Patent ID: 8651253

Claim:
A damping device comprising: a housing having an end wall and an opposite end face; a piston longitudinally displaceable in the housing a first working chamber formed on a first side of the piston and a second working chamber formed on an opposite second side of the piston as a function of the displaced position of the piston; a fluid damping medium passing between the two working chambers via at least one overflow connection; a piston rod projecting in a sealed manner out of the end wall of the housing is connected on the first side of the piston, the piston rod being received within a passage opening; an elongated adjustment shaft, with a diameter corresponding substantially to a diameter of the piston rod, is connected only on the second side of the piston and passes through the second working chamber, and a free end of the adjustment shaft projecting in a sealed manner out of the opposite end face of the housing, wherein the adjustment shaft is disposed rotatably within a bearing bore defined in the piston offset laterally relative to the piston rod, the piston having further a passage bore longitudinally defined therein forming an overflow fluid damping medium connection between the working chambers; and a throttle disc projecting radially from a circumferential surface of the adjustment shaft, the throttle disc abuts the piston at an entrance to the passage bore, and the throttle disc has defined in an end face a plurality of recesses with different passage cross-sections, the plural recesses are circumferentially offset from one another and selectively alignable by rotation of the adjustment shaft within the passage bore, wherein the throttle disc has a substantially circular perimeter, each of the plural recesses are defined by two parallel surfaces extending radially inward from the perimeter of the throttle disc, the throttle disc is rotatably disposed on or in the piston and secured against longitudinal displacement in a direction of a longitudinal central axis of the adjustment shaft, and retaining devices secure the throttle disc against inadvertent rotation in the respective rotational alignment positions of the recesses with the passage bore in the piston.