公开(公告)号：US11575339B2

公开(公告)日：2023-02-07

申请号：US17836021

申请日：2022-06-09

Applicant: MAKITA CORPORATION

Inventor： Junichi Katayama ,  Hitoshi Suzuki

IPC: H02P31/00 ,  H02P29/40 ,  H02P29/68 ,  H01R31/06 ,  H02J7/00 ,  H02P27/06

Abstract: One aspect of the present disclosure is a power-supply apparatus to supply an electric power to an electric working machine including a trigger switch, a motor, and a tool. The power-supply apparatus includes a connection detector, a trigger detector, and a signal outputter. In response to (i) the connection detector detecting connection of the electric working machine to the power-supply apparatus, and also to (ii) the trigger detector detecting an ON state of the trigger switch, the signal outputter outputs, to the electric working machine, a discharge prohibition signal prohibiting supply of the electric power to the motor, until an OFF state of the trigger switch is detected once by the trigger detector.

公开(公告)号：US11571099B2

公开(公告)日：2023-02-07

申请号：US17130964

申请日：2020-12-22

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Yuki Kawai ,  Itsuku Kato ,  Yasutaka Hotta

IPC: H02M1/08 ,  A47L7/00 ,  A47L9/28 ,  G05F1/445

Abstract: An interlocking adapter in one aspect of the present disclosure includes a current path, an electric load, a switch, and a controller. The controller turns on and off the switch in synchronization with a change of an alternating-current voltage received from an electric outlet of an electric apparatus in response to reception of an interlocking command signal from a working machine so as to supply a load current from the electric outlet to the electric load. The controller turns on and off the switch at a specified ratio of a time every ½ cycle of the alternating-current voltage.

公开(公告)号：US11063543B2

公开(公告)日：2021-07-13

申请号：US16531519

申请日：2019-08-05

Applicant: MAKITA CORPORATION

Inventor： Akihiro Nakamoto ,  Hitoshi Suzuki

IPC: A01G20/47 ,  H02P27/06 ,  H02J7/00

Abstract: A voltage supplier in one aspect of the present disclosure includes a first voltage generator, a second voltage generator, a first switcher, a second switcher, a first booster, and a second booster. The first booster boosts a voltage lower than a first switching drive voltage to thereby generate the first switching drive voltage, and supplies the first switching drive voltage to the first switcher on a first supply path. The second booster boosts a voltage lower than a second switching drive voltage to thereby generate the second switching drive voltage, and supplies the second switching drive voltage to the second switcher on a second supply path.

公开(公告)号：US10749360B2

公开(公告)日：2020-08-18

申请号：US16508950

申请日：2019-07-11

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu Furui ,  Hitoshi Suzuki ,  Masaaki Fukumoto ,  Takuya Umemura ,  Kosuke Ito ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya Nagahama

IPC: H02J7/00 ,  B25F5/02 ,  B25F3/00 ,  B25F5/00 ,  G05B13/02 ,  G08C17/02

Abstract: A power tool system includes a hand-held power tool having a power tool housing accommodating a motor, and a battery pack interface electrically connected to the motor within the power tool housing. A battery pack includes a battery pack housing accommodating at least one battery cell and a power tool interface electrically connected to the at least one battery cell within the battery pack housing. The power tool interface is configured to be physically and electrically connected to and disconnected from the battery pack interface of the power tool. A communicator is attached to or accommodated within the battery pack housing. The communicator is configured to wirelessly communicate with an external device.

公开(公告)号：US10559789B2

公开(公告)日：2020-02-11

申请号：US15403344

申请日：2017-01-11

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Ota ,  Kiyoshi Nishibe ,  Hitoshi Suzuki

IPC: A47L9/02 ,  H01M2/20 ,  H01M2/10 ,  B25F5/00 ,  H01M10/48 ,  H02J7/00 ,  H01M2/34 ,  H01M6/42 ,  H01M10/0525 ,  H01M10/058

Abstract: An adapter connects a plurality of first battery packs, each having a nominal voltage of about 18-36 volts, in series to an power tool having a rated voltage that is 36 volts or higher. The power tool includes a second battery interface configured to removably attach a second battery pack. The adapter includes a plurality of first battery interfaces configured to removably attach the plurality of first battery packs and having a different physical configuration than the second battery interface. A connector of the adapter is configured to be removably attached to the second battery interface. A plurality of visual indicators is disposed on the adapter such that they have the same or substantially the same illumination direction and they visually indicate at least a level of charge of each of the first battery packs attached to the adapter.

公开(公告)号：US10369644B2

公开(公告)日：2019-08-06

申请号：US16140912

申请日：2018-09-25

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: A47L9/28 ,  B25F5/00 ,  B23D59/00 ,  B23Q11/00 ,  B24B23/02 ,  B24B55/00 ,  B24B55/10 ,  G08C17/02

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：US10307842B2

公开(公告)日：2019-06-04

申请号：US15952660

申请日：2018-04-13

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: G05B11/01 ,  B23D59/00 ,  A47L9/28 ,  B23Q11/00 ,  G08C17/02 ,  B24B23/02 ,  B24B55/00 ,  B24B55/10

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：US10090692B2

公开(公告)日：2018-10-02

申请号：US15402584

申请日：2017-01-10

Applicant: MAKITA CORPORATION

Inventor： Shuji Yoshikawa ,  Tatsuya Nagahama ,  Nobuyasu Furui ,  Hitoshi Suzuki ,  Masaaki Fukumoto ,  Takuya Umemura ,  Kosuke Ito

IPC: H02J7/00 ,  A41F9/00 ,  A45F3/14 ,  B25F5/02

Abstract: A charger for a hand-held power tool includes a power source interface, a charger base and a charging cradle rotatably supported on the charger base. The rotatable charging cradle includes at least two charging output terminals electrically connected to the power source interface. A power tool system includes the charger and the hand-held power tool. A method of charging the power tool system includes contacting charging input terminals of the power tool with the charging output terminals, rotating the charging cradle and the power tool relative to the charging base and supplying charging current to at least one battery cell while the charging cradle and the power tool are allowed to freely swing relative to the charging base.

公开(公告)号：US09941824B2

公开(公告)日：2018-04-10

申请号：US15413918

申请日：2017-01-24

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: H02P6/16 ,  H02P6/15 ,  H02P6/12 ,  A01D69/02

CPC classification number: H02P6/157 ,  A01D34/90 ,  A01D69/02 ,  H02P6/12 ,  H02P6/16 ,  H02P6/182

Abstract: An electric working machine according to one aspect of the present disclosure comprises a brushless motor, a rotational position sensor, a detector, and a calculator. The calculator detects, when the brushless motor is inertially rotated, a difference between a detection result obtained by the rotational position sensor and a detection result obtained by the detector and calculates a correction value, based on the difference, for correcting the detection result obtained by the rotational position sensor.

公开(公告)号：US20180076639A1

公开(公告)日：2018-03-15

申请号：US15689725

申请日：2017-08-29

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu FURUI ,  Hitoshi Suzuki ,  Masaaki FUKUMOTO ,  Takuya UMEMURA ,  Kosuke ITO ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya Nagahama

IPC: H02J7/00 ,  G08C17/02 ,  B25F3/00 ,  B25F5/02 ,  B25F5/00 ,  G05B13/02

CPC classification number: H02J7/0042 ,  B25F3/00 ,  B25F5/00 ,  B25F5/02 ,  G05B13/024 ,  G08C17/02 ,  H02J7/0052

Abstract: A method for recharging a battery pack (40; 40′) includes attaching a portable charger (120) to a user, which portable charger comprises or is attached to a self-contained power supply (130, 140) and wherein a first charging port (132, 146) of the portable charger is disposed, e.g., on a belt (144) worn by the user, hanging the battery pack on the belt while the battery pack is physically engaged and in electrical communication with a power tool (10; 10′), and initiating a transfer of power from the charger to the battery pack when the first charging port is at least proximal to a second charging port (85, 148) that is in electrical communication with at least one battery cell (50) of the battery pack. A portable charging system capable of performing this method, as well as an adapter for use in performing this method, are also disclosed.