Patents by Inventor Xinguo Chang

Xinguo Chang 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).

  • Tamper resistance receptacle
    Patent number: 11967784
    Abstract: A tamper resistant electrical receptacle comprises a housing including a cover having at least one plug outlet formed therethrough, the plug outlet configured to receive both line and neutral blades of an electrical plug. The electrical receptacle further comprises electrical contacts positioned within the housing below the at least one plug outlet, the electrical contacts being configured to be connect to AC power. A shutter disposed within the housing between the cover and the electrical contacts is slidable between a closed position blocking access to the electrical contacts through the plug outlet and an open position allowing access to the electrical contacts through the plug outlet, the shutter being biased toward the closed position. The shutter is configured to slide from the closed position to the open position only upon simultaneous insertion of both the line and neutral blades of the electrical plug in the plug outlet.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: April 23, 2024
    Assignee: THE WIREMOLD COMPANY
    Inventors: Yi Quan, Xinguo Chang
  • TAMPER RESISTANCE RECEPTACLE
    Publication number: 20230082696
    Abstract: A tamper resistant electrical receptacle comprises a housing including a cover having at least one plug outlet formed therethrough, the plug outlet configured to receive both line and neutral blades of an electrical plug. The electrical receptacle further comprises electrical contacts positioned within the housing below the at least one plug outlet, the electrical contacts being configured to be connect to AC power. A shutter disposed within the housing between the cover and the electrical contacts is slidable between a closed position blocking access to the electrical contacts through the plug outlet and an open position allowing access to the electrical contacts through the plug outlet, the shutter being biased toward the closed position. The shutter is configured to slide from the closed position to the open position only upon simultaneous insertion of both the line and neutral blades of the electrical plug in the plug outlet.
    Type: Application
    Filed: August 25, 2022
    Publication date: March 16, 2023
    Inventors: Yi Quan, Xinguo Chang
  • Tamper resistance receptacle
    Patent number: 11431122
    Abstract: A tamper resistant electrical receptacle comprises a housing including a cover having at least one plug outlet formed therethrough, the plug outlet configured to receive both line and neutral blades of an electrical plug. The electrical receptacle further comprises electrical contacts positioned within the housing below the at least one plug outlet, the electrical contacts being configured to be connect to AC power. A shutter disposed within the housing between the cover and the electrical contacts is slidable between a closed position blocking access to the electrical contacts through the plug outlet and an open position allowing access to the electrical contacts through the plug outlet, the shutter being biased toward the closed position. The shutter is configured to slide from the closed position to the open position only upon simultaneous insertion of both the line and neutral blades of the electrical plug in the plug outlet.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: August 30, 2022
    Assignee: THE WIREMOLD COMPANY
    Inventors: Yi Quan, Xinguo Chang
  • TAMPER RESISTANCE RECEPTACLE
    Publication number: 20220209454
    Abstract: A tamper resistant electrical receptacle comprises a housing including a cover having at least one plug outlet formed therethrough, the plug outlet configured to receive both line and neutral blades of an electrical plug. The electrical receptacle further comprises electrical contacts positioned within the housing below the at least one plug outlet, the electrical contacts being configured to be connect to AC power. A shutter disposed within the housing between the cover and the electrical contacts is slidable between a closed position blocking access to the electrical contacts through the plug outlet and an open position allowing access to the electrical contacts through the plug outlet, the shutter being biased toward the closed position. The shutter is configured to slide from the closed position to the open position only upon simultaneous insertion of both the line and neutral blades of the electrical plug in the plug outlet.
    Type: Application
    Filed: December 31, 2020
    Publication date: June 30, 2022
    Inventors: Yi Quan, Xinguo Chang