| 发明名称 |
Device for supporting and prestressing rock bolts |
| 摘要 |
The device for supporting and prestressing rock bolts consists of at least one bolt plate (1) with a prominence in the form of a conical surface (2) with a bore whose wall (4) is tapered. The nut (5) fitting into this bore is likewise tapered in the area of the seating surface (7). <IMAGE>
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| 申请公布号 |
CH630701(A5) |
申请公布日期 |
1982.06.30 |
| 申请号 |
CH19780008347 |
申请日期 |
1978.08.04 |
| 申请人 |
GD-ANKER GEBIRGS-DUEBEL-ANKER GMBH & CO. KG |
发明人 |
RUDOLF GRUBER |
| 分类号 |
E21D20/00;E21D21/00;(IPC1-7):E21D21/00;E02D5/74 |
主分类号 |
E21D20/00 |
| 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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