US Patent 7147092 Multiple clutch unit

A multiple clutch unit for a power train. The clutch includes a first clutch, particularly a multiple-disk clutch that is non-rotatably connected to a first shaft. A second clutch, particularly a multiple-disk clutch, is non-rotatably connected to a second shaft and is arranged coaxially with the first clutch. The clutches can be actuated by means of piston/cylinder units, particularly hydraulically. The piston/cylinder unit associated with the first clutch includes a substantially cup-shaped cylinder that is connected to and cooperates with the first shaft in a non-rotatable but axially movable manner.