公开(公告)号：US20170297216A1

公开(公告)日：2017-10-19

申请号：US15513656

申请日：2015-10-01

Applicant: MAKITA CORPORATION

Inventor： Hideki KACHI ,  Yasuyuki KAWABATA ,  Koji HANEDA

IPC: B27B17/08 ,  B25F5/02 ,  B27B17/00 ,  B27B17/02

CPC classification number: B27B17/08 ,  B23D59/001 ,  B25F5/02 ,  B27B17/00 ,  B27B17/0008 ,  B27B17/02

Abstract: An electric chainsaw comprises: a first handle having a forwardly and rearwardly extending grip portion provided on a rear or upper portion of a housing housing an electric motor and configured to be gripped by one hand of a worker, the grip portion being provided with a trigger switch for activating the electric motor; a second handle having a laterally extending grip portion provided forward of the grip portion of the first handle and configured to be gripped by the other hand of the worker; an indicator lamp for indicating a remaining charge amount of a battery pack; and a push-button type indicator switch for causing the indicator lamp to indicate the remaining charge amount, wherein the indicator switch is provided at a position where the worker can operate the indicator switch by a finger of the other hand being gripping the grip portion of the second handle.

公开(公告)号：US09786878B2

公开(公告)日：2017-10-10

申请号：US15134782

申请日：2016-04-21

Applicant: MAKITA CORPORATION

Inventor： Hidekazu Hayashi ,  Eiji Kondo ,  Hironori Ogura ,  Hideyuki Taga ,  Kazutoshi Ogino

IPC: H01M10/052 ,  H01M2/10 ,  H01M2/34 ,  H01M2/36

CPC classification number: H01M2/1055 ,  H01M2/1016 ,  H01M2/1022 ,  H01M2/1094 ,  H01M2/34 ,  H01M2/36 ,  H01M2/364 ,  H01M2220/30

Abstract: A battery pack may include a drainage device provided at a bottom portion of the housing case. The drainage device may include a drain hole communicating between the inside and the outside of the housing case, so that water introduced into the housing case is discharged to the outside of the housing case. The drainage device may be disposed between two of the terminal members that are connected to electrodes of the battery cells.

公开(公告)号：US09782885B2

公开(公告)日：2017-10-10

申请号：US14287403

申请日：2014-05-27

Applicant: MAKITA CORPORATION

Inventor： Kiyonobu Yoshikane ,  Yoshitaka Machida

IPC: B25D17/00 ,  B25F5/00 ,  B25D17/04

CPC classification number: B25F5/006 ,  B25D17/04 ,  B25D17/043 ,  B25D2211/003 ,  B25D2211/061 ,  B25D2250/345 ,  B25D2250/371

Abstract: Reciprocating power tool is provided which is improved in vibration isolation of the handle. The reciprocating power tool has a tool body and a handle connected to the tool body. When an axial direction of a tool bit is defined as a longitudinal direction, the handle extends in a vertical direction crossing the longitudinal direction. Further, an upper region of the handle is connected to the tool body via an elastic member and a lower region of the handle is connected to the tool body via a support shaft that it can rotate around an axis of the support shaft in a transverse direction crossing both the longitudinal direction and the vertical direction with respect to the tool body. When the handle rotates around the support shaft with respect to the tool body, the elastic member reduces vibration which is caused in the tool body and transmitted to the handle.

公开(公告)号：US09782884B2

公开(公告)日：2017-10-10

申请号：US14941990

申请日：2015-11-16

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Ota ,  Hiroshi Nojiri ,  Takuya Kusakawa

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

CPC classification number: B25F5/00 ,  A01D34/78 ,  A01D34/90 ,  A01D2034/907

Abstract: 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：US20170288428A1

公开(公告)日：2017-10-05

申请号：US15451832

申请日：2017-03-07

Applicant: MAKITA CORPORATION

Inventor： Yoshihiro ISHIKAWA

IPC: H02J7/00

CPC classification number: H02J7/0026 ,  H02J7/0021 ,  H02J7/0031

Abstract: A battery charger in one aspect of the present disclosure comprises a charging unit, a first voltage detector, a second voltage detector, and a determination unit. The determination unit determines that there is an abnormality in at least one of a charge path or a detection path when an absolute value of a difference between a voltage of a battery detected by the first voltage detector and a voltage of the battery detected by a second voltage detector is equal to or greater than a threshold value.

公开(公告)号：US09768625B2

公开(公告)日：2017-09-19

申请号：US14753602

申请日：2015-06-29

Applicant: MAKITA CORPORATION

Inventor： Kazuyuki Sakakibara

IPC: H02J7/00

CPC classification number: H02J7/0019 ,  H02J7/0021 ,  H02J7/0026

Abstract: A battery pack in one aspect of the present disclosure comprises: a plurality of battery blocks, a plurality of conduction/interruption units, and a control unit. The control unit selects one battery block to be electrically connected to an external device from among the plurality of battery blocks, on the basis of detection results obtained from a state detection unit, and sets the conduction/interruption unit corresponding to the selected battery block to a conducting state.

公开(公告)号：US09757806B2

公开(公告)日：2017-09-12

申请号：US13650428

申请日：2012-10-12

Applicant: Makita Corporation

Inventor： Tsutomu Naito ,  Hirotomo Inayoshi

IPC: B23D47/12 ,  B27B9/00

CPC classification number: B23D47/12 ,  B27B9/00

Abstract: A hand-held cutting tool may include a handle and a battery pack. The handle has a rear portion with respect to a work proceeding direction along which the cutting tool is moved for performing a cutting operation. When the battery pack is mounted to the rear portion of the handle, the longitudinal direction of the battery pack extends non-parallel with the work proceeding direction.

公开(公告)号：US20170252915A1

公开(公告)日：2017-09-07

申请号：US15421118

申请日：2017-01-31

Applicant: MAKITA CORPORATION

Inventor： Masanori FURUSAWA ,  Keita MORI ,  Yoshiro TADA

IPC: B25D16/00 ,  B25D11/06

CPC classification number: B25D16/006 ,  B25D11/062 ,  B25D2211/003 ,  B25D2211/061 ,  B25D2216/0015 ,  B25D2216/0023 ,  B25D2216/0038 ,  B25D2216/0084

Abstract: A hammer drill includes a housing, a tool holder, a hammering member, a gear, and a conversion member. The gear is switched to a first state where a rotation of the intermediate shaft is transmitted and a second state where the rotation of the intermediate shaft is not transmitted, and a mode switching member is configured to perform a switching operation of the state of the gear from an outside of the housing. The switching of the state of the gear by the mode switching member provides at least two operation modes of a hammer drill mode where the gear integrally rotates with the intermediate shaft to generate the rotation and a reciprocation of the hammering member on the tool holder and a hammer mode where the gear is separated from the rotation of the intermediate shaft to generate only the reciprocation of the hammering member to be selectable.

公开(公告)号：US09755490B2

公开(公告)日：2017-09-05

申请号：US14527050

申请日：2014-10-29

Applicant: MAKITA CORPORATION

Inventor： Junya Inuzuka

IPC: H02K1/28 ,  H02K15/03 ,  B25F5/00 ,  H02K1/27 ,  H02K7/04 ,  H02K9/06 ,  H02K15/12

CPC classification number: H02K15/03 ,  B25F5/00 ,  B25F5/008 ,  H02K1/276 ,  H02K1/28 ,  H02K7/04 ,  H02K9/06 ,  H02K15/12

Abstract: A power tool includes a housing and a brushless motor, the brushless motor having a stator and a rotor inside the housing, the rotor including a rotor core having a plurality of axially extending through holes and a permanent magnet in each of the plurality of through holes. The rotor is provided with at least one positioning structure by which the rotor core can be held in a desired circumferential orientation while the permanent magnets are inserted into the through holes.

公开(公告)号：US20170239803A1

公开(公告)日：2017-08-24

申请号：US15435400

申请日：2017-02-17

Applicant: MAKITA CORPORATION

Inventor： Yonosuke AOKI

IPC: B25F5/00 ,  B25F5/02

CPC classification number: B25F5/006 ,  B25F5/008 ,  B25F5/02

Abstract: It is an object of the invention to provide an ergonomically excellent work tool while maintaining high manufacturing efficiency. A representative work tool is provided which performs a prescribed operation on a workpiece by driving a tool accessory. The work tool has an inner housing that houses a motor and a spindle, an outer housing and an elastic member. A first inner housing element and a second inner housing element are assembled while being opposed to each other in a transverse direction, and a first outer housing element and a second outer housing element are assembled while being opposed to each other in a vertical direction.