| 发明名称 |
A doorframe of a flexible drift frame. |
| 摘要 |
A doorframe of a flexible drift frame is equipped with the roof-bar arch and side-wall arches, connected to each other with splicing shackles. It is characterised in that the roof-bar arch (1) has two bent curvatures (R, R1). One of them is identical with the cooperating bent curvature (R2) of the side-wall arch (2). |
| 申请公布号 |
PL189601(B1) |
申请公布日期 |
2005.08.31 |
| 申请号 |
PL19990330738 |
申请日期 |
1999.01.06 |
| 申请人 |
GLOWNY INSTYTUT GORNICTWA |
发明人 |
KOWALSKI EDWARD;KOZIEL KAROL;PEREK JAN;ROTKEGEL MAREK;RULKA KAZIMIERZ;SITEK JERZY;SKRZYNSKI KRZYSZTOF |
| 分类号 |
E21D11/14 |
主分类号 |
E21D11/14 |
| 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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