Patent ID: 8597148

Claim:
A bearing arrangement for a driveshaft ( 1 ) in a transmission housing ( 5 ) of an automatic transmission, the bearing arrangement supporting the driveshaft, the driveshaft being rotatable about a central axis via the bearing arrangement, an actuating piston ( 6 ) of a shifting element ( 7 ) being arranged inside the driveshaft and being axially slidable within the driveshaft along the central axis, an oil supply duct ( 9 ) communicating with the actuating piston ( 6 ), and the oil supply duct ( 9 ) supplying a pressure medium which facilitates shifting movement of the shifting element ( 7 ) along the central axis, at least one self-sealing bearing forming a pressure medium seal between the driveshaft ( 1 ) and the transmission housing ( 5 ) for preventing the pressure medium from escaping into an unpressurized portion of the transmission housing ( 5 ), and the bearing arrangement being provided at least on a side of the driveshaft adjacent and proximate to the transmission housing ( 5 ) and remote from a drive input.