The blocked constant velocity joint is a component initially designed to allow the tilting of a pole, typically the one that holds the canvas of an umbrella. However, the applications of this joint are numerous, just think of all the low-cost manipulators and robotics. This joint, despite having only one degree of freedom, can be linked with other identical joints and consequently obtain all the degrees of freedom desired. The concatenation occurs through a predetermined angle coupling with the next node and so on. Depending on the rotation between the two joints, a displacement is generated between the two ends. Increasing the number of nodes increases the displacement until it reaches an angle of 360° or even more. The joint is designed for different angles and for different loads. It is made in two different diameters: 75mm and 90mm. The control and movement electronics are located internally and communicate with the adjacent joint or with the base via a digital bus. The electrical connection is guaranteed by means of brush contacts which guarantee a rotation of 360° and more. A control electronics external to the movement system but which knows the mechanical dimensions of the machinery, controls the rotation of all the nodes until the desired curvature is obtained and such as to bring the two ends into the desired/requested positions.