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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
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.
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公开(公告)号：US20250167322A1
公开(公告)日：2025-05-22
申请号：US18973512
申请日：2024-12-09
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Douglas R. Fieldbinder , Matthew R. Polakowski
IPC: H01M10/44 , H01M10/42 , H01M50/209 , H02J7/00
Abstract: One embodiment provides a battery pack including a housing, a plurality of battery cells supported by the housing, and a terminal block. The terminal block is configured to be coupled to a power tool to provide operating power from the plurality of battery cells to the power tool. The terminal block has a positive power terminal, a charging terminal, and a ground terminal. The battery pack also includes a charging circuit provided between the charging terminal and the plurality of battery cells. The charging circuit is configured to receive and transfer charging current above 12 Amperes to the plurality of battery cells during charging. The charging circuit includes a charging switch and a fuse coupled between the charging terminal and the charging switch.
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公开(公告)号：US20250147110A1
公开(公告)日：2025-05-08
申请号：US19018504
申请日：2025-01-13
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Carl B. Westerby , Griffin M. Steffy , Alex R. Kuhls , Jonathan E. Abbott , Alexander T. Huber , Gareth Mueckl , Douglas R. Fieldbinder
IPC: G01R31/389 , B25F5/02 , G01R31/3842 , H01M10/42 , H01M10/48
Abstract: A power tool including a housing, a motor, a first sensing circuit configured to detect a battery pack voltage of a battery pack connected to a battery pack interface, a second sensing circuit configured to detect a current from the battery pack, and a controller. The controller is configured to receive a first signal from the first sensing circuit related to a first measurement of battery pack voltage, receive a second signal from the second sensing circuit related to the current from the battery pack, receive a third signal from the first sensing circuit related to a second measurement of battery pack voltage, and control the motor by adjusting motor control parameters based on the first measurement of battery pack voltage, the second measurement of battery pack voltage, and the current from the battery pack.
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公开(公告)号：US20250033184A1
公开(公告)日：2025-01-30
申请号：US18914735
申请日：2024-10-14
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Maxwell L. Merget , Douglas R. Fieldbinder , Jacob P. Schneider
Abstract: A trigger assembly for a power tool includes a housing, a moveable plunger extending from a surface of the housing, the movable plunger includes a first end disposed externally from the housing and a second end disposed internally within the housing. The trigger assembly further includes a trigger shoe coupled to the first end of the moveable plunger, and an arm including a first side that is moveably connected to the second end of the moveably plunger and a second side that is coupled to a magnet. The trigger assembly also includes a sensor configured to sense a magnetic field of the magnet. Movement of the trigger shoe rotates the magnet, and alters the magnetic field sensed by the sensor.
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公开(公告)号：US20240055677A1
公开(公告)日：2024-02-15
申请号：US18459827
申请日：2023-09-01
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Douglas R. Fieldbinder , Matthew R. Polakowski
IPC: H01M10/44 , H01M10/42 , H02J7/00 , H01M50/209
CPC classification number: H01M10/441 , H01M10/4207 , H02J7/0031 , H02J7/0036 , H02J7/0042 , H02J7/00038 , H01M50/209
Abstract: One embodiment provides a battery pack including a housing, a plurality of battery cells supported by the housing, and a terminal block. The terminal block is configured to be coupled to a power tool to provide operating power from the plurality of battery cells to the power tool. The terminal block has a positive power terminal, a charging terminal, and a ground terminal. The battery pack also includes a charging circuit provided between the charging terminal and the plurality of battery cells. The charging circuit is configured to receive and transfer charging current above 12 Amperes to the plurality of battery cells during charging. The charging circuit includes a charging switch and a fuse coupled between the charging terminal and the charging switch.
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Patent Agency Ranking
公开(公告)号：US20220137147A1
公开(公告)日：2022-05-05
申请号：US17512120
申请日：2021-10-27
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Carl B. Westerby , Griffin M. Steffy , Alex R. Kuhls , Jonathan E. Abbott , Alexander T. Huber , Gareth Mueckl , Douglas R. Fieldbinder
IPC: G01R31/389 , G01R31/3842 , H01M10/48 , B25F5/02
Abstract: A device, such as a power tool, configured to receive a battery pack that is operable to determine a type of battery pack that is attached to the device. When the battery pack is connected to the device, the device is configured to determine an impedance of the battery pack. Based on the determined impedance of the battery pack, the device is capable of detecting the particular type of battery pack that has been attached. In some embodiments, the device is configured to be controlled based on the type of battery pack that has been detected by the device.
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公开(公告)号：US20210379743A1
公开(公告)日：2021-12-09
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
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.
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公开(公告)号：US20210328482A1
公开(公告)日：2021-10-21
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: H02K11/215 , H02K5/22 , H02K11/00 , H05K1/18
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.
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公开(公告)号：US20190126456A1
公开(公告)日：2019-05-02
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
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.
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公开(公告)号：US20250162126A1
公开(公告)日：2025-05-22
申请号：US19018063
申请日：2025-01-13
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Timothy R. Obermann , Douglas R. Fieldbinder , Ian A. Duncan , Robert Turney
Abstract: A power tool including a housing, an input, a gear train, a motor at least partially supported by the housing and coupled to the gear train, and a controller including a processor and a memory. The controller is coupled to the input and the motor and is configured to receive an input signal from the input, determine an operating direction and an operating speed based on the input signal, cause the motor to rotate the gear train in a direction opposite the operating direction for a predetermined amount of rotation, and cause the motor to rotate in the operating direction at the operating speed.
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