US 12,113,412 B2
Gears for electric motor
Stefano Foresti, Denair, CA (US); Christopher Chalabi, Turlock, CA (US); Johnathan Deas, Santa Clarita, CA (US); Sonia Desaidamle, Merced, CA (US); Samuel Gottesfeld, Oxnard, CA (US); Blair Macleod, Agoura Hills, CA (US); Christopher Reps, Arroyo Grande, CA (US); and Michiro Robinson, Sunland, CA (US)
Assigned to The Regents of the University of California, Oakland, CA (US)
Filed by The Regents of the University of California, Oakland, CA (US)
Filed on May 17, 2021, as Appl. No. 17/322,685.
Application 17/322,685 is a continuation of application No. PCT/US2019/061881, filed on Nov. 15, 2019.
Claims priority of provisional application 62/768,496, filed on Nov. 16, 2018.
Prior Publication US 2021/0273541 A1, Sep. 2, 2021
Int. Cl. H02K 21/16 (2006.01); H02K 1/28 (2006.01); H02K 7/116 (2006.01); H02K 16/00 (2006.01)
CPC H02K 21/16 (2013.01) [H02K 1/28 (2013.01); H02K 7/116 (2013.01); H02K 16/00 (2013.01); H02K 2213/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric motor comprising
a motor shaft;
a rotor assembly comprising:
a plurality of concentric rotors operably attached to the motor shaft, each concentric rotor having a plurality of permanent magnets;
at least some of the plurality of permanent magnets having different magnetic properties;
a stator assembly comprising:
a plurality of concentric stators, each concentric stator having a plurality of pairs of stator coils;
at least some of the plurality of stator coils having different coil properties;
wherein a radius of a first concentric stator is different than a radius of a second concentric stator; and
a controller allocating electrical current to the plurality of pairs of stator coils, thereby causing rotation of the motor shaft.