ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,756, issued on Sept. 30, was assigned to Hinetics LLC (Champaign, Ill.).
"Slotless electric motor having improved cooling" was invented by Noah Salk (Chicago), Thanatheepan Balachandran (Urbana, Ill.), Kiruba Haran (Champaign, Ill.), Dongsu Lee (Savoy, Ill.) and Paige Powell (Barrington, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A slotless electric motor provides a ferromagnetic yoke that includes laminations of a ferromagnetic material interspersed with a high thermal conductivity nonferromagnetic material to greatly reduce the thermal resistance of this yoke. A thermally conductive coil form provides heat conduction paths on three sides...