US 11,813,722 B2
Power tool including an output position sensor
John Stanley Dey, IV, New York, NY (US); and Jacob Paul Schneider, Cedarburg, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Oct. 31, 2022, as Appl. No. 18/051,177.
Application 18/051,177 is a continuation of application No. 16/785,823, filed on Feb. 10, 2020, granted, now 11,484,999.
Application 16/785,823 is a continuation of application No. 15/441,953, filed on Feb. 24, 2017, granted, now 10,583,545, issued on Mar. 10, 2020.
Claims priority of provisional application 62/374,235, filed on Aug. 12, 2016.
Claims priority of provisional application 62/299,871, filed on Feb. 25, 2016.
Prior Publication US 2023/0127853 A1, Apr. 27, 2023
Int. Cl. B25B 23/00 (2006.01); B25B 23/147 (2006.01); B25B 21/02 (2006.01); G01D 5/20 (2006.01)
CPC B25B 23/1475 (2013.01) [B25B 21/02 (2013.01); B25B 21/026 (2013.01); G01D 5/2006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool comprising:
a motor including a rotor and a stator;
an impact mechanism coupled to the motor, the impact mechanism including
a hammer driven by the motor, and
an anvil positioned at a nose of the power tool, the anvil configured to receive an impact from the hammer;
an impact case housing the anvil and the hammer;
a central axis about which at least one of the group consisting of the rotor, the hammer, the anvil, and combinations thereof is configured to rotate;
a motor sensor board positioned perpendicularly with respect to the central axis, the motor sensor board extending in a radial outward direction with respect to the central axis;
a sensor assembly mounted to a top surface of a circuit board and located within a recess below a first plane located below the rotor, the first plane extending parallel to the central axis in a front-rear direction and horizontally outward through sides of the power tool in a left-right direction, a second plane formed by the top surface of the circuit board being parallel with the central axis and intersecting the motor sensor board, the sensor assembly configured to generate an output signal indicative of the hammer impacting the anvil; and
a controller including a processor and a memory, the controller connected to the sensor assembly and to the motor, the controller configured to:
receive the output signal from the sensor assembly,
detect a number of impacts executed by the hammer based on the output signal from the sensor assembly, and
control the motor based on the number of impacts executed by the hammer.