Steel cord, composite of rubber and steel cord, and tire
    86.
    发明授权
    Steel cord, composite of rubber and steel cord, and tire 失效
    钢丝绳,橡胶和钢丝绳复合材料,轮胎

    公开(公告)号:US08117818B2

    公开(公告)日:2012-02-21

    申请号:US12440935

    申请日:2007-08-23

    Inventor: Kiyoshi Ikehara

    Abstract: A steel cord has a multi-twist structure in which N (N=2 to 8) strands 2 are twisted, each strand 2 being formed by twisting a plurality of element wires 1 and having a substantially elliptical cross-section, wherein d1/d2>1.08 is satisfied, where the major diameter of the strand 2 is represented by d1 and the minor diameter is represented by d2, and εe defined by the following equation: εc=√(−b/2+√(b2/4−c))−1 (in the equation, b represents −1+π2(−4R2+d2)/P2, c represents π2d2k(4π2R2+P2)/P4, R represents (D−d)/2, k represents tan2(π/2−π/N), and d represents (d1+d2)/2) satisfies εc>0.005, where the diameter of a circle circumscribing the cord is represented by D (mm) and the twist pitch of the cord is represented by P (mm).

    Abstract translation: 钢丝帘线具有N(N = 2〜8)股2绞合的多捻结构,每股2是通过扭转多个元件丝1而形成的,具有大致椭圆形的横截面,其中d1 / d2 > 1.08,其中股2的大直径由d1表示,小直径由d2表示,并且由以下等式定义:&egr; c =(-b / 2 +√(b2 / 4-c))-1(式中,b表示-1 +&pgr; 2(-4R2 + d2)/ P2,c表示&pgr; 2d2k(4&pgr; 2R2 + P2)/ P4, d)/ 2,k表示tan2(&pgr; / 2-&pgr; / N),d表示(d1 + d2)/ 2)满足&egr; c> 0.005,其中限定帘线的圆的直径由 D(mm),绳索的捻距由P(mm)表示。

    Pneumatic tires
    89.
    发明申请
    Pneumatic tires 失效
    气动轮胎

    公开(公告)号:US20010050127A1

    公开(公告)日:2001-12-13

    申请号:US09800787

    申请日:2001-03-08

    Abstract: A pneumatic tire has a bead core consisting of a single core and plural sheath layers formed by helically winding plural sheath wires around the core, in which an end count of sheath wires in an outermost sheath layer is made smaller than an end count at a close-packed state or each sheath wire constituting a second sheath layer from an outermost side is covered with a coating rubber prior to the winding.

    Abstract translation: 充气轮胎具有由单个芯构成的胎圈芯和通过在芯周围螺旋地缠绕多个护套线而形成的多个护套层,其中使外护套层中的护套线的端数小于封闭端数 在卷绕之前,由涂层橡胶覆盖从最外侧构成第二鞘层的包层状态或每个护套线。

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