发明名称 |
Annular drill bit with a replaceable cutting section |
摘要 |
<p>The bit (1) has a cutting portion provided with multiple cutting segments (6) and a plug-in connecting element i.e. socket, where the bit is rotatable about a drilling axis (9). A drill shank portion (3) is provided with another plug-in connecting element i.e. plug, that forms a plug-in connection with the former connecting element. The connecting elements are connected by a pin connection that is designed as a releasable or non-releasable connection and comprises a receiving bore and a pin element. A recess is formed in the connecting elements and filled with corrosion inhibiter. An independent claim is also included for a set for assembling a drill bit.</p> |
申请公布号 |
EP2745966(A1) |
申请公布日期 |
2014.06.25 |
申请号 |
EP20130166991 |
申请日期 |
2013.05.08 |
申请人 |
HILTI AKTIENGESELLSCHAFT |
发明人 |
HOOP, MATTHÄUS;WEBER, CHRISTOPH;BRITT, THOMAS;AMMAN, CHRISTOPH |
分类号 |
B23B31/113;B23B51/04;E21B17/046 |
主分类号 |
B23B31/113 |
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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