Crown gear, also known as a crown wheel, is a type of gear used in mechanical systems to transmit motion and torque between shafts that are not aligned. It typically features a circular shape with teeth cut into its edge, allowing it to mesh with a pinion gear. This design is commonly found in applications like differential gears in vehicles, where it helps distribute power to the wheels. The unique design of crown gears allows for smooth operation and efficient power transfer. They can be used in various machinery, including watches, bicycles, and industrial equipment. Their ability to handle high loads makes them essential in many engineering applications.