Patents by Inventor PO-KAI DAI

PO-KAI DAI 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).

  • Control method of impact power tool
    Patent number: 11557991
    Abstract: A control method of an impact power tool includes: control a motor to rotate; continuously obtain a rotation speed signal based on a detecting result of a rotation speed detecting device and obtain a current signal based on a detecting result of a current detecting device; obtain a rotating time of each of rotation angles of the motor based on a variation of pulse waves of rotation speed signal and obtain the motor current based on the current signal; determine a number of impact that the impact mechanism produces based on a variation of the rotating time and a variation of the motor current; control the motor to stop rotating when the number of impact reaches a predetermined number. In this way, an output torque outputted by the impact power tool could be accurately controlled.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: January 17, 2023
    Assignee: MOBILETRON ELECTRONICS CO., LTD.
    Inventors: Po-Kai Dai, Wei-Jia Liou
  • CONTROL METHOD OF IMPACT POWER TOOL
    Publication number: 20220014128
    Abstract: A control method of an impact power tool includes: control a motor to rotate; continuously obtain a rotation speed signal based on a detecting result of a rotation speed detecting device and obtain a current signal based on a detecting result of a current detecting device; obtain a rotating time of each of rotation angles of the motor based on a variation of pulse waves of rotation speed signal and obtain the motor current based on the current signal; determine a number of impact that the impact mechanism produces based on a variation of the rotating time and a variation of the motor current; control the motor to stop rotating when the number of impact reaches a predetermined number. In this way, an output torque outputted by the impact power tool could be accurately controlled.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 13, 2022
    Applicant: MOBILETRON ELECTRONICS CO., LTD.
    Inventors: PO-KAI DAI, WEI-JIA LIOU