公开(公告)号：US20210053175A1

公开(公告)日：2021-02-25

申请号：US16981247

申请日：2019-03-27

Applicant: MAKITA CORPORATION

Inventor： Ryosuke OTANI ,  Junya ISHIKAWA ,  Takafumi KOTSUJI ,  Satoshi NINAGAWA ,  Ken GOTO ,  Yu ETO

IPC: B24B23/02 ,  B24B55/00

Abstract: A hand-held tool, such as a disc grinder, is used to perform work at a high work site, a countermeasure is taken to prevent the hand-held tool from falling by using a suspension tool, such as a tether strap. If a coupling part that couples the suspension tool to the hand-held tool is damaged, this fact is notified to a user. Thereby, an original function of the suspension tool can be reliably performed. If a large impact is applied to a coupling member via a suspension tool, the coupling member is displaced to a second position, due to the deformation of a first position retaining member. A conductive portion disengages from contacts to cause a power circuit to be shut off, thereby prohibiting a main body part from being activated.

公开(公告)号：US20170072532A1

公开(公告)日：2017-03-16

申请号：US15257987

申请日：2016-09-07

Applicant: MAKITA CORPORATION

Inventor： Takahiro KAWAKAMI ,  Satoshi NINAGAWA ,  Kenji SHIBATA ,  Ryosuke OTANI ,  Ryo IMUTA

IPC: B24B55/05 ,  B24B23/02

CPC classification number: B24B55/052 ,  B24B23/02 ,  B24B23/028

Abstract: A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover is provided on the spindle in the circumferential direction and at least partially covers a tool accessory, which is mounted on the spindle. The cover is configured such that at least one part deforms and/or is composed of an elastic material.

Abstract translation: 研磨机包括马达，外壳，主轴和盖子。 主轴从壳体向下突出，由电机驱动，从而旋转。 所述盖在圆周方向上设置在所述主轴上，并且至少部分地覆盖安装在所述主轴上的工具附件。 盖构造成使得至少一个部分变形和/或由弹性材料构成。

公开(公告)号：US20210299813A1

公开(公告)日：2021-09-30

申请号：US17265164

申请日：2019-08-01

Applicant: MAKITA CORPORATION

Inventor： Kenichi TABUSHI ,  Akira MIZUTANI ,  Ken GOTO ,  Kenji SHIBATA ,  Hideharu MUTO ,  Satoshi NINAGAWA ,  Junya ISHIKAWA ,  Takafumi KOTSUJI

IPC: B24B23/02

Abstract: An electric power tool disclosed herein may include a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tip tool holder connected to the power transmission mechanism; a cover covering the tip tool holder partially; a first locking mechanism configured to switch between a first locking state and a first unlocked state; and a second locking mechanism configured to switch between a second locking state and a second unlocked state. In the electric power tool, the cover may become detachable from the housing when the user performs the second unlocking operation on the second locking mechanism and the first unlocking operation on the first locking mechanism.

公开(公告)号：US20170106491A1

公开(公告)日：2017-04-20

申请号：US15287530

申请日：2016-10-06

Applicant: MAKITA CORPORATION

Inventor： Junya ISHIKAWA ,  Satoshi NINAGAWA

IPC: B24B23/02 ,  B24B37/20

CPC classification number: B24B23/02 ,  B24B37/20

Abstract: A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.

公开(公告)号：US20220234161A1

公开(公告)日：2022-07-28

申请号：US17556610

申请日：2021-12-20

Applicant: MAKITA CORPORATION

Inventor： Satoshi NINAGAWA ,  Ryosuke OTANI

IPC: B24B23/02

Abstract: A rotary tool includes simple wiring from the controller. A grinder includes a housing, a motor accommodated in the housing, a final output shaft accommodated in the housing to receive a tip tool and rotatable by the motor being driven, and a plurality of controllers accommodated in the housing. The plurality of controllers include at least a first controller receiving an electrical component of the grinder on an outer surface of the first controller. The electrical component performs an electrical operation.

公开(公告)号：US20170125192A1

公开(公告)日：2017-05-04

申请号：US15264870

申请日：2016-09-14

Applicant: MAKITA CORPORATION

Inventor： Takamasa HANAI ,  Hikaru SUNABE ,  Satoshi NINAGAWA ,  Shin NAKAMURA ,  Masatoshi NAKAHAMA ,  Kazusa FUKUDA ,  Kenichi MIYATA

IPC: H01H25/00 ,  H01H21/00 ,  H01H9/06 ,  H01H9/20 ,  B24B23/02 ,  B25F5/02

CPC classification number: H01H25/00 ,  B24B23/028 ,  B25F5/00 ,  B25F5/02 ,  H01H9/06 ,  H01H9/20 ,  H01H21/00 ,  H01H2001/508

Abstract: A power tool (1) includes an electric motor (2) as a drive source and a start switch (20; 61) that starts the electric motor (2) and is lockable in an ON position in a lock-ON state. An electromagnetic actuator (30; 40; 50; 60) pushes out or pulls in an actuation pin (30a; 40a; 50a; 60a) with respect to a body of the electromagnetic actuator (30; 40; 50; 60) in response to cutting off of a supply of electrical current to the power tool (1). The pushed-out or pulled-in actuation pin, directly or indirectly, disengages the start switch (20; 61) from the lock-ON state and/or prevents the start switch (20; 61) from being shifted into the lock-ON state.