ALEXANDRIA, Va., March 24 -- United States Patent no. 12,585,295, issued on March 24, was assigned to NISHINA INDUSTRIAL Co. LTD. (Nagano, Japan).
"Solenoid proportional relief valve" was invented by Gaku Mabuchi (Nagano, Japan) and Shogo Koyama (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A solenoid proportional relief valve includes: a joint in which the flow path is disposed; a coil wound to be energized; a needle supported movably along an axial direction of the coil; and a stator generating an attraction force on the needle by excitation of the coil, the needle being formed into a bottomed cylinder having a wall portion and a bottom portion and configured as a biasing member accommodati...