公开(公告)号：US20230340965A1

公开(公告)日：2023-10-26

申请号：US18300063

申请日：2023-04-13

申请人： Makita Corporation

发明人： Shinsuke NAKA ,  Ryoji ZAMA

IPC分类号： F04D29/58 ,  F04D25/06 ,  F04D19/00 ,  F04D29/54

CPC分类号： F04D29/584 ,  F04D25/06 ,  F04D19/002 ,  F04D29/541

摘要： A blower may include an airflow pipe disposed between an inlet and an outlet, an axial flow fan including a hub and a plurality of blades, a drive shaft, an electric motor, a motor housing, a diffuser cone, a first vent defined on the diffuser cone, and a second vent defined between the hub and the motor housing. An airflow path in which air flows from the inlet to the outlet is defined in the airflow pipe. A circulation path in which the air flows from the first vent to the second vent is defined in the airflow pipe. When a circumferential end of the second vent on the inlet side is a first end and a circumferential end of the second vent on the outlet side is a second end, an outer diameter of the first end is larger than an outer diameter of the second end.

公开(公告)号：US20230339089A1

公开(公告)日：2023-10-26

申请号：US18128838

申请日：2023-03-30

申请人： MAKITA CORPORATION

发明人： Yu ETO ,  Yoshinori SASAKI ,  Luyen Van TONG

IPC分类号： B25D17/04 ,  B25F5/00

CPC分类号： B25D17/043 ,  B25F5/006

摘要： A handle for use with a power tool includes a handle body, a beam and a weight. The handle body includes a mounting part and a grip part. The handle body is configured to be removably secured to a tool body of a power tool. The grip part is formed in an elongated hollow shape. The beam is supported by the handle body in a cantilever manner and extends within the grip part. The weight is supported by the beam.

公开(公告)号：US11795967B2

公开(公告)日：2023-10-24

申请号：US17556185

申请日：2021-12-20

申请人： MAKITA CORPORATION

发明人： Fumitoshi Numata

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

CPC分类号： F04D29/4253 ,  F04D17/165 ,  F04D25/086

摘要： 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

申请人： MAKITA CORPORATION

发明人： Dai SUZUKI ,  Masayuki OKAMURA ,  Itsuku KATO

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

CPC分类号： H02P29/032 ,  B25F5/00 ,  H02P6/24

摘要： 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

申请人： Makita Corporation

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

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

CPC分类号： B62B5/0046 ,  B62B5/0053 ,  B62B5/0066 ,  B60B33/0042 ,  B60B33/0068 ,  B60B33/02

摘要： 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

申请人： MAKITA CORPORATION

发明人： Mizuki YAMAMOTO ,  Yoshitaka MACHIDA ,  Kiyonobu YOSHIKANE

IPC分类号： B23Q11/00 ,  B25D17/20

CPC分类号： B23Q11/0046 ,  B25D17/20 ,  B23Q11/0071 ,  B25D2217/0065

摘要： 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

申请人： MAKITA CORPORATION

发明人： Akihiro Nakamoto

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

CPC分类号： 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

摘要： 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

申请人： MAKITA CORPORATION

发明人： Yoshitaka Machida ,  Monthana Chutimarungsan ,  Julalak Chompurak

IPC分类号： B25F5/02 ,  B25H3/00

CPC分类号： B25F5/02 ,  B25H3/00

摘要： 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

申请人： MAKITA CORPORATION

发明人： Takayuki Tahara ,  Makoto Hotta

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

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

摘要： 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

申请人： MAKITA CORPORATION

发明人： Junichi Iwakami

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

CPC分类号： A47L9/0081 ,  A47L5/24 ,  A47L9/22 ,  A47L9/2842

摘要： 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.