公开(公告)号：US11949295B2

公开(公告)日：2024-04-02

申请号：US17236432

申请日：2021-04-21

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Lucas A. Rutowski ,  Maxwell L Merget ,  Douglas R. Fieldbinder

IPC: H02K11/21 ,  H02K5/22 ,  H02K11/00 ,  H02K11/215 ,  H05K1/18

CPC classification number: H02K11/215 ,  H02K5/225 ,  H02K11/0094 ,  H05K1/181 ,  H05K2201/1009 ,  H05K2201/10166 ,  H05K2201/10272

Abstract: A power tool that includes a motor and a printed circuit board (“PCB”). The motor includes a rotor and a stator. The stator includes a plurality of stator terminals. The PCB is electrically connected to the stator. The PCB includes a switch and an embedded busbar. A first end of the embedded busbar is electrically connected to the switch. The embedded busbar extends away from the PCB. A second end of the embedded busbar electrically connects to a stator terminal of the plurality of stator terminals for providing power to the motor using the switch. The embedded bus bar is embedded between two layers of the printed circuit board.

公开(公告)号：US12059777B2

公开(公告)日：2024-08-13

申请号：US17398748

申请日：2021-08-10

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jacob P. Schneider ,  Maxwell L Merget ,  Douglas R. Fieldbinder

IPC: B25B23/147 ,  B25B23/14 ,  F16D15/00 ,  F16D27/108 ,  F16D48/06

CPC classification number: B25B23/147 ,  B25B23/141 ,  F16D15/00 ,  F16D27/108 ,  F16D48/06

Abstract: A rotary power tool including a gear case, an output shaft extending from the gear case, and a drive mechanism configured to provide torque to the output shaft, causing the output shaft to rotate. The rotary power tool further includes a clutch mechanism between the output shaft and the drive mechanism. The clutch mechanism includes a compression spring and is configured to limit the amount of torque provided by the output shaft. The rotary power tool further includes a sensor positioned on a neck portion of the gear case subject to strain imparted by the compression spring, and an electronic control unit configured to receive an output signal from the strain gauge and determine a torque setting of the clutch mechanism based on the output signal.