US 12,472,616 B2
Rotary impact tool with thrust bearing
Mackenzie J. Nick, Theresa, WI (US); Peter J. Davies, Milwaukee, WI (US); Evan Brown, Milwaukee, WI (US); and Joseph T. Lottes, Sussex, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Mar. 12, 2024, as Appl. No. 18/602,941.
Claims priority of provisional application 63/489,932, filed on Mar. 13, 2023.
Prior Publication US 2024/0308046 A1, Sep. 19, 2024
Int. Cl. B25B 21/02 (2006.01); B25B 23/16 (2006.01); B25F 5/00 (2006.01); B25D 11/06 (2006.01); B25F 5/02 (2006.01)
CPC B25F 5/001 (2013.01) [B25B 21/02 (2013.01); B25B 21/026 (2013.01); B25B 23/16 (2013.01); B25D 11/066 (2013.01); B25F 5/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rotary impact tool comprising:
a housing;
a motor supported within the housing, the motor including a shaft configured to rotate about an axis;
a gear assembly operably coupled to the motor, the gear assembly including a ring gear fixed relative to the housing and a plurality of planet gears meshed with the ring gear;
a drive assembly configured to convert continuous torque received from the shaft through the gear assembly into periodic rotational impacts upon a workpiece, the drive assembly including
a camshaft operably coupled to the gear assembly,
an anvil positioned adjacent to a forward end of the camshaft, and
a hammer configured to reciprocate along the camshaft to impart periodic rotational impacts to the anvil in response to rotation of the camshaft; and
a thrust bearing engaged with the camshaft such that the thrust bearing is configured to at least partially support the camshaft in an axial direction.