are discs arranged on each of the shafts a pair of elements project from each of the discs being spaced from the axis thereof and angularly spaced around the axis the elements project different distances from the discs in a direction parallel to the axes the elements are connected by parallel rods which are articulatd at their ends to the elements application_number US 78983577 A description fig1 shows the principle of a system of transmitting power in which a common disc 10 is connected to a driving unit not shown by way of a shaft 11 the function of the system is to transmit the torque of the shaft 11 to the shaft 12 of a disc 13 through a joint 14 in the joint 14 there are arranged two discs 16 and 17 on a common shaft 15 between the disc 10 and the disc 16 there are arranged two parallel articulated rods 18 which are pivoted to the discs 10 and 16 by means of shafts 19 arranged perpendicular to the articulated rods 18 between the disc 17 and the disc 13 there are arranged two further parallel articulated rods 20 which are pivoted to the discs 17 and 13 by means of shafts 19 arranged perpendicular to the articulated rods 20 the shafts 19 are arranged to subtend at an angle of 90 u00b0 with each other on each disc 10.