Patent attributes
A beam assembly is formed from a hollow beam member which has a pair of slidable channel units installed therein and extend from the opposite ends thereof. The ends of the channel units have guide shoes forming latching assemblies pivotally supported thereon, each guide shoe having a spring loaded lock key mounted pivotally mounted thereon. A pair of tracks are spaced from each other in opposing relationship by a distance equal to the longitudinal extent of the beam member. The tracks have a plurality of aligned apertures and C-shaped runners running along their longitudinal extent. The lock keys of the beam member each has a pair of latching fingers extending therefrom which fit into a pair of adjacent track apertures. The latching fingers may be locked in place in the opposing track apertures by the spring action of their associated springs and may be withdrawn from the apertures by way of a hook shaped tab attached thereon. A tool is provided to move the hook shaped tabs away from the track to release the latching fingers from engagement with the apertures in the track and, is desired to move the hook shaped tabs downwardly to move the guide shoes downwardly to a desired location on the track. The guide shoes further have T-shaped portions which engage the C-shaped runners of the tracks to retain the guide shoes on the tracks for vertical movement. A pair of the beam members may thus be raised and lowered on the track and provide support for pallets, planking or the like.
