US 11,897,110 B2
Non-contact speed selector switch in rotary power tool
Maxwell L. Merget, Whitefish Bay, WI (US); Jingyuan Liang, New Berlin, WI (US); Michael R. Sande, Waukesha, WI (US); Michael Halverson, Greenfield, WI (US); Ian Duncan, Milwaukee, WI (US); Nicholas C. Mantych, Burlington, WI (US); and Alex Huber, Menomonee Falls, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Nov. 1, 2018, as Appl. No. 16/177,612.
Claims priority of provisional application 62/612,777, filed on Jan. 2, 2018.
Claims priority of provisional application 62/582,516, filed on Nov. 7, 2017.
Prior Publication US 2019/0134801 A1, May 9, 2019
Int. Cl. B25F 5/00 (2006.01); H02P 29/40 (2016.01); B25F 5/02 (2006.01); B25D 17/00 (2006.01); B25B 21/00 (2006.01); B25B 21/02 (2006.01); B25D 16/00 (2006.01)
CPC B25F 5/001 (2013.01) [B25B 21/00 (2013.01); B25D 17/00 (2013.01); B25F 5/026 (2013.01); H02P 29/40 (2016.02); B25B 21/026 (2013.01); B25D 16/003 (2013.01); B25D 16/006 (2013.01); B25D 2216/0084 (2013.01); B25D 2250/095 (2013.01); B25D 2250/201 (2013.01); B25D 2250/221 (2013.01); B25D 2250/255 (2013.01); B25D 2250/265 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rotary power tool comprising:
a housing including a motor housing portion and a handle portion extending therefrom;
an electric motor positioned within the motor housing portion, the electric motor defining a longitudinal axis extending through the motor housing portion;
a trigger switch configured to activate and deactivate the motor;
a bit retainer operatively coupled to the electric motor;
a circuit board positioned in the motor housing portion, the circuit board positioned axially between the electric motor and the bit retainer relative to the longitudinal axis, the circuit board includes an axially-facing surface relative to the longitudinal axis; and
a non-contact speed selector switch positioned in the housing, the non-contact speed selector switch movable between a first position corresponding to high speed operation of the motor and a second position corresponding to low speed operation of the motor, the non-contact speed selector switch configured to adjust a rotational speed of the motor, wherein the non-contact speed selector switch is separate from the trigger switch, and wherein the circuit board includes a portion of the non-contact speed selector switch, the portion of the non-contact speed selector switch positioned on the axially-facing surface of the circuit board, and wherein the non-contact speed selector switch includes two detent recesses selectively engageable by a detent spring, the detent recesses configured to hold the non-contact speed selector switch in one of the first position or the second position.