公开(公告)号：US10981267B2

公开(公告)日：2021-04-20

申请号：US16170836

申请日：2018-10-25

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jonathan E. Abbott ,  Timothy R. Obermann ,  John S. Dey, IV ,  Benjamin R. Suhr ,  Richard A. Ryer ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: B25B21/02 ,  B25D16/00 ,  B25F5/00 ,  B25F5/02 ,  H02K7/00 ,  H02K7/14 ,  H02K11/21

Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.

公开(公告)号：US20200023501A1

公开(公告)日：2020-01-23

申请号：US16515510

申请日：2019-07-18

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Nathan Bandy ,  Troy C. Thorson ,  Jeffrey M. Wackwitz ,  Maxwell L. Merget ,  Justin A. Evankovich ,  Jacob P. Schneider ,  Jonathan E. Abbott

IPC: B25B21/02 ,  B25B23/145

Abstract: A power tool includes a housing, a motor positioned within the housing, and an impulse assembly coupled to the motor to receive torque therefrom. The impulse assembly includes 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. The hammer includes a first side facing the anvil and a second side opposite the first side. The impulse assembly further includes a biasing member biasing the hammer towards the anvil, and a valve movable between a first position that permits a first fluid flow rate of the hydraulic fluid in the chamber from the second side to the first side, and a second position that permits a second fluid flow rate of the hydraulic fluid in the chamber from the first side to the second side.

公开(公告)号：US12240085B2

公开(公告)日：2025-03-04

申请号：US17339820

申请日：2021-06-04

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

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

IPC: B25B21/02 ,  B25B23/147 ,  G01D5/20 ,  H02K7/14 ,  H02K11/21 ,  H02K11/33 ,  H02P6/16

Abstract: A power tool including a housing, a brushless direct current (DC) motor, an impact mechanism including a hammer and an anvil, an output drive device, a position sensor, and a controller. The power tool also includes a target positioned on a shaft, a magnetic shield positioned on the shaft between the target and the anvil, and a position sensor. The position sensor includes an inductive sensor, a first transmitting circuit trace, and a first receiving circuit trace. The controller is configured to calculate a drive angle based on the determined position of the anvil, and control the brushless DC motor based on the drive angle of the anvil.

公开(公告)号：US20250038628A1

公开(公告)日：2025-01-30

申请号：US18716883

申请日：2022-12-08

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Donald J. Truettner ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: H02K11/33 ,  B25F5/00 ,  H02K7/14 ,  H02M7/00 ,  H02M7/483 ,  H02M7/5387

Abstract: A power tool includes a motor, a power source, and a printed circuit board (“PCB”) electrically connected to the motor and the power source. The PCB is mounted to the motor. The PCB includes a plurality of wide band gap semiconductor switches configured as an inverter for controlling power supplied by the power source to the motor.

公开(公告)号：US12179331B2

公开(公告)日：2024-12-31

申请号：US18295543

申请日：2023-04-04

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jonathan E. Abbott ,  Timothy R. Obermann ,  John S. Dey, IV ,  Benjamin R. Suhr ,  Richard A. Ryer ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: B25B21/02 ,  B25D16/00 ,  B25F5/00 ,  B25F5/02 ,  H02K7/00 ,  H02K7/14 ,  H02K11/21

Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.

公开(公告)号：US20240339829A1

公开(公告)日：2024-10-10

申请号：US18666057

申请日：2024-05-16

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Maxwell L. Merget ,  Jessie L. Bernitt

IPC: H02H7/26 ,  B25D17/24 ,  B25F5/00 ,  H02H1/00 ,  H02J13/00 ,  H02K7/00 ,  H02K7/14 ,  H02K11/215

CPC classification number: H02H7/26 ,  B25F5/001 ,  H02H1/0007 ,  H02K7/003 ,  H02K7/145 ,  H02K11/215 ,  B25D17/24 ,  B25D2250/095 ,  H02J13/00002

Abstract: A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.

公开(公告)号：US11897110B2

公开(公告)日：2024-02-13

申请号：US16177612

申请日：2018-11-01

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Maxwell L. Merget ,  Jingyuan Liang ,  Michael R. Sande ,  Michael Halverson ,  Ian Duncan ,  Nicholas C. Mantych ,  Alex Huber

IPC: B25F5/00 ,  H02P29/40 ,  B25F5/02 ,  B25D17/00 ,  B25B21/00 ,  B25B21/02 ,  B25D16/00

CPC classification number: B25F5/001 ,  B25B21/00 ,  B25D17/00 ,  B25F5/026 ,  H02P29/40 ,  B25B21/026 ,  B25D16/003 ,  B25D16/006 ,  B25D2216/0084 ,  B25D2250/095 ,  B25D2250/201 ,  B25D2250/221 ,  B25D2250/255 ,  B25D2250/265

Abstract: A rotary power tool includes a housing having a motor housing portion and a handle portion extending therefrom. An electric motor is positioned within the motor housing portion. The rotary power tool further includes a trigger switch configured to activate and deactivate the motor. The rotary power tool further includes a non-contact speed selector switch positioned in the housing. The non-contact speed selector switch is configured to adjust a rotational speed of the motor. The non-contact speed selector switch is separate from the trigger switch.

公开(公告)号：US11705721B2

公开(公告)日：2023-07-18

申请号：US17194722

申请日：2021-03-08

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Maxwell L. Merget ,  Jessie L. Bernitt

IPC: H02H7/26 ,  H02K11/215 ,  H02K7/00 ,  H02K7/14 ,  H02H1/00 ,  B25F5/00 ,  H02J13/00 ,  B25D17/24

CPC classification number: H02H7/26 ,  B25F5/001 ,  H02H1/0007 ,  H02K7/003 ,  H02K7/145 ,  H02K11/215 ,  B25D17/24 ,  B25D2250/095 ,  H02J13/00002

Abstract: A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.

公开(公告)号：US20210394344A1

公开(公告)日：2021-12-23

申请号：US17350617

申请日：2021-06-17

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Gareth Mueckl ,  Maxwell L. Merget ,  Douglas R. Fieldbinder ,  Justin A. Evankovich ,  Jacob P. Schneider ,  Jonathan E. Abbott

IPC: B25B23/147 ,  B25B21/02

Abstract: A power tool including a housing, a brushless direct current (DC) motor, an impact mechanism including a hammer and an anvil, an output drive device, a position sensor, and a controller. The position sensor is adjacent to a relief feature, which may be a recessed relief feature or a raised relief feature, and is configured to generate an output signal indicative of a position of the anvil. The controller is configured to calculate a drive angle based on the determined position of the anvil, and control the brushless DC motor based on the drive angle of the anvil.

公开(公告)号：US20210283759A1

公开(公告)日：2021-09-16

申请号：US17194722

申请日：2021-03-08

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Maxwell L. Merget ,  Jessie L. Bernitt

IPC: B25D17/24 ,  B25F5/00 ,  H02K7/00 ,  H02K7/14 ,  H02K11/215

Abstract: A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.