1. Rotating pendulum absorbers with partly solid and partly liquid inertia members with mechanical or fluid damping;Carter,1929
2. Device apted to eliminate oscillations;Salomon,1933
3. Means adapted to reduce the torsional oscillations of crankshafts;Sarazin,1937
4. Pendulum counterweight;Chilton,1938
5. Eliminating crankshaft torsional vibration in radial aircraft engines;Taylor,1936