US 12,068,660 B2
Electric motor
Steven R. Huard, New Ulm, MN (US); Travis J. Anderson, Winthrop, MN (US); Kevin B. Henke, Hutchinson, MN (US); Joseph L. Dobmeier, Mankato, MN (US); John P. Blomberg, New Ulm, MN (US); and Justin O. Byers, Madelia, MN (US)
Assigned to Parker-Hannifin Corporation, Cleveland, OH (US)
Appl. No. 17/435,553
Filed by Parker-Hannifin Corporation, Cleveland, OH (US)
PCT Filed Apr. 17, 2020, PCT No. PCT/US2020/028629
§ 371(c)(1), (2) Date Sep. 1, 2021,
PCT Pub. No. WO2020/214884, PCT Pub. Date Oct. 22, 2020.
Claims priority of provisional application 62/835,686, filed on Apr. 18, 2019.
Claims priority of provisional application 62/935,879, filed on Nov. 15, 2019.
Prior Publication US 2022/0069668 A1, Mar. 3, 2022
Int. Cl. H02K 7/10 (2006.01); H02K 1/02 (2006.01); H02K 1/16 (2006.01); H02K 5/16 (2006.01); H02K 7/102 (2006.01); H02K 21/14 (2006.01); H02K 1/27 (2022.01); H02P 3/04 (2006.01)
CPC H02K 7/1023 (2013.01) [H02K 1/02 (2013.01); H02K 1/16 (2013.01); H02K 5/16 (2013.01); H02K 21/14 (2013.01); H02K 1/27 (2013.01); H02P 3/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electric motor comprising:
a housing;
a stator fixed relative to the housing;
a rotor having a hub portion, a cylindrical portion made of a magnetic material, and a disk portion made of a non-magnetic material, wherein the hub portion has a first end, a second end, and a through hole therethrough;
a brake assembly fixed relative to the housing and configured to selectively prevent rotation of the rotor, wherein the brake assembly comprises (i) a base that is fixedly attached to the housing, (ii) a brake housing having a first cylindrical portion and a second cylindrical portion, the second cylindrical portion of the brake housing being concentrically positioned within the first cylindrical portion of the brake housing, wherein the first cylindrical portion and the second cylindrical portion extend axially from the base, and (iii) a brake plate covering at least a portion of an axial end of the first cylindrical portion of the brake housing and an axial end of the second cylindrical portion of the brake housing;
a first bearing mounted between the first end of the hub portion of the rotor and the disk portion of the rotor; and
a second bearing mounted between the second end of the hub portion of the rotor and the disk portion of the rotor.