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公开(公告)号：US20180304380A1
公开(公告)日：2018-10-25
申请号：US15944101
申请日：2018-04-03
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA , Tomohiko IMAE
CPC classification number: B23B45/02 , B23B2260/024 , H01M2/1016 , H01M2/1022
Abstract: An electrical apparatus comprises an extension portion extending in a direction that intersects the direction in which a battery attachment surface of a battery base extends. A battery includes a plurality of battery cells with negative electrode side end faces. The battery has negative electrode side holding portions adjacent to the exterior of each of the negative electrode side end faces. The negative electrode side holding portions are located closer to the inner region of the center of gravity of the apparatus than a virtual plane to which a lateral rear side of the extension portion and a lateral rear side of the battery are tangent.
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公开(公告)号：US20250010381A1
公开(公告)日：2025-01-09
申请号：US18746123
申请日：2024-06-18
Applicant: MAKITA CORPORATION
Inventor： Tomohiko IMAE
Abstract: A core drill includes: a motor having a rotor, which is rotatable relative to a stator about a rotational axis extending in the front-rear direction; a speed-reducing mechanism, which is disposed more forward than the stator; an output shaft, at least a portion of which is disposed more forward than the speed-reducing mechanism and which, in the state in which a core bit is mounted thereon, is rotated by the rotational force of the rotor transmitted via the speed-reducing mechanism; a battery-mounting part, on which a battery pack is mounted; a motor-housing part, which houses the motor; a grip part, at least a portion of which is disposed along the extension of the rotational axis more rearward than the motor-housing part; and a controller, which controls the motor. In the front-rear direction, at least a portion of the controller is disposed between the motor and the grip part.
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公开(公告)号：US20240351181A1
公开(公告)日：2024-10-24
申请号：US18632492
申请日：2024-04-11
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA , Yuta ARAKI , Ryoichi ISHIKAWA , Tomohiko IMAE
CPC classification number: B25F5/02 , B25F5/001 , E21B11/005
Abstract: A rechargeable angle drill includes: a motor, which includes a rotor configured to rotate about a motor rotation axis, the motor rotation axis extending in an up-down direction; a motor housing part, which houses the motor; a trigger lever, which is operated to start the motor; a handle housing part, which is disposed upward of the motor housing part and in which the trigger lever is provided; a speed reduction mechanism; a gear housing part, which is disposed downward of the motor housing part and houses the speed reduction mechanism; and a rotation output part, which protrudes forward from the gear housing part and rotates about an output rotation axis orthogonal to the motor rotation axis based on a rotational force transmitted from the motor via the speed reduction mechanism. The trigger lever is disposed upward of a center of the handle housing part in the up-down direction.
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公开(公告)号：US20250010380A1
公开(公告)日：2025-01-09
申请号：US18746120
申请日：2024-06-18
Applicant: MAKITA CORPORATION
Inventor： Tomohiko IMAE
Abstract: A core drill includes: a motor having a stator and a rotor, which is rotatable relative to the stator; a speed-reducing mechanism; an output shaft that, in the state in which a core bit is mounted thereon, is rotated by the rotational force of the rotor transmitted via the speed-reducing mechanism; and a battery-mounting part, on which a battery pack is mounted. A stator outer diameter, which is the outer diameter of a stator core of the stator, is 75 mm or more; and a stator length, which is the dimension of the stator core in an axial direction, is 30 mm or more.
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公开(公告)号：US20230356382A1
公开(公告)日：2023-11-09
申请号：US17795398
申请日：2021-03-02
Applicant: MAKITA CORPORATION
Inventor： Takeshi KAMIYA , Koji TAKAHAGI , Tomohiko IMAE , Jun UEDA , Yuta ARAKI , Hidenori NAGASAKA
IPC: B25F5/02
CPC classification number: B25F5/026
Abstract: A power tool receives a reaction force with an auxiliary handle attached to the power tool. An auxiliary handle attachable to a power tool includes a first arm, a second arm that fastens, together with the first arm, at least a part of the power tool located between the first arm and the second arm, a handle, a grip sensor that detects the handle being gripped with the first arm and the second arm fastening at least the part of the power tool in between, and a signal output unit that outputs, to the power tool, a grip signal indicating that the handle is gripped based on a detection signal from the grip sensor.
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Patent Agency Ranking
公开(公告)号：US20230211489A1
公开(公告)日：2023-07-06
申请号：US18184159
申请日：2023-03-15
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO , Tomohiko IMAE , Jun UEDA
Abstract: A power tool including a rear cover simplifies assembly. A driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a motor housing accommodating the motor, being cylindrical, and including a left housing and a right housing being laterally separable, a grip connected to a lower portion of the motor housing, an output unit in front of the motor and driven by the motor, and a rear cover supporting a rear portion of the rotor and closing a rear portion of the motor housing. The rear cover is held and fastened between the left housing and the right housing.
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公开(公告)号：US20210331306A1
公开(公告)日：2021-10-28
申请号：US17190115
申请日：2021-03-02
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO , Tomohiko IMAE , Jun UEDA
Abstract: A power tool including a rear cover simplifies assembly. A driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a motor housing accommodating the motor, being cylindrical, and including a left housing and a right housing being laterally separable, a grip connected to a lower portion of the motor housing, an output unit in front of the motor and driven by the motor, and a rear cover supporting a rear portion of the rotor and closing a rear portion of the motor housing. The rear cover is held and fastened between the left housing and the right housing.
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公开(公告)号：US20240044215A1
公开(公告)日：2024-02-08
申请号：US18206692
申请日：2023-06-07
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA , Tomohiko IMAE , Yoshihiro ITO
CPC classification number: E21B11/005 , E21B7/027 , E21B7/046
Abstract: A hole is formed in a drill target with improved workability. An electric work machine includes a motor, a motor housing accommodating the motor, a handle housing including a grip including a trigger switch operable to activate the motor, a reducer, a gear housing accommodating the reducer, a rotation output unit protruding frontward from the gear housing and rotatable under a rotational force transmitted from the motor through the reducer with a drill bit being attached to the rotation output unit, and a handle fastened to the gear housing and at least partially located laterally from the gear housing.
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公开(公告)号：US20230082162A1
公开(公告)日：2023-03-16
申请号：US17880786
申请日：2022-08-04
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA , Tomohiko IMAE , Taisei OSAWA
Abstract: A drilling operation is assisted to form an intended hole in a drill target. An attachment is attachable to an earth auger. The earth auger includes a motor housing accommodating a motor, a handle housing located behind the motor housing and including a grip portion receiving a trigger switch operable to activate the motor, a gear housing located in front of the motor housing and accommodating a gear, and a rotation output unit protruding downward from the gear housing to receive a drill bit. The attachment includes an auxiliary pole to be located adjacent to the drill bit and extendable in a vertical direction.
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公开(公告)号：US20210299761A1
公开(公告)日：2021-09-30
申请号：US17150528
申请日：2021-01-15
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA , Tomohiko IMAE
Abstract: A power tool has less work performance deterioration. The power tool includes a motor, a fan, a body extending in a front-rear direction and accommodating the motor and the fan, a grip extending downward from the body, a connector located frontward from the grip and extending downward from the body, a battery holder connected to a lower end of the grip and to a lower end of the connector, and an inverter board accommodated in the body to switch a current provided from a battery held by the battery holder to the motor.
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