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    • 5. 发明授权
    • Lifting hook for erecting steel joists
    • 起重吊钩用于架设钢托梁
    • US08562047B2
    • 2013-10-22
    • US13492562
    • 2012-06-08
    • James R. Parker
    • James R. Parker
    • B66C1/62
    • B66C1/66
    • A lifting hook for lifting open-frame steel joists comprises a casing having a shaft passing through it. The shaft has a lifting eye at one end and a hook member at the other end. The hook member comprises a U-shaped body having a transverse width selected to be less than the gap between the angles that form the upper flange of the open-frame joist. The hook member has a throat that is larger than the width of the flange. The shaft is spring-loaded so that the hook member is pulled toward the lower bearing surface of the casing so that once the hook member has been inserted into the joist, it is keyed to the flange and will not come loose.
    • 用于提升开放式框架钢托梁的吊钩包括具有穿过其的轴的壳体。 轴在一端具有起吊眼,另一端具有钩构件。 钩构件包括具有选定为小于形成开框架托梁的上凸缘的角度之间的间隙的横向宽度的U形本体。 钩构件具有大于凸缘宽度的喉部。 轴是弹簧加载的,使得钩构件被拉向壳体的下支承表面,使得一旦钩构件已经插入托梁中,则该构件被键接到凸缘并且不会松动。
    • 6. 发明申请
    • LIFTING HOOK FOR ERECTING STEEL JOISTS
    • 钢丝绳起重吊钩
    • US20130099516A1
    • 2013-04-25
    • US13492562
    • 2012-06-08
    • James R. PARKER
    • James R. PARKER
    • B66C1/36
    • B66C1/66
    • A lifting hook for lifting open-frame steel joists comprises a casing having a shaft passing through it. The shaft has a lifting eye at one end and a hook member at the other end. The hook member comprises a U-shaped body having a transverse width selected to be less than the gap between the angles that form the upper flange of the open-frame joist. The hook member has a throat that is larger than the width of the flange. The shaft is spring-loaded so that the hook member is pulled toward the lower bearing surface of the casing so that once the hook member has been inserted into the joist, it is keyed to the flange and will not come loose.
    • 用于提升开放式框架钢托梁的吊钩包括具有穿过其的轴的壳体。 轴在一端具有起吊眼,另一端具有钩构件。 钩构件包括具有选定为小于形成开框架托梁的上凸缘的角度之间的间隙的横向宽度的U形本体。 钩构件具有大于凸缘宽度的喉部。 轴是弹簧加载的,使得钩构件被拉向壳体的下支承表面,使得一旦钩构件已经插入托梁中,则该构件被键接到凸缘并且不会松动。