Cribbing
    1.
    发明授权
    Cribbing 失效
    运动员

    公开(公告)号:US4497597A

    公开(公告)日:1985-02-05

    申请号:US411583

    申请日:1982-08-25

    IPC分类号: E21D15/02 E21D11/00

    CPC分类号: E21D15/02

    摘要: A crib member for forming underground cribbing is provided in the form of a concrete annulus formed within at least one annular metal retaining member so as to form a donut shaped member. A plurality of such members is stacked one on top of another to form a cylindrical cribbing with a central hole.

    摘要翻译: 提供形成地下埋葬的婴儿床构件以形成在至少一个环形金属保持构件内的混凝土环形的形式形成环形构件。 多个这样的构件一个在另一个的顶部上堆叠以形成具有中心孔的圆柱形塞子。

    Cribbing
    2.
    发明授权
    Cribbing 失效
    运动员

    公开(公告)号:US4565469A

    公开(公告)日:1986-01-21

    申请号:US670951

    申请日:1984-11-13

    摘要: A crib member for forming underground cribbing is provided in the form of a concrete circle containing fibre reenforcing and preferably in the form of a donut shaped member. A plurality of such members is stacked one on top of another to form a cylindrical cribbing.

    摘要翻译: 提供了一种用于形成地下埋葬的婴儿床构件,其形式为包含纤维增强的混凝土圆形,优选地以环形构件的形式。 多个这样的构件一个在另一个之上堆叠以形成圆柱形的塞子。