Patent ID: 8585069

Claim:
A telescopic suspension fork leg comprising: an inner tube and an outer tube; a damping arrangement; a spring arrangement arranged inside a first chamber defined in the outer tube and supported against a second chamber formed by the damping arrangement and arranged beneath the first chamber which is constructed to receive a damping fluid; wherein the damping arrangement has a piston, supported on a piston rod with an upper and a lower piston surface, and the piston being displaceable within a damping tube arranged largely concentrically to the inner tube, and the damping tube is surrounded by an annulus chamber arranged largely concentrically to the damping tube; a sealing arrangement, displaceable along the piston rod, provided between the first and the second chambers; wherein the piston rod is provided with a fluid duct for fluidic communication of the first and second chambers, releasable with the sealing arrangement in a state of the damping arrangement substantially unstressed by the spring arrangement; wherein the fluid duct is provided with a transition surface in a transition region between a contact surface with the sealing arrangement, in which the fluidic communication is interrupted, and an adjacent surface, in which the fluidic communication is released, such that a contact surface formed along an inner perimeter line of the sealing arrangement and the transition surface varies on a relative movement between the sealing arrangement and the transition surface without a jump function.