Polycone clutch with roller ramp actuator

A torque transfer mechanism for transferring drive torque from a rotary input member to a rotary output member, comprising:

• a friction clutch including a center ring having conically shaped friction surfaces and first and second outer rings positioned on opposite sides of the center ring, the first outer ring and the second outer ring each including a plurality of conically shaped and radially spaced apart friction surfaces being selectively engageable with the friction surfaces of the center ring;
• and
• a clutch actuator including a roller clutch having a first set of cam surfaces adapted to be fixed for rotation with the rotary input member, a radially expandable slipper having a second set of cam surfaces, a plurality of rollers positioned between opposing pairs of the cam surfaces, a first wedge slide and a second wedge slide, each of the wedge slides being radially outwardly moveable by radial expansion of the slipper, each wedge slide including a tapered surface for driving one of the first and second outer rings into engagement with the center ring to transfer torque between the rotary input and rotary output members.