ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,461, issued on April 22, was assigned to J. C. Bamford Excavators Ltd. (Uttoxeter, Great Britain).
"Hydraulic system" was invented by James Hewitt (Uttoxeter, Great Britain), Paul Brenner (Uttoxeter, Great Britain) and Ravi Shankar (Uttoxeter, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic system for a working vehicle, the hydraulic system includes a hydraulically actuated device; a hydraulic pump assembly for supplying a variable output of hydraulic fluid to the hydraulically actuated device; and a proportional control valve, wherein the hydraulic system is arranged such that hydraulic fluid exiting the hydraulically actuat...