发明名称 |
HYDRAULICALLY OPERATED VALVE WRENCH |
摘要 |
<p>HYDRAULICALLY OPERATED VALVE WRENCH A hydraulically operated wrench comprised of a body saddle, bonnet clamp and hydraulic system providing controlled high torque turning force for in-line assembly and disassembly of threadedly connected valve housing components such as the body and bonnet. With the saddle and clamp separately secured to the valve body and bonnet, respectively, a pump actuated piston/cylinder is mounted on the saddle with its piston end secured to the clamp. The axis of the piston/cylinder is aligned with a force vector normal to the bonnet radius such that when the piston is extended outward by operation of a jack pump in response to hydraulic pressures imposed against the piston/cylinder it imposes a high force turning moment against the bonnet relative to the body.</p> |
申请公布号 |
CA1086109(A) |
申请公布日期 |
1980.09.23 |
申请号 |
CA19780313286 |
申请日期 |
1978.10.12 |
申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
ZOCHERT, MARVIN L.;DECUIR, JOHN R. |
分类号 |
B25B13/00;B25B13/48;B25B21/00;(IPC1-7):25B21/00 |
主分类号 |
B25B13/00 |
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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