Patent ID: 7631739

Claim:
A dual clutch for a transmission with a first transmission input shaft and a second transmission input shaft that is positioned in coaxial relation to the first transmission input shaft, the dual clutch comprising: a coupling flange connected in a torque transmitting manner with a motor; a first clutch connecting the coupling flange with the first transmission input shaft in a torque transmitting manner; a second clutch connecting the coupling flange with the second transmission input shaft in a torque transmitting manner; a clutch hub positioned in coaxial relation to the first and second transmission input shafts, the clutch hub comprising: a first hydraulic unit for actuating the first clutch, and a second hydraulic unit for actuating the second clutch; a clutch axle supporting the clutch hub in a rotatable manner and being hydraulically connected with the clutch hub for feeding oil from the clutch axle to the clutch hub; a clutch portion comprising a hollow cylinder portion for transmitting torque, wherein said hollow cylinder portion is provided in a radial position between the clutch axle and the clutch hub, rotatable in relation to the clutch axle and the clutch hub, and comprises at least one opening allowing oil to be fed from the clutch axle to the clutch hub.