发明名称 |
Percussion borer for forming bores in stone material |
摘要 |
A percussion bores for forming borer in a stone material and including a chisel stem (2) having a prismatic cross-section and provided with a chiseling head (3) and at least one radial opening (4), a twist drill (6) extending through the cylindrical through-bore (3) of the chisel stem and projecting beyond the chiseling head (7), a drilling head (10) with cutting elements (9) provided at the projecting end of the twist drill and a shank (12) provided at another end of the twist drill, and a stop (13) provided between the shank (12) and the chisel stem (2), with a drill stem being offset radially inwardly with respect to an outer diameter of the shank in the region of the stop.
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申请公布号 |
US2002153173(A1) |
申请公布日期 |
2002.10.24 |
申请号 |
US20020120658 |
申请日期 |
2002.04.11 |
申请人 |
WISSER ERICH;JOHN MARCEL;SANDER BERNHARD;SCHAD HANSPETER;SURBERG CORD-HENRIK;COFFIN CHARLES;VEDDER JOACHIM;LINS REINHARD |
发明人 |
WISSER ERICH;JOHN MARCEL;SANDER BERNHARD;SCHAD HANSPETER;SURBERG CORD-HENRIK;COFFIN CHARLES;VEDDER JOACHIM;LINS REINHARD |
分类号 |
B28D1/26;B23B51/00;B28D1/14;E21B10/44;E21D21/00;(IPC1-7):E21B10/40 |
主分类号 |
B28D1/26 |
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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