US 12,134,155 B2
Power tool including fall detection and autostop
Jonathan E. Abbott, Milwaukee, WI (US); Hannah E. Phipps, Greenwood, IN (US); Carter H. Ypma, Milwaukee, WI (US); Daniel E. Endean, Hartland, WI (US); Nicholas J. LePar, West Allis, WI (US); Grace Whitmore, Palatine, IL (US); Niladri Basu Bal, Chicago, IL (US); and Arhum M. Zafar, Brooklyn, NY (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Feb. 24, 2023, as Appl. No. 18/173,968.
Claims priority of provisional application 63/314,522, filed on Feb. 28, 2022.
Prior Publication US 2023/0271289 A1, Aug. 31, 2023
Int. Cl. B23Q 11/00 (2006.01)
CPC B23Q 11/0092 (2013.01) [B23Q 2717/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool comprising:
a motor configured to produce an output;
a sensor configured to measure an acceleration of the power tool and generate an output signal related to the acceleration; and
a controller electrically connected to the motor and the sensor and configured to:
receive the output signal related to the acceleration of the power tool from the sensor,
compare the acceleration of the power tool to a free-fall acceleration threshold,
initiate a timer when the acceleration of the power tool satisfies the free-fall acceleration threshold,
compare the timer to a free-fall timer threshold, and
stop the motor from producing the output when the timer is greater than or equal to the free-fall timer threshold.