Mine roadway support stilt
    1.
    发明授权
    Mine roadway support stilt 失效
    矿井巷道支撑高耸

    公开(公告)号:US4382721A

    公开(公告)日:1983-05-10

    申请号:US279403

    申请日:1981-07-01

    申请人: Norman S. King

    发明人: Norman S. King

    IPC分类号: E21D11/18 E21D15/22 E21D11/00

    CPC分类号: E21D15/22 E21D11/183

    摘要: A mine roadway support stilt includes, on two opposing faces thereof, a plurality of deformable, longitudinally extending indentations and, on the remaining faces, additional indentations to inhibit improper insertion of the I-beam joist support normally received in said stilt.

    摘要翻译: 矿井道路支撑高架在其两个相对的表面上包括多个可变形的纵向延伸的凹陷,并且在其余的表面上包括另外的压痕,以阻止正常接收在所述高跷中的工字梁托梁支架的不正确插入。