| 摘要 |
A car top carrier is capable of both horizontal and vertical movement. The carrier has two telescoping tracks for horizontal movement. When the tracks are fully extended a finger in each track mechanically locks into place, thereby preventing any further horizontal movement. The carrier is vertically slidable by pulling a spring loaded plunger. Gravity allows the carrier to descend so that the load can be removed. The vertical descent is controlled by standard pneumatic or hydraulic cylinders. An electrical interlock between the engine ignition and the locked car top carrier prevents the load from sliding off the roof of the car due to centrifugal force.
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