ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,707, issued on Oct. 21, was assigned to KOBE STEEL LTD. (Kobe, Japan).
"Pressing device" was invented by Tomomitsu Nakai (Takasago, Japan) and Akinori Maegawa (Takasago, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piston axial force information detection unit (53) detects piston axial force information pertaining to an axial force applied to a piston body (21). A friction information storage unit (62) stores friction information pertaining to a frictional force between a piston seal (23) and a pressure vessel (10) when the piston body (21) moves relative to the pressure vessel (10). A drive control unit (65) controls a drive device (40) o...