Patent ID: 8167099

Claim:
A damper having at least one pneumatic chamber, the damper comprising: an annular compression chamber having a cylindrical inner wall and a cylindrical outer wall, the outer wall defining a radial opening; a hollow cylindrical tube forming a first channel, the tube connected to the inner wall of the compression chamber; a body surrounding and attached to the annular compression chamber; and a control piston configured to move relative to the body, the control piston having a rod connected to a head, wherein the rod protrudes from the body, and the head is configured to slide in the compression chamber; wherein the radial opening of the compression chamber has a section that is variable depending on a position of the piston; wherein the body and the outer wall of the annular compression chamber form a second channel to hydraulically link the radial opening with the first channel; and wherein the control piston and an end of the hollow cylindrical tube form a hydraulic compensation chamber configured to receive a first fluid expelled from the annular compression chamber via the radial opening when the control piston moves.