US Patent 9903440 Shackle with captured pin assembly

A shackle with captured pin assembly. The shackle includes a pair of opposed legs. A first ear for one of the opposed legs includes an opening therethrough to receive a shackle pin. A recess in the opening receives a spring clip surrounding a shaft of the shackle pin. A second ear for another of the opposed legs is opposed to the first ear. The second ear has an opening therethrough to receive the shackle pin and has an opening with a threaded portion. The shackle pin has a head, a threaded portion engageable with the threaded portion of the second ear opening, and a reduced diameter portion. The rotating retaining clip rotates about an axis parallel to the shackle pin between a locked and an unlocked position.