A coupling

摘要

A coupling comprising first and second coupling elements, adapted to couple together from an uncoupled state to a coupled state, by relative rotational movement there-between is disclosed. The first coupling element comprises a first part that defines opposed first and second outer walls, and a second part that extends outwardly from the first wall, and which has a distal end, and a length between the second wall and the distal end. The second coupling element comprises a receptacle for receiving the second part, where the receptacle is defined between opposed first and second surfaces which are spaced apart by a distance for accommodating the length of the second part. A latch means is disposed between the opposed first and second surfaces of the receptacle. An aperture, which is defined by and between the latch means and the first surface of the receptacle for permitting the second part of the first coupling element to pass there-through into the receptacle and engage with the latching means on relative rotation between the first and second coupling elements.