Patent ID: 8109491

Claim:
A vibration damper, comprising: a cylinder filled with a damping medium; an axially movable piston arranged in said cylinder and connected to a piston rod; a stop spring arranged between a first stop surface in a working space of said cylinder and a second stop surface forming an axial boundary of the working space, said stop spring being compressed between said first and second stop surfaces after the piston rod reaches a defined stroke position, said stop spring defining a radially inner space and a radially outer space in the working space, wherein said stop spring has at least one discharge groove in one end thereof, one of said first stop surface and said second stop surface being formed by a rigid body defining a radial channel extending from the radial inner space to the radial outer space when said one end of said stop spring contacts said one of said first and second stop surfaces, and said discharge groove in said stop spring and said radial channel in said one of said first stop surface and said second stop surface overlap at least over a portion of their length in the installed position of the stop spring.