公开(公告)号：US20230405865A1

公开(公告)日：2023-12-21

申请号：US18328067

申请日：2023-06-02

Applicant: MAKITA CORPORATION

Inventor： Takuma NIIYAMA

IPC: B27G19/00

CPC classification number: B27G19/003

Abstract: A cutter machine may include a cutter unit, a prime mover configured to drive the cutter unit, a housing including a housing body and a grip, wherein the housing body holds the cutter unit and houses the prime mover, and the grip extends from the housing body and is configured to be grasped by a user's hand, and a hand guard attached to the housing, configured to protect fingers of the user's hand grasping the grip, and being more deformable than the housing.

公开(公告)号：US20190217496A1

公开(公告)日：2019-07-18

申请号：US16245648

申请日：2019-01-11

Applicant: MAKITA CORPORATION

Inventor： Yoshinori SHIBATA ,  Daisuke SUZUKI ,  Takuma NIIYAMA

IPC: B27B17/02 ,  B23D57/02

CPC classification number: B27B17/02 ,  B23D57/023

Abstract: A chain saw may include a saw chain, a guide bar to which the saw chain is attached, a sprocket configured to move the saw chain along a periphery of the guide bar, a prime mover configured to rotate the sprocket, a housing that houses the prime mover, a bolt protruding from the housing and penetrating a hole provided in the guide bar, and a nut screwed to the bolt to fix the guide bar to the housing. The nut may be exposed to outside. A heat insulating structure may be provided on a heat transfer path between the nut and the guide bar.

公开(公告)号：US20210078154A1

公开(公告)日：2021-03-18

申请号：US17016591

申请日：2020-09-10

Applicant: Makita Corporation

Inventor： Takuma NIIYAMA

IPC: B25F5/00 ,  A01G3/053 ,  A01G3/08

Abstract: A working machine may include a pipe, a body unit, a tool unit, a shaft, and a speed increaser. The body unit may be disposed at a rear end of the pipe and include a prime mover. The tool unit may be disposed at a front end of the pipe and include a front tool. The shaft may be disposed inside the pipe and be configured to transmit power of the prime mover to the front tool. The speed increaser may be disposed between the shaft and the front tool. The speed increaser may be configured to make a rotational speed of the front tool higher than a rotational speed of the shaft.

公开(公告)号：US20190111582A1

公开(公告)日：2019-04-18

申请号：US16157387

申请日：2018-10-11

Applicant: MAKITA CORPORATION

Inventor： Daisuke SUZUKI ,  Takuma NIIYAMA

IPC: B27B17/12 ,  A01G3/08 ,  B27B17/02 ,  B27B17/00 ,  B27B17/08

CPC classification number: B27B17/12 ,  A01G3/086 ,  B27B17/0008 ,  B27B17/02 ,  B27B17/08 ,  B27B17/14

Abstract: A chain saw disclosed herein may include a motor configured to rotate a saw chain about a guide bar, a control unit configured to control a voltage applied to the motor, a body housing that houses the motor and the control unit, a battery detachably attached to the body housing, and a top handle provided above the body housing. The control unit may be disposed above the battery. In a rear view of the chain saw in a state where the chain saw is placed on a mount surface, the battery and the control unit may not overlap. In a top view of the chain saw in the state where the chain saw is placed on the mount surface, the battery and the control unit may overlap at least partially.

公开(公告)号：US20230405861A1

公开(公告)日：2023-12-21

申请号：US18331480

申请日：2023-06-08

Applicant: MAKITA CORPORATION

Inventor： Takuma NIIYAMA

IPC: B27B17/00 ,  B27B17/12

CPC classification number: B27B17/0008 ,  B27B17/12

Abstract: A working machine may include a working unit having a longitudinal direction in a front-back direction, an electric motor configured to drive the working unit, a control unit configured to control the electric motor, a housing including a housing body and a grip, wherein the housing body holds the working unit and houses the electric motor and the control unit, and the grip extends from the housing body and is configured to be grasped by a user's hand, a battery pack attached to the housing and configured to supply electric power to the electric motor via the control unit, and a trigger lever disposed on the grip and configured to operate the electric motor by being pulled toward the grip by a finger of the user. A front end of the control unit may be disposed rearward of a rear end of the trigger lever.

公开(公告)号：US20200246998A1

公开(公告)日：2020-08-06

申请号：US16777390

申请日：2020-01-30

Applicant: MAKITA CORPORATION

Inventor： Takuma NIIYAMA

IPC: B27B17/00 ,  H02K9/06 ,  H02K5/04 ,  B25F5/00 ,  H02K7/14 ,  B23D57/02

Abstract: An electric working machine may include: a support rod constituted of metal; a tool disposed at a front end of the support rod; a motor configured to drive the tool; a control unit disposed at a rear end of the support rod and configured to control the motor; and a heat transfer structure configured to transfer heat from the control unit to the support rod.