发明名称 |
Impact borer for embedding lines, anchoring cables, and sinking wells |
摘要 |
An impact borer having a shell and an air drive within the shell. The air drive includes a ram for reciprocation within the shell and a manifold joined to the shell. The manifold defining an inlet passage delivering air to the air drive and an outlet passage exhausting air from the air drive, and a duplicate passage interconnecting the inlet and outlet passages within the manifold.
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申请公布号 |
US5249634(A) |
申请公布日期 |
1993.10.05 |
申请号 |
US19920855788 |
申请日期 |
1992.03.23 |
申请人 |
INDUSTRIAL ENGINEERING, INC. |
发明人 |
BUETER, JOHN C.;FIELDS, RANDALL T.;CHANDLER, MARTIN D.;NEULS, FREDERICK W.;LAFFKAS, HARRY P. |
分类号 |
E21B4/14;E21B7/04;E21B7/26;(IPC1-7):E21B7/06 |
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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