ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,850, issued on April 22, was assigned to ROLLS-ROYCE plc (London).
"Metal coil fabrication" was invented by Alexis Lambourne (Belper, Great Britain), Iain Todd (Sheffield, Great Britain) and Geraint W Jewell (Sheffield, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A 3D printed metal coil for an electrical machine. The 3D printed coil has a plurality of turns and is configured to fit within a slot in an electrical machine. A cross-sectional shape of successive turns of the plurality of turns varies such that a portion of each turn forms a part of an external surface of the metal coil, the external surface forming an interface with a si...