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    • 12. 发明申请
    • PNEUMATIC TIRE FOR MOTORCYCLE
    • 摩托车气动轮胎
    • US20090266462A1
    • 2009-10-29
    • US12094685
    • 2006-11-29
    • Masahiko YamamotoHidenobu Akahane
    • Masahiko YamamotoHidenobu Akahane
    • B60C9/00B60C9/02B60C9/18
    • B60C9/0042B60C9/08B60C9/20
    • A pneumatic tire for a motorcycle, wherein the tire is optimized in the ground contact shape and the ground contact pressure distribution during high-speed running to achieve excellent driving stability, is provided. Furthermore, a pneumatic tire for a motorcycle, wherein the tire is optimized in the ground contact shape and the ground contact pressure distribution during high-speed running to realize excellent gripping force to stabilize the behavior of the tire near its cornering limit and excellent cornering ability, is provided.Provided is a pneumatic tire for a motorcycle, which employs a multifilament-twist polyketone fiber cord, as a reinforcing material, having a total dtex value of 1000 to 20000 dtex per cord and satisfying the relationships represented by the following Expressions (I) and (II): σ≧−0.01E+1.2  (I) σ≧0.02  (II) (wherein, E is an elastic modulus (cN/dtex) at 25° C. under a load of 49 N, and σ is a heat shrinkage stress (cN/dtex) at 177° C.).
    • 本发明提供一种摩托车用充气轮胎,其特征在于,轮胎在高速行驶中的接地形状和接地压力分布优化,达到良好的行驶稳定性。 此外,一种用于摩托车的充气轮胎,其中轮胎在高速行驶期间以接地形状和接地压力分布优化,以实现优异的夹紧力,以使轮胎的转弯极限附近的行为稳定并具有优异的转弯能力 ,被提供。 本发明提供一种摩托车用充气轮胎,其采用复丝扭转聚酮纤维帘线作为增强材料,每根绳索的总dtex值为1000〜20000dtex,满足下述表达式(I)和( II):σ= -0.01E + 1.2(I)σ= 0.02(II)(其中,E是在25℃,49N负荷下的弹性模量(cN / dtex),σ是 在177℃下的热收缩应力(cN / dtex))。
    • 13. 发明申请
    • Pneumatic tire for motorcycle
    • 摩托车气动轮胎
    • US20060266457A1
    • 2006-11-30
    • US10568340
    • 2004-07-12
    • Masahiko Yamamoto
    • Masahiko Yamamoto
    • B60C15/04
    • B60C15/04B60C2015/046D07B1/0633D07B2201/2051D07B2801/12
    • This invention relates to a pneumatic tire for a motorcycle improving a cornering stability, and more particularly to a pneumatic tire for a motorcycle comprising a pair of bead portions 2, a carcass 1 wound around a bead core 3 embedded in the respective bead portion, a tread portion arranged on an outside of a crown portion of the carcass and a pair of sidewall portions extending inward from both ends of the tread portion in a radial direction of the tire, in which the bead core 3 is a cable bead and a geometric second moment coefficient Σ(π/64×d4) of the bead core 3 (wherein d is a diameter of each filament constituting the bead core) satisfies an equation of 0.50
    • 本发明涉及一种提高转弯稳定性的摩托车用充气轮胎,更具体地说,涉及一种摩托车用充气轮胎,其包括一对胎圈部2,卷绕在嵌入胎圈部的胎圈芯3的胎体1, 胎体部分布置在胎体的胎冠部分的外侧;以及一对侧壁部分,其沿轮胎的径向方向从胎面部分的两端向内延伸,胎圈芯3是电缆胎圈,几何秒 胎圈芯3(其中d是构成胎圈芯的每根细丝的直径)的力矩系数Σ(pi / 64xd4)满足0.50 )<1.50。
    • 17. 发明申请
    • Run-Flat Tire
    • 跑步轮胎
    • US20080156409A1
    • 2008-07-03
    • US11795516
    • 2006-01-20
    • Hiroyuki YokokuraHidenobu AkahaneYugo ZuigyoDaisuke MaeharaMasahiko Yamamoto
    • Hiroyuki YokokuraHidenobu AkahaneYugo ZuigyoDaisuke MaeharaMasahiko Yamamoto
    • B60C17/04
    • D02G3/48B60C9/0042B60C9/0207B60C9/04B60C9/09B60C15/0018B60C15/0036B60C17/0009B60C2015/0639Y10T152/10828Y10T152/10864Y10T428/2967
    • This invention relates to a tire having an improved durability in the run-flat running without damaging the ride comfort in the usual running, and more particularly to a run-flat tire comprising a sidewall portion provided with a side reinforcing rubber layer having a crescent shape at section wherein a cord layer including a polyketone fiber cord satisfying the following conditions of the following equations (I) and (II): σ≧−0.01×E+1.2   (I) σ≧0.02   (II) [wherein σ is a thermal shrinkage stress at 177° C. (cN/dtex) and E is an elastic modulus at 25° C. under a load of 49 N (cN/dtex)] is disposed in at least a part of a region A ranging from a belt end to a maximum width part of a tire side portion and a region B ranging from a neighborhood of a bead core to a bead filler.
    • 本发明涉及一种轮胎,其在平直行驶中具有改善的耐久性,而不损害通常行驶中的乘坐舒适性,更具体地,涉及一种具有侧壁部分的防浪胎轮胎,侧胎部分设置有具有月牙形的侧面增强橡胶层 在其中包含满足以下等式(I)和(II)的以下条件的聚酮纤维帘线的帘线层的部分:<?in-line-formula description =“在线公式”end =“lead”→sigma > = - 0.01xE + 1.2(I)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“ (“N”)= 0.02(II)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中sigma是177℃的热收缩应力(cN / dtex ),E是在49N(cN / dtex)的载荷下在25℃下的弹性模量]设置在范围从轮胎侧部的带端到最大宽度部分的区域A的至少一部分中 和一个区域B从一个 胎圈芯与胎圈填料的邻接。