Patent ID: 8534439

Claim:
A clutch comprising: a first rotary shaft member; a second rotary shaft member; a clutch pack having a plurality of first clutch members and a plurality of second clutch members, the first clutch members being coupled to the first rotary shaft member for rotation therewith, the second clutch members being interleaved with the first clutch members and being coupled to the second rotary shaft member for rotation therewith; a pair of pivot arms, each of the pivot arms having a first portion to which a cam follower is mounted and a second portion, each of the pivot arms being pivotable between a first arm position and a second arm position to change a clamping force applied by the pivot arms to the clutch pack, wherein a clamping force associated with the second arm position is greater than a clamping force associated with the first arm position, each of the pivot arms having a follower; and an actuator assembly comprising a movable member and a linear motor, the movable member being disposed about the second rotary shaft member and being received between the pivot arms, the movable member defining a cam surface and an interior chamber that is located radially inwardly of the cam surface, the followers being in rolling contact with the cam surface, wherein at least a portion of the linear motor is received in the interior chamber.