ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,134, issued on Jan. 20, was assigned to KRANENDONK BEHEERSMAATSCHAPPIJ B.V. (Tiel, Netherlands).
"Method for coaxially welding two tubes together" was invented by Marinus Hermanus Maria Boksebeld (Tiel, Netherlands), Johannes Petrus Hubertus Justin Geraerds (Tiel, Netherlands), Chris Johannes Astrid Maria Warmenhoven (Tiel, Netherlands) and Bart Van Dam (Tiel, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a method for coaxially welding together two tubes. Axial ends of the tube walls of the respective tubes are machined in such a way that they have a stepped shape over at least a first part of the tube wall thickn...