Gas spring for securing between stationary frame for building and movable frame for smoke ventilation window, has opening/closure component or cylinder provided with deformation component, which is deformed with certain temperature

摘要

The spring (10) has a piston dividing an inner part of a tubular cylinder (11) in two chambers. A piston rod (17) comprises an end side connected with the piston and another end side that extends over an opening/closure component (13) to an exterior. Gas and lubricant i.e. oil, are encapsulated in the cylinder. The opening/closure component or cylinder is provided with a deformation component, which is deformed with certain temperature that is equal to or less than a boiling point of the lubricant in case of a typical operation such that the gas in the cylinder is leaked.