公开(公告)号：US10461674B2

公开(公告)日：2019-10-29

申请号：US15670242

申请日：2017-08-07

申请人： MAKITA CORPORATION

发明人： Michisada Yabuguchi ,  Kouichi Takeda ,  Masumi Nishimura ,  Hiroshi Nojiri

IPC分类号： H02P6/28 ,  H02P6/24 ,  H02P6/06 ,  H02P29/032 ,  B25F5/00

摘要： An electric working machine according to one aspect of the present disclosure comprises a motor, a speed setting unit, a load detection unit, a determination unit, and a parameter setting unit. The determination unit calculates an estimated value of a heat generation amount of the motor, and determines that the motor is in an overload operation state when the estimated value reaches a predetermined threshold. The parameter setting unit sets a parameter to be used for calculating the estimated value and/or the threshold in accordance with a rotation speed set by the speed setting unit.

公开(公告)号：US11533841B2

公开(公告)日：2022-12-27

申请号：US16778276

申请日：2020-01-31

申请人： MAKITA CORPORATION

发明人： Tatsuya Hata ,  Hiroshi Nojiri ,  Yoshitaka Ichikawa

IPC分类号： A01D34/73 ,  A01D34/78 ,  A01G3/06 ,  A01D34/416 ,  A01D34/90 ,  A01D34/82

摘要： One aspect of the present disclosure provides an electric working machine. The electric working machine includes a driver, a motor, and a control circuit. Attached to the driver is a selected tool. The motor drives the selected tool attached to the driver. The control circuit sets a target rotational frequency based on the selected tool. The control circuit controls the motor to rotate at the target rotational frequency.

公开(公告)号：US09782884B2

公开(公告)日：2017-10-10

申请号：US14941990

申请日：2015-11-16

申请人： MAKITA CORPORATION

发明人： Tomoyuki Ota ,  Hiroshi Nojiri ,  Takuya Kusakawa

IPC分类号： A01D34/30 ,  B25F5/00 ,  A01D34/78 ,  A01D34/90

CPC分类号： B25F5/00 ,  A01D34/78 ,  A01D34/90 ,  A01D2034/907

摘要： A motor-powered apparatus according to one aspect of the present disclosure comprises a motor, a drive switch, a reverse switch, and a control unit. The control unit is configured to drive the motor in a reverse direction when a drive command is inputted via the drive switch after a reverse command is inputted via the reverse switch and to drive the motor in a forward direction when the drive command is inputted again via the drive switch.

公开(公告)号：USRE48068E1

公开(公告)日：2020-06-30

申请号：US15938588

申请日：2018-03-28

申请人： MAKITA CORPORATION

发明人： Hiroshi Nojiri ,  Yoshifumi Morita ,  Toshikazu Migita

IPC分类号： A01D34/81 ,  A01D34/90

摘要： A brush cutter includes a frame rod, a front end housing fixedly mounted to a front end of the frame rod, a cutting blade mounted on a support shaft within the front end housing, a rear end housing fixedly mounted to a rear end of the frame rod, an electric motor mounted within the rear end housing for rotation of the cutting blade, and a source of power supply for supplying electric power to the motor. In the brush cutter, a plurality of rechargeable battery packs adapted to use in electric power tools are used as the source of power supply for the motor.

公开(公告)号：US09756783B2

公开(公告)日：2017-09-12

申请号：US14764627

申请日：2014-01-31

申请人： MAKITA CORPORATION

发明人： Hiroshi Nojiri ,  Yoshifumi Morita ,  Toshikazu Migita

IPC分类号： A01D34/81 ,  A01D34/90

CPC分类号： A01D34/81 ,  A01D34/90 ,  A01D34/902

摘要： A brush cutter includes a frame rod, a front end housing fixedly mounted to a front end of the frame rod, a cutting blade mounted on a support shaft within the front end housing, a rear end housing fixedly mounted to a rear end of the frame rod, an electric motor mounted within the rear end housing for rotation of the cutting blade, and a source of power supply for supplying electric power to the motor. In the brush cutter, a plurality of rechargeable battery packs adapted to use in electric power tools are used as the source of power supply for the motor.