公开(公告)号：US11819934B2

公开(公告)日：2023-11-21

申请号：US18092700

申请日：2023-01-03

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: B23D59/00 ,  B25F5/00 ,  A47L9/28 ,  H01Q1/12 ,  H05K3/36 ,  A47L7/00 ,  B23Q11/00 ,  G08C17/02 ,  B24B23/02 ,  B24B55/00 ,  B24B55/10

CPC classification number: B23D59/006 ,  A47L7/0095 ,  A47L9/2842 ,  A47L9/2868 ,  A47L9/2894 ,  B23D59/001 ,  B23Q11/0046 ,  B23Q11/0071 ,  B24B23/02 ,  B24B23/028 ,  B24B55/00 ,  B24B55/10 ,  B25F5/00 ,  G08C17/02 ,  H01Q1/12 ,  H05K3/36 ,  A47L2201/06

Abstract: A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

公开(公告)号：US11689127B2

公开(公告)日：2023-06-27

申请号：US17511019

申请日：2021-10-26

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: H02P6/28 ,  H02P27/08 ,  B27B9/00 ,  B23D45/16

CPC classification number: H02P6/28 ,  H02P27/08 ,  B23D45/16 ,  B27B9/00

Abstract: An electric powered work machine according to one aspect of to the present disclosure includes a motor. The electric powered work machine includes a first line connecting a positive electrode of a battery to the motor. The electric powered work machine includes a second line connecting a negative electrode of the battery to the motor. The electric powered work machine includes a third line connecting the first line to the second line. The electric powered work machine includes a first capacitor disposed on the third line. The electric powered work machine includes a rectifier disposed on the third line. The rectifier limits or inhibits an electric current flowing from the second line to the first line through the third line. The electric powered work machine includes a first circuit connected to the third line. The first circuit has impedance that is other than zero, and bypasses the rectifier.

公开(公告)号：US11482764B2

公开(公告)日：2022-10-25

申请号：US16587464

申请日：2019-09-30

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Minoru Gyoda ,  Nobuyuki Oyama ,  Hiroshi Inoue

IPC: H01M10/46 ,  H01M50/572 ,  H01M10/44 ,  H02J7/00 ,  H01M50/20

Abstract: A battery pack in one aspect of the present disclosure includes a communication terminal and a detector, and supplies electric power to an external device. The communication terminal receives a first signal, a second signal, and a third signal. The first signal has a first potential, the second signal has a second potential, and the third signal has a third potential. The first potential, the second potential, and the third potential are different from one another. The detector determines a potential at the communication terminal, to thereby detect the first signal, the second signal, or the third signal in accordance with the determined potential.

公开(公告)号：US11300594B2

公开(公告)日：2022-04-12

申请号：US17064697

申请日：2020-10-07

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: G01R31/52 ,  G01R19/165 ,  G01R31/327 ,  B25F3/00 ,  B25F5/02

Abstract: An electric working machine in one aspect of the present disclosure includes a motor, a drive current path, a resistor, a first current detector, a second current detector, and a fault determiner. The drive current path supplies the drive current to the motor. The resistor is disposed on the drive current path so as to receive the drive current. The first current detector detects a first detection value based on a first electromagnetic phenomenon with respect to the resistor. The second current detector detects a second detection value based on a second electromagnetic phenomenon with respect to the resistor. The fault determiner performs a faulty state determination based on the first detection value and the second detection value.

公开(公告)号：US11133766B2

公开(公告)日：2021-09-28

申请号：US16832443

申请日：2020-03-27

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Akihiro Nakamoto

IPC: H02P27/06 ,  B25F5/02 ,  B25B21/02

Abstract: An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.

公开(公告)号：US10222424B2

公开(公告)日：2019-03-05

申请号：US15702099

申请日：2017-09-12

Applicant: MAKITA CORPORATION

Inventor： Takuya Umemura ,  Tadahiko Kobayakawa ,  Hitoshi Suzuki

IPC: H01M10/46 ,  G01R31/36 ,  H02J7/00 ,  G01K13/00 ,  H02J7/04

Abstract: A charge control device of one example of the present invention comprises a temperature detection unit, a storage unit, and an upper limit setting unit. The storage unit stores a reference current characteristic and at least one of a first current characteristic and a second current characteristic as a charging current characteristic, and stores a reference voltage characteristic and at least one of a first voltage characteristic and a second voltage characteristic as a charging voltage characteristic. The upper limit setting unit selects a characteristic used to set upper limits of a charging current and a charging voltage to the battery from among a plurality of the charging current characteristics and a plurality of the charging voltage characteristics stored in the storage unit.

公开(公告)号：US10128548B2

公开(公告)日：2018-11-13

申请号：US15590364

申请日：2017-05-09

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: H02J7/00 ,  H01M10/48 ,  B60L3/00 ,  G01R31/36 ,  G08B21/00 ,  H01M10/44 ,  G01R31/44

Abstract: A battery device in one aspect of the present disclosure comprises a battery, a cell voltage monitoring part, a power supply line, a plurality of monitor lines, and an interrupter. The interrupter interrupts the power supply line and all of the plurality of monitor lines when the battery enters an overdischarge state.

公开(公告)号：US09774273B2

公开(公告)日：2017-09-26

申请号：US14835100

申请日：2015-08-25

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Toshiyasu Kasuya ,  Hiroki Oka

IPC: H02M7/00 ,  H02M3/04 ,  H02J7/00

CPC classification number: H02M7/003 ,  H02J7/0052 ,  H02J7/0054 ,  H02J2007/0062 ,  H02M3/04

Abstract: An electric device in one aspect of the present disclosure comprises a connector, a power supply unit, a connection-detection unit, and a control unit. The control unit is configured to control electric power supplied to the power supply unit from a battery so as to increase electric power supplied to the power supply unit when the connection-detection unit detects that an external device is connected to the connector.

公开(公告)号：US09748780B2

公开(公告)日：2017-08-29

申请号：US14526976

申请日：2014-10-29

Applicant: Makita Corporation

Inventor： Hitoshi Suzuki ,  Takuya Umemura

IPC: H02J7/00 ,  H01M2/10 ,  H01M10/46 ,  H01M2/30

CPC classification number: H02J7/0045 ,  H01M2/1055 ,  H01M2/30 ,  H01M10/46 ,  H02J7/0052

Abstract: An electric power tool system comprises a tool main body, a battery pack detachably attached to the tool main body and a first charger that charges the battery pack. The first charger is detachably attached to the tool main body and/or the battery pack. The first charger is capable of charging the battery pack while the battery pack is attached to the tool main body. The first charger is preferably cordless and contains at least rechargeable battery for storing energy to charge the battery pack.

公开(公告)号：US20170070067A1

公开(公告)日：2017-03-09

申请号：US15340689

申请日：2016-11-01

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Kosuke ITO ,  Akira Naito

IPC: H02J7/00

Abstract: A battery system for a power tool includes two or more battery packs (12), at least one battery holder (14) adapted to detachably engage two or more of the battery packs and a charger (16, 216, 316, 416) adapted to detachably engage the battery holder and to simultaneously electrically communicate with two or more of the battery packs while the at least one battery holder engages both the charger and the battery packs.

Abstract translation: 一种用于电动工具的电池系统包括两个或更多个电池组（12），适于可拆卸地接合两个或更多个电池组的至少一个电池座（14），以及一个充电器（16,216,316,416） 可拆卸地接合电池座并且同时与两个或更多个电池组电连通，同时至少一个电池座与充电器和电池组接合。