Spiral gears are a type of gear used to transmit power between non-parallel shafts, typically at a right angle. They feature teeth that are cut at an angle to the gear axis, allowing for smoother and quieter operation compared to straight gears. This design helps distribute the load over a larger area, reducing wear and increasing efficiency. These gears are commonly found in various applications, including automobiles, industrial machinery, and aerospace systems. Their ability to handle high torque and provide precise motion makes them essential in many mechanical systems where reliability and performance are crucial.