YooK

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Yook is a patented mechanical device which can turn most drones into a delivery drone. Yook, self-decouples the payload from drone at destination. Yook also decouples and releases the payload in event of overload thus protects the drone to crash when payload line is pulled down intentionally or caught on tree or power line. Yook works on mechanical kinematics hence no internal or external power source is needed. This makes Yook a special device to deliver items in wide variety of situations.