ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,632, issued on Aug. 19, was assigned to MAXON INTERNATIONAL AG (Sachseln, Switzerland).
"Operationally reliable brushless DC electric motor" was invented by Peter Ullrich Arend (Boswil, Switzerland) and Alexis Boletis (Lucerne, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a brushless DC electric motor, such as for an actuator unit of an implant, as for a cardiac assist system, with a stator with a hollow-cylindrical iron-free winding and a rotor which can rotate relative to the stator. A shaft has a number p of pairs of permanent-magnetic poles, and the winding has a number n of three-phase systems sep...