Object support column used for a chair comprises dampens a piston movement using a moving damping unit

摘要

Object support column comprises dampens a piston movement using a moving damping unit. Preferred Features: The moving damping unit is a friction body arranged on a piston which is positioned on the inner wall of a cylinder (6). The friction body is a friction ring inserted into an annular groove formed on the radial peripheral casing surface of the piston. The moving damping unit is a flow resistor with a throttle.