Patent ID: 7866452

Claim:
A vibration damper for vehicles comprising: a piston; a piston rod connected to the piston; a work cylinder in which the piston is guided axially by the piston rod wherein the piston divides the work cylinder into two work spaces filled with damping fluid, the piston configured to conduct flow therethrough and to provide damping in both inward and outward movements of the piston in the work cylinder; a piston rod guide located where the piston rod is introduced to the work cylinder; a tension stop element located between the piston and the piston rod guide, the tension stop element being axially movable relative to the piston on the piston rod, and the tension stop element comprising a ring-shaped reinforcing part having two axial ends and a flexible element radially enclosed by and fixedly connected to said reinforcing part, said flexible element having at least one protuberance on one axial side of said tension stop element such that said protuberance is part of said flexible element, the protuberance being deformable in response to an axial force on the tension stop element, an axial length of said reinforcing part limiting the deformation of the flexible element so that a permissible shearing stress of the flexible element is not exceeded; and a support fastened to the piston rod and located between the piston and the tension stop element, wherein the at least one protuberance extends in an axial direction towards the support fastened to the piston rod, the at least one protuberance configured to contact the support fastened to the piston rod in an extended position of the piston rod.