Abstract: A modular storage apparatus for movably supporting one or more storage units in front of a plurality of non-movably supported storage units. The apparatus comprises a plurality of independent, modular base sections each having a pair of tracks thereon which are securable together via cam lock coupling devices to form a single, rigid, lightweight, elongated base assembly. A leveling and supporting system associated with each base unit enables the entire base assembly to be precisely leveled. The base units each support at least one carriage unit which in turn supports an independent storage unit thereon. An anti-tip system prevents each movable storage unit from tipping or leaning beyond a predetermined degree. The modular construction enables the apparatus to be easily and conveniently shipped, packaged and handled and the assembled base assembly does not need to be secured to a supporting floor.

Abstract: A large capacity mobile storage system having a plurality of storage units and a plurality of interconnected support assemblies for rolling movement. Each of the support assemblies includes a frame and a pair of spherical shaped hardened steel support wheels. Only one of the support assemblies includes a pair of guide rollers disposed perpendicular to its associated support wheels in order to maintain rolling movement of the storage system along a linear path. The support wheels of the other support assemblies are allowed to move independently from one another in order to prevent the scrubbing action of the supporting apparatus. The supporting assemblies also include a drive track and a sprocket disposed at one end of the storage unit with a drive mechanism. This feature helps to keep the floor area between the flat tracks uncluttered. The apparatus compensates for a significant degree of unlevelness and undulation of the flat tracks caused by an unlevel floor upon which the flat tracks are mounted.