Overhead Conveyor / Monorail
An overhead conveyor is an elevated system similar to a floor-level conveyor belt that is used to transport items throughout a facility. Unlike a conveyor belt, which is belt-driven, an overhead conveyor is driven by a chain and is considerably thinner. The trolleys — the units that hold items — are generally rings or hooks, and each can hold a considerable amount of weight. This conveyor can be used in many types of facilities but is especially useful in those that require bends in the conveyor. Such a conveyor makes good use of space.