Railroad spike
    1.
    发明授权
    Railroad spike 失效
    铁路钉

    公开(公告)号:US5160085A

    公开(公告)日:1992-11-03

    申请号:US793559

    申请日:1991-11-08

    IPC分类号: E01B9/06

    CPC分类号: E01B9/06 Y10S411/922

    摘要: An improved railroad spike, configured to resemble a conventional U.S. railroad spike as to its head, shank and tip. The improved spike features (1) a keyhole bore which extends between and through the head and top of the spike, and (2) and a pair of angular V-grooves on the shank in communication with the bore.

    摘要翻译: 一种改进的铁路钉,被配置为类似于常规的美国铁路钉,关于其头部,柄部和尖端。 改进的钉头特征(1)一个在孔尖顶部和顶部之间延伸穿过孔眼的钥匙孔,以及(2)和与孔相通的柄上的一对角V形凹槽。