发明名称 |
Fitting drain shaft cover in railway track bed, comprises placing shuttering ring on top of shaft cone and removing after bed support layer has been laid |
摘要 |
<p>A shuttering ring is placed on top of and centred on the shaft cone (10) or its equalizing ring (12), maintaining an opening for the shaft cover (14) in the support layer (22) for the bed. Once the support layer has been laid, the shuttering ring is removed.</p> |
申请公布号 |
CH696001(A5) |
申请公布日期 |
2006.11.15 |
申请号 |
CH20020001658 |
申请日期 |
2002.10.04 |
申请人 |
KAEHLER VOLKER |
发明人 |
KAEHLER VOLKER |
分类号 |
E01C19/50;E01C23/06;E02D29/14 |
主分类号 |
E01C19/50 |
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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