| 发明名称 |
Device for gripping and suspending drill pipe stand |
| 摘要 |
According to the invention, the device comprises clamping elements hinged in a housing provided with a cut-out and a control system formed by a group of levers which are connected with a hoisting line. Besides, one of the levers is hinged to the housing and the other levers, to the clamping elements.
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| 申请公布号 |
US4893860(A) |
申请公布日期 |
1990.01.16 |
| 申请号 |
US19880213625 |
申请日期 |
1988.06.30 |
| 申请人 |
AZERBAIDJANSKY NAUCHNO-ISSLEDOVATELSKY I PROEKTNO-KONSTRUKTORSKY INSTITUT NEFTYANOGO MASHINO-STROENIYA |
发明人 |
KURBANOV, NARIMAN G. K. O.;ALI-ZADE, VAGIF A.;KARTASHEV, VLADIMIR A.;ZEINALOV, ELDAR T. O. |
| 分类号 |
E21B19/06 |
主分类号 |
E21B19/06 |
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