US Patent 8670892 Unmanned trackless order picking forklift system

An unmanned trackless order picking forklift system includes a vehicle-driving system, a vehicle-position-adjusting system and a pallet-scanning system each of which is provided in a forklift truck and electrically connected with a CPU device. The vehicle-position-adjusting system is operated to detect a predetermined route so that the CPU device controls the vehicle-driving system to drive the forklift truck along the predetermined route from a first position to a second position. The pallet-scanning system is operated to scan a designated pallet along the predetermined route.