发明名称 |
Drop protection for waste water well |
摘要 |
The frame (1) has fixture components in the form of self-boring screws (10) which are screwed to engage with the well pipe inside. The drop protection can be fitted at a selectable height in the pipe. In an alternative version, the frame is divided and made to locate against the well pipe interior by expansion. Also it is possible for the frame and the grid insert to be integrated in a single piece. |
申请公布号 |
SE502624(C2) |
申请公布日期 |
1995.11.27 |
申请号 |
SE19930002312 |
申请日期 |
1993.07.05 |
申请人 |
VARNAESFOERETAGEN AB TIERPS JAERNBRUK |
发明人 |
CARSTEN *VARNAES;TOMAS *KARLSSON;OLA *ERIKSSON |
分类号 |
E03F5/02;(IPC1-7):E03F5/02 |
主分类号 |
E03F5/02 |
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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