US 11,722,025 B2
Rotor for electric motors
Fredrik Boxberg, Espoo (FI); Charles J. Peterson, La Crosse, WI (US); Yubo Nian, La Crosse, WI (US); Petri J. Mäki-Ontto, Espoo (FI); Lauri Juhani Salmia, Espoo (FI); Russell T. Abbott, Caledonia, MN (US); Tomas Fajt, La Crosse, WI (US); and Seth M. McGill, Brookings, SD (US)
Assigned to TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed by TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed on Dec. 31, 2020, as Appl. No. 17/139,253.
Prior Publication US 2022/0209598 A1, Jun. 30, 2022
Int. Cl. H02K 1/27 (2022.01); H02K 15/03 (2006.01); H02K 11/01 (2016.01); H02K 1/28 (2006.01); H02K 1/278 (2022.01)
CPC H02K 1/278 (2013.01) [H02K 11/012 (2020.08); H02K 15/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A rotor for an electric motor, comprising:
a first rotor endpiece;
a second rotor endpiece;
a permanent magnet, secured between the first rotor endpiece and the second rotor endpiece; and
a sleeve configured to surround a portion of the first rotor endpiece, a portion of the second rotor endpiece, and the permanent magnet;
wherein:
the first rotor endpiece includes a plurality of first retention projections,
the second rotor endpiece includes a plurality of second retention projections, and
the sleeve includes a plurality of first openings each configured to receive at least one of the first retention projections and a plurality of second openings each configured to receive at least one of the second retention projections.