Cover for concrete voids of lifting inserts
    3.
    发明授权
    Cover for concrete voids of lifting inserts 失效
    盖子用于提升插件的混凝土空隙

    公开(公告)号:US4386486A

    公开(公告)日:1983-06-07

    申请号:US253592

    申请日:1981-04-13

    IPC分类号: E04C2/52 E04G21/14 B66C1/66

    CPC分类号: E04G21/142 E04C2/526

    摘要: A plug frictionally fits within the lifting eye of an anchor insert of a tilt-up wall slab. The plug is provided with pin receiving passageways whereby a pin-bearing cover plate may be attached to the plug to cover over the access recess to the anchor insert.

    摘要翻译: 一个插头摩擦地配合在倾斜墙板的锚定插入件的起吊眼内。 插头设置有销接收通道,由此可以将销轴承盖板附接到插头以覆盖到锚固插入件的进入凹部。

    Method of fabricating a composite structure
    4.
    发明授权
    Method of fabricating a composite structure 失效
    制造复合结构的方法

    公开(公告)号:US4357193A

    公开(公告)日:1982-11-02

    申请号:US40799

    申请日:1979-05-21

    摘要: A method of fabricating a composite structure wherein a porous laminate comprised of a plurality of plies of fibrous material in an uncured resin matrix has entrapped air expelled. In carrying out the method, the laminate is positioned in an evacuable chamber. Vacuum is applied to the chamber to create a partial vacuum environment therein. The laminate is heated to within a temperature range wherein the resin matrix exhibits a viscosity which allows air migration through the resin matrix. The laminate is maintained within the temperature range for a time duration sufficient to expell entrapped air. The laminate can then be cured using vacuum to compress the laminate.

    摘要翻译: 制造复合结构的方法,其中在未固化的树脂基质中由多层纤维材料组成的多孔层压体被截留的空气排出。 在实施该方法时,将层压体定位在可抽空的室中。 将真空施加到室以在其中产生部分真空环境。 将层压体加热到其中树脂基质表现出允许空气迁移通过树脂基质的粘度的温度范围内。 层压板在该温度范围内保持足够的时间以排出夹带的空气。 然后可以使用真空固化层压体以压缩层压体。