发明名称 ROCK BOLT
摘要 <p>A rock bolt which includes a tubular member, a device at one end of the tubular member for mechanically anchoring the tubular member inside a hole in a rock face, a bar which is partly inside the tubular member with a threaded portion which projects from the tubular member, and wherein the tubular member is formed with load resisting formations which restrain the bar from being pulled out of the tubular member.</p>
申请公布号 WO2003042501(A1) 申请公布日期 2003.05.22
申请号 ZA2002000178 申请日期 2002.11.15
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