the torsional flexible connection has two coaxial flanges or discs equipped with sets of equidistant radially or axially protruding blades which are interdigitated to form a plurality of wedge - shaped chambers whose sides intersect at the axis of the connection , all or some of which receive torque - transmitting flexible inserts which transmit force and rotation to one of the flanges / discs in response to the force and rotation transmitted from the other flange / disc or vice versa . each insert is comprised of two or several elements of a streamlined shape placed at different distances from the axis , so that the dimensions of these elements in the direction of transmitted payload are proportional to their distances from the axis .