ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,774, issued on Oct. 21, was assigned to ABB Schweiz AG (Baden, Switzerland).
"Molding parameters for injection molded rotor production" was invented by Sheng Zhong (Hillsborough, N.C.), Darren D. Tremelling (Apex, N.C.) and Elio Alberto Perigo (Wendell, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for molding a magnetic material into a rotor stack, including providing a polymer melt including magnetic compound particles and a polymer binder, providing a rotor including a plurality of cavities, the rotor being arranged in a mold having a mold cavity surface, and providing a gap between the outer periphery of the rotor and the mold cav...