发明名称 |
A yielding spiral bolt appendage for a rock bolt |
摘要 |
A yielding spiral bolt appendage for attachment to a rock bolt has a cylindrical shank portion for attachment to the insertion end of the rock and a helical flute portion having a tip for rupturing a resin cartridge and achieving mixing when rotated. The shank has a first tapered portion and a second tapered portion for resisting movement of the appendage once the resin has set. |
申请公布号 |
AU2010348888(B2) |
申请公布日期 |
2014.01.09 |
申请号 |
AU20100348888 |
申请日期 |
2010.03.19 |
申请人 |
DYWIDAG-SYSTEMS INTERNATIONAL CANADA LTD. |
发明人 |
GHARBANI, AMIR;WALKER, ROLAND |
分类号 |
E21D21/00;E21D20/02 |
主分类号 |
E21D21/00 |
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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