ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,732,043, issued on Sept. 8, was assigned to BorgWarner Inc. (Auburn Hills, Mich.).
"Rotor for an external rotor motor" was invented by Silvio Koch (Kirchheimbolanden, Germany) and Thomas Ramb (Worms, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor for an external rotor motor is described. The rotor has a back iron ring made of ferromagnetic steel, permanent magnets which are fastened to an inner side of the back iron ring, and a carrier made of non-ferromagnetic material which has a hub for a shaft and is fastened to the back iron ring. According to this disclosure, the carrier has a slot into which the back iron ring is inserted."
The p...