Clutch disc

a power train for use in a motor vehicle, comprising:

• a prime mover having a rotary output element;
• a transmission having a rotary input element coaxial with said output element;
• and
• an engageable and disengageable friction clutch including:
• a flywheel coaxial with and arranged to be driven by said output element,
• a clutch disc coaxial with and arranged to rotate with said output element in the engaged condition of said clutch, said clutch disc including at least one input section having friction linings engaged by and receiving torque from said flywheel in the engaged condition of the clutch and said clutch disc further including an output section coaxial with and in torque transmitting engagement with said at least one input section,
• a dynamic damper having a mass, and
• means for transmitting torque between said mass and said clutch disc, said torque transmitting means including a rotary oscillation damper having energy storing means and said torque transmitting means further including a slip clutch in series with said oscillation damper, wherein said energy storing means elastically couples the mass to the clutch disc, thereby enabling the mass to perform rotary oscillations relative to the clutch disc.