发明名称 |
Cutting tool for a pneumatic hammer |
摘要 |
A cutting tool for a pneumatic hammer operative at the bottom of a hole comprising a head for supporting cutting bits and a tail of reduced diameter extending from the head and provided with grooves forming alternating asymmetrical teeth engageable in symmetrical grooves provided in the interior of the front cylinder of the hammer. Each tooth of the cutting tool has a working flank in contact with the hammer during drilling which is of greater height than the other flank of the tooth so that each asymmetrical tooth can define in the symmetrical groove of the hammer an escape channel for compressed air from the hammer.
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申请公布号 |
US4241800(A) |
申请公布日期 |
1980.12.30 |
申请号 |
US19790022997 |
申请日期 |
1979.03.22 |
申请人 |
STENUICK FRERES S A |
发明人 |
STENUICK, PIERRE |
分类号 |
E21B4/14;E21B10/36;E21B10/38;E21B17/07;F16D3/06;(IPC1-7):E21B9/02 |
主分类号 |
E21B4/14 |
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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