Patents by Inventor Ho Quang DANH

Ho Quang DANH 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).

  • Motor and drive apparatus having a conductive bearing
    Patent number: 12266995
    Abstract: A motor housing includes a bearing holder that holds a first bearing and accommodates a rotor and a stator. A second bearing is disposed inside a motor shaft at one axial end portion of the motor shaft and has lower electric resistance than the first bearing. The conductive member electrically connects the second bearing to a motor housing. The radially outer end portion of the second bearing is in contact with the inner peripheral surface of the motor shaft. The contact portion of the conductive member is in contact with the radially inner end portion of the second bearing. The fixed portion is fixed to the motor housing radially outward of the motor shaft. A bridge portion connects the contact portion and the fixed portion.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: April 1, 2025
    Assignee: NIDEC CORPORATION
    Inventors: Ho Quang Danh, Kenichiro Hamagishi, Takahiro Uetani
  • MOTOR AND DRIVE APPARATUS
    Publication number: 20230093962
    Abstract: A motor housing includes a bearing holder that holds a first bearing and accommodates a rotor and a stator. A second bearing is disposed inside a motor shaft at one axial end portion of the motor shaft and has lower electric resistance than the first bearing. The conductive member electrically connects the second bearing to a motor housing. The radially outer end portion of the second bearing is in contact with the inner peripheral surface of the motor shaft. The contact portion of the conductive member is in contact with the radially inner end portion of the second bearing. The fixed portion is fixed to the motor housing radially outward of the motor shaft. A bridge portion connects the contact portion and the fixed portion.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 30, 2023
    Inventors: Ho Quang DANH, Kenichiro HAMAGISHI, Takahiro UETANI