Patent ID: 8678149

Claim:
A gas spring system comprising: a first part which defines a cylinder, said cylinder includes a longitudinal axis and a first end which is closed along the longitudinal axis; a piston which is arranged to be movable in said cylinder along said longitudinal axis; a piston rod which is connected to said piston and projects out through a second end of said cylinder; a separating piston which is arranged to be movable in said cylinder along said longitudinal axis between said piston and said first end; a gas which is contained in said cylinder between said separating piston and said first end; a liquid which is contained between said separating piston and said piston; an expansion chamber for the liquid; and, a pressure regulating device designed to control liquid transport between said cylinder and said expansion chamber in dependence of a temperature to thereby keep force characteristics of said gas spring substantially independent of said temperature, said pressure regulating device including a measuring liquid chamber and a pressure tube, said measuring liquid chamber contains a measuring liquid, said pressure tube including a pressure spindle that is movably arranged in said pressure tube, a position of said pressure spindle in said pressure tube being dependent on a volume of said measuring liquid, said liquid transport between said cylinder and said expansion chamber being controlled by said position of said pressure spindle.