US 12,012,965 B2
Pump having opposing magnets between a rotor and stator, and related assemblies, systems, and methods
Tom M. Simmons, Kamas, UT (US); Geoffrey White, Heber, UT (US); and Courtney Parsons, West Valley City, UT (US)
Assigned to White Knight Fluid Handling Inc., Kamas, UT (US)
Filed by White Knight Fluid Handling Inc., Kamas, UT (US)
Filed on Aug. 22, 2022, as Appl. No. 17/821,401.
Application 17/821,401 is a continuation of application No. 16/779,944, filed on Feb. 3, 2020, granted, now 11,421,694.
Claims priority of provisional application 62/800,264, filed on Feb. 1, 2019.
Prior Publication US 2022/0403847 A1, Dec. 22, 2022
Int. Cl. F04D 13/06 (2006.01); F04D 13/02 (2006.01); F04D 25/02 (2006.01); F04D 29/058 (2006.01); F16C 32/04 (2006.01); H02K 7/09 (2006.01)
CPC F04D 13/06 (2013.01) [F04D 13/024 (2013.01); F04D 13/026 (2013.01); F04D 13/027 (2013.01); F04D 13/0633 (2013.01); F04D 13/064 (2013.01); F04D 25/026 (2013.01); F04D 29/058 (2013.01); F16C 32/0461 (2013.01); F16C 32/0465 (2013.01); F16C 32/0468 (2013.01); F16C 32/0478 (2013.01); H02K 7/09 (2013.01); F16C 32/041 (2013.01); F16C 32/0412 (2013.01); F16C 32/0417 (2013.01); F16C 32/0421 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A magnetically levitated electric motor comprising:
a rotor comprising an armature and one or more permanent magnets on opposing axial sides of the armature;
a stator substantially coaxial with the rotor, the stator comprising a drive magnet axially aligned with the armature and one or more complementary permanent magnets positioned on opposing axial sides of the drive magnet; a permanent push/pull magnet positioned on an axial end of the rotor;
a locating electromagnet positioned on an axial end of the stator, configured to position of the rotor at a position set-point by interacting with the push/pull magnet, the locating electromagnet axially offset from the push/pull magnet;
a permanent lift magnet positioned on the axial end of the stator, the permanent lift magnet configured to support the axial end of the rotor; and
wherein at least one of the one or more complementary permanent magnets is located between the locating electromagnet and the drive magnet.