Abstract: A torque transmitting apparatus which can be installed between the prime mover and the transmission of a motor vehicle has a primary flywheel connectable to the output element of the prime mover. A secondary flywheel is coaxial with and rotatable relative to the primary flywheel. A friction clutch with a clutch disc drives the input element of the transmission when the clutch is engaged. A damper is provided between the two flywheels. The damper and the friction clutch constitute a power train which is provided with a coupling device serving to afford access to the clutch disc without damage to the elements of the power train, and with one or more slip clutches which limit the magnitude of the torque transmittable from the primary flywheel to the clutch disc in the engaged condition of the friction clutch. The slip clutch or slip clutches can form part of the coupling device or vice versa.