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    • 9. 发明授权
    • Cam action tightening receiver hitch assembly
    • 凸轮动作紧固接收器挂钩组件
    • US07600774B1
    • 2009-10-13
    • US11784329
    • 2007-04-06
    • William W. SpeerW. Louis Speer
    • William W. SpeerW. Louis Speer
    • B60D1/04B60D1/155E04B9/16
    • B60D1/52B60D1/155B60D1/58Y10T403/7117
    • A hitch adapter comprises an inner square tube member for receiving Class-II 1.25″ drawbars and an outer U-channel member for plugging into a Class-III 2″ receiver. The inner square tube and outer U-channel members are welded together such that one wall of the inner square tube bridges the gap between the distal edges on opposite legs of the outer U-channel. One such leg of the outer U-channel is longer than the other and is positioned and aligned to protrude about 1/16″ beyond the adjacent outer corner of the inner square tube member. Such protrusion nests into the respective inside corner of the particular Class-III 2″ receiver it is mated to. The protrusion provides a camming action to take up any looseness and slack, and thereby eliminate wobble and rattle when installed by a user. A series of hitch pin holes allows a threaded hitch pin to pass through the adapter, a Class-II 1.25″ drawbar and a Class-III 2″ receiver. Threads inside the Class-II 1.25″ drawbar engage the hitch pin threads and provide the user a way to secure the whole assembly.
    • 挂钩适配器包括用于接收II类1.25“拉杆的内方形管件和用于插入III类”接收器的外U形通道构件。 内部方管和外部U形通道构件被焊接在一起,使得内部方管的一个壁桥接外部U形通道的相对腿上的远端边缘之间的间隙。 外U形通道的一个这样的腿比另一个长,并且被定位和对准以在内方形管构件的相邻外角之外突出大约1/16“。 这种突起嵌入与其配合的特定III类2“接收器的相应内角。 突起提供凸轮动作以承担任何松动和松弛,从而在用户安装时消除摆动和拨浪鼓。 一系列挂钩针孔允许螺纹连接销穿过适配器,Class II II“”牵引杆和Class III III“接收器。 Class-II 1.25“牵引杆内的螺纹与挂钩螺纹接合,为用户提供了一种固定整个组件的方法。