US Patent 7941243 Storage system

A very high density storage system comprising a storage grid having a number of storage cells and individual cargo carriers where a cargo carrier is stored in a storage cell. The storage system uses a unique set of individually actuatable gear drives on both the top and bottom of each storage cell, but installed at 90 degrees to each other, to move the cargo carrier to a specific storage cell. Software controls and manages the location of each cargo carrier such that when a specific cargo carrier is desired, software instructions cause the cargo carriers to be shuffled within the storage grid until the desired cargo carrier is located at the desired position, such as an unloading position.