A cylinder piston device.

摘要

According to an illustrative example of the invention a gas spring is provided with an emergency exit permitting escape of pressurized gas in case of said pressurized gas exceeding a predetermined pressure. The emergency exit is provided by a radial bore (13) through the cylinder (1) or longitudinal grooves (20)(13). The radial bore is covered unter normal conditions by a piston rod seal (6). This piston rod seal (6) is axially displaceable by said pressurized gas at said predetermined pressure such that the radial bore (13) is opened for escape of pressurized gas. <IMAGE>