Patent ID: 6374706
Filing Date: 2002-04-23
Classification: E21B

Abstract:
A sucker rod tool adapted to torque an upper sucker rod relative to a lower sucker rod, comprising:a tong housing; an upper jaw rotatably coupled to said tong housing and being adapted to engage said upper sucker rod; a backup wrench coupled to said tong housing and being adapted to engage said lower sucker rod, said backup wrench being moveable relative to said tong housing between a torqued position and a relaxed position; a spring coupled to said tong housing and being adapted to exert a force that urges said backup wrench toward said relaxed position; and a switch system coupled to said tong housing and being responsive to movement of said backup wrench such that said switch system changes from a normal state to an actuated state upon said backup wrench moving from said relaxed position to said torqued position regardless of any hydraulic pressure of any hydraulic fluid that may happen to circulate through said sucker rod tool.