Oscillation damper with piston fixed to piston rod

摘要

The piston body is connected to the cylinder pipe (13) by at least one axially moving piston ring (11). The piston ring is controlled by the frictional force produced between the cylinder pipe and piston ring. At least one advanced opening is positioned between the piston ring surfaces facing the piston and the piston. The advanced opening is attached to a duct (73) joining the top and bottom piston side near the piston body's peripheral surface (77).