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公开(公告)号：US20170259452A1
公开(公告)日：2017-09-14
申请号：US15450180
申请日：2017-03-06
Applicant: MAKITA CORPORATION
Inventor： Hideki KACHI , Koji HANEDA
CPC classification number: B27B17/02 , B25F5/008 , B25F5/02 , B27B17/00 , B27B17/0033
Abstract: Disclosed is a chainsaw capable of introducing outside air into a body casing by rotation of a cooling fan to adequately cool a control unit provided inside the body casing. The chainsaw is configured to cool a control unit provided inside a body casing by a cooling fan being rotated under driving of an electric motor, wherein a handle comprises a base portion through which the handle (30) is attached to the body casing, and a grip formed to extend from the base portion in such a manner as to be grippable by a worker; and an air inlet is formed in a counter wall of the body casing opposed to the base portion of the handle, and wherein the base portion is attached to the counter wall of the body casing to cover the air inlet in an air introduceable state.
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公开(公告)号：US20170203462A1
公开(公告)日：2017-07-20
申请号：US15328364
申请日：2015-07-08
Applicant: MAKITA CORPORATION
Inventor： Koji HANEDA , Hideki KACHI , Yasuyuki KAWABATA
CPC classification number: B27B17/08 , B27B17/00 , B27B17/0008 , B27B17/02
Abstract: To provide an easy-to-use electric chainsaw that uses, in place of a large battery pack with a high voltage rating that would have been used in conventional electric chainsaws, a battery power source composed of a set of small commonly used battery packs of the same rating. An electric chainsaw having a built-in electric motor that is powered by a rechargeable battery, wherein a set of commonly used battery packs of the same rating is used as the rechargeable battery. The set of battery packs is mounted at the back of the main housing so that the center of gravity (G) of the chainsaw is positioned within a range (R) of 1.5 time the width (W) of the grip section of a rear handle between the left and right sides of a center line that is centered in the horizontal direction.
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公开(公告)号：US20250081895A1
公开(公告)日：2025-03-13
申请号：US18829539
申请日：2024-09-10
Applicant: MAKITA CORPORATION
Inventor： Koji HANEDA , Kazuya KATO , Tomoya KUNISHIMA
Abstract: A working machine system may include a working machine, a working machine holder, and a detection mechanism configured to detect whether the working machine is held by the working machine holder. The working machine may be configured to be switched between a first state and a second state in which a predetermined switching manipulation is required to switch to the first state. When the detection mechanism detects that the working machine is not held, the working machine may switch from the first state to the second state in response to the working machine being unattended for a first predetermined time period. When the detection mechanism detects that the working machine is held, the working machine may switch from the first state to the second state in response to the working machine being unattended for a second predetermined time period which is longer than the first predetermined time period.
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Patent Agency Ranking
公开(公告)号：US20190381687A1
公开(公告)日：2019-12-19
申请号：US16522722
申请日：2019-07-26
Applicant: MAKITA CORPORATION
Inventor： Koji HANEDA , Hideki KACHI , Yasuyuki KAWABATA
Abstract: To provide an easy-to-use electric chainsaw that uses, in place of a large battery pack with a high voltage rating that would have been used in conventional electric chainsaws, a battery power source composed of a set of small commonly used battery packs of the same rating. An electric chainsaw having a built-in electric motor that is powered by a rechargeable battery, wherein a set of commonly used battery packs of the same rating is used as the rechargeable battery. The set of battery packs is mounted at the back of the main housing so that the center of gravity (G) of the chainsaw is positioned within a range (R) of 1.5 time the width (W) of the grip section of a rear handle between the left and right sides of a center line that is centered in the horizontal direction.
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公开(公告)号：US20170297216A1
公开(公告)日：2017-10-19
申请号：US15513656
申请日：2015-10-01
Applicant: MAKITA CORPORATION
Inventor： Hideki KACHI , Yasuyuki KAWABATA , Koji HANEDA
CPC classification number: B27B17/08 , B23D59/001 , B25F5/02 , B27B17/00 , B27B17/0008 , B27B17/02
Abstract: An electric chainsaw comprises: a first handle having a forwardly and rearwardly extending grip portion provided on a rear or upper portion of a housing housing an electric motor and configured to be gripped by one hand of a worker, the grip portion being provided with a trigger switch for activating the electric motor; a second handle having a laterally extending grip portion provided forward of the grip portion of the first handle and configured to be gripped by the other hand of the worker; an indicator lamp for indicating a remaining charge amount of a battery pack; and a push-button type indicator switch for causing the indicator lamp to indicate the remaining charge amount, wherein the indicator switch is provided at a position where the worker can operate the indicator switch by a finger of the other hand being gripping the grip portion of the second handle.
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公开(公告)号：US20150375416A1
公开(公告)日：2015-12-31
申请号：US14765141
申请日：2014-01-31
Applicant: MAKITA CORPORATION
Inventor： Koji HANEDA , Jiro ODA , Hideaki SUGIURA , Daisuke SUZUKI
CPC classification number: B27B17/02 , B25F5/02 , B27B17/00 , B27B17/0008
Abstract: A chainsaw includes a body housing, an elongated guide bar projecting forward from the body housing, a saw-chain mounted on the periphery of the guide bar for rotation, an electric motor mounted within the body housing for rotating, and a top handle provided on an upper portion of the body housing above the guide bar and extending in a fore-and-aft direction. A plurality of rechargeable battery packs is mounted on the body housing as a source of power supply for the electric motor. The battery packs are mounted to the body housing in such a manner that a center of gravity of the chainsaw observed from the back side is positioned in a two times extent of lateral width of a gripe portion of the top handle at both sides of a vertical centerline of the gripe portion.
Abstract translation: 电锯包括主体壳体，从主体壳体向前突出的细长导杆，安装在导杆周围的用于旋转的锯链，安装在主体壳体内用于旋转的电动马达和设置在主体壳体上的顶部手柄 主体壳体的上部在引导杆上方并且在前后方向上延伸。 多个可再充电电池组被安装在主体外壳上作为用于电动机的电源。 电池组以这样的方式安装到主体外壳，使得从后侧观察到的电锯的重心定位在顶部手柄的夹持部分的横向宽度的两倍程度的两侧，垂直方向 抓地部分的中心线。
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公开(公告)号：US20180200917A1
公开(公告)日：2018-07-19
申请号：US15742565
申请日：2016-07-07
Applicant: MAKITA CORPORATION
Inventor： Hideki KACHI , Koji HANEDA , Tsunahisa NAKAMURA
Abstract: A chainsaw includes a handle with a handgrip; an electric motor for endlessly moving a saw chain; a control unit for controlling rotation of the motor; and a main power switch switchable between an ON state and an OFF state. The handgrip is provided with a gripping detection device for detecting whether the handgrip is gripped by the worker, and the chainsaw is configured to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is gripped, maintain the main power switch in the ON state, and to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is not gripped, switch the main power switch to the OFF state.
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公开(公告)号：US20170259359A1
公开(公告)日：2017-09-14
申请号：US15450091
申请日：2017-03-06
Applicant: MAKITA CORPORATION
Inventor： Hideki KACHI , Koji HANEDA , Masaki SAKURAGI
IPC: B23D57/02
CPC classification number: B23D57/023 , B27B17/0033
Abstract: Disclosed is a chainsaw capable of making it less likely that vibrations due to driving of an electric motor and a endless movement of a saw chain are transmitted to a worker, thereby enabling the worker to become less likely to be fatigued even in work using the chainsaw. The chainsaw includes an electric motor provided inside a body casing; a guide bar provided in a front portion of the body casing in such a manner as to protrude forwardly; a saw chain provided around an outer periphery of the guide bar in an endlessly movable manner, and configured to be endlessly moved along the outer periphery of the guide bar under driving of the electric motor; a handle section provided with respect to the body casing, and configured to be gripped by a worker; and an anti-vibration member interposed between the body casing and the handle section.
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