Patent ID: 7984669

Claim:
A power steering device for a vehicle, which is disposed in a transmission path between a steering handle and a steerable vehicle wheel, comprising a servo cylinder having two pressure chambers which are separated by a working piston and are each connected to a pressure supply unit comprising a valve plunger which is movably disposed on the working piston and seals a bypass channel between the pressure chambers, at least one adjustment bushing being disposed in the servo cylinder, the bushing comprising an adjustment section against which the valve plunger is moved upon approaching an axial end position, whereby the valve plunger is pressurized into a position that opens the bypass channel, said adjustment bushing being clamped into the servo cylinder displaceably, and the adjustment bushing comprises a sealing section, wherein the working piston is to be brought into a sealing position with the sealing section and in the sealing position the flow connection between the pressure chambers is interrupted.