Patent ID: 6935475

Claim:
A ball ramp clutch for a motor vehicle driveline comprising, in combination, an input member, an output member, a first circular member disposed for rotation with said input member and defining a first plurality of arcuate recesses and a first spring engaging feature, a rotor, a second circular member secured to said rotor, disposed adjacent said first circular member and defining a second plurality of arcuate recesses and a second spring engaging feature, a plurality of load transferring members disposed in said recesses, a torsion spring operably disposed between said first and said second spring engaging features of said circular members and, a friction clutch pack assembly having a first plurality of friction discs secured for rotation with said input member and a second interleaved plurality of friction discs secured for rotation with said output member, whereby relative rotation between said first circular member and said second circular member provides compressive force to said friction clutch pack.