Patents Assigned to Makita Corporation
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Patent number: 11904447Abstract: A driving tool includes a piston, a driver, and a lift mechanism. The piston moves in a driving direction by a pressure of a gas. The driver extends from the piston and includes a plurality of engaged portions. The lift mechanism moves the driver in a direction opposite to the driving direction. The lift mechanism includes a rotation shaft, a wheel, a plurality of engaging portions, and a supporting member. The wheel rotates integrally with the rotation shaft. Each of the plurality of engaging portions may engage an engaged portion. The supporting member supports the wheel so the wheel is allowed to move between an initial position and an eccentric position in a radial direction of the rotation shaft.Type: GrantFiled: September 16, 2022Date of Patent: February 20, 2024Assignee: MAKITA CORPORATIONInventors: Norikazu Baba, Shun Kuriki, Kiyonobu Yoshikane
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Publication number: 20240055958Abstract: An electric work machine includes a motor, a circuit board, a case, at least one elastic member, and a filler. The circuit board includes a heat generating element mounted thereon, and the heat generating element generates heat due to the motor being driven. The case includes a heat dissipation part thermally coupled to the heat generating element and houses the circuit board therein. The at least one elastic member is placed between the circuit board and the case, and is housed inside the case. The filler is filled inside the case and fixes the circuit board and the at least one elastic member inside the case.Type: ApplicationFiled: December 15, 2021Publication date: February 15, 2024Applicant: MAKITA CORPORATIONInventors: Tsubasa YAGI, Hidekazu SUDA, Shunpei YAMAJI
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Publication number: 20240051094Abstract: The impact tool is less likely to have a shorter service life. An impact tool includes a motor, a spindle at least partially located frontward from the motor and rotatable by the motor, a hammer surrounding the spindle, and an anvil at least partially located frontward from the spindle and strikable by the hammer in a rotation direction. The spindle includes an internal space extending frontward from an opening in a rear end face of the spindle. The internal space includes a first space having a first inner diameter and connected to the opening, a second space located frontward from the first space and having a second inner diameter smaller than the first inner diameter, and a third space connected to a front end of the second space and having a third inner diameter larger than the second inner diameter. The third space contains a lubricant oil.Type: ApplicationFiled: July 3, 2023Publication date: February 15, 2024Applicant: MAKITA CORPORATIONInventor: Ding ZHAO
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Publication number: 20240051103Abstract: A driving tool for improving shock absorbability and durability of a tubular damper, the driving tool comprising a cylinder and a piston that moves inside the cylinder owing to a gas pressure. The driving tool further comprises a driver main body to drive a driving member by moving integrally with the piston, and a lift mechanism having a wheel for the driver main body to return to original position. The driver main body is arranged such that a width center line of the driver main body is offset in a direction away from the lift mechanism with respect to a width center line of the piston.Type: ApplicationFiled: July 11, 2023Publication date: February 15, 2024Applicant: MAKITA CORPORATIONInventors: Shun KURIKI, Kiyonobu YOSHIKANE, Masaya NAGAO
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Patent number: 11897044Abstract: A fine adjuster for finely adjusting the lateral tilt position of a cutting machine body has improved operability. A cutting machine includes a table, a cutting machine body, a tilting member supporting the cutting machine body in a manner laterally tiltable relative to the table, a tilting locking member, and a lever member to adjust the tilt position of the cutting machine body. The lever member includes a fulcrum coupled to the table in a manner rotatable about an axis, a load point coupled to the tilting member, and an effort point extending from the fulcrum and located at a distance from the fulcrum greater than a distance between the fulcrum and the load point.Type: GrantFiled: October 19, 2021Date of Patent: February 13, 2024Assignee: MAKITA CORPORATIONInventors: Yukinori Suzuki, Toshiyuki Kani
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Patent number: 11897339Abstract: A cart may include: a driving wheel; a motor configured to rotate the driving wheel; a motor drive circuit configured to drive the motor; a motor brake circuit configured to electrically brake the motor; a rotation speed sensor configured to detect a rotation speed of the motor; and a control device configured to control the motor via the motor drive circuit and the motor brake circuit based on a target rotation speed of the motor and the rotation speed detected by the rotation speed sensor. The motor brake circuit may include an electronically variable resistance element configured to operate in a linear mode and a switching mode in response to a control input signal. The motor brake circuit may be configured to operate the electronically variable resistance element in the linear mode when braking the motor.Type: GrantFiled: July 1, 2022Date of Patent: February 13, 2024Assignee: MAKITA CORPORATIONInventors: Kunihisa Shima, Hitoshi Suzuki, Ryo Umemoto
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Patent number: 11897111Abstract: A power tool has a motor having a rotary shaft, an eccentric shaft configured to be rotated around a rotation center axis of the rotary shaft, and a balancer configured to rotate with the rotary shaft. When viewed along the rotation center axis, (1) a first imaginary line passes the rotation center axis and an eccentric axis, (2) an imaginary perpendicular line crosses perpendicularly to the first imaginary line and passes the rotation center axis, (3) a center of gravity of the balancer is located in a region on a side opposite to the eccentric axis across the imaginary perpendicular line; and (4) a second imaginary line passes the rotation center axis and the center of gravity of the balancer and (5) the second imaginary is inclined at an inclination angle larger than 0° and smaller than 90° in a direction opposite to a rotating direction of the rotary shaft.Type: GrantFiled: May 10, 2022Date of Patent: February 13, 2024Assignee: MAKITA CORPORATIONInventors: Yasumasa Nakane, Luyen Van Tong
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Patent number: 11897109Abstract: An objective is to provide a technique to securely protect the striking tool even when the striking tool inadvertently falls down. A striking tool including a rotating shaft relatively rotatably connect a main body with a handle, a first elastic member reducing transmitting of vibration from the main body to the handle in a case that the handle relatively rotates to the main body, wherein the handle includes a battery mounting portion to which battery to drive the motor is attachable and the handle is arranged to relatively move to the main body across the rotating shaft, and an adjuster such that the relative movement amount of the handle to the main body in a predetermined direction is adjusted to be larger than the relative movement amount in a direction other than the predetermined direction.Type: GrantFiled: January 14, 2022Date of Patent: February 13, 2024Assignee: MAKITA CORPORATIONInventors: Kiyonobu Yoshikane, Mizuki Yamamoto
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Publication number: 20240048027Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.Type: ApplicationFiled: October 17, 2023Publication date: February 8, 2024Applicant: MAKITA CORPORATIONInventors: Ryosuke HARA, Tomohiro UKAI
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Publication number: 20240044215Abstract: 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.Type: ApplicationFiled: June 7, 2023Publication date: February 8, 2024Applicant: MAKITA CORPORATIONInventors: Hidenori NAGASAKA, Tomohiko IMAE, Yoshihiro ITO
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Patent number: 11890730Abstract: A driver drill includes a motor housing that holds an electric motor, an axis of rotation of a rotor of the electric motor extending in a front-rear direction of the driver drill, a grip housing having an upper end connected to a lower part of the motor housing and an enlarged-part housing connected to a lower end of the grip housing and spaced from the motor housing in an up-down direction of the driver drill that is perpendicular to the front-rear direction. A torque setting of the driver drill is changeable, and the driver drill is changeable between a setting unlocked state in which the torque setting is changeable and a setting locked state in which the torque setting is not changeable.Type: GrantFiled: June 9, 2022Date of Patent: February 6, 2024Assignee: MAKITA CORPORATIONInventors: Yuta Araki, Akira Ito
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Patent number: 11894710Abstract: A battery pack in one aspect of the present disclosure includes a first cell, a memory device, a target current calculator, and an information notifier. The memory device stores a maximum variation of a charging current value. The maximum variation is determined depending on a characteristic of the battery pack. The target current calculator calculates a newest value of a target current value based on (i) a previous value of the target current value and (ii) the maximum variation. The information notifier transmits a charge condition information including the newest value.Type: GrantFiled: September 3, 2020Date of Patent: February 6, 2024Assignee: MAKITA CORPORATIONInventor: Hiroki Uesugi
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Patent number: 11890713Abstract: A power tool may include: a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tip tool holder connected to the power transmission mechanism and holding a tip tool; and a cover covering at least a part of the tip tool. The cover may include: a fixed cover portion fixed to the housing; a movable cover portion movable with respect to the fixed cover portion; and an operation member mechanically connected to the movable cover portion and configured to move the movable cover portion with respect to the fixed cover portion.Type: GrantFiled: December 26, 2018Date of Patent: February 6, 2024Assignee: MAKITA CORPORATIONInventors: Ryo Imuta, Ryosuke Otani
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Patent number: 11890731Abstract: A power tool includes a motor; an output part configured to be rotated around a rotational axis in response to energization of the motor; a plurality of lights disposed spaced apart around the output part; and an optical member having a refractive surface that refracts illumination light emitted from a light-emitting surface of one of the lights such that the main illumination direction extends at an angle away from the rotational axis.Type: GrantFiled: May 17, 2022Date of Patent: February 6, 2024Assignee: MAKITA CORPORATIONInventor: Akihiro Hozumi
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Publication number: 20240033870Abstract: A dust collecting attachment for an electric power tool includes dust collecting fans, a suctioning portion, and a dust collecting portion. The suctioning portion generates a suctioning force by rotation of the dust collecting fans. The dust collecting portion captures dust suctioned from the suctioning portion. When the dust collecting attachment is mounted to an electric power tool including a motor, a fan shaft of the dust collecting fans is connected to a rotation shaft that is disposed in the electric power tool and rotates in accordance with driving of the motor to allow the dust collecting fans to rotate integrally with the rotation shaft. The dust collecting fans are disposed in a plurality of stages in an axial direction of the fan shaft.Type: ApplicationFiled: July 20, 2023Publication date: February 1, 2024Applicant: MAKITA CORPORATIONInventors: Hajime TAKEUCHI, Hitoshi IIDA, Masanori FURUSAWA, Yoji INOUE
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Publication number: 20240039308Abstract: A battery pack includes a battery, a coupling portion, a connection determiner, a receiver, and a prohibition range controller. The prohibition range controller varies a prohibition range depending on the connection or non-connection of the electric work machine that is determined by the connection determiner, or the specification of the electric work machine connected to the coupling portion. The prohibition range is defined by a current range and a voltage range. A discharge from the battery is prohibited in the prohibition range.Type: ApplicationFiled: December 15, 2021Publication date: February 1, 2024Applicant: MAKITA CORPORATIONInventors: Tomoki HORI, Hayato KANO
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Publication number: 20240032748Abstract: A nozzle includes: a main body having a lower surface that faces a cleaning target surface; a groove provided on the lower surface and recessed upward from the lower surface; and a suction port provided inside the groove and facing the cleaning target surface. The groove includes: a first groove; and a second groove at least a part of which is provided in the rear of the first groove. A depth H1 of the first groove is deeper than a depth H2 of the second groove.Type: ApplicationFiled: July 3, 2023Publication date: February 1, 2024Applicant: MAKITA CORPORATIONInventor: Hideaki TAKANO
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Patent number: 11883941Abstract: A hammer drill includes a housing inside which a motor, a tubular tool holder, a driving mechanism, a rotation conversion member, and an inner housing are disposed. The driving mechanism is configured to perform at least one of rotation actuation of the tool holder and hammering actuation of a bit. The inner housing supports the driving mechanism, supports the tool holder via a first bearing, and supports an output shaft via a second bearing. The inner housing is divided into a front housing holding the first bearing and a rear housing that is formed in a separate body from the front housing and holds the second bearing. The inner housing is formed by connecting the front housing to the rear housing in an axis line direction of the tool holder. A seal member sealing outside space of the inner housing inside the housing is disposed in the front housing.Type: GrantFiled: January 6, 2022Date of Patent: January 30, 2024Assignee: MAKITA CORPORATIONInventors: Yoshitaka Machida, Kiyonobu Yoshikane
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Patent number: D1012648Type: GrantFiled: January 28, 2022Date of Patent: January 30, 2024Assignee: MAKITA CORPORATIONInventors: Taiki Misawa, Yuta Okuhira
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Patent number: D1014425Type: GrantFiled: December 22, 2021Date of Patent: February 13, 2024Assignee: MAKITA CORPORATIONInventors: Tomonori Kawase, Kazuya Tanaka
