ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,163, issued on June 10, was assigned to THE JAPAN STEEL WORKS LTD. (Tokyo).

"Shut-off nozzle, injection device, and injection molding machine" was invented by Kiyotaka Nakayama (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shut-off nozzle includes a nozzle body portion, a needle valve, and a needle driving mechanism including a cylinder mechanism and a spring holder. The nozzle body portion includes a valve housing and the valve housing has a needle hole, into which a rear end portion of the needle valve is insertable, and a spring holder hole. The spring holder is inserted in the spring holder hole in a direction orthogonal to the axial d...