公开(公告)号：US20220324090A1

公开(公告)日：2022-10-13

申请号：US17715692

申请日：2022-04-07

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Bryan C. Kendall ,  Taylor Crabb ,  Nicholas E. Holstine ,  Zachary J. Evans ,  Jacob R. Schaddel

IPC: B25D11/12 ,  B25D16/00

Abstract: An impact power tool including a housing, a motor supported by the housing, a spindle coupled to the motor for receiving torque from the motor to cause the spindle to rotate, and a reciprocating impact mechanism operable to create a variable pressure air spring within the spindle. The impact mechanism includes a striker received within the spindle that reciprocates along a reciprocation axis in response to the variable pressure air spring, a piston that reciprocates along the reciprocation axis to induce the variable pressure air spring, and a crankshaft configured to convert continuous rotational motion from the motor to reciprocating linear movement of the piston. The crankshaft defines a crank axis perpendicular to the reciprocation axis, and the motor defines a motor axis that is parallel with the reciprocation axis. A center of gravity of the impact power tool is positioned between the motor axis and the reciprocation axis.

公开(公告)号：US11858100B2

公开(公告)日：2024-01-02

申请号：US17715692

申请日：2022-04-07

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Bryan C. Kendall ,  Taylor Crabb ,  Nicholas E. Holstine ,  Zachary J. Evans ,  Jacob R. Schaddel

IPC: B25D11/12 ,  B25D16/00 ,  B25D17/04

CPC classification number: B25D11/12 ,  B25D16/006 ,  B25D17/04 ,  B25D2211/068 ,  B25D2216/0084 ,  B25D2250/375

Abstract: An impact power tool including a housing, a motor supported by the housing, a spindle coupled to the motor for receiving torque from the motor to cause the spindle to rotate, and a reciprocating impact mechanism operable to create a variable pressure air spring within the spindle. The impact mechanism includes a striker received within the spindle that reciprocates along a reciprocation axis in response to the variable pressure air spring, a piston that reciprocates along the reciprocation axis to induce the variable pressure air spring, and a crankshaft configured to convert continuous rotational motion from the motor to reciprocating linear movement of the piston. The crankshaft defines a crank axis perpendicular to the reciprocation axis, and the motor defines a motor axis that is parallel with the reciprocation axis. A center of gravity of the impact power tool is positioned between the motor axis and the reciprocation axis.