| 摘要 |
A deployable set of nested ramp segments supporting a motorcycle thereon are sequentially extended or pulled in across the door edge in a carrier vehicle by sets of springs that oppose the spooling collection of a belt wound on a powered spool. Once partly extended by the springs to bring the main portion of the motorcycle to the exterior of the vehicle doorway the weight bias of the motorcycle then provides the necessary outward bias to bring it to the ground where it is released from the supporting ramp segment. On return the spooling contraction of the belt brings the motorcycle back into the vehicle.
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