Lift - Action Lift-Action gas springs are usedfor counterbalance of weights. The Lift-Action gas spring gives a counter force in the same direction as a compression spring and consist of a tube, filled with nitrogen gas. A lift- Action gas springs could be effectively used to offset the reaction force ofcoverlet or opening and closing cockpit, which has heavyweight. It makes easyto control of heavy weights and it makes idéal device for lifting and lowering safely. In comparison with other mechanical springs, Lift-Action gas spring makes little différence of force with long stroke.