Patent ID: 8151963

Claim:
A power transmitting apparatus comprising: a clutch housing rotatable together with an input member and supporting a plurality of driving clutch plates; a clutch member supporting a plurality of driven clutch plates alternately arranged between the driving clutch plates via spline fitting and connected to an output member; a pressure member mounted on the clutch member so as to be axially movably therealong and configured to provide pressure-contact and release between the driving clutch plates and the driven clutch plates; at least one clutch spring configured to bias the driving clutch plates toward the driven clutch plates and into pressure contact with each other; and back-torque limiting cams configured to release the connection between the driving clutch plates and the driven clutch plates when the rotation speed of the output member exceeds that of the input member; wherein a rotational force input to the input member can be transmitted to the output member by pressure-contacting driving clutch plates and the driven clutch plates and the rotational force input to the input member can be cut-off from the output member by releasing the driving clutch plates and the driven clutch plates from each other; and means for limiting a movement of the pressure member toward a direction away from the clutch member.