US Patent 7993206 Torque fluctuation absorber

A torque fluctuation absorber, including: an output plate that is rotatably disposed; a first rotating plate disposed for movement in the direction of rotation of the output plate relatively from the output plate; a first elastic member engaged with the output plate and the first rotating plate and capable of transmitting the power applied to the first rotating plate to the output plate; a second elastic member to which the power from a power source is applied and capable of transmitting the power to the first rotating plate; and a power transmission control mechanism. The power transmission control mechanism is located radially outside the first elastic member about an axis of rotation. The second elastic member is spaced from the first elastic member and the power transmission control mechanism in the direction of the axis of rotation. The first elastic member and the second elastic member are arranged radially offset.