ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,374, issued on Nov. 4, was assigned to KOBELCO CONSTRUCTION MACHINERY Co. LTD. (Hiroshima, Japan).
"Rotary construction machine" was invented by Masahiro Kawamoto (Hiroshima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A confluence control part of a slewing-type construction machine controls a confluence switch valve such that the confluence switch valve is switched to a suspension state when a slewing and boom raising manipulation action is performed. A pump capacity control part of the slewing-type construction machine executes a capacity control when the slewing and boom raising manipulation action is performed, the capacity control inclu...