Patent ID: 8763981
Filing Date: 2014-07-01
Classification: A47B,A47C,F16F

Abstract:
1. An object support column comprising: a vertical tube; a base part arranged at a first end of the vertical tube; a guide bush fastened to a second end of the vertical tube opposite the base part; a telescope tube movable along a center longitudinal axis in the guide bush arranged coaxially in the vertical tube, the telescope tube having a first end and a second end opposite the first end of the telescope tube; a pressure tube of a gas spring filled with a compressed gas, the pressure tube having a first end and a second end opposite the first end of the pressure tube; a sealing and guiding device at a first end of the pressure tube; a guide tube arranged in the pressure tube; a piston guided in the guide tube that divides the pressure tube into a first work chamber and a second work chamber; a piston rod fastened by one end to the piston that extends through the second work chamber and is guided outward so as to be sealed by the sealing and guiding device at the first end of the pressure tube and is arranged with its other end at the base part of the vertical tube, wherein the second end of the pressure tube is remote from the piston rod; a spring element remote from the piston rod, the spring element having a first end at the second end of the pressure tube and a second end at the first end of the telescope tube, the spring element being configured to provide a force against the second end of the pressure tube and against the first end of the telescope tube to preload the pressure tube toward the second end of the telescope tube; and a valve in a flow connection between the first work chamber and the second work chamber, wherein the valve is configured to open and close the flow connection when actuated by an actuating device, wherein the pressure tube is arranged to be movable along a center longitudinal axis relative to the telescope tube.