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    Trailer Jack With Safety Features
    1.
    发明申请
    Trailer Jack With Safety Features 审中-公开
    拖车杰克安全功能

    公开(公告)号：US20110073821A1

    公开(公告)日：2011-03-31

    申请号：US12771519

    申请日：2010-04-30

    申请人： David B. Nirenberg

    发明人： David B. Nirenberg

    IPC分类号： B60S9/02

    CPC分类号： B60S9/14 ,  B60D1/66 ,  B60S9/22

    摘要： A jack assembly including a jack body sub-assembly and a swivel plate. The jack assembly preferably includes the following indicators: (i) at least one jack extension indicator for indication the extension position of the jack; and/or (ii) a disengagement indicator for indicating disengagement of rotational constraints as between the jack body sub-assembly and the load to which the jack is secured (for example, the swivel plate on the tongue of a trailer). In a preferred embodiment, the fixed-engagement indicator takes the form of a marking on a pin that: (i) engages with a swivel plate to rotationally constrain the jack body with respect to the swivel plate; and (ii) disengages with the swivel plate to allow relative rotation of the jack body relative to the swivel plate.

    摘要翻译： 一种千斤顶组件，包括千斤顶主体子组件和旋转板。 插座组件优选地包括以下指示器：（i）用于指示千斤顶的延伸位置的至少一个插座延伸指示器; 和/或（ii）分离指示器，用于指示在千斤顶主体子组件和千斤顶被固定的负载之间（例如，拖车的舌头上的旋转板）之间的旋转约束的分离。 在优选实施例中，固定接合指示器在销上采取标记的形式：（i）与旋转板接合以相对于旋转板旋转地限制千斤顶主体; 和（ii）与旋转板分离以允许千斤顶体相对于旋转板的相对旋转。

    Shifting-truck
    10.
    发明授权
    Shifting-truck 失效

    公开(公告)号：US296865A

    公开(公告)日：1884-04-15

    申请号：US296865D

    CPC分类号： B60S9/14