Patents by Inventor Hunk LIU

Hunk LIU 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).

  • Compact outer-rotor brushless motor for a power tool
    Patent number: 12719329
    Abstract: A motor is provided including a motor housing, an end cap secured to an open end of the motor housing, a stator, a rotor shaft, a rotor mounted on the rotor shaft; and a positional sensor circuit board including position sensors in magnetic interface with the rotor. The end cap includes a radial body having a center pocket arranged to securely support a bearing of the rotor shaft, and a molded structure formed through at least a portion of the radial body. The molded structure includes: a first portion formed to axially constrain the bearing within the center pocket on one side of the radial body, and a second portion forming a support structure projecting from another side of the radial body to structurally support the positional sensor circuit board relative to the rotor.
    Type: Grant
    Filed: December 12, 2023
    Date of Patent: August 25, 2026
    Assignee: BLACK & DECKER INC.
    Inventors: Yuming Zhou, Tong Zheng, Hunk Liu, Paik Gu, Timothy W. French
  • COMPACT OUTER-ROTOR BRUSHLESS MOTOR FOR A POWER TOOL
    Publication number: 20240223042
    Abstract: A motor is provided including a motor housing, an end cap secured to an open end of the motor housing, a stator, a rotor shaft, a rotor mounted on the rotor shaft; and a positional sensor circuit board including position sensors in magnetic interface with the rotor. The end cap includes a radial body having a center pocket arranged to securely support a bearing of the rotor shaft, and a molded structure formed through at least a portion of the radial body. The molded structure includes: a first portion formed to axially constrain the bearing within the center pocket on one side of the radial body, and a second portion forming a support structure projecting from another side of the radial body to structurally support the positional sensor circuit board relative to the rotor.
    Type: Application
    Filed: December 12, 2023
    Publication date: July 4, 2024
    Applicant: Black & Decker Inc.
    Inventors: Yuming ZHOU, Tong ZHENG, Hunk LIU, Paik GU, Timothy W. FRENCH