| 摘要 |
An adjustable framework is provided for supporting elongated loads over the cargo bed of a pick-up truck and alternatively for supporting a contoured sheath to form a camper compartment above the cargo bed. The framework is comprised of paired side rails, each supported by terminal and center legs, and two transverse rails extending horizontally between said side rails. The two center legs, or the four terminal legs are adapted to provide controlled forceful upward motion. Said motion is preferably produced by a piston-cylinder mechanism.
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