| 摘要 |
PROBLEM TO BE SOLVED: To provide a core draw-out tool capable of simply removing a core remaining in the state bonded to concrete when concrete is drilled by a core drill. SOLUTION: A holding cylindrical body 12 having a bottomed shape is provided to the leading end of a tool body 10. The holding cylindrical body 12 is constituted so that the thickness thereof is made less than the gap between the core and concrete generated by the drilling operation of the core drill and a taper ridge edge 13 is formed to the inner periphery of the opening part thereof. The holding cylindrical body 12 of the tool body 10 is inserted in the outer peripheral gap 102 between the core 101 and concrete 100 generated by the drilling operation of the core drill. The head part of the tool body 10 is struck by a hammer or the like and striking force is transmitted to the root part of the core and the root part is broken to draw out the core from concrete. COPYRIGHT: (C)2003,JPO
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