发明名称 |
PERCUSSION DEVICE WITH A CONTROL VALVE FOR TWO ALTERNATELY STRIKING PISTONS |
摘要 |
The invention relates to a percussion device comprising two percussion pisto ns alternately making a percussion motion and a control valve for controlling t he percussion pistons. The control valve (7) comprises a slide (8) affected by a force so that the slide is generally in a first position, but moves at the e nd of the percussion motion of the first percussion piston from the first position to a second position and correspondingly back to the first position at the end of the percussion motion of the second percussion piston (4).</SD OAB>
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申请公布号 |
CA2465400(A1) |
申请公布日期 |
2003.05.15 |
申请号 |
CA20022465400 |
申请日期 |
2002.11.07 |
申请人 |
SANDVIK TAMROCK OY |
发明人 |
RANTALA, ESA;HEINONEN, JARMO;KOSKIMAKI, ANTTI |
分类号 |
B25D9/18;(IPC1-7):B25D9/18 |
主分类号 |
B25D9/18 |
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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