Gas spring for chair support column has sliding piston dividing pressure cylinder into 2 working chambers one of which is divided into 2 pressure chambers by sliding separation piston

摘要

The gas spring has a pressure cylinder (1) containing a sliding piston (4) dividing it into 2 working chambers (5,6) filled with a pressure medium, coupled together via a bypass line controlled by a blocking valve (18). The first working chamber is divided by a sliding separation piston (7) into 2 pressure chambers (8,9), the first pressure chamber coupled to the second working chamber via the bypass line and the second pressure chamber coupled to the second working chamber via a flow opening.