Patent ID: 6634471
Filing Date: 2003-10-21
Classification: F16F

Abstract:
A hydraulic tension stop for a vibration damper of the type comprising a cylinder, a piston rod carrying a piston, a piston rod guide, and a liquid-filled working space which is bounded axially by the piston rod guide and the piston, and radially by the cylinder and the piston rod, said tension stop comprisinga slide face which is permanently fixable to the cylinder in said working space, a circumferential rest-position channel in said slide face, said channel having a conical surface, a sleeve which is permanently fixable to the cylinder in said working space, said slide face and said channel being located in said sleeve, said sleeve having an open cross-section which varies as a function of position of the piston rod, said open cross-section being formed by a pass-through channel facing said cylinder, and a plurality of bores extending axially along said sleeve and opening in said pass-through channel, a stop ring mountable to the piston rod in the working space so that tension damping can be changed in a stroke dependent manner, and a slotted, outwardly tensioned damping ring which cooperates with said stop ring, said damping ring being slideable against said slide face and seatable in said rest-position channel when said stop ring exceeds a predetermined position.