US Patent 11254518 Automated unloading and loading robot system

A system includes a robot configured to load and/or unload from a location, such as a cargo carrier or building. The robot includes a base unit that has a transport system to move the base unit. A mast extends from the base unit, and the mast has a mast conveyor. An End of Arm Tool (EoAT) is coupled to the mast. The EoAT includes an EoAT conveyor configured to move a cargo item to and from the mast conveyor. A gripper mechanism is configured to move between a retracted position where the gripper mechanism is clear of the cargo item on the EoAT conveyor and an extended position where the gripper mechanism is able to grip the cargo item.