ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,705, issued on Dec. 23, was assigned to MAGNA Powertrain GmbH & Co KG (Lannach, Austria).
"Device and method for continuously producing an at least partly hollow shaft having a varying inner and/or outer diameter" was invented by Ewald Dohr (St. Michael, Austria) and Helmut Haas (St. Peter a. Ottersbach, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device and method for continuously producing an at least partly hollow shaft having a varying inner diameter includes forging tools that are arranged centrally symmetrically about a forging axis and are driven radially, a clamping chuck for holding an at least partly hollow cylindrical blank, ...