公开(公告)号：US20210016420A1

公开(公告)日：2021-01-21

申请号：US17028058

申请日：2020-09-22

Applicant: MAKITA CORPORATION

Inventor： Ryunosuke KUMAGAI ,  Akira TOMONAGA ,  Kazuya ARAKAWA

IPC: B25B21/02 ,  B25F5/02 ,  B25D11/10 ,  B25D11/04 ,  B25F5/00

Abstract: A power tool includes a motor disposed in a motor housing, a handle extending downward from the motor housing, a main switch provided on the handle and configured to switch the motor ON and OFF, and a state-changing operation part located on a lower portion of the motor housing or on an upper-end portion of the handle. The state-changing operation part is located upward of the main switch and is configured to effect a change of a rotational state of the motor, other than a direction of rotation of the motor, or an illumination level of a light.

公开(公告)号：US20190111550A1

公开(公告)日：2019-04-18

申请号：US16157475

申请日：2018-10-11

Applicant: MAKITA CORPORATION

Inventor： Itsuku KATO ,  Akira TOMONAGA ,  Katsuna HAYASHI ,  Tokuo HIRABAYASHI ,  Tomoyuki KONDO

IPC: B25B21/02 ,  B25D11/04 ,  H02P29/20 ,  H02P29/40

Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a controller for controlling driving of the motor; a first setter; and a second setter. The first setter is operated for setting, as a control method for the motor, which is usable by the controller, one of control methods preliminarily registered. The second setter is operated for setting, as a control method for the motor, which is usable by the controller, at least one of the control methods settable via the first setter.

公开(公告)号：US20170099018A1

公开(公告)日：2017-04-06

申请号：US15265388

申请日：2016-09-14

Applicant: MAKITA CORPORATION

Inventor： Akira TOMONAGA ,  Masanori FURUSAWA ,  Junya ISHIKAWA

IPC: H02P1/16 ,  H01H9/54 ,  H02H11/00 ,  B24B23/02 ,  B25F5/00

CPC classification number: H02P1/16 ,  B24B23/028 ,  B25F5/00 ,  H01H9/226 ,  H01H9/548 ,  H01H51/06 ,  H02H11/00 ,  H02P3/025 ,  H02P6/20 ,  H02P6/24

Abstract: An electric power tool includes a relay, an electric circuit, and an operation member. The relay has a coil, contacts, and an on-switch. The relay is configured such that the coil is energized when contacts are closed by an on-switch being pressed, and contacts are held in a closed state by an electromagnetic force of coil when coil is energized. In the electric circuit, electric power from power source is supplied to motor and coil of relay, and contacts are connected in series between power source and motor. The operation member is configured to move in reciprocating manner between tool stop position at which the motor stops and tool drive position which the motor runs, where the operation member is configured to locate away from on-switch of the relay at the tool drive position and configured to press the on-switch at a position other than tool drive position.

公开(公告)号：US20180281146A1

公开(公告)日：2018-10-04

申请号：US15762608

申请日：2016-09-23

Applicant: MAKITA CORPORATION

Inventor： Akira TOMONAGA ,  Katsuhito FUJINAMI ,  Ryo IMUTA ,  Masatoshi NAKAHAMA ,  Akira MIZUTANI ,  Takahiro KAWAKAMI ,  Hideharu MUTO ,  Junya ISHIKAWA ,  Ken GOTO

IPC: B24B23/02 ,  B24B55/05

CPC classification number: B24B23/022 ,  B24B23/02 ,  B24B49/10 ,  B24B55/05 ,  B24B55/052

Abstract: A grinder according to one aspect of the present disclosure includes a motor, a housing for housing the motor, a spindle protruding from the housing and configured to be driven to be rotated by the motor, a wheel cover configured to cover a part of a tip end tool attached to the spindle, a detector configured to detect the wheel cover, and a controller configured to stop or restrict the spindle being driven by the motor in response to non-detection of the wheel cover by the detector.

公开(公告)号：US20180222022A1

公开(公告)日：2018-08-09

申请号：US15880728

申请日：2018-01-26

Applicant: MAKITA CORPORATION

Inventor： Ryunosuke KUMAGAI ,  Akira TOMONAGA ,  Kazuya ARAKAWA

IPC: B25B21/02 ,  B25F5/02 ,  B25F5/00 ,  B25D11/04

CPC classification number: B25B21/02 ,  B25D11/04 ,  B25D11/104 ,  B25D2250/095 ,  B25D2250/121 ,  B25D2250/265 ,  B25F5/001 ,  B25F5/02 ,  B25F5/021 ,  F16H3/54 ,  F16H2200/2005

Abstract: A power tool includes a motor disposed in a motor housing, a handle extending downward from the motor housing, a main switch provided on the handle and configured to switch the motor ON and OFF, and a state-changing operation part located on a lower portion of the motor housing or on an upper-end portion of the handle. The state-changing operation part is located upward of the main switch and is configured to effect a change of a rotational state of the motor, other than a direction of rotation of the motor, or an illumination level of a light.

公开(公告)号：US20190111551A1

公开(公告)日：2019-04-18

申请号：US16157492

申请日：2018-10-11

Applicant: MAKITA CORPORATION

Inventor： Itsuku KATO ,  Akira TOMONAGA ,  Katsuna HAYASHI ,  Tokuo HIRABAYASHI ,  Tomoyuki KONDO

IPC: B25B21/02 ,  B25D11/04 ,  B25F5/00 ,  H02P6/17

Abstract: An electric working machine in one aspect of the present disclosure includes: a motor, a manipulator, a setter, and a controller. The setter sets first control characteristics preliminarily registered. The first control characteristics are set to achieve a rotational speed of the motor from a minimum rotational speed to a maximum rotational speed with a manipulating range of the manipulator, which is 50% or less of an effective manipulating range thereof.