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公开(公告)号：US20240238948A1
公开(公告)日：2024-07-18
申请号：US18387533
申请日：2023-11-07
Applicant: MAKITA CORPORATION
Inventor： Yuta SUZUKI , Tomoyuki KONDO
Abstract: A power tool isolates a battery pack from vibrations. A power tool includes a motor, a main housing accommodating the motor, a first elastic member supported by the main housing, a battery housing supported by the first elastic member, a battery holder to which a battery pack is attachable and that is movably supported by the battery housing, and a second elastic member that restricts relative movement of the battery housing and the battery pack attached to the battery holder.
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公开(公告)号：US20230043704A1
公开(公告)日：2023-02-09
申请号：US17849179
申请日：2022-06-24
Applicant: MAKITA CORPORATION
Inventor： Tomoyuki KONDO
IPC: B25B21/02
Abstract: A technique reduces an increase in the size of an impact tool. An impact tool includes a motor, a striker drivable by the motor, an anvil including an anvil shaft to receive a tip tool, and an anvil projection protruding radially outward from a rear end of the anvil shaft to be struck by the striker in a rotation direction, a hammer case accommodating the striker, a bearing held in the hammer case and surrounding the anvil shaft, a ring member at least partially facing a front surface of the anvil projection and in contact with a rear end face of the bearing, and a stopper engaging with the hammer case and the ring member to reduce moving of the ring member rearward.
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公开(公告)号：US20190262978A1
公开(公告)日：2019-08-29
申请号：US16251425
申请日：2019-01-18
Applicant: MAKITA CORPORATION
Inventor： Haruki TEJIMA , Tomoyuki KONDO , Kenji ABE , Koji TSUKAMOTO
Abstract: An impact driver includes a hammer that is rotated by a motor and an anvil configured to be struck by the hammer to rotate the anvil about a rotational axis. A hammer case houses the hammer. Two or more bearings are provided inside the hammer case and support the anvil. To inhibit vibration of the anvil during operation, the bearings may be differing types, such as a regular ball bearing and an angular contact ball bearing, and/or the bearings may have different inner and/or outer diameters. A contact member, such as an O-ring, may be disposed in an insertion hole of the anvil to reduce vibrations that are transmitted to the tool bit.
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公开(公告)号：US20220055191A1
公开(公告)日：2022-02-24
申请号：US17517712
申请日：2021-11-03
Applicant: MAKITA CORPORATION
Inventor： Ryunosuke KUMAGAI , Tokuo HIRABAYASHI , Tomoyuki KONDO
Abstract: An impact tool (1; 1A) includes a spindle (12) rotated by a motor (10) and a hammer (70) rotated by the spindle. The hammer is designed to impact an anvil (14) in a rotational direction. A case (8) houses the hammer. A bearing (78A, 78B) is disposed between the hammer case and the anvil. An O-ring (84) is disposed between the anvil and the bearing.
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公开(公告)号：US20210162571A1
公开(公告)日：2021-06-03
申请号：US17076929
申请日：2020-10-22
Applicant: MAKITA CORPORATION
Inventor： Tomoyuki KONDO
IPC: B25B21/02
Abstract: An impact tool includes a second spring with restricted free movement. The impact tool includes a motor, a spindle rotatable with a rotational force generated by the motor, a hammer supported by the spindle in a manner movable in a front-rear direction and in a rotation direction, an anvil to be struck by the hammer in the rotation direction, a first spring constantly urging the hammer forward, a second spring that urges, forward, the hammer moving backward from a reference position, a hammer case accommodating the hammer, the first spring, and the second spring, and a movement restrictor that restricts movement of the second spring in an internal space of the hammer case.
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Patent Agency Ranking
公开(公告)号：US20200009709A1
公开(公告)日：2020-01-09
申请号：US16491731
申请日：2017-12-18
Applicant: MAKITA CORPORATION
Inventor： Ryunosuke KUMAGAI , Tokuo HIRABAYASHI , Tomoyuki KONDO
IPC: B25B21/02
Abstract: An impact tool (1; 1A) includes a spindle (12) rotated by a motor (10) and a hammer (70) held by the spindle. The hammer is designed to impact an anvil (14) in a rotational direction. A case (8) houses the hammer. A first bearing (78A) and a second bearing (78B) are held in the case and arranged along the axial direction. The first bearing and the second bearing directly hold the anvil in a rotatable manner.
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公开(公告)号：US20190111551A1
公开(公告)日：2019-04-18
申请号：US16157492
申请日：2018-10-11
Applicant: MAKITA CORPORATION
Inventor： Itsuku KATO , Akira TOMONAGA , Katsuna HAYASHI , Tokuo HIRABAYASHI , Tomoyuki KONDO
Abstract: An electric working machine in one aspect of the present disclosure includes: a motor, a manipulator, a setter, and a controller. The setter sets first control characteristics preliminarily registered. The first control characteristics are set to achieve a rotational speed of the motor from a minimum rotational speed to a maximum rotational speed with a manipulating range of the manipulator, which is 50% or less of an effective manipulating range thereof.
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公开(公告)号：US20240359298A1
公开(公告)日：2024-10-31
申请号：US18765769
申请日：2024-07-08
Applicant: MAKITA CORPORATION
Inventor： Ryunosuke KUMAGAI , Tokuo HIRABAYASHI , Tomoyuki KONDO
Abstract: A power tool includes an anvil (14) operably driven by a motor (10); an insertion hole (91) defined the anvil, into which a bit is insertable; a through hole (92) extending radially from the insertion hole; a ball (93) disposed in the through hole; and a manually-movable sleeve (99) mounted around on the anvil and being axially slidable relative to the anvil. At a retracted position, the manually-movable sleeve presses the ball radially inwardly. At an advanced position, the manually-movable sleeve releases the pressing of the ball. A flat spring (97) is configured to bias the ball radially inwardly. The manually-movable sleeve has a length such that the flat spring is exposed at the advanced position.
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公开(公告)号：US20210023629A1
公开(公告)日：2021-01-28
申请号：US16934296
申请日：2020-07-21
Applicant: MAKITA CORPORATION
Inventor： Yasuhito KAWAI , Tomoyuki KONDO
IPC: B23B31/107 , B25D16/00 , B25B21/02
Abstract: A tool-holding apparatus (70) includes an engaging member (71) for engaging a tool accessory (B) and being movably supported in axial and radial directions in a rotational-output shaft (26) having an insertion hole (81) for holding the tool accessory (B). A first biasing member (72) biases the engaging member towards engagement with the engaging member. A bit sleeve (73) is movable in the axial direction along an outer-circumferential surface of the rotational-output shaft between a blocking position at which radial outward movement of the engaging member is blocked and a permitting position at which radial outward movement of the engaging member is permitted. A second biasing member (74) biases the bit sleeve toward the blocking position. A positioning part (75) is fixed on the outer-circumferential surface of the rotational-output shaft and stops the bit sleeve at the blocking position. The bit sleeve has a projection (88), which is disposed on the forward side of the first biasing member, extends inward in the radial direction, and slidably contacts the rotational-output shaft.
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公开(公告)号：US20190111550A1
公开(公告)日：2019-04-18
申请号：US16157475
申请日：2018-10-11
Applicant: MAKITA CORPORATION
Inventor： Itsuku KATO , Akira TOMONAGA , Katsuna HAYASHI , Tokuo HIRABAYASHI , Tomoyuki KONDO
Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a controller for controlling driving of the motor; a first setter; and a second setter. The first setter is operated for setting, as a control method for the motor, which is usable by the controller, one of control methods preliminarily registered. The second setter is operated for setting, as a control method for the motor, which is usable by the controller, at least one of the control methods settable via the first setter.
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