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公开(公告)号：US20220354061A1
公开(公告)日：2022-11-10
申请号：US17633276
申请日：2020-07-07
Applicant: Makita Corporation
Inventor： Ryo SUNAZUKA
Abstract: A cam member includes an intermediate disk, a first eccentric cam disposed on an upper surface of the intermediate disk and connected to a first blade and a second eccentric cam disposed on a lower surface of the intermediate disk and connected to a second blade. A center of gravity of the first eccentric is positioned in a first direction from a rotation axis of the cam member. A center of gravity of the second eccentric cam is positioned in a second direction opposite to the first direction from the rotation axis. A center of gravity of an upper half of the intermediate disk is positioned in the second direction from the rotation axis. A center of gravity of lower half of the intermediate disk is positioned in the first direction from the rotation axis.
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公开(公告)号：US20180092297A1
公开(公告)日：2018-04-05
申请号：US15724308
申请日：2017-10-04
Applicant: MAKITA CORPORATION
Inventor： Ryo SUNAZUKA , Yuji TAKAHASHI , Hirokatsu YAMAMOTO , Kouichi TAKEDA , Shinya KOJIMA
IPC: A01D34/00 , G01P15/18 , G01P15/135
CPC classification number: A01D34/006 , A01D34/416 , A01D34/4167 , A01D34/68 , A01D34/78 , A01D34/828 , A01D34/90 , A01D2034/6843 , A01D2101/00 , G01P15/0891 , G01P15/135 , G01P15/18
Abstract: A working machine according to one aspect of the present disclosure includes a main body portion, a driving device, a working tool, a grip portion and a determiner. The grip portion is attached to the main body portion and configured to be held by a user of the working machine. The determiner is configured to determine an abnormal state of the working machine when a couple moment received by the user through the grip portion exceeds a couple threshold. The couple threshold is 200 N·m per 50 ms.
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公开(公告)号：US20210195845A1
公开(公告)日：2021-07-01
申请号：US17123618
申请日：2020-12-16
Applicant: Makita Corporation
Inventor： Ryo SUNAZUKA
Abstract: A gardening trimmer may include: a first blade connected to a first cam member and configured to reciprocate in response to rotation of the first cam member; and a second com connected to a second cam member and configured to reciprocate in opposite phase to the first blade in response to rotation of the second cam member. The first cam member includes a first eccentric cam configured to revolve around a first rotation axis and is connected to the first blade at the first eccentric cam. The second cam member includes a second eccentric cam configured to revolve around a second rotation axis and is connected to the second blade at the second eccentric cam. Each of the first and second blades is configured to reciprocate along a plane including the first and second rotation axis.
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Patent Agency Ranking
公开(公告)号：US20250063991A1
公开(公告)日：2025-02-27
申请号：US18809983
申请日：2024-08-20
Applicant: MAKITA CORPORATION
Inventor： Ryo SUNAZUKA , Tatsuya Hata
Abstract: A working machine may include a working unit including a working mechanism, an electric motor, and a motor housing, a control unit, a base, a rear housing, a front handle, and a rear handle. The base may include a passage. The motor housing may include an inner air inlet and an outer air outlet. The rear housing may include an outer air inlet and an inner air outlet. A cooling air passage may be defined in which air flows from the outer air inlet to the outer air outlet through an inside of the rear housing, the inner air outlet, the inside of the passage, the inner air inlet, and an inside of the motor housing. As viewed along a front-rear direction, the inner air inlet and the inner air outlet may overlap each other.
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公开(公告)号：US20160075007A1
公开(公告)日：2016-03-17
申请号：US14784797
申请日：2014-04-16
Applicant: MAKITA CORPORATION
Inventor： Tomoyuki KUTSUNA , Ryo SUNAZUKA , Yoshitaka MACHIDA , Masahiro ITO
CPC classification number: B25D17/043 , B25D17/24 , B25D2222/57 , B25F5/006 , B25F5/02 , B25F5/026
Abstract: To provide a handle that is effective at achieving both vibration resistance and usability. A handle attached to a tool body of a power tool has: a grip portion; a connecting portion that connects to the tool body; elastic element interposing regions that are formed between the grip portion and the connecting portion; elastic elements disposed in the elastic element interposing regions; a powder filling region formed between the grip portion and connecting portion; and a plurality of powder bodies that fill the powder filling region.
Abstract translation: 提供有效实现抗振动性和可用性的手柄。 附接到电动工具的工具主体的把手具有：把手部分; 连接部，其连接到所述工具主体; 形成在握持部和连接部之间的弹性元件插入区域; 设置在弹性元件插入区域中的弹性元件; 形成在所述把手部和连接部之间的粉末填充区域; 以及填充粉末填充区域的多个粉末体。
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公开(公告)号：US20240423107A1
公开(公告)日：2024-12-26
申请号：US18745522
申请日：2024-06-17
Applicant: MAKITA CORPORATION
Inventor： Hideaki SUGIURA , Ryo SUNAZUKA
Abstract: A working machine may include: a prime mover; an output shaft configured to move by movement of the prime mover; a first adjusting member detachably attached to the output shaft; and a working member detachably attached to the first adjusting member. The first adjusting member may include: an attaching part attached to the output shaft; and an adjusting part attached to the working member and configured to adjust an attaching posture of the working member relative to the first adjusting member.
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公开(公告)号：US20220203513A1
公开(公告)日：2022-06-30
申请号：US17551478
申请日：2021-12-15
Applicant: MAKITA CORPORATION
Inventor： Kohei OISHI , Ryo SUNAZUKA , Yoshifumi WATANABE
Abstract: A chain saw may include a saw chain, a guide bar to which the saw chain is attached, a sprocket configured to run the saw chain along a periphery of the guide bar, a prime mover configured to rotate the sprocket, an oil tank configured to store oil to be supplied to the saw chain, a housing that houses the prime mover and the oil tank, a bolt protruding from the housing and penetrating a hole disposed in the guide bar, a nut screwed onto the bolt to fix the guide bar to the housing, and a heat dissipating structure configured to dissipate heat from the bolt to the oil in the oil tank.
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公开(公告)号：US20220105852A1
公开(公告)日：2022-04-07
申请号：US17495444
申请日：2021-10-06
Applicant: MAKITA CORPORATION
Inventor： Koki TERAMOTO , Ryo SUNAZUKA , Tomoyuki KUTSUNA , Susumu KATO , Tomonobu NASHIMOTO , Toshihiro TOMITA
Abstract: A handcart may include: a front wheel; a rear wheel; a support frame supporting the front wheel and the rear wheel; a receptacle pivotable relative to the support frame; a load sensor configured to detect a load applied to the rear wheel; and a control unit. When the load detected by the load sensor is less than or equal to a predetermined load, the control unit may be configured to determine that the rear wheel is predicted to lift from a ground.
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