公开(公告)号：US11571802B2

公开(公告)日：2023-02-07

申请号：US16756826

申请日：2018-11-08

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata ,  Hideharu Muto ,  Yasushi Ogura ,  Kenichi Tabushi

IPC: B23D49/16 ,  B25B23/02 ,  B25F5/02 ,  B25H3/00 ,  F16M13/02 ,  B24B23/02 ,  G08B21/18

Abstract: A metal wire may be provided inside a hanger portion extending with an annular shape and which is integrally formed with an outer casing. An electric power tool may be prevented from falling, etc. due to deformation or breakage of the hanger portion by being reinforced by the wire.

公开(公告)号：US11219957B2

公开(公告)日：2022-01-11

申请号：US16409918

申请日：2019-05-13

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata

IPC: G06F1/16 ,  H05K5/00 ,  H05K7/00 ,  B23D45/16 ,  B23D59/00

Abstract: A controller 50 that controls a power tool such as, for example, a portable circular saw includes a controller case 70 that houses an electric circuit board 60. Electric elements 61, 62 that generate heat and/or are to be cooled on the electric circuit board 60 contact a thick wall portion 73b of the controller case 70, resulting in heat dissipation resulting in effective cooling of the controller 50.

公开(公告)号：US12055158B2

公开(公告)日：2024-08-06

申请号：US18368847

申请日：2023-09-15

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata

IPC: F04D29/42 ,  F04D17/16 ,  F04D25/08

CPC classification number: F04D29/4253 ,  F04D17/165 ,  F04D25/086

Abstract: A blower includes a body, a motor, and a single fan configured to rotate in response to rotation of a motor shaft to discharge air through a discharge opening. The maximum rotational speed of the motor shaft is within a range of 50,000 rpm to 120,000 rpm. An area of the discharge opening is changeable by a user. The blower is configured to selectively operate in a first mode or in a second mode according to the area of the discharge opening. In the first mode, the maximum blowing force of the air discharged through the opening is within a range of 2.5 N to 5.0 N when the motor is driven at the maximum rotational speed. In the second mode, the maximum dynamic pressure of the air discharged is within a range of 30 kPa to 65 kPa when the motor is driven at the maximum rotational speed.

公开(公告)号：US11802573B2

公开(公告)日：2023-10-31

申请号：US17556167

申请日：2021-12-20

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata ,  Takumi Hayashi

IPC: F04D25/06 ,  F04D29/52 ,  F04D29/08 ,  F04D19/00

CPC classification number: F04D29/522 ,  F04D19/002 ,  F04D25/06 ,  F04D29/083

Abstract: A blower includes a body having a main inlet opening and a discharge opening, a motor assembly housed in the body, and an auxiliary inlet opening. The motor assembly includes a case, a motor and a fan. The case has a first opening and a second opening. The motor is housed within the case. The fan is configured to rotate in response to driving of the motor to generate a flow of air passing the main inlet opening, the first opening, the motor, the second opening and the discharge opening in this order. A first space that communicates with the main inlet opening and the first opening of the case is formed within the body. The auxiliary inlet opening is configured to introduce the air from an outside of the body into the first space.

公开(公告)号：US11472018B2

公开(公告)日：2022-10-18

申请号：US16872844

申请日：2020-05-12

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata

IPC: B25F5/02 ,  B24B23/00 ,  B24B23/02 ,  B24B47/12

Abstract: A power tool includes a handle detector that is less susceptible to vibrations and is highly durable and reliable. A grinder includes a brushless motor, an inner housing accommodating the brushless motor, a rubber cylinder, a spindle driven by the brushless motor, and an outer housing enclosing the inner housing and holding the inner housing with the rubber cylinder in between. The outer housing includes a handle mount and at least one handle detector that detects a side handle attached.

公开(公告)号：US11173558B2

公开(公告)日：2021-11-16

申请号：US16409918

申请日：2019-05-13

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata

IPC: G06F1/16 ,  H05K5/00 ,  H05K7/00 ,  B23D45/16 ,  B23D59/00

Abstract: A controller 50 that controls a power tool such as, for example, a portable circular saw includes a controller case 70 that houses an electric circuit board 60. Electric elements 61, 62 that generate heat and/or are to be cooled on the electric circuit board 60 contact a thick wall portion 73b of the controller case 70, resulting in heat dissipation resulting in effective cooling of the controller 50.