Abstract: A power transmitting shaft for a torque transmission assembly is formed with a tubular cross section having bores arranged radially in the tube wall at at least one tube end and with bushes inserted into the bores. The bushes are provided with recesses for receiving joint journals or the like whose longitudinal axis is arranged radially in the tube for the purpose of introducing a torque, with tangential and radial forces occurring at the transmitting face of the tube wall. The bushes are designed as a truncated cone which is tapered towards the tube interior and with a cone angle .alpha. selected to be such that the radial component of the forces to be transmitted at the transmitting face is minimized or eliminated.

Abstract: A shaft coupling assembly having a first and a second internal fluid chamber system, each containing therein a fluid medium which is placed under pressure when torque is transmitted through the coupling assembly, each of the fluid chamber systems including a plurality of chambers and a plurality of channels which converge from a common point placing the channels in flow communication with each other and which interconnect the plurality of chambers of each of the systems. The channels of the first and the second systems are axially offset relative to each other and each of the systems is designed to create a throttling effect offering resistance to flow of the fluid medium within each of the systems. The coupling assembly enables compensation for axial, radial, angular and/or torsional shaft offset and, additionally, makes it possible to damp the vibrations in an axial, radial, angular and torsional direction and to adjust the stiffness of the coupling assembly.