| 摘要 |
The column (1) is fitted with a gas pressurized spring, a housing (6) filled with a pressurized medium, two chambers (11, 15) created by a piston (14), and a valve connecting the chambers (11, 15). The sealing element positioned between valve housing and sealing unit, also present in the standard version, is designed as a sealing lip moving against the valve head when a force acts on the housing (6). When the forces are released the sealing lip is lifted and the chambers (11, 15) inside connected. A gap can be provided serving as a throttle element, reducing the lifting speed when the seat is returned to its normal height automatically.
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