发明名称 |
Bollard comprises hollow stand and upper section which can be raised or lowered back into the stand and comprises top containing reservoir for hydraulic fluid, drive unit and control unit, hydraulic cylinder connecting base to upper section |
摘要 |
The bollard for blocking thoroughfares comprises a hollow stand (20) and an upper section (30) which can be raised or lowered back into the stand using an electrically controlled hydraulic system. The upper section comprises a top (33) containing separate chambers (35, 36), a reservoir (45) for hydraulic fluid, a drive unit (44) and a control unit (43). A hydraulic cylinder (55) connects the base of the stand to the bottom of the upper section,
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申请公布号 |
DE19928036(A1) |
申请公布日期 |
2000.12.21 |
申请号 |
DE19991028036 |
申请日期 |
1999.06.18 |
申请人 |
ELKOSTA SECURITY SYSTEMS GMBH & CO. KG |
发明人 |
GRAEF, HANS ULRICH |
分类号 |
E01F13/04;(IPC1-7):E01F13/00 |
主分类号 |
E01F13/04 |
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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