Patents by Inventor Yuemei Min

Yuemei Min has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12673404
    Abstract: A fastener driver includes a battery pack; a striking assembly including a striking member configured to strike a fastener; a drive assembly including at least a drive wheel configured to drive the striking member to move along a central axis of the striking member; an electric motor configured to drive the drive wheel to rotate; and a control circuit configured to control the electric motor to operate, start, or stop. A striking frequency of the striking member is greater than 6 fasteners/second.
    Type: Grant
    Filed: August 19, 2025
    Date of Patent: July 7, 2026
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Guang Li, Jie Jiang, Ran Lan, Yuemei Min, Yongkang Wu
  • Patent number: 12643205
    Abstract: An impact tool includes a first cover mounted at an end of a first housing facing away from an output mechanism, where a first bearing seat is formed on or connected to the inner side surface of the first cover; a display mechanism including a human-computer interaction assembly and a retaining assembly, where the retaining assembly is used for supporting the human-computer interaction assembly, the retaining assembly is disposed on the outer side of the first cover, the human-computer interaction assembly sets and displays an operation parameter, and the operation parameter includes the rotational speed of a motor and an impact time parameter; and a control mechanism driving the motor according to the set operation parameter so that an output shaft outputs the preset tightening torque.
    Type: Grant
    Filed: October 6, 2023
    Date of Patent: June 2, 2026
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Guiping Zou, Longxiang Liu, Shuai Chen, Hongtao Ke, Yongkang Wu, Yuemei Min
  • Patent number: 12629807
    Abstract: A nail gun includes a housing; an electric motor disposed in the housing; a firing assembly configured to be capable of moving from an initial position to a firing position to drive a nail into a workpiece and moving from the firing position to the initial position within a nailing cycle; a parameter detection unit connected to at least the electric motor and configured to detect at least the number of revolutions of the electric motor; and a controller connected to at least the parameter detection unit. The controller is configured to, when the number of revolutions is greater than or equal to a first revolution number threshold and less than a second revolution number threshold, control the electric motor to operate at a constant rotational speed.
    Type: Grant
    Filed: April 24, 2025
    Date of Patent: May 19, 2026
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Guang Li, Xiaobo Yu, Yongkang Wu, Yuemei Min, Longxiang Liu, Tianxiao Xu, Qi Du, Guangcheng Sun
  • Publication number: 20260131441
    Abstract: A nail gun includes: a housing; an electric motor disposed in the housing; a firing assembly configured to be capable of moving from an initial position to a firing position to drive a nail into a workpiece and moving from the firing position to the initial position within a nailing cycle; a trigger switch disposed on the housing and configured to be operated upon an intention to drive the firing assembly; a push rod switch configured to be turned on when the push rod switch is pressed against the workpiece along the nailing direction; and a controller that is capable of at least acquiring a startup signal and controlling the electric motor to run. The controller is configured to, when the startup signal is detected within a current nailing cycle, at least control the electric motor to continue running until a nail is driven within a next nailing cycle.
    Type: Application
    Filed: January 8, 2026
    Publication date: May 14, 2026
    Inventors: Xiaobo Yu, Guangcheng Sun, Guang Li, Tianxiao Xu, Yongkang Wu, Yuemei Min, Longxiang Liu, Qi Du
  • Publication number: 20260102890
    Abstract: A nail gun includes a housing; an electric motor disposed in the housing; a battery pack configured to power the electric motor; a firing assembly configured to be capable of moving from an initial position to a firing position to drive a nail into a workpiece and moving from the firing position to the initial position within a nailing cycle; a parameter detection unit connected to at least the electric motor and configured to detect at least a working parameter of the electric motor; and a controller connected to at least the parameter detection unit. The controller is configured to, if the working parameter of the electric motor in a startup process is less than or equal to a parameter threshold, restrict a maximum duty cycle of a startup control signal to being less than or equal to a duty cycle threshold.
    Type: Application
    Filed: December 8, 2025
    Publication date: April 16, 2026
    Inventors: Guang Li, Xiaobo Yu, Yongkang Wu, Yuemei Min, Longxiang Liu, Tianxiao Xu, Qi Du, Guangcheng Sun
  • Publication number: 20260077464
    Abstract: A fastener driver includes a battery pack; a striking assembly including a striking member configured to strike a fastener; a drive assembly including at least a drive wheel configured to drive the striking member to move along a central axis of the striking member; an electric motor configured to drive the drive wheel to rotate; and a control circuit configured to control the electric motor to operate, start, or stop. A striking frequency of the striking member is greater than 6 fasteners/second.
    Type: Application
    Filed: August 19, 2025
    Publication date: March 19, 2026
    Inventors: Guang Li, Jie Jiang, Ran Lan, Yuemei Min, Yongkang Wu
  • Patent number: 12521859
    Abstract: A nail gun includes a housing; an electric motor disposed in the housing; a battery pack configured to power the electric motor; a firing assembly configured to be capable of moving from an initial position to a firing position to drive a nail into a workpiece and moving from the firing position to the initial position within a nailing cycle; a parameter detection unit connected to at least the electric motor and configured to detect at least a working parameter of the electric motor; and a controller connected to at least the parameter detection unit. The controller is configured to, if the working parameter of the electric motor in a startup process is less than or equal to a parameter threshold, restrict a maximum duty cycle of a startup control signal to being less than or equal to a duty cycle threshold.
    Type: Grant
    Filed: April 28, 2025
    Date of Patent: January 13, 2026
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Guang Li, Xiaobo Yu, Yongkang Wu, Yuemei Min, Longxiang Liu, Tianxiao Xu, Qi Du, Guangcheng Sun
  • Publication number: 20250269510
    Abstract: A power tool includes an electric motor; a power supply management device; a driving device driving the electric motor to operate to implement a main function; and an operating device being operated to activate one or more functions and output a function signal. The power tool has the main function and an auxiliary function, and the function signal includes a main function signal and an auxiliary function signal. The power supply management device is configured to output a first enable signal when receiving any function signal and output a third enable signal to the driving device when receiving the main function signal. The power tool further includes a first controller configured to output a first drive signal to the driving device when receiving the first enable signal. The driving device drives the electric motor to operate when receiving the third enable signal and the first drive signal.
    Type: Application
    Filed: May 13, 2025
    Publication date: August 28, 2025
    Inventors: Shutao Zheng, Shuang Li, Tianxiao Xu, Yuemei Min, Junya Duan
  • Publication number: 20250256382
    Abstract: A nail gun includes a housing; an electric motor disposed in the housing; a battery pack configured to power the electric motor; a firing assembly configured to be capable of moving from an initial position to a firing position to drive a nail into a workpiece and moving from the firing position to the initial position within a nailing cycle; a parameter detection unit connected to at least the electric motor and configured to detect at least a working parameter of the electric motor; and a controller connected to at least the parameter detection unit. The controller is configured to, if the working parameter of the electric motor in a startup process is less than or equal to a parameter threshold, restrict a maximum duty cycle of a startup control signal to being less than or equal to a duty cycle threshold.
    Type: Application
    Filed: April 28, 2025
    Publication date: August 14, 2025
    Inventors: Guang Li, Xiaobo Yu, Yongkang Wu, Yuemei Min, Longxiang Liu, Tianxiao Xu, Qi Du, Guangcheng Sun
  • Publication number: 20250249563
    Abstract: A nail gun includes a housing; an electric motor disposed in the housing; a firing assembly configured to be capable of moving from an initial position to a firing position to drive a nail into a workpiece and moving from the firing position to the initial position within a nailing cycle; a parameter detection unit connected to at least the electric motor and configured to detect at least the number of revolutions of the electric motor; and a controller connected to at least the parameter detection unit. The controller is configured to, when the number of revolutions is greater than or equal to a first revolution number threshold and less than a second revolution number threshold, control the electric motor to operate at a constant rotational speed.
    Type: Application
    Filed: April 24, 2025
    Publication date: August 7, 2025
    Inventors: Guang Li, Xiaobo Yu, Yongkang Wu, Yuemei Min, Longxiang Liu, Tianxiao Xu, Qi Du, Guangcheng Sun
  • Patent number: 12255499
    Abstract: A power tool includes a main body and a battery pack. The main body includes a housing and a motor, a switch assembly, and an electronic control device. The electronic control device is electrically connected to the switch assembly and the motor. The electronic control device includes an electronic control assembly, a mounting base, and a connecting assembly. The electronic control assembly includes a power circuit board. The power circuit board is provided with an opening. The connecting assembly conductively connects the battery pack to the electronic control assembly, connects to the mounting base via the opening, and mates with the mounting base to form a mounting space in which the electronic control assembly is mounted.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: March 18, 2025
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Huaishu Wang, Baoshan Li, Junya Duan, Jifeng Feng, Yanfeng Fan, Yuemei Min, Peng Teng, Qingsong Yang
  • Publication number: 20240157525
    Abstract: An impact tool includes a first cover mounted at an end of a first housing facing away from an output mechanism, where a first bearing seat is formed on or connected to the inner side surface of the first cover; a display mechanism including a human-computer interaction assembly and a retaining assembly, where the retaining assembly is used for supporting the human-computer interaction assembly, the retaining assembly is disposed on the outer side of the first cover, the human-computer interaction assembly sets and displays an operation parameter, and the operation parameter includes the rotational speed of a motor and an impact time parameter; and a control mechanism driving the motor according to the set operation parameter so that an output shaft outputs the preset tightening torque.
    Type: Application
    Filed: October 6, 2023
    Publication date: May 16, 2024
    Inventors: Guiping Zou, Longxiang Liu, Shuai Chen, Hongtao Ke, Yongkang Wu, Yuemei Min
  • Publication number: 20220271624
    Abstract: A power tool includes a main body and a battery pack. The main body includes a housing and a motor, a switch assembly, and an electronic control device. The electronic control device is electrically connected to the switch assembly and the motor. The electronic control device includes an electronic control assembly, a mounting base, and a connecting assembly. The electronic control assembly includes a power circuit board. The power circuit board is provided with an opening. The connecting assembly conductively connects the battery pack to the electronic control assembly, connects to the mounting base via the opening, and mates with the mounting base to form a mounting space in which the electronic control assembly is mounted.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Inventors: Huaishu Wang, Baoshan Li, Junya Duan, Jifeng Feng, Yanfeng Fan, Yuemei Min, Peng Teng, Qingsong Yang