Patent ID: 7708125

Claim:
A piston-cylinder assembly having a working space, the assembly comprising: a main body having a stepped bore, the stepped bore comprising an inner bore having a first diameter and an outer bore having a second diameter larger than the first diameter; an external reservoir suitable to be partially filled with damping medium and positioned outside the main body; a connecting pipe connecting the external reservoir with the working space, the connecting pipe having an end positioned in the stepped bore; and a seal in the outer bore and held in place by the connecting pipe, wherein the bore is on a side of the main body which is diametrically opposite from the fully installed position of the external reservoir, the external reservoir and the connecting pipe are prefabricated as a single unit, wherein the single unit is configured so that the single unit must be in a position that is rotated from the fully installed position of the external reservoir about a longitudinal axis of the stepped bore when the end of the connecting pipe is installed into the stepped bore to avoid interference between the external reservoir and the main body, wherein in the fully installed position of the external reservoir opposite the stepped bore causes the end of the connecting pipe to be positioned in the bore such that the end of the connecting pipe cannot be removed from the bore without rotating the single unit about the longitudinal axis of the stepped bore.