Abstract: A double-counterpoised flywheel for an internal combustion engine. A counterweight is disposed on the engine side and another counterweight is disposed on the transmission side, both counterweights allowing limited mutual rotation through the intermediary of elastic members. A damping system is arranged between the two counterweights and parallel to the elastic members. The two counterweights bear on each other radially and axially through an antifriction bearing. The inner race of the antifriction bearing is mounted between a stop face of the primary mass and a holder disk that is secured to the end face of the primary mass on the power take-off side. The holder disk is provided with at least two pins which are created by driving them out of the material of the holder disk ("part-shearing") toward one and the same side of the holder disk. The end face of the hub of the primary mass is provided with holes for receiving the pins, which pins are pinch-fitted into the holes.

Abstract: The invention concerns a torsionally elastic clutch whose clutch halves are nested in disk fashion and feature window-shaped cutouts which house tangentially arranged helical springs, with an outer guide body arranged in the outer peripheral area of the individual spring and preventing the spring from buckling, which body is shorter than the spring. The clutch is characterized in that an inner guide body is provided also within the individual spring, which body is shorter than the spring, and in that the two guide bodies are in relation to the spring fixed in such a way that one guide body will remain constantly coordinated with the one end area of the spring and the other guide body constantly with the other end area of the spring.