US Patent 7991505 Materials-handling system using autonomous transfer and transport vehicles

Methods and apparatus for selecting and combining packages in an outbound container by employing autonomous transfer and transport vehicles which move on a network of roadways to carry a plurality of individual cases each containing the same kind of product from a loading station and to a destination station where individual packages are combined in the outbound container. The travel of each vehicle through the roadway network is computer controlled, and each vehicle includes means for automatically loading and unloading packages from predetermined locations on the network.