US 12,289,073 B2
Battery-powered stand-alone motor unit
Jonathan E. Abbott, Wilmington, DE (US); James Wekwert, Whitefish Bay, WI (US); Logan M. Hietpas, Glendale, WI (US); John S. Scott, Brookfield, WI (US); and Troy C. Thorson, Cedarburg, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Jun. 3, 2024, as Appl. No. 18/731,781.
Application 18/731,781 is a continuation of application No. 16/551,197, filed on Aug. 26, 2019, granted, now 12,040,732.
Claims priority of provisional application 62/837,422, filed on Apr. 23, 2019.
Claims priority of provisional application 62/813,920, filed on Mar. 5, 2019.
Claims priority of provisional application 62/774,946, filed on Dec. 4, 2018.
Claims priority of provisional application 62/723,540, filed on Aug. 28, 2018.
Prior Publication US 2024/0356467 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02P 6/06 (2006.01); B08B 9/032 (2006.01); F16H 1/14 (2006.01); F16H 1/28 (2006.01); H01M 50/213 (2021.01); H02K 7/116 (2006.01); H02K 11/00 (2016.01); H02K 11/27 (2016.01); H02K 11/33 (2016.01); H02K 21/16 (2006.01); H02P 6/28 (2016.01); H02P 6/34 (2016.01); E01C 19/40 (2006.01); E02D 3/046 (2006.01); F16H 1/20 (2006.01)
CPC H02P 6/06 (2013.01) [B08B 9/0321 (2013.01); F16H 1/14 (2013.01); F16H 1/28 (2013.01); H01M 50/213 (2021.01); H02K 7/116 (2013.01); H02K 11/0094 (2013.01); H02K 11/27 (2016.01); H02K 11/33 (2016.01); H02K 21/16 (2013.01); H02P 6/28 (2016.02); H02P 6/34 (2016.02); E01C 19/402 (2013.01); E02D 3/046 (2013.01); F16H 1/20 (2013.01); H01M 2220/20 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A stand-alone motor unit for use with a piece of power equipment, the motor unit comprising:
a housing having a first side and a second side adjacent the first side;
a flange coupled to the first side of the housing;
a plurality of apertures through the flange defining a first bolt pattern that matches an identical, second bolt pattern defined in the piece of power equipment;
an electric motor arranged in the housing and including an output shaft;
a battery pack for providing power to the motor;
a power take-off shaft protruding from the second side of the housing; and
a gear train for transferring torque from the output shaft of the motor to the power take-off shaft, the gear train including
a first gear set with a first reduction stage, the first gear set receiving torque from the output shaft of the motor, and
a second gear set with a second reduction stage, the second gear set transferring torque from the first gear set to the power take-off shaft.