Patent ID: 6964315

Claim:
A power transmission device comprising: a first rotary member, a second rotary member; a friction clutch operably disposed between said first and second rotary members; a clutch actuator for applying a clutch engagement force to said friction clutch, said clutch actuator assembly including a rotary drive member having a first segment with rollers and a second segment having gear teeth, a non-rotary cam member having a tapered drive surface in engagement with said rollers, a thrust member disposed between said cam member and said friction clutch, a gearset meshed with said gear teeth on said second segment of said drive member, and an electric motor driving said gearset; and a control system for actuating said electric motor so as to control the direction and amount of rotary movement of said gearset and said drive member which, in turn, controls the direction and amount of translational movement of said cam member.