发明名称 |
Safety tool for handling of unitized jaw assembly in power sucker rod tongs |
摘要 |
A hand tool for safely removing and installing the unitized jaw assembly in power sucker rod tongs has a tool head equipped with spring loaded paws for gripping the jaw assembly. A tool handle allows rotation of the tool head with the jaw assembly to protect the tool operator against injury when installing or removing the jaw assembly from the power tongs.
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申请公布号 |
US5163212(A) |
申请公布日期 |
1992.11.17 |
申请号 |
US19910766574 |
申请日期 |
1991.09.27 |
申请人 |
OIL COUNTRY MANUFACTURING, INC. |
发明人 |
NELSON, ROBERT M. |
分类号 |
B25B9/00;B25B27/14;E21B19/16 |
主分类号 |
B25B9/00 |
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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