US 12,121,980 B2
Rotary power tool
Mitchell Carlson, Lisbon, WI (US); Terry L Timmons, Oconomowoc, WI (US); and Paul W. Eiche, Oconomowoc, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Nov. 29, 2021, as Appl. No. 17/536,210.
Application 17/536,210 is a continuation of application No. 16/710,154, filed on Dec. 11, 2019, granted, now 11,185,932.
Application 16/710,154 is a continuation of application No. 16/050,044, filed on Jul. 31, 2018, granted, now 10,710,172, issued on Jul. 14, 2020.
Claims priority of provisional application 62/538,884, filed on Jul. 31, 2017.
Prior Publication US 2022/0080513 A1, Mar. 17, 2022
Int. Cl. B23B 45/00 (2006.01); B23B 45/02 (2006.01); B23B 51/04 (2006.01); B23Q 11/10 (2006.01); B25F 5/00 (2006.01)
CPC B23B 45/00 (2013.01) [B23B 45/001 (2013.01); B23B 45/008 (2013.01); B23B 45/02 (2013.01); B23B 51/0486 (2013.01); B23B 2250/12 (2013.01); B23B 2260/024 (2013.01); B23Q 11/1015 (2013.01); B23Q 11/1023 (2013.01); B25F 5/008 (2013.01); Y10T 408/44 (2015.01); Y10T 408/455 (2015.01); Y10T 408/91 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A power tool, comprising:
a housing including a motor housing portion and a drive housing portion;
a handle extending from the housing and defining a gap between the handle and the housing;
a motor located within the motor housing portion, the motor having a motor output shaft;
a fan coupled to the motor output shaft for rotation therewith;
a battery removably coupled to the housing and configured to provide power to the motor,
a trigger coupled to the handle, the trigger being manipulable to energize the motor;
a spindle extending within the drive housing portion and driven by the motor output shaft to rotate about an axis; and
a fluid delivery system including a delivery line configured to supply a fluid to the spindle,
wherein the housing includes an air intake opening and a first deflector configured to inhibit the fluid from entering the housing through the air intake opening, and
wherein rotation of the fan draws an airflow into the housing through the air intake opening.