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公开(公告)号：US11701759B2
公开(公告)日：2023-07-18
申请号：US17026390
申请日：2020-09-21
Applicant: MAKITA CORPORATION
Inventor： Itsuku Kato , Yasuhito Kawai
IPC: B25B21/02 , B25B23/147 , B25B23/14 , B25F5/00
CPC classification number: B25B21/02 , B25B23/1475 , B25B23/1405 , B25D2250/221 , B25F5/001
Abstract: An electric power tool in one aspect of the present disclosure includes a motor, an impact mechanism, and a control circuit. The control circuit executes a motor control process. The motor control process includes limiting an output of the motor in response to establishment of a preset condition. The preset condition is based on a load applied to the motor.
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公开(公告)号：US20230219199A1
公开(公告)日：2023-07-13
申请号：US18125250
申请日：2023-03-23
Applicant: MAKITA CORPORATION
Inventor： Ding ZHAO
CPC classification number: B25B21/004 , B25F5/02
Abstract: An electric ratchet wrench as one example of the ratchet wrench includes an electric motor, a holder that rotatably holds a socket via a one-way clutch mechanism, and a spindle configured to convert a driving force from the motor into a reciprocating rotation motion of the holder. A space is provided between the socket and the holder. The space includes large interval portions and small interval portions. The small interval portions are adjacent to the large interval portions in a rotation direction (lock direction) of the socket and have distances smaller than distances of the large interval portions. Additionally, the one-way clutch mechanism includes columnar locking pins disposed between the spaces and have a diameter with a size equal to or less than the distances of the large interval portions and exceeding the distances of the small interval portions.
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公开(公告)号：US11691258B2
公开(公告)日：2023-07-04
申请号：US17411767
申请日：2021-08-25
Applicant: MAKITA CORPORATION
Inventor： Naoharu Ishikawa
Abstract: A driving tool including a timer assembly less susceptible to heat operates at a stable operating speed. The driving tool includes a trigger, a contact arm, and a timer assembly that operates in response to the trigger moving to a trigger-on-position with the contact arm remaining at an arm-off-position. The timer assembly includes a flywheel rotatable in response to the trigger moving to the trigger-on-position, and a contact restrictor movable between an unlock position at which the contact restrictor allows the contact arm to move to an arm-on-position and a lock position at which the contact restrictor restricts the contact arm from moving to the arm-on-position. The contact restrictor takes a predetermined period to move from the unlock position to the lock position in response to the trigger moving to the trigger-on-position. The predetermined period is defined by an inertial force generated by rotation of the flywheel.
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公开(公告)号：US20230208252A1
公开(公告)日：2023-06-29
申请号：US17981793
申请日：2022-11-07
Applicant: MAKITA CORPORATION
Inventor： Fuminari FUJII
Abstract: An electric work machine is driven appropriately. An electric work machine includes a motor including a stator, a rotor rotatable relative to the stator, and a rotor shaft fixed to the rotor, an output unit drivable by the rotor shaft, a plurality of heat-radiating fins, a motor case having an outer surface receiving the plurality of heat-radiating fins and accommodating the stator and the rotor, a cooling fan located outside the motor case and rotatable by the rotor shaft, and a duct including a guide to guide air through the cooling fan to a fin passage between adjacent heat-radiating fins of the plurality of heat-radiating fins.
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公开(公告)号：USD990266S1
公开(公告)日：2023-06-27
申请号：US29777492
申请日：2021-04-06
Applicant: MAKITA CORPORATION
Designer： Kazunori Hattori , Akira Mizutani
Abstract: FIG. 1 is a front perspective view of a portable power tool body in accordance with our new design;
FIG. 2 is a rear perspective view of the portable power tool body in accordance with our new design;
FIG. 3 is a front elevational view of the portable power tool body in accordance with our new design;
FIG. 4 is a rear elevational view of the portable power tool body in accordance with our new design;
FIG. 5 is a top plan view of the portable power tool body in accordance with our new design;
FIG. 6 is a bottom plan view of the portable power tool body in accordance with our new design;
FIG. 7 is a left side elevational view of the portable power tool body in accordance with our new design;
FIG. 8 is a right side elevational view of the portable power tool body in accordance with our new design; and,
FIG. 9 is a front perspective view of the portable power tool body in accordance with our new design illustrating a state in which a battery and a blade attachment are attached to the portable power tool body.
The broken line showing of the battery and the blade attachment in FIG. 9 are provided for the purpose of illustrating environmental structures; whereas the broken line showing in FIGS. 1-6 and 8 and the broke line showing in FIG. 9 other than the battery and the blade attachment illustrate portions of the portable power tool body. These broken line subject matters do not form part of the claimed design.-
Patent Agency Ranking
146.发明授权公开(公告)号：US11689127B2
公开(公告)日：2023-06-27
申请号：US17511019
申请日：2021-10-26
Applicant: MAKITA CORPORATION
Inventor： Hitoshi Suzuki
Abstract: An electric powered work machine according to one aspect of to the present disclosure includes a motor. The electric powered work machine includes a first line connecting a positive electrode of a battery to the motor. The electric powered work machine includes a second line connecting a negative electrode of the battery to the motor. The electric powered work machine includes a third line connecting the first line to the second line. The electric powered work machine includes a first capacitor disposed on the third line. The electric powered work machine includes a rectifier disposed on the third line. The rectifier limits or inhibits an electric current flowing from the second line to the first line through the third line. The electric powered work machine includes a first circuit connected to the third line. The first circuit has impedance that is other than zero, and bypasses the rectifier.
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公开(公告)号：US20230191649A1
公开(公告)日：2023-06-22
申请号：US18078334
申请日：2022-12-09
Applicant: MAKITA CORPORATION
Inventor： Yohei OGINO , Koichi TSUDA
IPC: B27G19/04
CPC classification number: B27G19/04
Abstract: A portable machining apparatus includes a main body, a cover including a cover main body and a door, a door open/close mechanism, and a lock to lock the open/close mechanism in a closed state displaceably supported by the cover main body or the main body portion. The main body is displaceable relative to the cover between a first position entirely containing the tip tool in the cover, and a second position partially exposing the tip tool outside the cover. The lock is manually displaceable between a position blocking the door from opening, and a position permitting the door to open. The lock is displaceable when the main body is at the first position, and is not displaceable by abutment between the other of the cover main body and the main body and the lock operation member when the main body is at a position other than the first position.
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公开(公告)号：US20230182271A1
公开(公告)日：2023-06-15
申请号：US17975157
申请日：2022-10-27
Applicant: MAKITA CORPORATION
Inventor： Ding ZHAO
IPC: B25B21/02
CPC classification number: B25B21/026
Abstract: An impact tool has a mechanical structure to strike an anvil with a striking force appropriate for a task. An impact tool includes a motor, a hammer rotatable by the motor, an anvil that receives a tip tool and is strikable by the hammer in a rotation direction, an elastic member having a front end supporting the hammer and being extendable and contractable in a front-rear direction to apply an elastic force to the hammer toward the anvil, and a positioner supporting a rear end of the elastic member. The positioner changes a support position of the positioner supporting the rear end of the elastic member in the front-rear direction.
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公开(公告)号：US20230182269A1
公开(公告)日：2023-06-15
申请号：US18060094
申请日：2022-11-30
Applicant: MAKITA CORPORATION
Inventor： Tokuo HIRABAYASHI , Haruki TEJIMA , Kazuma AOKI , Kazunori KINOSHITA
Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
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公开(公告)号：US11671733B2
公开(公告)日：2023-06-06
申请号：US17263466
申请日：2019-06-20
Applicant: MAKITA CORPORATION
Inventor： Kazunori Tsuge
CPC classification number: H04R1/025 , H04R1/26 , H04R1/2811 , H04R5/02 , H04R2201/028
Abstract: A sound output device includes a housing having an internal space, a battery mounting unit on which a battery for an electric tool is mounted, a tweeter at least part of which is disposed in the internal space, a woofer at least part of which is disposed in the internal space, and a partition member that partitions the internal space into a first space in which the tweeter is disposed and a second space in which the woofer is disposed.
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