公开(公告)号：US11491596B2

公开(公告)日：2022-11-08

申请号：US16184406

申请日：2018-11-08

申请人： Metabowerke GmbH

发明人： Frank Matheis

IPC分类号： B23Q5/58 ,  H02P29/032 ,  H02P29/10 ,  B23Q5/10 ,  H02P29/024

摘要： The invention relates to an electric machine tool comprising an electric motor, a motor control unit for operating the electric motor, an input interface for entering a target specification of an operating mode of the electric motor into the motor control unit, and a motor sensor device for detecting the operating mode of the electric motor. A slave control unit is provided, which is independent from the motor control unit and communicatingly connected to the motor sensor device and the input interface and designed to compare the operating mode of the electric motor detected by the motor sensor device with the target specification entered via the input interface, and to influence the operating mode of the electric motor in case of a defined deviation of the operating mode from the target specification by means of a control device.

公开(公告)号：US20230116331A1

公开(公告)日：2023-04-13

申请号：US17891479

申请日：2022-08-19

申请人： Metabowerke GmbH

发明人： Frank Matheis

IPC分类号： B25B21/00 ,  B25B23/00

摘要： The invention relates to a method for operating a drywall screwdriver (1), an electric motor (3) of the drywall screwdriver (1) being driven by means of a plurality of temporally spaced individual pulses (11) in order to allow a user to influence the countersinking of a screw (7) in a workpiece (10) in pulses. According to the invention, a screwing tool (8) that is mechanically coupled to the electric motor (3) and can be brought into engagement with the screw (7) is moved further by a predetermined angle of rotation (a) with each of the individual pulses (11).

公开(公告)号：US20210384724A1

公开(公告)日：2021-12-09

申请号：US17290435

申请日：2019-11-04

申请人： Metabowerke GmbH

发明人： Frank Matheis ,  Tobias Beck

IPC分类号： H02H11/00 ,  B25F5/00

摘要： The invention relates to a restart protection device (1) for a battery-powered electric hand tool (2), comprising—a control capacitor (CCTRL) having a cathode and an anode, wherein the cathode can be connected to an earth connection (10) of the electric hand tool (2) and the anode can be connected via a battery pack interface (4) of the electric hand tool (2) to a connector wire (6) of a battery pack (3) of the electric hand tool (2); —a controllable discharge circuit (14) designed for discharging the control capacitor (CCTRL), wherein a control input of the discharge circuit (14) can be connected via the battery pack interface (4) to a signal line (9) of the battery pack (3); —a measuring device (15) designed to determine a charge state of the control capacitor (CCTRL); and—a control device (13) connected to the measuring device (15), which control device is configured to inhibit start-up of the electric hand tool (2) if the charge state of the control capacitor (CCTRL) determined by means of the measuring device (15) is below a specified threshold value and an operating switch (12) on the electric hand tool (2) is pressed at the same time.

公开(公告)号：US20190210172A1

公开(公告)日：2019-07-11

申请号：US16184406

申请日：2018-11-08

申请人： Metabowerke GmbH

发明人： Frank Matheis

IPC分类号： B23Q5/58 ,  B23Q5/10 ,  H02P29/024 ,  H02P29/032 ,  H02P29/10

CPC分类号： B23Q5/58 ,  B23Q5/10 ,  B25F5/00 ,  H02P29/026 ,  H02P29/032 ,  H02P29/10

摘要： The invention relates to an electric machine tool comprising an electric motor, a motor control unit for operating the electric motor, an input interface for entering a target specification of an operating mode of the electric motor into the motor control unit, and a motor sensor device for detecting the operating mode of the electric motor. A slave control unit is provided, which is independent from the motor control unit and communicatingly connected to the motor sensor device and the input interface and designed to compare the operating mode of the electric motor detected by the motor sensor device with the target specification entered via the input interface, and to influence the operating mode of the electric motor in case of a defined deviation of the operating mode from the target specification by means of a control device.