Fig. 7
From: RWD-DOF: a dual-degree-of-freedom reconfigurable wheel design for improved robotic mobility

Schematic diagram of a reconfigurable wheel and schematic diagram for 2-DOF motion.
From: RWD-DOF: a dual-degree-of-freedom reconfigurable wheel design for improved robotic mobility

Schematic diagram of a reconfigurable wheel and schematic diagram for 2-DOF motion.