| 摘要 |
A boat trailer centering accessory device for fitment to each rear corner of a boat trailer and which is a pair of boom gate frames which can be swung single-handedly and independently from a forward rest position for road transport alongside a trailer and clear of a boat and then rearwardly out over the water, with the trailer on a launching ramp out of the water, to form a centering causeway for a floating boat supported by the water. Each boom gate is formed as a generally quadrilateral shaped closed frame pivotally attached at one corner to a bracket which is mounted rearwardly on the side member of the trailer and is formed as an elongated U-shaped bracket with two short arms connected by a longer arm, one short bracket arm forms a pivot axle for a sleeve bearing mounted on the corner of the boom gate frame, while the longer arm also serves as a stop for limiting the drop height of the frame when it is swung to the forward transport position from the rearward centering position. The bracket also cradles the frame when being transported.
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