Patent ID: 8567576

Claim:
A hydropneumatic telescopic strut for a bicycle, comprising: a shock absorber having a damper cylinder filled with an incompressible damper fluid, a damper piston configured for displacement in the damper cylinder, and a damper piston rod with which the damper piston is operated from outside the damper cylinder; a gas pressure spring having a spring cylinder filled with a compressible suspension fluid and a spring piston arranged such that the spring piston is displaceable in the spring cylinder, wherein the shock absorber and the gas pressure spring are connected in parallel with one another and the shock absorber and the gas pressure spring is telescoped upon spring deflection and rebound of the telescopic strut; an equalization reservoir having an equalization chamber, the equalization reservoir connected with the damper cylinder such that the damper fluid is provided for volume equalization of a time-variable displacement of the damper fluid by the damper piston rod upon spring deflection and rebound of the telescopic strut; a displaceable separator element positioned in the equalization chamber to delimit the equalization chamber with which volume equalization is accomplished via displacement of the separator element; an auxiliary spring chamber filled with suspension fluid; a switching device; and a coupling with which the switching device is coupled with the separator element such that the auxiliary spring chamber is connected with the spring cylinder, wherein if the separator element is arranged in a position range between a first predetermined position and a second predetermined position, suspension fluid is conducted, and if the separator element is arranged outside of the position range, the auxiliary spring chamber is isolated in terms of suspension fluid from the spring cylinder.