Abstract: A tool handling system including an overhead counter-balance and a control bar. The counter-balance uses a series of complementary springs to provide a counter-gravitational force to a suspended tool. When the user wishes to lift the tool from its equilibrium position, the user is assisted by the counter-gravitational force of the springs such that the tool may be lifted with only a small fraction of the force necessary to lift the tool unaided. The control bar will allow users to keep any cable away from a riser or other structure on which the tool is being used.

Abstract: A wrench assembly including a drive head and an attached socket for engaging a bolt or nut. When the drive head turns, the socket and any engaged threaded member will also rotate. A hydraulic motor and cylinder are also included. The hydraulic motor and cylinder rotate the drive head and socket independently of each other. Typically, the hydraulic motor will rotate the drive head faster than the cylinder but at lower torques. Thus, the hydraulic motor will spin the threaded member down until it is snug, and then the hydraulic cylinder will tighten the threaded member to the desired torque. Alternatively, the hydraulic cylinder may break the threaded member out when it is tight. The hydraulic motor will then spin the loosened threaded member out. Finally, the wrench assembly includes a hydraulic fluid distribution system, including one or more valves that regulate hydraulic fluid flow through the wrench assembly.

Abstract: A gearless squeeze torque wrench for use with a power means is provided comprising a wrench case, a fixed gripping jaw rigidly attached to said wrench case, a floating gripping jaw freely movable inside of said wrench case and a power transfer means connecting said floating gripping jaw to said power means.