US 12,325,112 B2
Power tool with impulse assembly including a valve
Hugh A. Dales, Germantown, WI (US); Michael A. Verhagen, Nashotah, WI (US); Troy C. Thorson, Cedarburg, WI (US); and Jacob R. Seifert, Lake Mills, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Aug. 3, 2023, as Appl. No. 18/364,780.
Application 18/364,780 is a continuation in part of application No. 17/487,451, filed on Sep. 28, 2021, granted, now 11,724,368.
Claims priority of provisional application 63/084,074, filed on Sep. 28, 2020.
Prior Publication US 2023/0373067 A1, Nov. 23, 2023
Int. Cl. B25B 21/02 (2006.01); B25B 23/145 (2006.01)
CPC B25B 21/026 (2013.01) [B25B 23/1453 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A power tool comprising:
a housing;
a motor positioned within the housing;
an impulse assembly coupled to the motor to receive torque therefrom, the impulse assembly including
a cylinder at least partially forming a chamber containing a hydraulic fluid,
an anvil positioned at least partially within the chamber, and
a hammer positioned at least partially within the chamber and engageable with the anvil for transferring rotational impacts to the anvil, the hammer including a through hole; and
a valve configured to control flow of the hydraulic fluid through the through hole;
wherein the valve is configured to prevent the flow of the hydraulic fluid through the through hole in a first direction and to permit the flow of the hydraulic fluid through the through hole in a second direction; and
wherein the hydraulic fluid flows in the first direction when the hammer moves away from the anvil, and wherein the hydraulic fluid flows in the second direction when the hammer moves toward the anvil.