US Patent 10082726 Ball joint

A ball joint arranged to couple an attachment part to a base part is provided. The ball joint comprises: a ball associated with said attachment part and provided with a groove having ends; a ball socket formed in the base part and provided with a recess; and a coupling element. The recess and the groove are arranged such that a respective part of a coupling element is allowed to move therein. The combined arrangement of the recess, the groove, and the coupling element allows the ball to move from a first end position to a second end position by a rotational movement of at least 360 degrees. The recess is larger than the part of the coupling element located therein.