发明名称 |
DISPOSITIVO D'ANCORAGGIO AUTOTRAPANANTE,IN UN SOL PEZZO,PER MURATORE |
摘要 |
An expansion anchor device for use in masonry structure which is capable of drilling a hole in the structure and being set without the necessity of removal of the device from the hole. A drill tip portion with a conical upper region is interconnected to a generally cylindrical sleeve portion through a frangible wall. Helical flute grooves are formed on the outer surface of the sleeve to permit exhaust of drilled material from the hole. |
申请公布号 |
IT1076601(B) |
申请公布日期 |
1985.04.27 |
申请号 |
IT19770020539 |
申请日期 |
1977.02.22 |
申请人 |
ILLINOIS TOOL WORKS INC |
发明人 |
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分类号 |
E21D21/00;E21D20/00;F16B13/00;F16B13/13;(IPC1-7):F16B/ |
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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