| 发明名称 |
Adjustable-height chair column |
| 摘要 |
An adjustable-height chair column comprises an upright tube and a gas spring that is disposed coaxially in the upright tube. The gas spring comprises a valve for actuation of the gas spring. This valve is embodied for opening upon relief of the casing of the gas spring in relation to the upright tube.
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| 申请公布号 |
US7467774(B2) |
申请公布日期 |
2008.12.23 |
| 申请号 |
US20050038270 |
申请日期 |
2005.01.21 |
| 申请人 |
STABLE II S.A.R.L |
发明人 |
BOHM WALTER;KASTNER HELMUT;KNAUST HOLGER;WUNDERLING GERHARD |
| 分类号 |
A47C7/34;F16M13/00;A47C3/30;F16F9/00 |
主分类号 |
A47C7/34 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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