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    Power Tool Motor Control System and Method
    2.
    发明公开
    Power Tool Motor Control System and Method 审中-公开

    公开(公告)号：US20240278410A1

    公开(公告)日：2024-08-22

    申请号：US18582370

    申请日：2024-02-20

    Applicant: Milwaukee Electric Tool Corporation

    Inventor： Alex R. Kuhls ,  Daniel Ruppert

    IPC: B25F5/00 ,  G01R19/165 ,  H02J7/00

    CPC classification number: B25F5/005 ,  G01R19/16542 ,  H02J7/0047

    Abstract: Embodiments of the disclosure provide a system and method of operating a power tool. The method includes measuring a battery current draw, sampling the battery current draw to generate a plurality of battery current samples, calculating an averaged current value by averaging the plurality of battery current samples, and comparing the averaged current value with a predetermined current value. The method also includes determining a number of motor revolutions, comparing the number of motor revolutions to a startup threshold, and determining a cycle is complete and stopping the motor when the number of motor revolutions exceeds the startup threshold and the averaged current value is greater than the predetermined current value.

    Expansion tool
    3.
    发明授权
    Expansion tool 有权

    公开(公告)号：US11779990B2

    公开(公告)日：2023-10-10

    申请号：US17716773

    申请日：2022-04-08

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Peter J. Davies ,  Alex R. Kuhls

    IPC: B21D39/20 ,  B25F5/00 ,  B21D37/18 ,  B21D37/04

    CPC classification number: B21D39/20 ,  B21D37/04 ,  B21D37/18 ,  B25F5/001

    Abstract: An expansion tool includes a housing and a collar rotatably coupled to the housing. The collar includes a plurality of slots. The expansion tool further includes a plurality of jaws, each jaw having a projection received in a corresponding one of the plurality of slots such that the jaws are coupled for co-rotation with the collar. The expansion tool also includes a mandrel movable relative to the housing between a retracted position and an extended position, the mandrel engageable with the jaws to expand the jaws in response to movement of the mandrel to the extended position, and a drive mechanism including a rotatable cam. Rotation of the cam moves the mandrel between the retracted position and the extended position. The expansion tool further includes a rotation mechanism configured to incrementally rotate the collar.

    EXPANSION TOOL
    4.
    发明申请
    EXPANSION TOOL 有权

    公开(公告)号：US20220324008A1

    公开(公告)日：2022-10-13

    申请号：US17716773

    申请日：2022-04-08

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Peter J. Davies ,  Alex R. Kuhls

    IPC: B21D39/20 ,  B21D37/18 ,  B25F5/00

    Abstract: An expansion tool includes a housing and a collar rotatably coupled to the housing. The collar includes a plurality of slots. The expansion tool further includes a plurality of jaws, each jaw having a projection received in a corresponding one of the plurality of slots such that the jaws are coupled for co-rotation with the collar. The expansion tool also includes a mandrel movable relative to the housing between a retracted position and an extended position, the mandrel engageable with the jaws to expand the jaws in response to movement of the mandrel to the extended position, and a drive mechanism including a rotatable cam. Rotation of the cam moves the mandrel between the retracted position and the extended position. The expansion tool further includes a rotation mechanism configured to incrementally rotate the collar.

    EXPANSION TOOL
    6.
    发明公开
    EXPANSION TOOL 审中-公开

    公开(公告)号：US20240033805A1

    公开(公告)日：2024-02-01

    申请号：US18482992

    申请日：2023-10-09

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Peter J. Davies ,  Alex R. Kuhls

    IPC: B21D39/20 ,  B25F5/00 ,  B21D37/18 ,  B21D37/04

    CPC classification number: B21D39/20 ,  B25F5/001 ,  B21D37/18 ,  B21D37/04

    Abstract: An expansion tool includes a housing, a collar rotatably coupled to the housing, the collar including a plurality of slots, a plurality of jaws, each jaw having a projection received in a corresponding one of the plurality of slots such that the jaws are coupled for co-rotation with the collar, a mandrel moveable relative to the housing between a retracted position and an extended position, the mandrel engageable with the jaws to expand the jaws in response to movement of the mandrel to the extended position, and a cone received within the plurality of jaws and engageable with inner surfaces of the plurality of jaws. The mandrel is configured to engage the cone to move the cone with the mandrel to expand the jaws as the mandrel moves toward the extended position, and a rotation mechanism is configured to incrementally rotate the collar.

    CABLE COUNTER FOR A SEWER CLEANING MACHINE
    7.
    发明申请
    CABLE COUNTER FOR A SEWER CLEANING MACHINE 有权

    公开(公告)号：US20210310231A1

    公开(公告)日：2021-10-07

    申请号：US17224614

    申请日：2021-04-07

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Alex R. Kuhls ,  Luke J. Skinner ,  Carl B. Westerby

    IPC: E03F9/00 ,  G06K7/10

    Abstract: A sewer cleaning machine includes a frame and a drum rotatably supported by the frame. The drum defines an opening. The sewer cleaning machine also includes a cable supported within the drum and is operable to enter and exit the drum through the opening. The cable includes a plurality of tags spaced along a length of the cable. The sewer cleaning machine further includes a reader module positioned adjacent the opening. The reader module is operable to identify each of the plurality of tags as the plurality of tags passes the reader module and communicate to a user a distance the cable is payed out of the drum based on the plurality of tags.

    Power Tool Dynamic Motor Field Weakening System and Method
    9.
    发明公开
    Power Tool Dynamic Motor Field Weakening System and Method 审中-公开

    公开(公告)号：US20240278409A1

    公开(公告)日：2024-08-22

    申请号：US18582368

    申请日：2024-02-20

    Applicant: Milwaukee Electric Tool Corporation

    Inventor： Alex R. Kuhls

    IPC: B25F5/00 ,  H02P21/00

    CPC classification number: B25F5/005 ,  H02P21/0089

    Abstract: Embodiments of the disclosure provide a system and method of operating a motor control algorithm in a power tool to utilize dynamic field weakening. The method includes operating the motor according to dynamic field weakening, measuring sensor readings, and sampling the sensor readings. The method also includes calculating an averaged sensor reading value, comparing the averaged sensor reading value to a predetermined sensor value, and continuing to operate according to dynamic field weakening if the averaged sensor reading has not exceeded the predetermined sensor value. The method further includes changing the motor control algorithm to a static motor commutation sequence if the averaged sensor reading has exceeded the predetermined sensor value.

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