发明名称 |
Jaw assembly for gripping pipes |
摘要 |
A jaw assembly for a power tong or back-up tong is provided with a jaw die plate and die seating surface that are shaped to permit radial insertion of the die plate onto its seating surface. Both vertical and horizontally aligned splines, or spline segments are present on the seating surface. Grooves between the protrusions on the mating surface of the die plate interfit between the splines and/or spline segments to stabilize the die plate and to absorb both rotational torque forces and vertical shearing forces without disengagement from its seating surface.
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申请公布号 |
US6637296(B1) |
申请公布日期 |
2003.10.28 |
申请号 |
US20020135384 |
申请日期 |
2002.05.01 |
申请人 |
DAGENAIS DAN;FRASER JONATHAN BRENT;SZALACSI LESLIE L.;BASLER HERMANN |
发明人 |
DAGENAIS DAN;FRASER JONATHAN BRENT;SZALACSI LESLIE L.;BASLER HERMANN |
分类号 |
E21B19/16;(IPC1-7):B25B13/50;B25B13/58 |
主分类号 |
E21B19/16 |
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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