Fluid loss additive for cement
    1.
    发明授权
    Fluid loss additive for cement 失效
    水泥流失剂添加剂

    公开(公告)号:US4568471A

    公开(公告)日:1986-02-04

    申请号:US566199

    申请日:1983-12-28

    申请人: Camille Defosse

    发明人: Camille Defosse

    CPC分类号: C09K8/46 C04B24/163

    摘要: An aqueous solution of a terpolymer, useful as fluid loss agent for drilling muds and not for cement slurries, is treated with acid and heat. An excellent fluid loss agent for cement is obtained. Very efficient liquid additive, for all purposes, which does not modify either the rheology, nor substantially the setting time.

    摘要翻译: 三元共聚物的水溶液,用作钻井泥浆而不用于水泥浆的流体损失剂,用酸和热处理。 获得了优异的水泥流失剂。 非常有效的液体添加剂,用于所有目的,不会改变流变性,也不会改变凝固时间。

    Quick-release coupling
    3.
    发明授权
    Quick-release coupling 失效
    快速联轴器

    公开(公告)号:US4550935A

    公开(公告)日:1985-11-05

    申请号:US451538

    申请日:1982-12-21

    IPC分类号: F16L37/12 F16L35/00

    CPC分类号: F16L37/12 Y10S285/92

    摘要: The invention relates to a quick-release coupling, more particularly intended for hose pipe assemblies used at sea.Said coupling is composed of two jaws which cooperate with truncated parts of the coupling members and are held together or released by the movement of a finger sliding inside bores provided in said jaws.The coupling according to the invention offers improved efficiency and reliability.

    摘要翻译: 本发明涉及快速释放联轴器,更具体地涉及用于海上的软管管组件。 所述联轴器由两个钳口组成,两个钳口与联接构件的截头部分配合,并且通过在设置在所述钳口中的孔内滑动的手指的移动而保持在一起或释放。 根据本发明的联接器提供了提高的效率和可靠性。