Patent ID: 7699740

Claim:
A friction coupling assembly, arranged in series between two axially fixed supporting faces, comprising: an actuator in the form of a ball ramp assembly with two discs which are arranged coaxially relative to one another, of which one is axially supported and the other one is axially displaceable, wherein the axially supported disc is held in a rotationally fixed way relative to a first one of the two supporting faces, and the displaceable disc is rotatingly drivable, wherein the two discs, on their end faces facing one another, each comprise a plurality of ball grooves which, in opposed circumferential directions, comprise an increasing depth, wherein in pairs of opposed ball grooves there are received balls via which the two discs are axially supported; a plate package arranged adjacent and coaxially relative to the discs and having outer plates for connecting in a rotationally fixed way to a coupling carrier, and inner plates in a rotationally fixed way to a coupling hub which is rotatable relative to the coupling carrier, wherein the outer plates and the inner plates are arranged so as to alternate in the axial direction; and a plate spring for introducing a force into the plate package, the plate spring is arranged coaxially relative to the discs, is axially pretensioned, and is arranged in series with the plate package, wherein the plate spring is arranged axially between the rotatingly drivable disc and the plate package, and wherein the plate spring is supported by a ball bearing such that the rotatingly drivable disc is rotatable relative to said plate spring.