| 发明名称 |
Torque drive mechanism |
| 摘要 |
A new torque drive mechanism is disclosed between a reversible rotatable square bar means for rotating a washer while providing free longitudinal movement of the square rod in the washer, and for providing free passage of liquid therebetween the bar and the washer.
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| 申请公布号 |
US4306428(A) |
申请公布日期 |
1981.12.22 |
| 申请号 |
US19790063611 |
申请日期 |
1979.08.03 |
| 申请人 |
TEXACO INC. |
发明人 |
CALDERON, REYNALDO;TOWELL, BILLY H. |
| 分类号 |
E21B37/02;E21B37/08;E21B43/08;F16D1/108;F16D3/06;(IPC1-7):F16D1/00;B01D35/16 |
主分类号 |
E21B37/02 |
| 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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