Pallet return pallet rack system

DETAILED DESCRIPTION The present invention preserves the advantages of known pushback rack and other pallet rack storage systems.
In addition, the present invention provides new advantages not found in currently available systems and overcomes many of the disadvantages that may be associated with known devices.
Therefore, an object of the present invention is to provide a pallet return pallet rack system where unloaded, wheeled carts and pallets are selectively and automatically returned from an unloading end to a loading end without the operator having to physically remove the pallet or cart.
Another object of the present invention is to provide a pallet return pallet rack system that automatically transfers unloaded carts and pallets from an unloading end and returns them to a loading end where they may be conveniently stored, repositioned or re-used.
An additional object of the present invention is to provide a pallet return pallet rack system that can store loads of multiple pallets deep in a first in, first out inventory basis and automatically transfer unloaded carts for subsequent loading from a different access aisle.
A further object of the present invention is to provide a pallet return pallet rack system where the return of unloaded carts and pallets is selectively accomplished through an easily operable and convenient release mechanism.
Still another object of the present invention is to provide a pallet return pallet rack system having wheeled carts that operate in rolling relation to an upper pair of rails and are capable of automatic transfer to a rolling relation with a lower pair of rails.
Still an additional object of the present invention is to provide a pallet return pallet rack system having wheeled carts that securely retain pallets during loading and during the transfer of the carts from the unloading end to the loading end.
Still a further object of the present invention is to provide a transfer means for the automatic return of unloaded carts and pallets to a loading end without interfering with the rolling relationship and/or lateral alignment of the carts on the upper or lower pair of rails