ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,595, issued on March 31, 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 with a cylinder tube, a first closure part arranged on a first cylinder tube end and a second closure part arranged on a second cylinder tube end, The cylinder tube and the closure parts define a cylinder interior. A piston unit defines at least one working space in the cylinder interior and passes through the first closure part and has an outer end portion. The working cylinder has a corrosio...