Patent attributes
A hydraulic vibration damper, in particular for a vehicle chassis, includes a cylinder tube for receiving a hydraulic fluid. A piston is axially movable within the cylinder tube along a cylinder tube axis and subdivides the cylinder tube into two working chambers. A piston rod is oriented parallel to the cylinder tube axis and is connected to the piston. At least one valve assembly for damping the piston movement in a direction of actuation is arranged at a fluid leadthrough. A bypass duct includes a sub-duct provided in addition to the fluid leadthrough between the two working chambers. A valve arrangement with continuously adjustable damping force is provided which regulates the throughflow through the fluid leadthrough and the sub-duct. The sub-duct includes a throttling mechanism, having a throttle, and a non-return valve. The throttle and the non-return valve of the sub-duct are arranged in series.
