US Patent 8628289 Material handling and storage/warehouse system

A system and method for optimizing the storage capacity of an automated material handling and storage system wherein rows of vertical columns of storage bins are spaced in opposing relationship with one another such that at least one elevator is vertically movable in engagement with the opposing columns of storage bins so that pallets, support platforms or containers may be transferred to or from the elevator to bins of the opposing rows and wherein the elevator may be selectively elevated by overhead carriers that are movable along an intersecting grid track system that is disposed above the storage bins. In one embodiment, the at least one elevator may be independently vertically movable between the opposing column of storage bins.