发明授权
- 专利标题: Rock bolts
- 专利标题(中): 岩石螺栓
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申请号: US3695045D申请日: 1970-02-03
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公开(公告)号: US3695045A公开(公告)日: 1972-10-03
- 发明人: WILLIAMS CHESTER I
- 申请人: WILLIAMS CHESTER I
- 专利权人: Chester I Williams
- 当前专利权人: Chester I Williams
- 优先权: US834570 1970-02-03
- 主分类号: E21D20/00
- IPC分类号: E21D20/00 ; E21D21/00 ; F16B13/14 ; E21D20/02
摘要:
A method of reinforcing a rock formation with rock bolts establishing a lock-in pre-stress condition inhibiting the initiation of movement of the formation, and structural features of a rock bolt assembly capable of use in the practice of the method.
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