Patent ID: 8245823

Claim:
A vibration damper comprising: a cylinder; a piston rod guided with freedom of axial movement in the cylinder; a first piston fixed to the piston rod; and a structural unit mounted on the piston rod with freedom of axial movement relative to the first piston against the force of at least one support spring, the structural unit comprising a second piston equipped with at least one valve disk loaded against the second piston by a spring arrangement; a retaining sleeve having a first longitudinal end and a second longitudinal end opposite the first longitudinal end, which carries the second piston between the first and second longitudinal ends and prevents axial movement of the second piston relative to the retaining sleeve, the retaining sleeve comprising two axial retaining sleeve parts, each axial part having a plurality of finger snap hooks spaced around a circumference of the respective retaining sleeves and retaining groove segments arranged on an outside surface of the respective plural snap hooks, the second piston retained on the two axial retaining sleeve parts by arrangement of the second piston in the retaining groove segments of the plural finger snap hooks the retaining sleeve comprises the two axial sections which are held together by latching to the second piston, wherein the finger snap hooks on a first one of the two axial retaining sleeve parts interdigitate with the finger snap hooks on a second one of the two axial retaining sleeve parts; at least one spring plate connected to the retaining sleeve at a joint which prevents movement of the spring plate relative to the retaining sleeve, the spring arrangement being located between the at least one spring plate and a respective at least one valve disk.