Joints with two flexible elements connected by center pipe.
Accommodates deflection in any direction or plane. i.e. Axial, Angular, and Lateral or in any combination.
Universal joint can accommodate very large amount of lateral movement by providing long center pipe to have a very low lateral spring force.
Thermal expansion and excessive weight of the long center pipe has to be taken into account.
Restrained and Unrestrained conditions are same as Axial Joint.