公开(公告)号：US11795967B2

公开(公告)日：2023-10-24

申请号：US17556185

申请日：2021-12-20

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：US20230336105A1

公开(公告)日：2023-10-19

申请号：US18134309

申请日：2023-04-13

Applicant: MAKITA CORPORATION

Inventor： Dai SUZUKI ,  Masayuki OKAMURA ,  Itsuku KATO

IPC: H02P29/032 ,  B25F5/00 ,  H02P6/24

CPC classification number: H02P29/032 ,  B25F5/00 ,  H02P6/24

Abstract: An electric working machine in one aspect of the present disclosure calculates an estimated heat value based on an electric current value and a parameter. The estimated heat value corresponds to an estimated heat generation amount of a motor. The electric current value corresponds to a magnitude of an electric current delivered from a power source to the motor. The electric work machine varies the parameter based on a load time. The load time corresponds to a time period during which a first load is continuously imposed on the motor. The first load has a specified magnitude or more. The electric work machine performs a protective operation for over temperature protection of the motor based on the estimated heat value having reached a heat threshold.

公开(公告)号：US11787458B2

公开(公告)日：2023-10-17

申请号：US16985892

申请日：2020-08-05

Applicant: Makita Corporation

Inventor： Susumu Kato ,  Tomonobu Nashimoto ,  Shin Noji ,  Kohei Oishi ,  Yasuo Ifuku

IPC: B62B5/00 ,  B60B33/02 ,  B60B33/00

CPC classification number: B62B5/0046 ,  B62B5/0053 ,  B62B5/0066 ,  B60B33/0042 ,  B60B33/0068 ,  B60B33/02

Abstract: A handcart may include a frame; a drive wheel rotatably supported by the frame about a rotation axis extending in a right-left direction; a prime mover configured to rotate the drive wheel; a bracket pivotably supported by the frame about a pivot axis extending in an up-down direction; and a non-drive wheel supported by the bracket about a rotation axis extending in a direction perpendicular to the up-down direction. The non-drive wheel may include a first non-drive wheel and a second non-drive wheel, and the first non-drive wheel and the second non-drive wheel may be configured to be rotatable independent of each other.

公开(公告)号：US20230321776A1

公开(公告)日：2023-10-12

申请号：US18167554

申请日：2023-02-10

Applicant: MAKITA CORPORATION

Inventor： Mizuki YAMAMOTO ,  Yoshitaka MACHIDA ,  Kiyonobu YOSHIKANE

IPC: B23Q11/00 ,  B25D17/20

CPC classification number: B23Q11/0046 ,  B25D17/20 ,  B23Q11/0071 ,  B25D2217/0065

Abstract: A dust collection cup allows a bit tip to be viewable without being detached or replaced. A dust collection cup is attachable to a front cylindrical portion of a hammer drill. The dust collection cup in an attached state allows a bit attached to the front cylindrical portion to extend through the dust collection cup. The dust collection cup includes an attachment attachable to the front cylindrical portion, and a body connectable to the attachment. The body includes an extendable unit including at least a portion in an axial direction retaining a predetermined length.

公开(公告)号：US11777377B2

公开(公告)日：2023-10-03

申请号：US16693623

申请日：2019-11-25

Applicant: MAKITA CORPORATION

Inventor： Akihiro Nakamoto

IPC: H02K11/33 ,  H01L25/07 ,  H05K1/18 ,  H02K11/00 ,  H02K11/25 ,  A01D34/78 ,  A01D34/68 ,  H01L23/40 ,  H02K9/22 ,  A01D101/00 ,  H01R12/58

CPC classification number: H02K11/33 ,  A01D34/6806 ,  A01D34/78 ,  H01L23/4006 ,  H01L25/072 ,  H02K9/223 ,  H02K11/0094 ,  H02K11/25 ,  H05K1/18 ,  A01D2101/00 ,  H01L2023/4031 ,  H01L2023/4062 ,  H01L2023/4087 ,  H01R12/58 ,  H02K2211/03 ,  H05K2201/066 ,  H05K2201/10151 ,  H05K2201/10166

Abstract: An electric working machine includes: a motor; a semiconductor element that is provided in a current path to the motor and completes or interrupts the current path; a circuit board on which the semiconductor element is mounted, a control circuit that turns on and off the semiconductor element to control energization to the motor being assembled to the circuit board; and a heat sink for dissipating heat from the semiconductor element. The semiconductor element is attached to the heat sink via a metal-based board.

公开(公告)号：US11772254B2

公开(公告)日：2023-10-03

申请号：US17270088

申请日：2019-08-06

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka Machida ,  Monthana Chutimarungsan ,  Julalak Chompurak

IPC: B25F5/02 ,  B25H3/00

CPC classification number: B25F5/02 ,  B25H3/00

Abstract: A power tool and a hook can withstand a shock load applied when being suspended. The hook includes a hook body, a hook support supporting the hook body, and a shock absorber that is compressible and located between the hook body and the hook support to absorb shock on the hook body.

公开(公告)号：US11759076B2

公开(公告)日：2023-09-19

申请号：US17548102

申请日：2021-12-10

Applicant: MAKITA CORPORATION

Inventor： Takayuki Tahara ,  Makoto Hotta

IPC: A47L9/28 ,  A47L5/36 ,  A47L9/22 ,  A47L7/00 ,  H01M50/244 ,  H01M50/271 ,  H01M50/247 ,  A47L9/00

CPC classification number: A47L9/2884 ,  A47L5/365 ,  A47L7/0028 ,  A47L7/0085 ,  A47L9/009 ,  A47L9/22 ,  A47L9/2857 ,  H01M50/244 ,  H01M50/247 ,  H01M50/271 ,  H01M2220/30

Abstract: A dust collector has a well-balanced weight. The dust collector includes a body housing, a motor located inside the body housing, a fan rotatable by the motor, and a battery mount located inside the body housing and frontward from the motor.

公开(公告)号：US11744419B2

公开(公告)日：2023-09-05

申请号：US17330907

申请日：2021-05-26

Applicant: MAKITA CORPORATION

Inventor： Junichi Iwakami

IPC: A47L9/00 ,  A47L9/28 ,  A47L9/22 ,  A47L5/24

CPC classification number: A47L9/0081 ,  A47L5/24 ,  A47L9/22 ,  A47L9/2842

Abstract: A cleaner reduces noise. The cleaner includes a motor assembly including a motor and a fan rotatable about a rotation axis with a rotational force generated by the motor, a cover surrounding the motor assembly, a guide that guides air from the fan at least partially to an outer surface of the cover, and a rib assembly that guides the air guided by the guide at least partially in a circumferential direction about the rotation axis along the outer surface of the cover.

公开(公告)号：US20230264131A1

公开(公告)日：2023-08-24

申请号：US18163336

申请日：2023-02-02

Applicant: MAKITA CORPORATION

Inventor： Kosuke KOMIYA ,  Junichi IWAKAMI ,  Kentaro NAKAHARA

IPC: B01D46/42 ,  B01D46/24 ,  B01D39/16 ,  B01D46/00 ,  A47L9/16 ,  A47L9/00 ,  A47L9/12

CPC classification number: B01D46/4236 ,  B01D46/24 ,  B01D39/1692 ,  B01D46/0005 ,  A47L9/1608 ,  A47L9/1666 ,  A47L9/0081 ,  A47L9/127 ,  B01D2273/28 ,  B01D2279/55

Abstract: A cyclonic, dust-collecting unit includes: one or more air swirling members, which swirl(s) air; a dust cap, into which air that has passed through the swirling member(s) flows; and a filter unit, through which air that flows out of the dust cap passes. The filter unit includes: a prefilter; a sound-absorbing member, through which air that has passed through the prefilter flows; and a post filter, through which air that has passed through the sound-absorbing member flows.

公开(公告)号：US11721990B2

公开(公告)日：2023-08-08

申请号：US17393780

申请日：2021-08-04

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu Furui ,  Hitoshi Suzuki ,  Masaaki Fukumoto ,  Takuya Umemura ,  Kosuke Ito ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya Nagahama

IPC: H02J7/00 ,  B25F5/02 ,  B25F3/00 ,  B25F5/00 ,  G05B13/02 ,  G08C17/02

CPC classification number: H02J7/0042 ,  B25F3/00 ,  B25F5/00 ,  B25F5/02 ,  G05B13/024 ,  G08C17/02 ,  H02J7/00

Abstract: A power tool includes a power tool housing accommodating a motor; a battery pack interface electrically connected to the motor and being configured to be physically and electrically connected to and disconnected from a power tool interface of a battery pack; and a wireless communicator configured to be attached to or detached from the power tool housing. The wireless communicator wirelessly transmits data between the power tool and an external device using radio waves. In addition, the power tool housing includes a receptacle opening configured to accommodate the wireless communicator within the power tool housing such that no part of the wireless communicator projects or protrudes beyond an outer surface or contour of the power tool housing.