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公开(公告)号：US11248620B2
公开(公告)日：2022-02-15
申请号：US16574664
申请日：2019-09-18
Applicant: TECHTRONIC CORDLESS GP
Inventor： Koon For Chung
Abstract: An electric blower (10) is disclosed as including a brushless motor (16), and an axial fan (18, 18C) driven by the motor, the motor being operable at a first speed of rotation of 15,000 revolutions per minute (rpm) and a second speed of rotation of 18,000 rpm, the axial fan including a hub (34C) and a plurality of fan blades (36C) engaged with the hub, the hub having a hub diameter (ϕH), the axial fan having an outer diameter (ϕT), and ϕ H ϕ T being between substantially 0.6 and substantially 0.65.
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公开(公告)号：US20200096001A1
公开(公告)日：2020-03-26
申请号：US16574664
申请日：2019-09-18
Applicant: TECHTRONIC CORDLESS GP
Inventor： Koon For Chung
Abstract: An electric blower (10) is disclosed as including a brushless motor (16), and an axial fan (18, 18C) driven by the motor, the motor being operable at a first speed of rotation of 15,000 revolutions per minute (rpm) and a second speed of rotation of 18,000 rpm, the axial fan including a hub (34C) and a plurality of fan blades (36C) engaged with the hub, the hub having a hub diameter (ϕH), the axial fan having an outer diameter (ϕT), and φ H φ T being between substantially 0.6 and substantially 0.65.
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公开(公告)号：US20230383580A1
公开(公告)日：2023-11-30
申请号：US18045775
申请日：2022-10-11
Applicant: TECHTRONIC CORDLESS GP
Inventor： Koon For Chung
Abstract: A peg driver for use with a peg has a base, a driver shaft, and a driver arm. The base is at least partially defined by a driver channel having an outlet and defines a channel axis. The driver shaft has a first end and a second end. The driver shaft defines a shaft channel open to the driver channel. The first end of the driver shaft is at least partially positioned within and moveable axially along the driver shaft between an at rest position and an actuated position. The driver arm is moveable with respect to the driver shaft between a retracted position and a deployed position. The driver arm is configured to move from the retracted position to the deployed position as the driver shaft moves from the rest position to the actuated position.
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公开(公告)号：US20230264313A1
公开(公告)日：2023-08-24
申请号：US17679186
申请日：2022-02-24
Applicant: TECHTRONIC CORDLESS GP
Inventor： Koon For Chung , Yan Jia WANG
Abstract: Disclosed in the present invention is a control system for a normally-on power tool. The power tool comprises a tool head and a power device for providing the tool head with power, and the control system comprises an acquisition circuit and a control circuit. The acquisition circuit is in electrical communication with the power device and used to acquire at least one parameter associated with the power device, and the control circuit is configured to put the power device in a working mode with a first output power or a standby mode with a second output power according to the at least one parameter. The control system according to one or more embodiments of the present invention can save energy consumption, reduce mechanical wear, increase the service life of the power tool, and enhance operation convenience and safety.
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公开(公告)号：US20220193691A1
公开(公告)日：2022-06-23
申请号：US17556843
申请日：2021-12-20
Applicant: TECHTRONIC CORDLESS GP
Inventor： Wai Chung Lee , Koon For Chung , Kun Hao Wu , Xiao Di Lan , Yan Jia Wang
Abstract: The present invention discloses a shredding device. The shredding device according to one or more embodiments of the present invention comprises: a shredding body for shredding materials; a frame for supporting the shredding body; and a power supply device that provides electric power to the shredding body. The shredding body comprises a housing, and the housing is provided with a power supply chamber for accommodating at least part of the power supply device. The shredding device according to the present invention features a compact structure, and is easy and safe to operate.
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Patent Agency Ranking
公开(公告)号：US20220143802A1
公开(公告)日：2022-05-12
申请号：US17523858
申请日：2021-11-10
Applicant: TECHTRONIC CORDLESS GP
Inventor： Yan Jia Wang , Wai Chung Lee , Zheng Jun Wang , Jin Cheng Li , Dong Wei Li , Zhi Yang Li , Koon For Chung
Abstract: The utility model discloses a long-rod-type electric tool, comprising: a handle assembly, the handle assembly comprising a power supply unit; a machine head assembly, the machine head assembly comprising a driving unit and an operating unit connected to the driving unit; a long rod assembly, the long rod assembly being arranged between the handle assembly and the machine head assembly; and at least one interface. The long-rod-type electric tool is configured to make an orientation of the operating unit relative to the long rod assembly adjustable in at least one degree of freedom by means of the at least one interface.
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公开(公告)号：US20230358101A1
公开(公告)日：2023-11-09
申请号：US17777424
申请日：2020-10-15
Applicant: Techtronic Cordless GP
Inventor： Koon For Chung , Hui Jian Chen , Xiao Di Lan , Yan Jia Wang , Jonathan Robert Feldkamp , Shuai Shao , Grzegorz Kondro , Richard Michael Mcentyre , Gregory Scott Torrisi , John Eugene McCallum
CPC classification number: E21B10/44 , B28D1/14 , E21B11/005 , B23B2226/75 , B23B2260/096 , B23B2260/122 , B23B2260/128
Abstract: Provided herein is an electric powered digging apparatus comprising: a powerhead, the power head comprises a motor and a gearbox; a handle frame, the powerhead is mounted onto the handle frame; and a drill bit, the drill bit is driven by the motor to rotate around a longitudinal axis, the electric power digging apparatus further comprises: a first safety mechanism, wherein the first safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal axis for an angle larger than a first threshold, and a second safety mechanism, wherein the second safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal drive axis at an angular speed larger than a second threshold FIG. 1
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公开(公告)号：US20220330481A1
公开(公告)日：2022-10-20
申请号：US17722515
申请日：2022-04-18
Applicant: TECHTRONIC CORDLESS GP
Inventor： Lawrence Fung Pok Lo , Koon For Chung
IPC: A01D34/90
Abstract: The present utility model discloses a hybrid grass cutting apparatus, comprising a strimmer assembly, the strimmer assembly comprising a cutting head assembly located at an end remote from a handle and connected via a connecting rod, the cutting head assembly comprising a cutting tool and a guard located close to the cutting tool. The hybrid grass cutting apparatus further comprises a grass cutter frame, the grass cutter frame having an opening which accommodates the guard and through which the cutting tool can pass; and an engagement feature is provided between the grass cutter frame and the guard, enabling a user to engage the strimmer assembly with the grass cutter frame or remove the strimmer assembly from the grass cutter frame without any need to use an additional tool.
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公开(公告)号：US20220307518A1
公开(公告)日：2022-09-29
申请号：US17695239
申请日：2022-03-15
Applicant: TECHTRONIC CORDLESS GP
Inventor： Koon For Chung , Yan Jia Wang
Abstract: Disclosed in the present invention is an electric tool, comprising: a housing, comprising a first opening; working equipment; a power apparatus, at least partially located in the housing and driving the working equipment; a surrounding structure, at least partially surrounding the power apparatus, the surrounding structure defining a second opening; and a blocking structure located between the first opening and the second opening.
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公开(公告)号：US20220193692A1
公开(公告)日：2022-06-23
申请号：US17556798
申请日：2021-12-20
Applicant: TECHTRONIC CORDLESS GP
Inventor： Wai Chung Lee , Koon For Chung , Kun Hao Wu , Xiao Di Lan
Abstract: The present invention discloses a shredding mechanism, a shredding device and a control system and method thereof. The shredding mechanism comprises a shredding component and an adjusting component, wherein the shredding component is used to shred materials, the adjusting component and the shredding component define an operation space for shredding operation, and the adjusting component and the shredding component are configured to be able to move relative to each other so as to change the size of the operation space. The present invention also discloses a shredding device and a control system and method thereof. The shredding mechanism and device according to the present invention feature improved safety, convenience and service life.
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