US Patent 10131380 Vertically articulating vehicle

An articulated vehicle including two wheeled sections hinged together in the middle of the vehicle by a universal movement joint enabling relative pivoting about three axes extending at right angles to each other through the center of the vehicle. A hydraulically operated strut and a hydraulically operated cylinder/jack extend between the two vehicle sections. The strut is universally pivoted at its ends to the two vehicle sections to control the relative pivoting of the two vehicle sections while, the cylinder is trunnion mounted to one end and bolted to the other to permit vertical articulation of the vehicle.