Concrete pipe stabilizing ring
    2.
    发明授权
    Concrete pipe stabilizing ring 失效
    混凝土管稳定环

    公开(公告)号:US3852018A

    公开(公告)日:1974-12-03

    申请号:US32833173

    申请日:1973-01-31

    Inventor: KARLSEN B

    CPC classification number: B28B21/92 B28B21/98

    Abstract: A ring for stabilizing the upper end of concrete pipes during their hardening, comprising an inner and an outer ring part, one of which presents a shaping face for the pipe while the other one is provided with an inflatable annulus serving, when inflated, to press the pipe material, while still plastic, firmly against said shaping face.

    Abstract translation: 一种用于在其硬化期间稳定混凝土管的上端的环,包括内环和外环部分,其中一个内管和外环部分呈现用于管道的成形面,而另一个具有充气环,当膨胀时, 管材同时仍然是塑料,牢固地抵靠所述成形面。

    Device for molding pipe having a spigot end
    3.
    发明授权
    Device for molding pipe having a spigot end 失效
    具有SPIGOT端的成型管的装置

    公开(公告)号:US3813203A

    公开(公告)日:1974-05-28

    申请号:US25654072

    申请日:1972-05-24

    CPC classification number: B28B21/76

    Abstract: A spigot-end shaper has an inner ring and a concentric outer ring that is slotted and is radially expandable. In molding, the inner ring shapes the end face of the spigot and the outer ring shapes the spigot''s outer wall, being clamped around the inner ring. In a mold-removing position, the outer ring is freely axially displacable away from the spigot end.

    Abstract translation: 插口端整形器具有内圈和同心外圈,其开槽并且是可径向扩张的。 在成形时,内圈形成插口的端面,并且外环形成套管的外壁,被夹紧在内圈周围。 在脱模位置中,外环可自由地轴向移动以远离插口端。

Patent Agency Ranking