While the swivel wheel is the most common for multi-directional movement, its biggest disadvantage is leaving the track when changing direction from forward to backward. After experimenting with different omni-balls for a robot design, Dr. Helmut Fritz discovered that combining the omni-ball with the cantilever of a swivel roller yielded an entirely new wheel. One that keeps a straight line even when direction is changed from forward to backward… introducing the Excenterball.
Designer: Dr. Helmut Fritz
