US 12,438,407 B2
Motors with pre-manufactured conductors or end rings and manufacturing methods thereof
Hengchun Mao, Allen, TX (US); Nianjiang Li, Bad Fussing (DE); and Xuezhong Jia, Allen, TX (US)
Assigned to Quantentech Limited, Grand Cayman (KY)
Filed by Quantentech Limited, Grand Cayman (KY)
Filed on Jun. 5, 2023, as Appl. No. 18/206,024.
Claims priority of provisional application 63/349,653, filed on Jun. 7, 2022.
Prior Publication US 2024/0405617 A1, Dec. 5, 2024
Int. Cl. H02K 1/18 (2006.01); H02K 1/02 (2006.01); H02K 15/021 (2025.01); H02K 15/085 (2006.01)
CPC H02K 1/18 (2013.01) [H02K 1/02 (2013.01); H02K 15/021 (2025.01); H02K 15/085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a stator or a rotor configured to be magnetically coupled through an air gap;
a plurality of slots distributed along a perimeter of the stator or rotor;
a plurality of metal bars, each placed into one of the plurality of slots; and
an end ring having a plurality of openings, wherein each opening is configured to receive an end of one of the metal bars, and wherein a lock feature is configured to improve a mechanical attachment between the end ring and the said metal bar, and wherein the lock feature is configured to maintain a separation between the metal bar and an inner surface of a corresponding opening in the end ring, thereby preventing undesirable interaction between the metal bar and the end ring.