It is similar to trolley conveyor due to use of discretely spaced carriers transported by an overhead chain; however, the power-and-free conveyor uses two tracks: one powered and the other nonpowered (or free). Carrier in this conveyor can be disengaged from the power chain and accumulated or switched onto spurs. It is also termed an Inverted Power-and-Free Conveyor when tracks are located on the floor. Power & free conveyors are ideally suited to demanding industrial environments that require a high degree of versatility. Power & free conveyors provide the unique ability to stop individual loads without stopping the entire production line. They offer a wide range of features including: variable chain speeds, high-speed indexing, on-line storage, and adaptability to changes in elevation - all designed to maximize your production capacity.