US 12,407,210 B2
High heat transfer cryogenic bearing
Ernst Wolfgang Stautner, Niskayuna, NY (US); and Constantinos Minas, Slingerlands, NY (US)
Assigned to General Electric Company, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Mar. 21, 2023, as Appl. No. 18/187,366.
Prior Publication US 2024/0322638 A1, Sep. 26, 2024
Int. Cl. H02K 5/173 (2006.01); F16C 32/04 (2006.01); H02K 9/20 (2006.01); H02K 9/22 (2006.01); H02K 55/04 (2006.01)
CPC H02K 5/1737 (2013.01) [F16C 32/0438 (2013.01); H02K 9/20 (2013.01); H02K 9/225 (2021.01); H02K 9/227 (2021.01); H02K 55/04 (2013.01); F16C 2380/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A superconducting motor comprising:
a rotor including a superconducting winding formed from a superconducting material;
a stator including a heat sink positioned within the stator to absorb heat produced by the superconducting motor; and
a bearing including an inner race, an outer race, and a rolling element, the bearing rotatably supporting the rotor relative to the stator, the bearing thermally connected to each of the rotor and the heat sink to transfer heat from the rotor to the heat sink located within the stator, the rolling element being formed from a material having, at 25 K, a thermal conductivity of 20 W/mK or more and an ultimate tensile strength of 650 MPa or more.