosed, it will be apparent to those skilled in the art that many additional modalities and implementations are possible within the scope of the invention. Accordingly, the present invention should not be restricted except considering the appended claims and their equivalents.
    权利要求:
    Claims (11)
    [0001]
    1. Tape (22), comprising: a plurality of members of longitudinal tension (24) extending; and a liner (26) substantially maintaining the plurality of tension members (24), the liner (26) having a first side region (36), a second side region (38) and a central region (40) between the first and the second side region (36, 38), the coating (26) further comprising a first side surface (28) opposite a second side surface (30), the first and second side surface (28, 30) extending between a first traction surface (32) and a second traction surface (34); wherein a width distance between the first and second side surfaces (28, 30) is greater than a height distance between the first and second traction surfaces (32, 34); wherein the first lateral region (36) is contiguous with the first lateral surface (28), and the second lateral region is contiguous with the second lateral surface (30); and, wherein the first and second side region (36, 38) of the coating (26) are more fire retardant than the central region (40) of the coating (26); characterized by the fact that: the first and second lateral region (36, 38) of the coating (26) include a greater concentration of fire retardant material than the central region (40) of the coating (26), where the central region (40) is continuous in terms of the fire retardant material of the central region (40) between the first tensile surface (32) and the second tensile region (34).
    [0002]
    2. Tape (22) according to claim 1, characterized by the fact that the first lateral region (36) is defined by the first lateral surface (28), the first and the second traction surface (32, 34), and a first limit (42) of the lateral region extending between the first and the second surface of the traction (32, 34).
    [0003]
    Tape (22) according to claim 2, characterized by the fact that the first lateral region (36) is defined by a width distance between the first lateral surface (28) and the first limit (42) of the lateral region, or by a plurality of width distances between the first lateral surface (28) and the first boundary (42) of the lateral region.
    [0004]
    Tape (22) according to any one of claims 1 to 3, characterized in that the second lateral region (38) is defined by the second lateral surface (30), the first and the second traction surface (32, 34), and a second limit of the lateral region that extends between the first and the second surface of the traction (32, 34).
    [0005]
    Tape (22) according to claim 4, characterized in that the second side region (38) is defined by a width distance between the second side surface (30) and the second side region limit.
    [0006]
    Tape (22) according to claim 4, characterized in that the second side region (38) is defined by a plurality of width distances between the second side surface (30) and the second limit of the side region.
    [0007]
    Tape (22) according to any one of claims 1 to 6, characterized in that each of the first and second side regions (36, 38) of the coating (26) includes a first fire retardant material and the central region (40) of the liner (26) includes a second fire retardant material, and wherein the first fire retardant material is more resistant to fire than the second fire retardant material.
    [0008]
    Tape (22) according to any one of claims 1 to 7, characterized in that the coating (26) includes one or more woven fibers.
    [0009]
    Tape (22) according to claim 8, characterized in that one or more woven fibers of the coating (26) have fire retardant properties, or the fire retardant material is applied to one or more woven fibers of the coating (26).
    [0010]
    Tape (22) according to any one of claims 1 to 9, characterized in that the coating (26) defines at least one blunt edge, or in which the coating (26) is at least partially molded arc-shaped.
    [0011]
    11. A method for making a tape (22), comprising: providing a plurality of members of longitudinal tension (24) extending; and, covering the plurality of tension members (24) with a liner (26), the liner (26) having a first side region (36), a second side region (38) and a central region (40) extending between the first and second side region (36, 38), the liner (26) further comprising a first side surface (28) opposite a second side surface (30), the first and second side surface (28, 30) extending between a first traction surface (32) and a second traction surface (34); wherein a width distance between the first and second side surfaces (28, 30) is greater than a height distance between the first and second traction surfaces (32, 34); wherein the first lateral region (36) is contiguous with the first lateral surface (28), and the second lateral region is contiguous with the second lateral surface (30); and, wherein the first and second side region (36, 38) of the coating (26) are more fire retardant than the central region (40) of the coating (26); characterized by the fact that: the first and second lateral region (36, 38) of the coating (26) include a greater concentration of fire retardant material than the central region (40) of the coating (26), in which the central region (40) is continuous in terms of the fire retardant material of the central region (40) between the first tensile surface (32) and the second tensile region (34).
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    EP2875182B1|2020-07-01|
    WO2014014456A1|2014-01-23|
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    法律状态:
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-10-27| B09A| Decision: intention to grant|
    2020-12-22| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 18/07/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/US2012/047204|WO2014014456A1|2012-07-18|2012-07-18|Fire-retardant belt|
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