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.
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
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