| 发明名称 |
Locked manhole cover |
| 摘要 |
<p>The cover (1) of this manhole is mounted so as to tilt on the frame (2) by virtue of a hinge device (8-19). There are provided, at a place diametrically opposite the hinge device, locking means (10C-16C) which are adapted to give way under the action of a tilting force exerted on the cover. <IMAGE></p> |
| 申请公布号 |
GR3020366(T3) |
申请公布日期 |
1996.09.30 |
| 申请号 |
GR19960401735T |
申请日期 |
1996.06.27 |
| 申请人 |
PONT-A-MOUSSON S.A. |
发明人 |
BERTHON, FRANCIS;GUILLAUME, BERTRAND;HAUER, JEAN-CLAUDE;VAUTHIER, PATRICE |
| 分类号 |
E02D29/12;E02D29/14;E05C19/02;E05C19/06;(IPC1-7):E02D29/14 |
主分类号 |
E02D29/12 |
| 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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