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公开(公告)号：US11901850B2
公开(公告)日：2024-02-13
申请号：US17126372
申请日：2020-12-18
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： David Rose , Daniel J. Tomcheck , Vincent M. Zornow
Abstract: Systems and methods for braking a power tool using a stamped brake resistor. The power tool includes a motor, a trigger configured to be actuated, and a brake switch coupled to the motor. A brake resistor assembly is selectively coupled to the motor via the brake switch and includes a stamped brake resistor. The stamped brake resistor includes a terminal portion and a resistive portion. The resistive portion includes a planar serpentine path. A controller including an electronic processor and a memory is coupled to the trigger, the motor, and the brake switch, and is configured to control power delivered to the motor based on a position of the trigger, determine to brake the motor during operation of the motor, and activate, in response to determining to brake the motor, the brake switch to connect the stamped brake resistor to the motor.
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公开(公告)号：US20220285968A1
公开(公告)日：2022-09-08
申请号：US17729397
申请日：2022-04-26
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Gareth Mueckl , Jeremy R. Ebner , Tauhira Hoossainy , David Rose
IPC: H02J7/14
Abstract: One embodiment provides an electrical circuit coupled to an alternator. The electrical circuit includes a rotor and stator coils. The electrical circuit is configured to receive, at a point when an engine is operating, an electrical current that is induced in the stator coils by rotation of the rotor and charge a battery pack with the electrical current and inhibit generation of a spark by the engine while the alternator is powered by the battery pack until a speed of the alternator is greater than a threshold. The electrical circuit is further configured to power the alternator, at a point when the engine is not operating, with electrical current supplied by the battery pack coupled to a battery connector to start the engine.
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公开(公告)号：US20210229140A1
公开(公告)日：2021-07-29
申请号：US17053004
申请日：2020-09-21
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： David Rose , Christopher J. Turner
Abstract: A drain cleaning machine includes a brushless direct current (DC) motor configured to rotate a snake about the snake axis. An electronic processor is configured to control power switching elements to drive the brushless DC motor. In a first operating range when a load experienced by the brushless DC motor is less than or equal to a predetermined load, the electronic processor is configured to control the power switching elements to drive the brushless DC motor at an approximately constant speed regardless of the load experienced by the brushless DC motor. In a second operating range when the load experienced by the brushless DC motor is greater than the predetermined load, the electronic processor is configured to control the power switching elements to drive the brushless DC motor at a decreasing speed as the load experienced by the brushless DC motor increases.
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Patent Agency Ranking
公开(公告)号：US20160297319A1
公开(公告)日：2016-10-13
申请号：US15093397
申请日：2016-04-07
Applicant: Milwaukee Electric Tool Corporation
Inventor： Gareth Mueckl , Jeremy R. Ebner , Tauhira Hoossainy , David Rose
IPC: B60L11/18
CPC classification number: H02J7/1492 , H02J7/1415
Abstract: System and method for a portable propane-fueled battery charger. One system includes a battery charger including a propane fuel line and an engine including an output shaft. The engine is configured to receive propane via the propane fuel line and rotationally drive the output shaft. The battery charger further includes an alternator including a rotor and stator coils. The output shaft is mechanically coupled to the rotor, and the rotor is rotationally driven by the output shaft. An electrical current is induced in the stator coils by rotation of the rotor. The battery charger further includes an electrical circuit that receives the electrical current and is configured to determine when a battery pack is coupled to a battery connector, and charge the battery pack.
Abstract translation: 便携式丙烷燃料电池充电器的系统和方法。 一个系统包括包括丙烷燃料管线的电池充电器和包括输出轴的发动机。 发动机构造成通过丙烷燃料管线接收丙烷并旋转地驱动输出轴。 电池充电器还包括包括转子和定子线圈的交流发电机。 输出轴机械地联接到转子，并且转子由输出轴旋转驱动。 通过转子旋转在定子线圈中感应出电流。 电池充电器还包括接收电流并被配置为确定电池组何时耦合到电池连接器并且为电池组充电的电路。
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公开(公告)号：US20160243631A1
公开(公告)日：2016-08-25
申请号：US15053733
申请日：2016-02-25
Applicant: Milwaukee Electric Tool Corporation
Inventor： Mike Brewster , Taylor Crabb , Josh Adams , Steven Cunningham , David Rose , Daryl S. Richards , Jeffrey S. Holly , Brian Wattenbach , Scott R. Fischer
CPC classification number: B23D45/048 , B23D47/02 , B23D47/025 , B23D59/003 , B27B5/29 , B27G19/02
Abstract: A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a saw arm, a brushless motor supported by the saw arm, and power electronics positioned outside the motor for supplying power to the motor. The power electronics are coupled to a structural component of the miter saw to utilize the entire mass of the structural component as a heat sink to dissipate heat generated by the power electronics.
Abstract translation: 斜切锯包括基座组件和可枢转地联接到基座组件的锯单元。 锯单元包括锯臂，由锯臂支撑的无刷电动机和位于马达外部的电力电子器件，用于向马达供电。 功率电子器件耦合到斜切锯的结构部件，以利用结构部件的整个质量作为散热器来散发由电力电子器件产生的热量。
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公开(公告)号：US10882123B2
公开(公告)日：2021-01-05
申请号：US15053733
申请日：2016-02-25
Applicant: Milwaukee Electric Tool Corporation
Inventor： Mike Brewster , Taylor Crabb , Josh Adams , Steven Cunningham , David Rose , Daryl S. Richards , Jeffrey S. Holly , John W. Thiele
Abstract: A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a saw arm, a brushless motor supported by the saw arm, and power electronics positioned outside the motor for supplying power to the motor. The power electronics are coupled to a structural component of the miter saw to utilize the entire mass of the structural component as a heat sink to dissipate heat generated by the power electronics.
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公开(公告)号：US20200303942A1
公开(公告)日：2020-09-24
申请号：US16897750
申请日：2020-06-10
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Gareth Mueckl , Jeremy R. Ebner , Tauhira Hoossainy , David Rose
IPC: H02J7/14
Abstract: One embodiment provides an electrical circuit coupled to an alternator. The electrical circuit includes a rotor and stator coils. The electrical circuit is configured to receive, at a point when an engine is operating, an electrical current that is induced in the stator coils by rotation of the rotor and charge a battery pack with the electrical current and inhibit generation of a spark by the engine while the alternator is powered by the battery pack until a speed of the alternator is greater than a threshold. The electrical circuit is further configured to power the alternator, at a point when the engine is not operating, with electrical current supplied by the battery pack coupled to a battery connector to start the engine.
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公开(公告)号：US10720792B2
公开(公告)日：2020-07-21
申请号：US15970405
申请日：2018-05-03
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Gareth Mueckl , Jeremy R. Ebner , Tauhira Hoossainy , David Rose
IPC: H02J7/14
Abstract: System and method for a portable propane-fueled battery charger. One system includes a battery charger including a propane fuel line and an engine including an output shaft. The engine is configured to receive propane via the propane fuel line and rotationally drive the output shaft. The battery charger further includes an alternator including a rotor and stator coils. The output shaft is mechanically coupled to the rotor, and the rotor is rotationally driven by the output shaft. An electrical current is induced in the stator coils by rotation of the rotor. The battery charger further includes an electrical circuit that receives the electrical current and is configured to determine when a battery pack is coupled to a battery connector, and charge the battery pack.
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