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    STEEL CORD WITH IMPROVED FATIGUE STRENGTH
    184.
    发明授权
    STEEL CORD WITH IMPROVED FATIGUE STRENGTH 失效
    STAHLKABEL MIT VERBESSERTEMERMÜDUNGSWERT。

    公开(公告)号：EP0466720B1

    公开(公告)日：1993-11-24

    申请号：EP90904817.5

    申请日：1990-03-22

    Applicant: N.V. BEKAERT S.A.

    Inventor： BAILLIEVIER, Freddy ,  BERNARD, Huysentruyt

    IPC: D07B1/06

    CPC classification number: D07B1/062 ,  D07B3/106 ,  D07B2201/2006 ,  D07B2201/2023 ,  D07B2201/2051 ,  D07B2201/206 ,  D07B2207/208 ,  D07B2801/12

    Abstract: A steel cord (1) for the reinforcement of elastomers, especially for the reinforcement of breaker layers in a tire, said steel cord comprising two strands of at least two filaments (11, 12) each, said strands being twisted around each other and forming helicoids of a same pitch, the filaments (11) of the first strand having a pitch differing from the pitch of said helicoids and having a value of more than 300 mm, the filaments (12) of the second strand having the same pitch as said helicoids and being twisted in the same sense as said helicoids, all the filaments of both of said strands having a diameter between 0.08 and 0.45 mm, wherein the diameter of the filaments of one of said strands is at least 0.02 mm greater than the diameter of the filaments of the other of said strands. Preferably the diameter of the filaments (12) of said second strand is at least 0.02 mm greater than the diameter of the filaments (11) of said first strand.

    Abstract translation: 一种用于增强弹性体的钢丝绳（1），特别是用于加强轮胎中的破碎层，所述钢帘线包括两束至少两根细丝（11,12），所述股线彼此扭转并形成 具有相同间距的螺旋体，第一股线的细丝（11）具有与所述螺旋体的间距不同的间距并且具有大于300mm的值，第二股线的细丝（12）具有与所述螺旋体相同的间距 螺旋体并且以与所述螺旋体相同的意义扭曲，所述两股线的所有长丝的直径在0.08至0.45mm之间，其中所述线之一的长丝的直径比其直径大至少0.02mm 所述丝束中的另一条的长丝。 优选地，所述第二股线的细丝（12）的直径比所述第一股线细丝（11）的直径大至少0.02mm。

    STEEL CORD WITH REDUCED RESIDUAL TORSIONS
    186.
    发明公开
    STEEL CORD WITH REDUCED RESIDUAL TORSIONS 审中-公开
    STAHLSEIL MIT VERRINGERTEN RESTVERWINDUNGEN

    公开(公告)号：EP3140452A1

    公开(公告)日：2017-03-15

    申请号：EP15715713.2

    申请日：2015-04-07

    Applicant: NV Bekaert SA

    Inventor： GALLET, Jan ,  MULLEBROUCK, Rik ,  DOORNAERT, Ghislain

    IPC: D07B1/06 ,  D07B5/12 ,  D07B7/02

    CPC classification number: D07B1/062 ,  D07B1/0626 ,  D07B5/12 ,  D07B7/022 ,  D07B2201/2006 ,  D07B2201/2011 ,  D07B2201/2023 ,  D07B2201/2029 ,  D07B2201/2039 ,  D07B2201/2051 ,  D07B2201/206 ,  D07B2205/3035 ,  D07B2205/3053 ,  D07B2205/3089 ,  D07B2207/208 ,  D07B2207/4072 ,  D07B2401/2015 ,  D07B2501/2046 ,  D07B2801/12 ,  D07B2801/18 ,  D07B2801/10

    Abstract: A steel cord for reinforcing a breaker or belt ply in a rubber tire having a core group and a sheath group. The core group consists of two to four core steel filaments with a first diameter dc and the sheath group consists of one to six sheath steel filaments with a second diameter ds. The ratio dc/ds of the first diameter dc to the second diameter ds ranges from 1.10 to 1.70. The two core steel filaments are untwisted or have a twisting step greater than 300 mm. The sheath group is twisted around the core group with a cord twisting step in a cord twisting direction. The ratio of the difference in residual torsions of the core group and the sheath group to the difference in saturation level between the core group and the sheath group ranges from 0.10 to 0.65, preferably from 0.10 to 0.60.

    Abstract translation: 一种用于在具有芯组和护套组的橡胶轮胎中增强断路器或带束层的钢丝帘线。 核心组由两个至四个具有第一直径dc的芯钢丝组成，并且鞘组由具有第二直径ds的一至六个护套钢丝组成。 第一直径dc与第二直径ds的比率dc / ds在1.10至1.70之间。 两芯钢丝未扭绞或扭转步长大于300毫米。 护套组通过帘线扭转方向的绳扭转步骤围绕芯组绞合。 核心组和鞘组的残留扭转差与芯组与鞘组之间的饱和度差的比值为0.10〜0.65，优选为0.10〜0.60。

    PNEUMATIC TIRE
    187.
    发明公开
    PNEUMATIC TIRE 有权

    公开(公告)号：EP2639082A4

    公开(公告)日：2016-08-24

    申请号：EP11840239

    申请日：2011-11-08

    Applicant: BRIDGESTONE CORP

    Inventor： KITAHARA KOUTA

    IPC: B60C9/20 ,  B60C9/00 ,  D07B1/06

    CPC classification number: B60C9/0007 ,  B60C9/2006 ,  B60C9/28 ,  D07B1/062 ,  D07B1/0626 ,  D07B2201/2006 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2029 ,  D07B2201/2051 ,  D07B2201/206 ,  D07B2801/12

    Abstract: To provide a pneumatic tire wherein the lightweight properties of a tire is secured while improving the plunger energy and BES resistance thereof, which is particularly suitable for tires for a large passenger car or extra load tires. A pneumatic tire comprising a carcass 1 as a skeleton, and at least two belt layers 2a, 2b each formed by rubberizing a plurality of steel cords arranged obliquely with respect to the tire circumferential direction on the outside in the tire radial direction of the crown portion of the carcass is provided. The steel cord is composed of two or more core wires and five to seven sheath wires twisted together around the core wires; the interval between adjacent steel cords in the belt layer is more than 1.0 mm and not more than 1.50 mm; and the gauge of the belt layer is not less than 1.20 mm and not more than 1.60 mm.

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