US Patent 6974008 Hydrodynamic converter with primary and converter bridging clutches

A hydrodynamic converter (1) for the drive train of a motor vehicle is proposed, which comprises a pump (2), a turbine (3) which is connected to a transmission input shaft (4), a stator (5), a primary clutch (PK) which connects a drive (6) detachably to the pump (pump impeller) (2) and a converter bridging clutch (WK), which connects the drive (6) detachably to the transmission input shaft (4), in which the primary clutch (PK) and the converter bridging clutch (WK) can be actuated by a common piston (8) via a common oil supply (9).