A cross slope level/torsion control for mobile machines is disclosed. At least two crawler tracks or four wheels or rail bogies are provided for transporting and elevating the frame with at least one crawler track or two wheels or rail bogies on a reference side of the mobile machine and at least one...http://www.google.com/patents/US5941658?utm_source=gb-gplus-sharePatent US5941658 - Cross-slope level control for mobile machinery
