US 12,191,710 B2
Electric motor for a power tool
Andrew T. Beyerl, Pewaukee, WI (US); Derek J. Schwab, Glendale, WI (US); Samantha L. Billetdeaux, New Berlin, WI (US); Kyle Greunke, Auborndale, WI (US); Hans T. Banholzer, Mequon, WI (US); and Carmen J. Castanos, Milwaukee, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Aug. 7, 2023, as Appl. No. 18/366,378.
Application 18/366,378 is a continuation of application No. 17/165,023, filed on Feb. 2, 2021, granted, now 11,728,700.
Claims priority of provisional application 62/970,272, filed on Feb. 5, 2020.
Prior Publication US 2023/0387734 A1, Nov. 30, 2023
Int. Cl. H02K 1/18 (2006.01); B25F 5/00 (2006.01); H02K 5/16 (2006.01); H02K 7/08 (2006.01); H02K 7/14 (2006.01); H02K 9/22 (2006.01); H02K 11/33 (2016.01); H02K 21/16 (2006.01); B23D 51/16 (2006.01)
CPC H02K 1/185 (2013.01) [B25F 5/008 (2013.01); H02K 5/161 (2013.01); H02K 7/083 (2013.01); H02K 7/145 (2013.01); H02K 9/227 (2021.01); H02K 11/33 (2016.01); H02K 21/16 (2013.01); B23D 51/16 (2013.01); H02K 2211/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric motor assembly comprising:
a circuit board;
a rotor assembly;
a stator assembly having a first end coupled to the circuit board and a second end opposite the first end, the stator assembly including
a stator body having a plurality of inwardly projecting teeth,
windings wrapped about the stator body to form a plurality of coils, and
a terminal coupled to an outer periphery of the stator body and extending longitudinally between the first end and the second end, the terminal being coupled to the circuit board at the first end and being coupled to the windings at the second end to electrically connect the windings to the circuit board; and
a heat sink positioned between the stator assembly and the circuit board, the heat sink including a plurality of axially extending cooling flanges;
wherein the terminal is molded to an attachment member, and the attachment member is molded to the outer periphery of the stator body.