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    • 2. 发明授权
    • Key-lock spike
    • 钥匙锁钉
    • US5429300A
    • 1995-07-04
    • US180853
    • 1994-01-12
    • Jim J. Berna
    • Jim J. Berna
    • E01B9/12
    • E01B9/12
    • A two-piece locking spike which includes a first shaft having a longitudinal groove extending from the top of the shaft approximately one third of the way down along one side to a tapered bottom. A second shaft is also provided which fits into said longitudinal groove and which includes a tapered point at the bottom which corresponds to the tapered bottom of said groove. After the first shaft is inserted into a medium, the second shaft (which is longer than the groove) is inserted into the groove so that when fully inserted, the bottom of the second shaft protrudes into the medium at a different angle than the first shaft. This interaction helps lock the first shaft more snugly in place in the medium. Several alternative embodiments are available including rounded and squared spikes, nails, and screws.
    • 一种两件式锁定钉,其包括第一轴,该第一轴具有从所述轴的顶部延伸的纵向槽,大致沿着一侧向下延伸到锥形底部的三分之一。 还设置有第二轴,其配合到所述纵向槽中,并且在第二轴上包括对应于所述槽的锥形底部的底部的锥形点。 在将第一轴插入到介质中之后,第二轴(其比槽长)被插入到槽中,使得当完全插入时,第二轴的底部以与第一轴不同的角度突出到介质中 。 这种相互作用有助于将第一轴更紧密地固定在介质中。 可用的几个替代实施例包括圆形和平方的钉,钉和螺钉。