US 12,395,035 B1
Sealed motor
Kamran Ramezani, Sanford, FL (US)
Assigned to Milwaukee Electronics Corporation, Milwaukee, WI (US)
Filed by Milwaukee Electronics Corporation, Milwaukee, WI (US)
Filed on Mar. 2, 2023, as Appl. No. 18/116,462.
Claims priority of provisional application 63/341,043, filed on May 12, 2022.
Int. Cl. H02K 5/10 (2006.01); H02K 5/15 (2006.01); H02K 7/08 (2006.01)
CPC H02K 5/10 (2013.01) [H02K 5/15 (2013.01); H02K 7/085 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A motor comprising:
a. a motor housing;
b. one or more motor stators including a plurality of motor windings;
c. a shaft connected to the one or more motor stators, the shaft extending along a longitudinal axis of the motor; and
d. a motor rotor including:
i. a rotor;
ii. one or more magnets located within the rotor or motor windings located within the rotor;
e. one or more bearings located between the motor housing and the shaft so that the motor housing and the shaft are movable relative to each other, wherein a first one of the one or more bearings comprises:
i. an interior side that faces an interior of the motor;
ii. an exterior side that faces a location outside of the motor, wherein all or a portion of the exterior side is free of being covered by the motor housing;
iii. a hydrophobic material filling a gap created by a region located exteriorly of the exterior side of the first bearing that is free of being covered by the motor housing, wherein the hydrophobic material contacts the exterior side of the first bearing; and
f. a shaft seal located interiorly of the interior side of the first bearing.