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热词
    • 92. 发明授权
    • Combination screw
    • 组合螺丝
    • US3661046A
    • 1972-05-09
    • US3661046D
    • 1970-11-09
    • ILLINOIS TOOL WORKS
    • WAUD CORNELIUS BYRONGRUCA NED J
    • F16B25/00F16B43/00F16B35/00
    • F16B25/0057F16B25/0021F16B25/0047F16B43/001Y10S411/915
    • A fastener unit for use in metal building construction in which a compressible sealing washer is used in combination with a threaded shank including a threaded portion of limited axial extent having a crest diameter substantially greater than the crest diameter of the remaining threads on the shank. The fastener unit is capable of being utilized to attach two relatively thin sheets of material while at the same time is configured in such a manner to be able to fasten a thin sheet of material to a structural member. The larger diameter threaded section pulls at least one sheet of material up towards the head of the fastener as the fastener is tightened and the sealing washer is compressed.
    • 一种用于金属建筑结构的紧固件单元,其中可压缩密封垫圈与螺纹柄组合使用,所述螺纹柄包括具有有限轴向范围的螺纹部分,其顶部直径基本上大于柄上剩余螺纹的波峰直径。 紧固件单元能够用于附接两个相对薄的材料片,同时被配置成能够将薄片材料紧固到结构构件上。 当紧固件被紧固并且密封垫圈被压缩时,较大直径的螺纹部分将至少一片材料拉向紧固件的头部。