发明授权
- 专利标题： Mine stopping
- 专利标题（中）： 地雷停止
-
申请号： US09464808申请日： 1999-12-17
-
公开(公告)号： US06379084B1公开(公告)日： 2002-04-30
- 发明人: William R. Kennedy , John M. Kennedy
- 申请人： William R. Kennedy , John M. Kennedy
- 主分类号： E21F114
- IPC分类号： E21F114
摘要：
A stopping system for use in mines. The stopping system includes a king post truss for reinforcing the stopping panels against excessive deflection due to a pressure differential across the stopping panels. The truss has a variable length to accommodate convergence and divergence of the mine walls on which the truss is mounted.
信息查询
