Patent ID: 8376111

Claim:
A torque transmitting device for selectively transmitting torque between a first member and a second member, the torque transmitting device comprising; an apply plate translatable along an apply axis, wherein the apply plate comprises an annular disc having an inner edge and an outer edge, an aperture disposed through the annular disc radially between the inner edge and the outer edge and an annulus extending axially from the inner edge of the annular disc; an annular piston disposed adjacent apply plate and having an apply face that is planar, the annular piston translatable along the apply axis; a biasing member in operational engagement with at least one of the apply plate and the piston, the biasing member configured to translate at least one of the annular piston and the apply plate along the axis; and a clutch pack disposed adjacent the apply plate, the clutch pack connected to the first member and the second member, wherein the clutch pack selectively transmits torque between the first member and the second member when the apply face of the piston contacts the apply pate and translates the apply plate to engage the clutch pack and wherein torque is selectively not transmitted between the first member and the second member when the biasing member translates at least one of the apply plate and the piston to disengage the clutch pack.