ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,094, issued on May 27, was assigned to Bumach Engineering International B.V. (Emmen, Netherlands).
"Piston unit of a working cylinder" was invented by Josef Bueter (Haren/Altenberge, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piston unit of a working cylinder includes a piston rod that has an outer thread on a piston-side coupling portion. A piston has an axial bore which has an inner thread and in which the piston rod is received. The outer thread and the inner thread define a common thread portion. The outer thread and the inner thread have a complementary conicity and a complementary thread geometry. The conicity has a conicity angl...