| 发明名称 |
Invert |
| 摘要 |
In order to provide inverts which permit improved longitudinal stability of the invert run embedded in the in-situ concrete and, moreover, further have a high degree of leak-tightness, it is provided that, in the region of each of their two longitudinal end surfaces (4), they are configured with a depression (5) running in the longitudinal direction of the invert (Figure 1). <IMAGE>
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| 申请公布号 |
DE3833943(A1) |
申请公布日期 |
1989.05.18 |
| 申请号 |
DE19883833943 |
申请日期 |
1988.10.05 |
| 申请人 |
WIENERBERGER BAUSTOFFINDUSTRIE AG, WIEN, AT |
发明人 |
SCHMITZER, RUDOLF, ING., WIEN, AT |
| 分类号 |
E03F3/04;E21D11/08;E21F16/00 |
主分类号 |
E03F3/04 |
| 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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