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专利名称：Core bit
发明人：SPANGENBERG, ROLF,CHAU-NGOC, DIEP申请号：EP01810090.9申请日：20010130公开号：EP1122013B1公开日：20030502
摘要：a required for the production of circular ausnehmungen or openings with abohrzylinder (1) fitted to the end of the bohrrichtungsseitigen elements of carving (3)projects. in the interior of the bohrzylinders (1) is a solvable kernh\ülse (2) isarranged. the elements of carving (3) extend radially at least on the axial projection ofthe wall thickness (a) of the kernh\ülse (2).the kernh\ülse (2) is formed by theinclusion of the masonry core and is extracted from a distance of the core requiredeasier. this will ease the required improved significantly.
申请人：HILTI AKTIENGESELLSCHAFT,HILTI AG,HILTI AKTIENGESELLSCHAFT
地址：LI
国籍：LI
代理机构：Wildi, Roland
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