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    • 1. 发明授权
    • Self-closing gas pipes and pipe joints
    • 自闭式气管和管接头
    • US4267853A
    • 1981-05-19
    • US877566
    • 1978-02-13
    • Yukio YamaguchiKenji IshiharaKikuo Yonekura
    • Yukio YamaguchiKenji IshiharaKikuo Yonekura
    • F16K17/38C01B31/04
    • F16K17/383Y10T137/1624Y10T137/1963
    • A gas pipe including a tube of expansible material defining a passage for gas and capable of expansion, when heated, to close the passage upon carbonization. The tube is surrounded by a cylindrical noninflammable member.A joint for connecting gas pipes which includes a tube of expansible material contained in a metallic tubular member and defining a passage for gas. The tube is capable of expansion, when heated, to close the passage upon carbonization.A method of manufacturing thermally expansible rubber tube for the gas pipe and the gas pipe joint. About 2 to 30 parts by weight of oxidized, thermally expansible graphite powder is mixed with 100 parts by weight of raw rubber, and a predetermined quantity of a curing agent and a cure accelerator are added to the rubber and graphite mixture, followed by its formation into a tubular shape.
    • 一种气体管道,其包括可膨胀材料管,其限定用于气体的通道,并且当被加热时能够膨胀以在碳化时闭合通道。 该管被一个圆柱形的不可燃物体包围。 用于连接气体管道的接头,其包括容纳在金属管状构件中并限定气体通道的可膨胀材料管。 当加热时,管能够膨胀,以在碳化时封闭通道。 一种制造用于气体管道和气体管接头的热膨胀性橡胶管的方法。 将约2〜30重量份氧化的,可膨胀石墨粉末与100重量份生橡胶混合,并将预定量的固化剂和固化促进剂加入到橡胶和石墨混合物中,随后形成 成为管状。