The following U.S. Patent provides background information and is incorporated herein by reference in entirety.
U.S. Pat. No. 8,931,420 discloses a pallet or cart which can be coupled to a similar pallet or cart in a side by side relationship. The pallet or cart, at its one or right side, has a coupling, which cooperates with an associated coupling on the opposite or left side of an adjacent pallet or cart. The couplings and the associated couplings can be connected to connect the two pallets or carts together to make them capable of being moved together and even be lifted and lowered together by a standard lift truck or forklift or a standard pallet jack. The couplings are also releasable so that, when necessary, each pallet or cart may be used as would be a single pallet or cart. The pallet or cart may have one or more foldable shelves therein.