| 摘要 |
A trailer (T) and a dock (D) are provided with substantially identical slat conveyors ( 10, 12 ). Each conveyor ( 10, 12 ) has alternating conveyor slats ( 36, 36 ') and lifting/holding slats ( 38, 38 '). The trailer (T) is backed up to the dock (D). Upper portions of the lifting/holding slats ( 38, 38 ') are coupled together at their ends. The confronting ends of the conveying slats ( 36, 36 ') are also coupled together. A mechanism carried by the dock (D) raises and lowers the upper portions of the two sets of lifting/holding slats ( 38, 38 ') a drive mechanism carried by the dock (D) where it reciprocates both sets of conveying slats ( 36, 36 ').
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