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    • 69. 发明授权
    • Offset wound helical bead for pneumatic tires
    • 用于充气轮胎的偏心缠绕螺旋珠
    • US5099902A
    • 1992-03-31
    • US632410
    • 1990-12-21
    • Louis W. Shurman
    • Louis W. Shurman
    • B60C15/04
    • D07B1/062B60C15/04D07B7/165B60C2015/048D07B2201/2003D07B2201/2033D07B2501/2053Y10S57/902Y10T152/10819
    • A pneumatic tire bead is formed into a spiral coil consisting of a plurality of convolutions or turns of wire. The wire may be round, square, oval or hexagonal in cross section. A crimp or offset bend is made in each of the convolutions a distance of one wire width or a fraction of the wire width in each full 360 degree wire turn such that the ends of the bead wire permit the bead side walls to remain in flat parallel planes. This offset relationship reduces nonuniformity in the tire heretofore produced by spirally wound wire beads. The bead wire can be wound in a vertical plane or in a radial spiral clock-like spring fashion. In another embodiment a pair of mirror image offset coils are joined together to form a composite bead preferably for use in heavy duty applications. In still another embodiment a single flat hoop may be placed between a pair of mirror image offset coils to increase resistance to circumferential distortion.
    • 充气轮胎胎圈形成为由多个线圈或线圈构成的螺旋线圈。 导线的横截面可以是圆形,方形,椭圆形或六边形。 在每个卷绕中,在每个完整的360度线圈转动中,在每个卷绕件中产生一根线宽度或线宽度的一部分的压接或偏移弯曲,使得胎圈丝的端部允许胎圈侧壁保持平行平行 飞机 这种抵消关系降低了由螺旋卷绕的钢丝珠产生的轮胎的不均匀性。 胎圈丝可以在垂直平面中或以径向螺旋形的时钟状弹簧方式缠绕。 在另一个实施例中,一对镜像偏移线圈连接在一起以形成优选用于重型应用的复合珠。 在另一个实施例中,可以在一对镜像偏移线圈之间放置单个平环,以增加对周向变形的抵抗力。