• 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:
    Pneumatic reduced weight pneumatic tire A pneumatic tire having a carcass and a belt reinforcing structure (40) is disclosed. The belt reinforcing structure (40) comprises a belt (70, 92) obtained by winding a rubber band (41) comprising reinforcing cords (44, 46). The strip is made from or comprises at least one first reinforcing cord (44) and at least one second reinforcing cord (46). The first reinforcing cord (44) is made of a material whose modulus is greater than that of the second reinforcing cord (46) or the first reinforcing cord (44) has a modulus greater than that of the second reinforcing cord .
    公开号:FR3040328A1
    申请号:FR1601248
    申请日:2016-08-22
    公开日:2017-03-03
    发明作者:Joanne Elizabeth Shaw；Frank Anthony Kmiecik；Leonard James Reiter
    申请人:Goodyear Tire and Rubber Co；
    IPC主号:
    专利说明:

    Field of the invention
    The present invention relates to pneumatic tires having a carcass and a belt reinforcing structure, and preferably pneumatic tires subjected to a heavy load and rotating at high speed such as those used on an airplane.
    Foundation of the invention
    Pneumatic tires which are intended for high speed applications experience a significant degree of sagging in the crown area of the tire as the tire enters and leaves the area corresponding to the impression. This problem manifests itself in particular on air tires for airplanes in which the tires can reach speeds of more than 320 km / h during takeoff and during landing.
    When a pneumatic tire rotates at a very high speed, the size of the crown zone tends to increase because of the high speed and angular accelerations which tend to pull the tread area radially towards the tread. 'outside. The load of the vehicle counteracts the forces in question, said load being only supported in the small area of the tire which is designated by the expression "area corresponding to the footprint".
    The current determinants of a pneumatic tire for an airplane are those of an aircraft tire capable of high speed, high load, and low weight. It is well known in the prior art to use zigzag belt layers in pneumatic tires for airplanes, as disclosed in US-A-5,427,167. Zigzag belt layers provide the advantage removing cut belt edges at the outer side edge of the belt pack. The inherent flexibility of the zigzag belt layers also enhances cornering forces. However, a tire designed with zigzag belt layers may have too many layers at the edges of the belts, which could reduce its durability. In addition, a compromise is generally sought between payload and weight. Thus, one needs an improved pneumatic tire which is suitable for use on an airplane, which is able to meet the requirements of high speed and high load, and this with a weight reduced and improved durability.
    SUMMARY OF THE INVENTION The invention relates to a tire having a carcass and a belt reinforcing structure. The belt reinforcing structure comprises a belt obtained by winding a rubber band comprising reinforcing cords. The strip is formed from or comprises at least one first reinforcing cord and at least one second reinforcing cord. The first reinforcing cord is made of a material whose modulus is greater than that of the second reinforcing cord or the first reinforcing cord has a module greater than that of the second reinforcing cord.
    In a preferred aspect of the invention, the first reinforcing cord has a modulus of elasticity tangential to an elongation at break of 80%, which is greater than 5,000 MPa, and / or the second reinforcing cord has a modulus of elasticity. tangential elasticity at an elongation at break of 80%, which is less than 5,000 MPa.
    In a preferred aspect of the invention, the first reinforcing cord has a modulus of elasticity tangential to an elongation at break of 80%, which is less than 35,000 MPa.
    In a preferred aspect of the invention, at least two second reinforcing cords are provided in the strip, and each second reinforcing cordset is disposed at each lateral end of the strip.
    In a preferred aspect of the invention, said at least one first reinforcing cord is disposed between the second reinforcing cords.
    In a preferred aspect of the invention, said at least one first reinforcing cord is constituted by aramid and nylon filaments or is constituted by aramid filaments or the first reinforcing cord is constituted by a cord fused with aramid and the nylon and / or said at least one second reinforcing cord is made of nylon filaments.
    In a preferred aspect of the invention, the web has at least nine reinforcing cords and / or the web has a width of 12.7 mm or a width which is in the range of 8 to 15 mm.
    In a preferred aspect of the invention, the web has an "epi" value (number of ends per 2.54 cm) of 16 or 18 or an "epi" value in the range of 14 to 20.
    In a preferred aspect of the invention, the belt is a zigzag belt or a helically wound belt.
    In a preferred aspect of the invention, the web has a total of 9 reinforcing cords in such a way that seven first reinforcing cords are provided between the two second reinforcing cords.
    Preferably, the tire is an air tire for an airplane.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the first reinforcing cord has a modulus of elasticity tangent to an elongation at break of 80%, which is greater than 5,000 MPa.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the second reinforcing cord has a modulus of elasticity tangent to an elongation at break of 80%, which is less than 5,000 MPa.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the first reinforcing cord has a modulus of elasticity tangential to an elongation at break of 80%, which is less than 35,000 MPa.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein at least two second wires are provided in one strip and each second cord is disposed at each lateral end of the strip.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the first cord is disposed between the second cord.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the first cord consists of a fused aramid yarn of nylon.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the first cord is made of aramid.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, Ια strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose module is greater than that of the second reinforcing cord, forms of wherein the second cord is made of nylon.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of embodiment in which the strip has at least 9 cords.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the strip has a width of 12.7 mm.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of embodiment in which the band has a value "epi" (number of ends per 2.54 cm) equal to 16.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of embodiment in which the band has a value "epi" (number of ends per 2.54 cm) equal to 18.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of realization in which the belt is a zigzag belt.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising reinforcing cords. , the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, embodiments in wherein the belt is a helically wound belt.
    In one or more embodiments of the present invention, there is provided a tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising a belt obtained by winding a rubber band comprising cords. reinforcement, the strip being made from or comprising a first reinforcing cord and a second reinforcing cord, the first reinforcing cord being made of a material whose modulus is greater than that of the second reinforcing cord, forms of wherein the web has a total of nine reinforcing cords in such a way that seven first reinforcing cords are provided between the two second reinforcing cords. Definitions
    The term "carcass" refers to the structure of the tire outside the belt structure, the tread, the under-yoke, and the rubber of the sidewalls over the plies, but including the heels.
    The term "circumferential" refers to lines or directions that extend along the perimeter of the surface of the annular tread perpendicular to the axial direction.
    The term "cabled" refers to one of the reinforcing yarns that comprise webs in the tire.
    The term "equatorial plane (EP)" refers to the plane perpendicular to the axis of rotation of the tire and passing through the center of its tread.
    The term "small angle belt" refers to a belt comprising parallel cords forming an angle of 10 ° or less, preferably 5 ° or less, such as 1 ° or 2 ° with respect to the equatorial plane of the tire.
    The term "modulus of elasticity" of a cord at a given stress or strain refers to the magnitude of the secant modulus calculated at the given strain or stress. A high modulus of elasticity refers to a secant elastic modulus greater than 1,000 cN / tex and a low modulus of elasticity refers to a secant modulus of less than 600 cN / tex.
    The term "web" refers to a continuous layer of parallel cords coated with rubber.
    The terms "radial" and "radial" refer to radially extending directions to or away from the axis of rotation of the tire.
    The term "radial web type tire" refers to a belted or circumferentially restricted tire in which web cords extending from one bead to the other are laid forming cord angles between 65 °. and 90 ° to the equatorial plane of the tire.
    The term "section size" or "section width" means the distance between the sidewalls of a tire, measured in the widest part of the tire when the tire is inflated to its nominal pressure and is not subject to to a charge.
    The term "modulus of tangent elasticity" of a cord at a given strain or stress refers to the magnitude of the modulus of tangent elasticity of the cord. At a given stress or strain, the modulus of elasticity tangent represents the value of the slope of the tangent relative to the strain / strain curve, and can be determined using ASTM standard El 11-04 titled "Standard Test Method for Young 's Modulus, Tangent Modulus and Chord Modulus".
    The term "zigzag waist reinforcement structure" means at least two layers of cord or a strip of parallel cords having from 1 to 20 cords in each ribbon and laid forming an alternating pattern extending at an angle of preference between 5 ° and 30 ° between the side edges of the belt layers.
    Brief description of the drawings
    Figure 1 is a schematic cross-sectional view of a first embodiment of a half of a tire according to the invention.
    Figure 2 is a schematic perspective view of a zigzag belt layer in the middle of the formation.
    Figure 3 is an enlarged cross-sectional schematic view of a first embodiment of one-half of a package of composite belts for a tire, showing the configuration of the belt layer.
    Figure 4 is an enlarged schematic cross-sectional view of a second embodiment of a half of a package of composite belts, showing the configuration of the belt layer.
    Figure 5 is a first embodiment of a belt reinforcing strip; and
    Figure 6 is a second embodiment of a belt reinforcing strip.
    Detailed description of embodiments of the invention given by way of example
    FIG. 1 illustrates a cross-sectional view of one half of an aircraft radial type tire of the present invention. The tire is symmetrical around the medial circumferential plane, so that only one half is shown. As shown, the air tire comprises a pair of portions 12 serving as heels each containing a bead core 14 incorporated therein. An example of a bead core which is suitable for use in an aircraft tire is shown in US-B 6,571,847. The bead core 14 preferably has aluminum, an aluminum alloy or another light weight alloy in the central portion 13 surrounded by a plurality of steel cladding wires 15. Those skilled in the art will appreciate that other heel rods can also be used.
    The airfoil tire further comprises a flank portion 16 which extends substantially outwardly from each of the bead-like portions 12 in the radial direction of the tire, and a portion 20 serving as tread which extends between the outer ends in the radial direction of the portions 16 forming flanks. The tire is shown in the mounted state on a rim flange having a rim flange width that extends from one bead to the other and is indicated by the reference Wbf in FIG. 1. Flange size of the tire is indicated in Figure 1 by the letter W and it is the width of the tire in cross section in its widest part when the tire is inflated to its normal pressure and is not subjected to a charge.
    In addition, the tire 10 is reinforced with a carcass 22 which extends in a toroidal configuration from one of the portions 12 serving as a heel to the other portion 12 serving as a heel. The carcass 22 comprises internal carcass plies 24 and outer carcass plies 26, preferably oriented radially. Of these carcass plies, specifically, four inner plies 24 are wrapped around the bead core 14 from the inside of the tire to the outer side of the latter to form rollover portions, while specifically two outer plies 26 extend downward towards the bead core 14 along the outer side of the overturning portion of the inner carcass ply 24.
    The aircraft tire may preferably be a type H tire having a Wbf / W ratio in the range of 0.65 to 0.7 and more preferably in the range of 0, 65 to 0.68.
    Each of these carcass plies 24, 26 may comprise any suitable cord, specifically nylon cords such as nylon-6,6 cords which extend substantially perpendicular to the equatorial plane EP of the tire (c). that is, extending in the radial direction of the tire). Preferably, the nylon cords have a construction of the type of 1890 denier / 2/2 or 1890 denier / 3 type. One or more of the carcass plies 26 may also comprise an aramid and nylon cord structure, for example a hybrid cord, a high energy cord, or a fused cord. Examples of suitable cords are described in US-A-4,893,665, US-A-4,155,394 or US-A-6,799,618. The cords of webs preferably have an elongation at break greater than 8% and less than 30% and more preferably greater than 9% and less than 28%.
    The aircraft tire 10 further includes a bundle of belts 40 arranged between the carcass 22 and the tread rubber 28. FIG. 3 illustrates a first embodiment of one-half of a package of belts 40 suitable for use in the airplane tire. The bundle of belts 40 is symmetrical around the medial circumferential plane, so that only half of the bundle of belts is illustrated. The bundle of belts 40 as depicted comprises a first waist layer 50 which is disposed adjacent to the carcass. The first waist layer 50 is preferably constituted by reinforcing cords which form an angle of 10 ° or less with respect to the medial circumferential plane, and more preferably an angle of 5 ° or less. Preferably, the first waist layer 50 is comprised of a first rubber band 41 consisting of two or more cords that are wound by spiraling or helically wrapping relative to the circumferential direction. The first belt layer 50 preferably represents the narrowest belt structure of the belt package 40 and has a width which is in the range of 13% to 100% of the rim width (width between the rims).
    The belt package 40 further preferably comprises a second belt layer 55 which is radially disposed outside of the first waist layer 50. Preferably, the second waist layer 55 is formed by cords which form an angle of 10 ° or less from the medial circumferential plane. Preferably, the second waist layer 55 is made of a rubber band 41 consisting of two or more cords obtained by winding the cords spirally or helically with respect to the circumferential direction. The second belt layer has a width in the range of 13% to 100% of the rim width. Preferably, the second waist layer 55 has a width equal to or slightly greater than that of the first waist layer 50. The waist pack 40 may further comprise a third waist layer 60 and a fourth waist layer 61. third waist layer 60 is radially disposed outside the second waist layer 55 and may be substantially wider than the second waist layer. The fourth waist layer is radially disposed outside the third waist layer 60 and may be the same width as or slightly wider than the third waist layer 60. Preferably, the third and fourth waist layers 60, 61 are small angle belts, specifically forming a waist angle of 10 ° or less with respect to the medial circumferential plane. Preferably, the third and fourth belt layers 60, 61 consist of a first rubber band 41 consisting of two or more cords obtained by winding cords spirally or helically with respect to the circumferential direction. .
    The belt package 40 further comprises at least one zigzag waist reinforcement structure 70, 92. The zigzag waist reinforcement structures 70, 92 comprise two layers of cords intertwined with one another to provide the structure such that it is shown in FIG. 2. Each zig-zag belt structure 70, 92 consists of a rubber composite strip 43 consisting of two or more cords. The composite strip 43 is shown in FIG. 5 and will be described in more detail below. The composite strip 43 is generally wound in the circumferential direction to extend between alternate side edges 42 and 45 of a tire building drum 49 or a central portion. The strip is wound in a zigzag pattern repeatedly, while the strip 43 is shifted by a desired value in the circumferential direction so as to eliminate any free space between the adjacent strips 43. As a result, the cords are extend in the circumferential direction, while changing direction of inclination to a point of return at both ends or at both edges 42, 45. The cords of the zigzag feel structure intersect each other, specifically forming a cable angle A of 5 ° to 30 ° with respect to the equatorial plane EP of the tire when the strip 43 is returned at least once between the two lateral ends 42 and 45 of the ply each time within 360 ° of the circumference as mentioned above. The two layers of cords used to form each zigzag waist structure are embedded and inseparable in the waist layer and any cut ends are eliminated at the outer lateral ends of the waistband.
    In the embodiment of FIG. 3, it is preferable to form a reinforcement cord strip having an epi value equal to 18 from one or more small angle belts 50, 55, 60, 61. It is preferable to form the reinforcing cordstrip from reinforcing cords which consist of amide, nylon, or a blend of fused aramid and nylon. It is also preferred to make the web 12.7 mm wide, including 9 reinforcing cords. The zigzag waistbands preferably consist of a 12.7 mm composite web comprising 8 reinforcing cords having an epi value of 16.
    In order to reduce the number of overlapping bands at the edges of the belt, it is preferable to vary the amplitude or width of the zigzag belt winding. In general, a zigzag belt is formed in such a way that it has a constant width or amplitude. In order to reduce the number of layers at the edges of the belt, the amplitude (i.e. the distance between the center of the drum and the axial end of the drum) of the zigzag configuration can be varied. . The amplitude can be varied randomly or it can be varied according to a pattern. In one example, a first zigzag winding on the drum has a first W1W2 winding pattern, W1 representing a first amplitude and W2 representing a second amplitude directly following the first amplitude, W1 not being equal to W2. The first winding is covered with a second winding which has a second W2W1 winding pattern. Each winding pattern is repeated as often as necessary to bring the winding on the drum to completion.
    Band Configuration
    The composite strip 43 is shown in FIG. 5 and can be used to form any of the above-described belt structures and is preferably used to form at least one of the belt structures. zigzag. More preferably, the composite web is used to form all of the zigzag belt structures. The composite strip consists of two or more parallel reinforcing cords, the reinforcing cords being different from each other. The reinforcing cords are coated with rubber. More preferably, the composite strip 43 is constituted by reinforcing cords which are made from different materials. The width of the web may be varied, if desired, but preferably has a width of about 12.7 mm with a variation of ± 5%. The thickness of the web may vary depending on the application. If the reinforced band is used for spirally wound helical belts or for small angle belts, the band thickness may be 1.58 mm. If the reinforced band is used for zigzag belts, the thickness of the band is higher than that used for the small angle / spiral belts. The thickness of the belt for zigzag belts is preferably 1.65 mm.
    In a first embodiment as shown in FIG. 5, the first reinforcement in the form of a cord 44 has a tangential modulus of elasticity greater than that of the second reinforcement in the form of a cord 46. Preferably, the composite strip possesses at least two reinforcing cords 44 having an upper tangent modulus of elasticity which are arranged laterally inwards (i.e. towards the center of the web) on the web and at least two cords of reinforcement having a lower tangent modulus of elasticity. Preferably, the reinforcing cords 46 having a lower tangent modulus of elasticity are disposed on the outer lateral ends of the composite web. Reinforcing cords 44 having a higher tangent modulus of elasticity have a modulus of elasticity tangential to an elongation at break of 80%, which is greater than 4,500 MPa, and more preferably greater than 10,000 MPa and less than 31,000. MPa. The cords 46 having a lower tangent modulus of elasticity have a modulus of elasticity tangent to an elongation at break of 80%, which is less than 4,500 MPa.
    In the example shown in FIG. 5, a total of 8 reinforcing cords are provided which are arranged parallel to one another. The composite strip 43 has a width of 12.7 mm. The composite strip 43 has an epi value equal to 16. The composite strip 43 has nylon reinforcing cords 46 which are disposed on each side edge of the strip. It is also possible to provide four external reinforcing cords 46, two reinforcing cords 46 being disposed at each lateral edge. Reinforcing cords 46 having a lower modulus may be any desired material such as nylon or nylon 6,6. It is preferable to ensure that the cords 46 having a lower module represent nylon cords having a structure of the type of 2,100 denier / 2/2. The composite strip 43, as shown in FIG. 5, has six reinforcing cords 44 having an upper module, which are arranged laterally inside the reinforcing cords 46 having a lower module. The internal reinforcing cords 44 may be made of any material having an upper modulus such as aramid, polyketone, or a hybrid or fused tow consisting of aramid and nylon. An example of a suitable cable structure may comprise an aramid and nylon composite containing two cords made of polyamide (aramid) comprising a type structure 3300 dtex with a twist of 6.7, and a nylon or plastic cord. nylon 6/6 having a structure of 1.860 dtex with a twist of 4.5. The overall twist of the fused cord is preferably 6.7. A second example of a suitable cable structure having a high modulus contains three polyamide cords having a 1.670 denier / 1/3 type structure.
    Fig. 6 illustrates a second embodiment of a band that is suitable for the invention. The composite tape has a 12.7 mm bandwidth and nine reinforcement cords. The composite strip has an epi value equal to 18. The outer lateral reinforcement cords 46, which are arranged at each lateral end of the strip, consist of a material having a lower modulus, the modulus of elasticity tangent to an elongation at break of 80% being less than 4,500 MPa. Preferably, the external reinforcing cords 46 are made of nylon. The composite web further includes cords 44 having an upper module, which are preferably disposed between the reinforcing cords 46 having a lower module.
    In FIG. 4, a second embodiment of the present invention is illustrated. The second embodiment includes a first and a second zigzag belt structure 80, 90. The second zigzag structure 90 is radially disposed outside the first zigzag belt structure 80. The second zigzag structure 80 is 90 zigzag belt has a width that is smaller than that of the first zigzag belt structure 80.
    It is furthermore preferable to ensure that the ply cords have an elongation at break which is greater than the elongation at break of the cords of belts. The properties of the cords such as percent elongation at break, linear density, and tensile strength are determined from cable samples that are taken after immersion, but before vulcanization of the tire.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    A pneumatic tire having a carcass and a belt reinforcing structure (40), the belt reinforcing structure (40) comprising a belt (70, 92) obtained by winding a rubber band (41) comprising reinforcing cords (44, 46), the web being formed from or comprising at least a first reinforcing cords (44) and at least one second reinforcing cords (46), wherein the first reinforcing cords (44) is made of a material whose modulus is greater than that of the second reinforcing cord (46) or the first reinforcing cord (44) has a module greater than that of the second reinforcing cord (46).
    [2" id="c-fr-0002]
    A pneumatic tire according to claim 1, wherein the first reinforcing cord (44) has a modulus of elasticity tangential to an elongation at break of 80%, which is greater than 5,000 MPa and / or wherein the second cord reinforcement (46) has a modulus of elasticity tangential to an elongation at break of 80%, which is less than 5,000 MPa.
    [3" id="c-fr-0003]
    The pneumatic tire of claim 1 or 2, wherein the first reinforcing cord (44) has a modulus of elasticity tangential to an elongation at break of 80%, which is less than 35,000 MPa.
    [4" id="c-fr-0004]
    The pneumatic tire of claim 1, wherein at least two second reinforcing cords (46) are provided in the web (41), and wherein each second reinforcing cords (46) is disposed at each lateral end of the web (41).
    [5" id="c-fr-0005]
    The pneumatic tire of claim 1 or 4, wherein said at least one first reinforcing cord (44) is disposed between the second reinforcing cords (46).
    [6" id="c-fr-0006]
    A pneumatic tire according to claim 1, wherein said at least one first reinforcing cord (44) is made of aramid and nylon filaments or is aramid filaments or wherein the first cord reinforcing member (44) is constituted by a fused yarn of aramid and nylon and / or said wherein at least a second reinforcing cord (46) is made of nylon filaments.
    [7" id="c-fr-0007]
    A pneumatic tire according to claim 1, wherein the band (41) has at least nine reinforcing cords (44, 46) and / or wherein the band (41) has a width of 12.7 mm or a width which is in the range of 8 to 15 mm.
    [8" id="c-fr-0008]
    The pneumatic tire of claim 1, wherein the band (41) has an epi value (number of tips per 2.54 cm) equal to 16 or 18 or an epi value which is in the range of 14 to 20.
    [9" id="c-fr-0009]
    The pneumatic tire of claim 1, wherein the belt (70,92) is a zigzag belt or a helically wound belt.
    [10" id="c-fr-0010]
    A pneumatic tire according to claim 7, wherein the web (41) has a total of nine reinforcing cords (44,46) in such a way that seven first reinforcing cords (44) are provided which are arranged between the two second reinforcing cords (46).
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    同族专利:
    公开号 | 公开日
    CN106476537A|2017-03-08|
    GB201614142D0|2016-10-05|
    GB2542915B|2019-04-03|
    US20170057291A1|2017-03-02|
    JP6964398B2|2021-11-10|
    JP2017047890A|2017-03-09|
    FR3040328B1|2019-04-19|
    GB2542915A|2017-04-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    US20120085475A1|2010-10-07|2012-04-12|Annette Lechtenboehmer|Pneumatic tire with a knitted flipper|
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    WO2014102672A1|2012-12-25|2014-07-03|Kordsa Global Endustriyel Iplik Ve Kord Bezi Sanayi Ve Ticaret Anonim Sirketi|A tire reinforcement material|
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    US20160023517A1|2014-07-22|2016-01-28|The Goodyear Tire & Rubber Company|Reduced weight aircraft tire|US10723177B2|2015-08-31|2020-07-28|The Goodyear Tire & Rubber Company|Reduced weight aircraft tire|
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    US20210323354A1|2020-04-17|2021-10-21|The Goodyear Tire & Rubber Company|Tire with cut protector belt structure|
    法律状态:
    2017-07-20| PLFP| Fee payment|Year of fee payment: 2 |
    2018-01-12| PLSC| Publication of the preliminary search report|Effective date: 20180112 |
    2018-07-12| PLFP| Fee payment|Year of fee payment: 3 |
    2020-07-15| PLFP| Fee payment|Year of fee payment: 5 |
    2021-07-14| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    US201562212077P| true| 2015-08-31|2015-08-31|
    US62/212077|2015-08-31|
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