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    • 72. 发明授权
    • Cable protection system and method of reducing an initial stress on a cable
    • 电缆保护系统和减少电缆初始应力的方法
    • US08881521B2
    • 2014-11-11
    • US13587383
    • 2012-08-16
    • Alan L. BrownePaul W. AlexanderNancy L. Johnson
    • Alan L. BrownePaul W. AlexanderNancy L. Johnson
    • F01B29/10F02G1/04D02G3/02D02G3/36E01D19/16D07B5/12D07B1/06D07B5/00
    • D07B5/00D07B1/0673D07B5/12D07B2201/2009D07B2205/3085E01D19/16D07B2801/10
    • A method of reducing an initial stress on a cable includes stretching the cable to a first length to thereby define the initial stress. The cable has a central longitudinal axis, and includes a plurality of wires each twisted around the axis and formed from a shape memory alloy transitionable in response to a signal between a first state wherein each of the wires has a first temperature-dependent length, and a second state wherein each of the wires has a second temperature-dependent length that is less than the first. After stretching, the method includes activating the alloy by exposing the alloy to the signal such that the alloy transitions from the first to the second temperature-dependent state. Concurrent to activating, the method includes elongating the cable to a second length that is greater than the first to define a second stress on the cable that is less than the first.
    • 减少电缆上的初始应力的方法包括将电缆拉伸到第一长度,从而限定初始应力。 所述电缆具有中心纵向轴线,并且包括多个电线,每个电线绕所述轴线扭转并且由形状记忆合金形成,所述形状记忆合金可响应于第一状态而可转换,所述信号处于第一状态,其中每条电线具有第一温度依赖性长度,以及 第二状态,其中每条线具有小于第一温度的第二温度依赖长度。 拉伸后,该方法包括通过将合金暴露于信号来激活合金,使得合金从第一温度依赖于第二温度依赖状态转变。 与激活同时,该方法包括将电缆延伸到大于第一长度的第二长度,以限定小于第一应力的电缆上的第二应力。
    • 80. 发明申请
    • Graphene-Based Threads, Fibers or Yarns with Nth-Order Layers and Twisting and Methods of Fabricating Same
    • 基于石墨烯的螺纹,纤维或具有N阶层的纱线和捻合及其制造方法
    • US20140050920A1
    • 2014-02-20
    • US13966700
    • 2013-08-14
    • NthDegree Technologies Worldwide Inc.
    • William Johnstone RayMark David Lowenthal
    • D01F9/12D02G3/36
    • D01F9/12B82Y30/00B82Y40/00D02G3/16D02G3/36D10B2101/122Y10T428/292
    • A representative embodiment includes a graphene-based fiber comprising: a starting strand; and a plurality of coatings of aligned graphene comprising: a first coating of aligned graphene axially offset at a first angle from an axis of the starting strand; a second coating of aligned graphene over the first coating and axially offset at a second angle from the axis of the starting strand; and at least one next coating of aligned graphene over a preceding coating and axially offset at a next angle from the axis of the starting strand. Another embodiment includes a plurality of intertwined and twisted graphene-based fibers. In various embodiments, the graphene may be graphene ribbons or carbon nanotubes or both. The graphene ribbon includes a plurality of aligned and overlapping graphene flakes in a polymer. Methods of fabrication are also disclosed.
    • 代表性的实施方案包括基于石墨烯的纤维,其包含:起始链; 以及多个对准的石墨烯涂层,包括:与起始股线的轴线成第一角度轴向偏移的对准石墨烯的第一涂层; 在第一涂层上的对准的石墨烯的第二涂层并且以与起始股线的轴线成第二角度轴向偏移; 以及在先前的涂层上的对准的石墨烯的至少一个下一个涂层,并且与起始股线的轴线成一个下一个角度轴向偏移。 另一个实施例包括多个相互缠绕和扭曲的基于石墨烯的纤维。 在各种实施方案中,石墨烯可以是石墨烯带或碳纳米管或两者。 石墨烯带包括在聚合物中的多个对准且重叠的石墨烯薄片。 还公开了制造方法。