ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,528, issued on Dec. 9, was assigned to Caterpillar Inc. (Peoria, Ill.).
"Hydraulic systems for grading machines" was invented by Ernest E. Stoops (Mt. Zion, Ill.), Nathaniel K. Harshman (Sullivan, Ill.) and Jonathan M. Bloot (Tucson, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic system for operating a circle drive gear of a grading machine includes a pump configured to output pressurized fluid, a directional control valve fluidly coupled to the pump, a bidirectional hydraulic motor located downstream of the directional control valve and fluidly coupled to the directional control valve via hydraulic lines. The hydraulic motor has an...