Patent ID: 7182190
Filing Date: 2007-02-27
Classification: F16F

Abstract:
1. A piston-cylinder assembly comprising: a cylinder having a central axis, the cylinder being fitted with a piston rod guide and having an inner wall with at least one radially inward extending projection adjacent to the piston rod guide on one side of the axis; a piston rod and a piston installed in the cylinder with freedom of movement along the central axis, the piston having an outer diameter and carrying a piston seal which is in contact with the inner wall of the cylinder, the piston seal having an outer diameter, the piston and the piston seal dividing the cylinder into a working space on the piston rod side and a working space away from the piston rod, said working space being filled with a working medium; and a stop disk mounted on the piston rod axially adjacent to the piston, the stop disk having an outer diameter greater than the outer diameter of the piston, but smaller than the outer diameter of the piston seal, whereby, in the event of the piston seal being destroyed in a fire, the stop disk rests against the at least one projection and the piston rod is tilted with respect to the central axis so that the working medium can escape around the piston, and the stop disk having non-throttling pass-through openings to permit flow of the working medium from the working space away from the piston rod into the working space on the piston rod side.