Patent ID: 8347972

Claim:
An improved multi-bolt or nut torque wrench system for installing or removing a plurality of threaded bolt or nut members on a riser, the system comprising: (a) a plurality of torque stations, each torque station including: (i) a wrench body that includes first and second end portions, and a drive head on the first end portion of the body; (ii) a torque wrench operatively connected to the drive head for rotating a threaded bolt or nut member at a rotational speed under a torque condition; (iii) a horizontal positioning mechanism for moving the drive head in a generally horizontal direction; (iv) a vertical positioning mechanism for moving the drive head in a generally vertical direction, wherein the vertical positioning mechanism can vertically position the drive head independent from operation of the torque wrench; (b) a controller that controls the plurality of torque stations, including the torque wrenches, the horizontal positioning mechanism, and the vertical positioning mechanisms such that the plurality of drive heads simultaneously engage their respective bolt or nut members.