发明名称 |
Pneumatic drill |
摘要 |
A drill has a tubular outer housing and a tubular inner housing. The inner housing is movable between extended and retracted positions. A pneumatic motor with a chuck mounts to the inner housing. Air pressure is delivered to annular pistons to cause the inner housing to extend and retract. Also, an annular hydraulic chamber with a variable orifice bypass controls the rate of feed. A processor records the total number of holes being drilled as well as recording the time duration for each hole.
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申请公布号 |
US2008075544(A1) |
申请公布日期 |
2008.03.27 |
申请号 |
US20070986276 |
申请日期 |
2007.11.20 |
申请人 |
LOCKHEED MARTIN CORPORATION |
发明人 |
KRAUSE GUS E.;MAURER WILLIAM B.;BORN GLENN G. |
分类号 |
B23B35/00;B23B45/00;B23B45/04;B23Q5/027 |
主分类号 |
B23B35/00 |
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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