Patent ID: 7559380

Claim:
A guiding system for a top drive unit for aligning a power swivel and dissipating torque created by the power swivel, wherein the power swivel rides on a support guide on a derrick, wherein the guiding system comprises: a first guide frame and a second guide frame, wherein the first guide frame and second guide frame are located on opposite sides of the power swivel; wherein the first guide frame comprises a first wheel and a second wheel, wherein the second guide frame comprises a third wheel and a fourth wheel, wherein each wheel is adapted to dissipate torque created by the power swivel and align the power swivel to a support guide, wherein each wheel is selected from the group consisting of a hard segmented rubber wheel, a non-segmented rubber wheel, a rubber composite wheel, a synthetic rubber wheel, and combinations thereof; wherein the first wheel and the second wheel are connected by a first fixed length axel, and wherein the third wheel and the fourth wheel are connected by a second fixed length axel, which position the wheels in relation to the support guide; a first housing enclosing the first fixed length axel, the first wheel, and the second wheel; and a second housing enclosing the second fixed length axel, the third wheel, and the fourth wheel.