Abstract: An interlocking three-dimensional solid puzzle having component pieces that can be interlocked into an assembled configuration without any significant internal voids. The component pieces include sliding control mechanisms to control movement of the pieces and are preferably structured such that specific movement of one or more pieces is required before any piece can be removed. The sliding control mechanism preferably includes an array of mating projecting studs and channels on the individual puzzle pieces that cooperate to selectively limit movement of the pieces, and or provide false moves that do not advance assembly and/or disassembly. The present invention provides a new class of interlocking solid puzzles characterized as being challenging to assemble and disassemble while having a lower piece count than comparable existing puzzles.

Abstract: A deployable cargo supporting apparatus for pickup trucks that is deployable from a stowed configuration wherein load support beams are secured along each of the cargo box side walls by specially configured brackets, to a deployed configuration wherein the load support beams are transversely disposed across the width of the cargo box, in an elevated position above the floor, and secured on opposing ends by said brackets. In the stowed configuration, each load support beam, and a pair of tie-down devices slidably disposed thereon, is secured parallel to the cargo box sidewall proximate the top portion thereof by retaining pins projecting from each of the brackets.