ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,221,178, issued on Feb. 11, was assigned to Caterpillar SARL (Geneva).
"Articulated truck steering" was invented by Matthew Lee Dixon (Peterborough, Great Britain), Steven Edward Johnson (Metamora, Ill.) and Adam J. Adeeb (Naperville, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A steering system for an articulated truck. The articulated truck is formed of a tractor and a trailer and an articulation joint. The steering system includes a hydraulic cylinder, with a cylinder barrel and a piston. The steering system provides for changes in angle between the tractor and the trailer. The hydraulic cylinder includes a snubbing tube projecting into the c...