发明名称 |
Prefabricated concrete manhole element with a plastic liner |
摘要 |
The ready-made concrete shaft has a double-walled sealed pipe (4) in at least one wall opening. The pipe has a concrete outer and a plastics inner liner, the end of which is held inside the shaft opening. The inner liner is exposed over a sealing section and the concrete outer pipe projects into the shaft wall opening by a shorter distance than the exposed section. This opening has a plastics sleeve which converges from the outside to the shaft inside in at least three steps, forming a compatible socket with a shoulder for the pipe end. At least one sealing ring fits between the sleeve and the pipe. The shaft has a plastics inner liner (2). |
申请公布号 |
EP0821111(A3) |
申请公布日期 |
1998.07.08 |
申请号 |
EP19970112581 |
申请日期 |
1997.07.23 |
申请人 |
KUNSTSTOFFROEHREN SENDENHORST GMBH |
发明人 |
FUNKE, GUENTER;FUNKE, NORBERT |
分类号 |
E02D29/12;E03F3/04;E03F5/02;(IPC1-7):E03F5/02 |
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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