发明名称 |
Apparatus and method for supporting a mine rib |
摘要 |
A mine rib support for bracing a vertical mine rib disposed between a mine floor and a mine roof. The support includes an elongated upright and continuous telescopically expandable support having a preset curvature. The member is longitudinally expanded for engaging the mine floor and the mine roof under compression with the curvature facing towards the mine rib. A support plate is laterally extended from the support member into compression engagement with the mine rib, thereby prestressing the support for support of the mine rib.
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申请公布号 |
US8371658(B2) |
申请公布日期 |
2013.02.12 |
申请号 |
US20100800190 |
申请日期 |
2010.05.10 |
申请人 |
HEINTZMANN CORPORATION;BREEDLOVE JOHN J.;DENVER ERIK;STILTNER HERBERT B. |
发明人 |
BREEDLOVE JOHN J.;DENVER ERIK;STILTNER HERBERT B. |
分类号 |
E21D15/14 |
主分类号 |
E21D15/14 |
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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