公开(公告)号：US11235453B2

公开(公告)日：2022-02-01

申请号：US16052747

申请日：2018-08-02

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka Ichikawa ,  Goshi Ishikawa ,  Shinichi Hira ,  Yasuhito Kawai ,  Masahiro Watanabe ,  Takuya Kusakawa

IPC: B25F5/00 ,  B25B21/00 ,  H02P6/08 ,  B25B23/147 ,  H02P29/40 ,  B25B21/02 ,  H02P27/04

Abstract: An electric working machine in one aspect of the present disclosure includes a motor, a controller, and a setter. The controller is configured to change a rotational state of the motor, in response to an establishment of a condition for change after the motor is initiated, from a low speed rotation to a high speed rotation. The setter is configured to set, based on a situation in the motor in the low speed rotation, a control variable of the motor in the high speed rotation and/or the condition for change.

公开(公告)号：US09647479B2

公开(公告)日：2017-05-09

申请号：US14519684

申请日：2014-10-21

Applicant: MAKITA CORPORATION

Inventor： Tatsuki Mori ,  Toru Yamada ,  Shinichi Hira ,  Hitoshi Suzuki

IPC: H02J7/00 ,  G06F11/07 ,  G05B19/05 ,  G05B19/042 ,  H02J7/02

CPC classification number: H02J7/007 ,  G05B19/0428 ,  G05B19/058 ,  G05B2219/14086 ,  G05B2219/24125 ,  G05B2219/25158 ,  G06F11/0757 ,  G06F11/076 ,  H02J7/0021 ,  H02J7/0029 ,  H02J7/0047 ,  H02J7/0093 ,  H02J7/027

Abstract: A charging control device includes a control unit and a monitoring unit. The control unit performs at least one of controlling charging to a rechargeable battery and monitoring a state of a rechargeable battery, while outputting a state signal which indicates an operation state of the control unit. The monitoring unit determines whether or not the operation state of the control unit is a predesignated specified operation state based on the state signal outputted from the control unit.