Patent ID: 7207887

Claim:
A torque fluctuation absorbing device comprising: a first rotational member which transmits a torque from a driving power source; a damping mechanism connected with an input shaft of a transmission, the damping mechanism comprising coil springs positioned between a side plate and a hub; and a limiter portion comprising a pair of approximately annular-shaped frictional members fixed at both surfaces of a disc connected with the side plate, the pair of frictional members constantly engaging the first rotational member in a direct manner or in an indirect manner via a pair of frictional plates by a disc spring; wherein the pair of frictional members are positioned at an outer side of the coil springs in a radial direction, and at least one of the pair of frictional members includes a non-frictional portion at a rate substantially between 20 percent and 80 percent of an entire frictional surface area of the at least one of the pair of frictional members.