公开(公告)号：US10821570B2

公开(公告)日：2020-11-03

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 ,  B24B49/10

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：US11964356B2

公开(公告)日：2024-04-23

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: B25F5/02 ,  B24B23/02

CPC classification number: B24B23/02 ,  B25F5/02

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：USD1000242S1

公开(公告)日：2023-10-03

申请号：US29837120

申请日：2022-05-02

Applicant: MAKITA CORPORATION

Designer： Kazunori Hattori ,  Ken Goto

Abstract: FIG. 1 is a front, left and top perspective view of a portable electric grinder showing our new design;
FIG. 2 is a rear, right and top perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left side elevational view thereof; and,
FIG. 8 is a right side elevational view thereof.
The broken lines in the drawings illustrate portions of the portable electric grinder which form no part of the claimed design.

公开(公告)号：US11980991B2

公开(公告)日：2024-05-14

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

CPC classification number: B24B23/028

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：US10478943B2

公开(公告)日：2019-11-19

申请号：US15258045

申请日：2016-09-07

Applicant: MAKITA CORPORATION

Inventor： Shin Nakamura ,  Takafumi Kotsuji ,  Ken Goto ,  Akira Mizutani ,  Junya Ishikawa

IPC: B24B55/05 ,  B24B23/02 ,  B25F5/02

Abstract: A grinder (100) includes a motor (12), a housing (4, 6, 30), a spindle (24), a first cover (120), and a second cover (170). The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The first cover is provided in the circumferential direction of the spindle, is fixed to the housing, and at least partially covers a tool accessory (40), which is mounted on the spindle, from above. The second cover is detachably mounted on the housing (6) independently of the first cover.