ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,184, issued on July 21, was assigned to Bumach Engineering International B.V. (TA Emmen, Netherlands).
"Working cylinder" was invented by Josef Bueter (Haren/Altenberge, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A working cylinder has a cylinder tube, a closure part and a further closure part disposed at cylinder tube ends. The closure part has a shaft portion and the cylinder tube has a cylinder tube end portion. The shaft portion and the cylinder tube end portion define a coupling portion where the shaft portion is axially inserted into the cylinder tube at the cylinder tube end portion. The shaft portion has a taper and is oversized,...