Object holder column for chair, has piston arranged at piston rod and moved in cylinder area in longitudinal extension direction of rod, where cylinder area filled with fluid i.e. compressed gas, is connected with storage area over throttle

摘要

The column has a gas spring (4) comprising a closed guide tube, where an inner area of the spring is divided into two working chambers by a piston. A piston rod (3) is arranged at the piston and guided through one of the chambers. A manually operated valve device connects the working chambers, and a cylinder is arranged at the piston. Another piston is arranged at the piston rod and moved in a coaxial cylinder area in a longitudinal extension direction of the piston rod. The cylinder area filled with fluid i.e. compressed gas, is connected with a storage area over a throttle.