FEREI AOTOAO Patent Technology — Operating Principle and Advantages:
Thanks to the fully-geared driving mechanism formed by the upper and lower ratchet wheels, power is transmitted rapidly and with high efficiency. The large clearance between the non-engaged side of the hub and the ratchet wheel makes maintenance and servicing easier.

In addition, the ratchet wheels receive evenly distributed force because multiple springs engage both the upper and lower ratchets simultaneously, ensuring that every engagement is completed reliably. This design guarantees that the upper and lower ratchet wheels fully complete their all-gear engagement without slipping or disengagement during operation.