公开(公告)号：US20180215404A1

公开(公告)日：2018-08-02

申请号：US15854966

申请日：2017-12-27

Applicant: MAKITA CORPORATION

Inventor： Katsuna HAYASHI ,  Kouichi TAKEDA

IPC: B62B5/00 ,  B62B5/04 ,  B60L3/06

CPC classification number: B62B5/0073 ,  B60L3/0076 ,  B60L3/06 ,  B60L15/2018 ,  B60L2200/30 ,  B60L2240/421 ,  B60L2240/425 ,  B60L2240/80 ,  B62B5/004 ,  B62B5/0043 ,  B62B5/0053 ,  B62B5/0404 ,  B62B5/06

Abstract: An electric push cart includes a motor; a drive wheel that is rotationally driven by the motor; a cart frame that rotatably supports the drive wheel and includes left and right handles for a user to hold; a controller that drives the motor and issues a warning. The controller issues a warning when a motor-stop condition is fulfilled as a result of an increase in load on the motor when driving the motor and stops the drive of the motor after a given time has elapsed.

公开(公告)号：US20240364097A1

公开(公告)日：2024-10-31

申请号：US18637892

申请日：2024-04-17

Applicant: MAKITA CORPORATION

Inventor： Kazuaki USAMI ,  Masayuki OKAMURA ,  Dai SUZUKI ,  Kouichi TAKEDA

IPC: H02H7/085 ,  A01G3/08 ,  B27B17/02 ,  B27B17/08

CPC classification number: H02H7/085 ,  B27B17/08 ,  A01G3/086 ,  B27B17/02

Abstract: An electric work machine according to the present disclosure includes: a motor; and a first control circuit. The first control circuit increases a first counter on the basis of the acquired or estimated line current value being greater than a current threshold. The first control circuit decreases the first counter on the basis of the calculated rotational speed being greater than a speed threshold. The first control circuit stops the motor on the basis of the first counter exceeding a first threshold.

公开(公告)号：US20180216793A1

公开(公告)日：2018-08-02

申请号：US15876689

申请日：2018-01-22

Applicant: MAKITA CORPORATION

Inventor： Tomonobu NASHIMOTO ,  Tetsuya KIUCHI ,  Katsuna HAYASHI ,  Kouichi TAKEDA

IPC: F21S41/00 ,  B62B5/00 ,  B62B3/12 ,  F21V23/04

Abstract: A push cart according to one aspect of the present disclosure includes a wheel, a body frame, and a lighting device. The body frame includes a handle portion and rotatably supports the wheel. The body frame is configured to be able to mount a loading platform on the body frame. The handle portion is gripped by a user of the push cart. The lighting device emits light.

公开(公告)号：US20180092298A1

公开(公告)日：2018-04-05

申请号：US15724438

申请日：2017-10-04

Applicant: MAKITA CORPORATION

Inventor： Yuji TAKAHASHI ,  Kouichi TAKEDA

IPC: A01D34/00 ,  A01D34/90 ,  A01D34/84 ,  A01G23/08 ,  A01G3/08

CPC classification number: A01D34/006 ,  A01D34/4167 ,  A01D34/828 ,  A01D34/84 ,  A01D34/90 ,  A01G3/088 ,  A01G23/08

Abstract: A working machine according to one aspect of the present disclosure comprises an operating device, a working tool, a driving device, a braking device, a detection device, and a change device. The detection device detects a mode of an operation performed on the operating device. The change device changes a brake control to be performed by the braking device according to the mode detected by the detection device.

公开(公告)号：US20180092297A1

公开(公告)日：2018-04-05

申请号：US15724308

申请日：2017-10-04

Applicant: MAKITA CORPORATION

Inventor： Ryo SUNAZUKA ,  Yuji TAKAHASHI ,  Hirokatsu YAMAMOTO ,  Kouichi TAKEDA ,  Shinya KOJIMA

IPC: A01D34/00 ,  G01P15/18 ,  G01P15/135

CPC classification number: A01D34/006 ,  A01D34/416 ,  A01D34/4167 ,  A01D34/68 ,  A01D34/78 ,  A01D34/828 ,  A01D34/90 ,  A01D2034/6843 ,  A01D2101/00 ,  G01P15/0891 ,  G01P15/135 ,  G01P15/18

Abstract: A working machine according to one aspect of the present disclosure includes a main body portion, a driving device, a working tool, a grip portion and a determiner. The grip portion is attached to the main body portion and configured to be held by a user of the working machine. The determiner is configured to determine an abnormal state of the working machine when a couple moment received by the user through the grip portion exceeds a couple threshold. The couple threshold is 200 N·m per 50 ms.

公开(公告)号：US20230065201A1

公开(公告)日：2023-03-02

申请号：US17892656

申请日：2022-08-22

Applicant: MAKITA CORPORATION

Inventor： Kouichi TAKEDA

IPC: A01G20/47 ,  H02K11/33

Abstract: An electric work machine in one aspect of the present disclosure includes an output shaft, a brushless DC motor, a first positive-side conduction path, a first negative-side conduction path, a first switch device, a manual switch, a rotation sensor, and a controller. The first switch device is on the first positive-side conduction path or the first negative-side conduction path. The controller controls a magnitude of a conduction angle based on an actual rotational frequency and a target rotational frequency of the brushless DC motor.

公开(公告)号：US20190115772A1

公开(公告)日：2019-04-18

申请号：US16161357

申请日：2018-10-16

Applicant: MAKITA CORPORATION

Inventor： Kouichi TAKEDA ,  Takuya KUSAKAWA

IPC: H02J7/00 ,  H02P23/14 ,  B27B17/08

Abstract: An electric work machine (2) includes a motor (M) and a control unit (36) that controls rotation of the motor. The control unit (36) is configured such that an operating mode is switchable between a normal mode, in which the motor is rotated within a prescribed output range, and a power mode, in which the motor is rotatable with energy greater than in the normal mode. Furthermore, the control unit (36) is configured to restrict use of the power mode.

公开(公告)号：US20190023265A1

公开(公告)日：2019-01-24

申请号：US16024272

申请日：2018-06-29

Applicant: MAKITA CORPORATION

Inventor： Kouichi TAKEDA ,  Itsuku KATO ,  Jiro SUZUKI

IPC: B60W30/09 ,  B62B5/00 ,  B60L15/20 ,  B60W10/18 ,  B60W10/08 ,  B60W50/14

CPC classification number: B60W30/09 ,  B60L15/2009 ,  B60L2200/30 ,  B60L2240/12 ,  B60L2240/421 ,  B60W10/08 ,  B60W10/18 ,  B60W50/14 ,  B60W2300/40 ,  B60W2550/10 ,  B60W2710/08 ,  B60W2710/18 ,  B62B3/12 ,  B62B5/0033

Abstract: A push cart includes a wheel, a motor, an obstacle detector, and a controller. The motor is configured to generate a rotational force that rotates the wheel. The obstacle detector is configured to detect an obstacle. The controller is configured to execute, in response to detection of the obstacle by the obstacle detector, avoidance control to control driving of the motor such that a movement of the push cart is limited. The controller is configured to disable execution of the avoidance control in response to a determination that a specified disabling condition is satisfied.

公开(公告)号：US20180152125A1

公开(公告)日：2018-05-31

申请号：US15819549

申请日：2017-11-21

Applicant: MAKITA CORPORATION

Inventor： Kouichi TAKEDA

IPC: H02P6/28 ,  H02P6/30 ,  A01D34/78 ,  A01D34/82 ,  A01D34/00 ,  A01D34/68

CPC classification number: H02P6/28 ,  A01D34/006 ,  A01D34/6806 ,  A01D34/78 ,  A01D34/824 ,  A01D2101/00 ,  H02P6/182 ,  H02P6/30

Abstract: An electric working machine includes a detector configured to detect a specified rotation position of a brushless motor based on an induced voltage, and a controller configured to control current conduction to the brushless motor by setting a commutation timing in response to a detection of the specified rotation position by the detector. The controller disables setting of the commutation timing based on the specified rotation position detected by the detector during a specified mask time from the commutation timing and increases the mask time as a load of the brushless motor is larger.

公开(公告)号：US20230294523A1

公开(公告)日：2023-09-21

申请号：US18182770

申请日：2023-03-13

Applicant: MAKITA CORPORATION

Inventor： Kouichi TAKEDA

IPC: B60L15/20 ,  B60L58/13 ,  B62B3/12 ,  B62B5/00

CPC classification number: B60L15/2018 ,  B60L58/13 ,  B62B3/12 ,  B62B5/004 ,  B62B5/0043 ,  B62B5/0069 ,  B60L2200/30 ,  B60L2250/10 ,  B60L2240/12 ,  B60L2240/549 ,  B60L2240/547

Abstract: A battery-powered dolly in one aspect of the present disclosure includes a handle, a connector, a motor, a wheel, a detector, a rotation information acquirer and a controller. The controller stops supplying an electric power from a battery to the motor based on (i) a battery current value and/or a battery voltage value detected by the detector and (ii) a rotation information acquired by the rotation information acquirer.