| 发明名称 |
METHOD OF AUTOMATIC OPERATION OF A PERCUSSION APPARATUS |
| 摘要 |
Percussion apparatus, for example a pile driver, includes a closed circuit in which a hammer 9 is coupled to a drive drum 1 by both an operating line 3 and a return line 3a so that in use the drum is caused to stop substantially at the same time as the moment of hammer strike ends on an object 10. <IMAGE> |
| 申请公布号 |
ZA8104197(B) |
申请公布日期 |
1982.07.28 |
| 申请号 |
ZA19810004197 |
申请日期 |
1981.06.22 |
| 申请人 |
CIE INTERNATIONALE DES PIEUX ARMES FRANKIGNOUL |
发明人 |
SALAMONI J;MALLEMONT M;AOKI N |
| 分类号 |
B21J7/44;E02D7/08 |
主分类号 |
B21J7/44 |
| 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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