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    • 43. 发明授权
    • Method and apparatus for molding bent pipes made up of composite material
    • 由复合材料制成弯管的方法和装置
    • US4483670A
    • 1984-11-20
    • US422560
    • 1982-09-24
    • Masahiko YamamotoYoshinori NishinoAkio KomuraTomio Ebisu
    • Masahiko YamamotoYoshinori NishinoAkio KomuraTomio Ebisu
    • B29C33/50B29C43/12B29C5/04
    • B29C33/50B29C43/12B29L2023/004
    • A method and apparatus for manufacturing bent pipes of a composite material composed of resin and filling materials such as reinforcing materials and aggregates by employing a cylindrical molding tool which is deformable between straight-axis form and bent-axis form. Materials are supplied into the molding tool held in horizontally straight condition while the tool is rotated about a horizontal axis, and are molded into a pipe by centrifugal molding. Rotation of the tool is stopped when the pipe molded therein is in uncured state, then the tool is subjected to bending. The resulting bent pipe is removed after it is cured. Before the tool is bent, a bag made of a flexible sheet material is inserted into the pipe and inflated to straighten out the inner periphery of the pipe so as to protect the pipe from any possibility of deformation during bending operation. The molding tool is preferably made of such resilient material as rubber, is incased in a peripherally divisible frame or bellows-type flexible frame which, in turn, is suitably incased in a rotary frame. More preferably, the molding tool has a hollow space provided between its inner and outer walls; by filling liquid in the hollow space it is possible to achieve fine roundness in pipe molding irrespective of dimensional errors with the molding tool or frame.
    • 一种用于制造由树脂和填充材料如增强材料和骨料组成的复合材料的弯曲管的方法和装置,该方法和装置采用可在直轴形和弯轴形之间变形的圆柱形模具。 当工具围绕水平轴旋转时,将材料供给到水平直线状态的模具中,并通过离心模塑成型为管。 当模制在其中的管子处于未固化状态时,工具的旋转停止,然后该工具受到弯曲。 所得到的弯管在固化后被去除。 在工具弯曲之前,将由柔性片材制成的袋子插入管中并充气以使管道的内周伸直,以便在弯曲操作期间保护管道不发生变形的可能性。 模制工具优选地由诸如橡胶的弹性材料制成,被包围在可外围可分割的框架或波纹管型柔性框架中,该框架或波纹管型柔性框架进而适当地在旋转框架中被覆盖。 更优选地,模制工具具有设置在其内壁和外壁之间的中空空间; 通过在中空空间中填充液体,可以实现管模中的细圆度,而与成型工具或框架的尺寸误差无关。
    • 46. 发明申请
    • PNEUMATIC TIRE
    • 气动轮胎
    • US20100186867A1
    • 2010-07-29
    • US12301841
    • 2007-05-10
    • Masahiko Yamamoto
    • Masahiko Yamamoto
    • B60C9/08B60C9/00
    • B60C9/0042B60C9/2009B60C9/22
    • Provided is a pneumatic tire in which changes in steering stability with changes in speed, temperature environment, etc. during running are greatly reduced.A pneumatic tire has a tread part 1, sidewall parts 2, and bead parts 3, and includes a carcass layer 5 composed of at least one carcass ply, a belt layer 6 composed of at least one belt ply, and at least one belt protective layer 7. A cord having a difference in heat shrinkage stress between 30° C. and 80° C. of not less than 3.0×10−2 cN/dtex is used as at least one cord in the belt protective layer 7, and the reduction rate of the dynamic storage modulus of elasticity E′ of a coating rubber of the belt layer 6 in a temperature change from 30° C. to 80° C. is not less than 5%.
    • 提供了一种充气轮胎,其中大大降低了在行驶过程中转向稳定性随速度,温度环境等变化的变化。 充气轮胎具有胎面部1,侧壁部2和胎圈部3,并且包括由至少一个胎体帘布层构成的胎体层5,由至少一个带束层组成的带束层6和至少一个皮带保护层 使用在30℃至80℃之间的热收缩应力差不小于3.0×10-2cN / dtex的帘线作为带束保护层7中的至少一根绳索,并且 带束层6的涂层橡胶的动态储能弹性模量E'在30℃至80℃的温度变化的降低率不小于5%。
    • 47. 发明申请
    • PNEUMATIC TIRE
    • 气动轮胎
    • US20100180998A1
    • 2010-07-22
    • US12301812
    • 2007-05-22
    • Masahiko Yamamoto
    • Masahiko Yamamoto
    • B60C9/00
    • B60C9/08B60C9/0042B60C9/2009D02G3/48
    • The following tire is provided: a pneumatic tire in which steering stability is securely prevented from being varied due to changes in running speed or ambient temperature.The pneumatic tire includes a tread part 1, sidewall parts 2, bead parts 3, a carcass layer 5 including at least one carcass ply, bead fillers 8, belt layers 6 each including at least one belt ply, and at least one belt-protecting layer 7. The carcass layer includes at least one carcass ply cord. The difference between the heat shrinkage stress of the carcass ply cord at 30° C. and that of the carcass ply cord at 80° C. is 3.0×10−2 cN/dtex or more. The reduction rate of the 30-80° C. dynamic storage elastic modulus E′ of rubber used to form the bead fillers 8 is 5% or more.
    • 提供以下轮胎:可靠地防止由于行驶速度或环境温度的变化而改变操纵稳定性的充气轮胎。 充气轮胎包括胎面部分1,侧壁部分2,胎圈部分3,包括至少一个胎体帘布层的胎体层5,胎圈填料8,每个包括至少一个带束层的带束层6和至少一个皮带保护 胎体层包括至少一个胎体帘布层绳索。 胎体帘布层在30℃下的热收缩应力与80℃下胎体帘布层的热收缩应力之差为3.0×10-2cN / dtex以上。 用于形成胎圈填料8的橡胶的30-80℃动态储存弹性模量E'的还原率为5%以上。