member and located radially outwards of the first portion and an intermediate portion interposed radially between the first and second portion and elongated in a direction crosswise to the axis the intermediate portion of the coupling member has from the first portion to the second portion a first portion decreasing in thickness crosswise to the direction and a second portion of constant thickness application_number US 3397708 A description with reference to fig1 to 3 number 1 indicates a transmission joint for angularly connecting a drive shaft 2 rotating about a respective axis to a shaft 4 only shown in fig3 rotating coaxially with shaft 2 more specifically transmission joint 1 receives torque from shaft 2 and transmits it to shaft 4 in addition to transmitting torque from shaft 2 to shaft 4 joint 1 also permits any in service misalignment and tilt of the axes of shaft 2 and shaft 4 more specifically joint 1 comprises a pair 20 fig3 of coupling members 5 a 5 b interposed functionally and axially between shafts 2 and 4 each coupling member 5 a 5 b is tubular and extends along an axis a coincident in use with the axes of shafts 2.