ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,073, issued on Sept. 30, was assigned to Milwaukee Cylinder Enterprises LLC (Cudahy, Wis.).
"Cylinder with automatic hydraulic fluid circulation" was invented by Douglas Lacina (Franklin, Wis.), Joseph Logue (Milwaukee), Fred Borak (Greenfield, Wis.) and Pete Frymark (Cudahy, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The claimed invention is an end-of-stroke recirculation system for use with a hydraulic cylinder. Generally speaking, the fluid in a hydraulic cylinder remains trapped on one side of the piston and is unable to recirculate. The claimed invention provides a bypass that allows for hydraulic fluid to circulate through a cylinder...