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Abstract

A gas spring is described, which comprises a first part which defines a cylinder, which comprises a longitudinal axis and which is closed at a first end along the longitudinal axis. The gas spring further comprises a piston, which is arranged to be movable along the longitudinal axis in the cylinder, a piston rod which is connected to the piston and which projects out through a second end of the cylinder, a separating piston which is arranged to be movable in the cylinder along the longitudinal axis between the piston and the first end, gas which is contained in the cylinder between the separating piston and the first end, and liquid which is contained between the separating piston and the piston. Moreover, the gas spring comprises an expansion chamber for the liquid and a pressure regulating device, which is adapted to control the liquid transport between the cylinder and the expansion chamber in dependence of the temperature, thereby keeping the force characteristics of the gas spring substantially independent of the temperature.

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First Claim