A golf trolley

摘要

In a drive coupling an inner component 13 has a part spherical outer surface 16 and an outer component 20 has a part spherical inner surface which is a close sliding fit over part of the outer surface of the inner component, a pair of ball bearings 24 each being located in a respective recess in one of the surfaces and engaging in a groove 17 of semi-circular cross-section in the other surface. The grooves extend in a common plane through a rotational axis of the associated component and the ball bearings 24 are located at opposite ends of a diameter in said plane. Rotation of the inner component about its drive axis will cause the outer component to rotate about an axis which may be at a variable angle relative to the drive axis, since the outer component is free to move through a limited angle in said plane by travel of the ball bearings along the groove. The ball bearings may be replaced by members attached to one component movable along grooves in the other component. The coupling may be incorporated in a foldable golf trolley having an electric motor/drive assembly (41, Figs 4,5).