US 12,186,880 B2
Oscillating power tool
Jeffrey S. Holly, West Bend, WI (US); Jacob N. Zimmerman, Pewaukee, WI (US); James C. Sitter, Milwaukee, WI (US); David A Bierdeman, New Berlin, WI (US); Andrew R. Schauer, Pewaukee, WI (US); and You Gen Liu, Dongguan (CN)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Appl. No. 18/000,948
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
PCT Filed Jun. 10, 2021, PCT No. PCT/US2021/036707
§ 371(c)(1), (2) Date Dec. 7, 2022,
PCT Pub. No. WO2021/252701, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 202021094627.5 (CN), filed on Jun. 12, 2020.
Prior Publication US 2023/0211490 A1, Jul. 6, 2023
Int. Cl. B25F 5/02 (2006.01); B25F 1/02 (2006.01); B25F 3/00 (2006.01); B25F 5/00 (2006.01)
CPC B25F 5/02 (2013.01) [B25F 1/02 (2013.01); B25F 3/00 (2013.01); B25F 5/006 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An oscillating power tool comprising:
an outer housing having a head portion and a handle portion extending therefrom;
an inner housing positioned within the outer housing;
a first annular gap defined between the inner housing and the head portion of the outer housing;
a motor and a drive mechanism supported by the inner housing, the drive mechanism including an output shaft that is rotational in an oscillating manner and that defines an output axis, the output shaft extending through an opening in the head portion of the outer housing and defining a second annular gap between the output shaft and the outer housing;
a damping element positioned between the inner housing and the outer housing through which the inner housing is mounted to the outer housing, thereby attenuating vibration transmitted to the outer housing from the inner housing; and
an over-travel limit member positioned in the first annular gap,
wherein, in response to relative movement between the inner housing and the outer housing while the oscillating power tool is in use, the over-travel limit member is configured to prevent direct contact between the inner housing and the outer housing, inhibiting vibration produced by the motor and/or the drive mechanism from bypassing the damping element, and
wherein the over-travel limit member is configured to limit lateral movement of the inner housing relative to the outer housing in a direction transverse to the output axis to a distance that is less than a width of the second annular gap.