US 12,434,371 B2
Electronic clutch for power tools
Austin Gaspar, Maple Valley, WA (US); and Robert Keys, Pewaukee, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Mar. 20, 2023, as Appl. No. 18/186,421.
Claims priority of provisional application 63/384,891, filed on Nov. 23, 2022.
Claims priority of provisional application 63/322,949, filed on Mar. 23, 2022.
Prior Publication US 2023/0321810 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B25F 5/00 (2006.01); H02K 7/11 (2006.01); H02K 7/14 (2006.01); H02P 21/22 (2016.01); H02P 27/08 (2006.01)
CPC B25F 5/001 (2013.01) [H02K 7/11 (2013.01); H02K 7/145 (2013.01); H02P 21/22 (2016.02); H02P 27/085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool including an electronic clutch, the power tool comprising:
a motor;
a trigger; and
a controller connected to the trigger and the motor, the controller configured to:
provide, in response to actuation of the trigger, power to the motor,
determine a speed of the motor,
activate the electronic clutch, in response to determining that the speed of the motor has dropped by a speed drop threshold within a first period of time, to electronically brake the motor for a second period of time, and
provide, in response to the second period of time having passed, power to the motor.