| 发明名称 |
DIREKTE AANDRIJVING VOOR DE BEITEL VAN DIEPBOORWERKTUIGEN. |
| 摘要 |
In a Moineau type fluid motor one of the relatively rotatable elements is made of a deformable material, and axial movement of tapered surfaces within the element, caused by variation in the fluid pressure, causes adjustment of the sealing force in the motor in accordance with the fluid pressure level. |
| 申请公布号 |
NL8101224(A) |
申请公布日期 |
1981.12.16 |
| 申请号 |
NL19810001224 |
申请日期 |
1981.03.13 |
| 申请人 |
CHRISTENSEN, INC. TE SALT LAKE CITY, UTAH, VER. ST. V. AM. |
发明人 |
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| 分类号 |
E21B4/02;F03C2/08;F04C2/08;F04C2/107;(IPC1-7):21B4/02;03C2/08 |
主分类号 |
E21B4/02 |
| 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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