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    Electronic braking in a power tool
    1.
    发明授权
    Electronic braking in a power tool 有权

    公开(公告)号：US12166447B2

    公开(公告)日：2024-12-10

    申请号：US18346529

    申请日：2023-07-03

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Carl B. Westerby ,  Timothy R. Obermann ,  Alex Huber

    IPC: H02P3/14 ,  B24B23/02 ,  B24B47/12 ,  B25F5/00 ,  B25F5/02 ,  H02P3/22 ,  H02P7/29

    Abstract: A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.

    SENSORLESS MOTOR CONTROL FOR A POWER TOOL
    4.
    发明申请
    SENSORLESS MOTOR CONTROL FOR A POWER TOOL 有权

    公开(公告)号：US20220241951A1

    公开(公告)日：2022-08-04

    申请号：US17724202

    申请日：2022-04-19

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Timothy R. Obermann ,  Douglas R. Fieldbinder ,  Alex Huber

    IPC: B25F5/00 ,  H02K11/27 ,  H02P21/18 ,  H02K21/16 ,  H02P6/182

    Abstract: Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller (224), a first load point based on user inputs (232) and determining, using the motor controller (224), a first motor control technique corresponding to the first load point. The method also includes driving the motor (150) based on the first motor control technique. The method further includes determining, using the motor controller (224), a change from the first load point to a second load point and determining, using the motor controller (224), a second motor control technique corresponding to the second load point. The method includes driving the motor (150) based on the second motor control technique.

    REMOTE CONTROLLED POWER UNIT
    5.
    发明申请
    REMOTE CONTROLLED POWER UNIT 有权

    公开(公告)号：US20210194332A1

    公开(公告)日：2021-06-24

    申请号：US17126453

    申请日：2020-12-18

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Patrick Dennis Gallagher ,  Timothy James Bartlett ,  Alex Huber ,  William F. Chapman, III

    IPC: H02K11/35 ,  F04B17/03 ,  H02K11/00 ,  H02K11/33 ,  H02K21/16

    Abstract: One embodiment provides a remotely controllable gas engine replacement device including a housing, a battery receptacle coupled to the housing, the battery receptacle configured to removably receive a battery pack, a motor located within the housing, a power take-off shaft receiving torque from the motor and protruding from a side of the housing, a power switching network configured to selectively provide power from the battery pack to the motor, and one or more remote control device interfaces configured to communicate with the remote control device. The remotely controllable gas engine replacement device also includes an electronic processor coupled to the power switching network and the remote control device interface. The electronic processor configured to control the power switching network to rotate the motor, receive a control signal from the remote control device, and execute a responsive action to the control signal from the remote control device.

    PEX Expanding Tool
    6.
    发明申请
    PEX Expanding Tool 有权

    公开(公告)号：US20210178657A1

    公开(公告)日：2021-06-17

    申请号：US17182849

    申请日：2021-02-23

    Applicant: Milwaukee Electric Tool Corporation

    Inventor： Corey Dickert ,  Alex Huber ,  Jarrod Kotes ,  Will Didier ,  Ian Zimmermann

    IPC: B29C57/04

    Abstract: An expanding tool comprising: an actuator comprising a cylindrical housing that defines an actuator housing cavity; a primary ram disposed within the actuator housing cavity, the primary ram defining an internal primary ram cavity; a secondary ram disposed within the internal primary ram cavity; a cam roller carrier coupled to a distal end of the secondary ram; a drive collar positioned within a distal end of the actuator housing cavity; a roller clutch disposed within an internal cavity defined by an inner surface of the drive collar; a shuttle cam positioned between the roller clutch and a distal end of the primary ram; an expander cone coupled to the primary ram; and an expander head operably coupled to the drive collar. When triggered, the actuator first rotates the expander head and then the actuator expands the expander head.

    Multi-speed power tool with electronic clutch
    9.
    发明授权
    Multi-speed power tool with electronic clutch 有权

    公开(公告)号：US10850380B2

    公开(公告)日：2020-12-01

    申请号：US15146547

    申请日：2016-05-04

    Applicant: Milwaukee Electric Tool Corporation

    Inventor： Alex Huber ,  Carl Benjamin Westerby ,  Daniel Robert Ertl ,  Matthew Wycklendt ,  Matthew Mergener ,  Mark Alan Kubale ,  Cole Conrad ,  Wing Fung Yip

    IPC: B25F5/00 ,  B25D16/00 ,  F16D48/06

    Abstract: A power tool and a method of operating a power tool including a motor, a clutch collar including a plurality of settings, a wireless transceiver operable to form a wireless connection with a remote device, and a processor coupled to the clutch collar and the wireless transceiver. The processor receives, via the wireless transceiver, a mapping including a plurality of torque levels corresponding to the plurality of settings. The processor detects that the clutch collar is set to a setting of the plurality of settings. The processor is further determines the torque level for the setting from the mapping and detects, during the operation of the power tool, that a torque of the power tool exceeds the torque level. The processor is also configured to generate an indication that the torque exceeds the torque level. The indication may include flashing a light, ratcheting the motor, and stopping the motor.

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