Patents by Inventor Sunmin Lu

Sunmin Lu 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).

  • Electrical safety receptacle with a cross-connection circuit
    Patent number: 7884292
    Abstract: An electrical safety receptacle with a cross-connection circuit, comprising: a line, a neutral and a ground wire input from an electrical power source, a line, a neutral and a ground wire output receptacles, four sets of fixed connection points, four sets of movable connection points, a first and a second cross-connection metal connectors, receptacle housing, a top cover, and a plurality of installation screws, when a line prong and a neutral prong of a power plug are not inserted into the line and neutral wire output receptacles, the line and neutral wire output receptacles are not electrically connected to the line wire and neutral wire of the electrical power source, and when the line prong and the neutral prong of the power plug are inserted into the line and neutral wire output receptacles, the line and neutral wire output receptacles are electrically connected to the line wire and neutral wire of the electrical power source.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: February 8, 2011
    Assignee: General Protecht Group, Inc.
    Inventors: Yulin Zhang, Chunhua Cheng, Sunmin Lu
  • ELECTRICAL SAFETY RECEPTACLE WITH A CROSS-CONNECTION CIRCUIT
    Publication number: 20100216326
    Abstract: An electrical safety receptacle with a cross-connection circuit, comprising: a line, a neutral and a ground wire input from an electrical power source, a line, a neutral and a ground wire output receptacles, four sets of fixed connection points, four sets of movable connection points, a first and a second cross-connection metal connectors, receptacle housing, a top cover, and a plurality of installation screws, when a line prong and a neutral prong of a power plug are not inserted into the line and neutral wire output receptacles, the line and neutral wire output receptacles are not electrically connected to the line wire and neutral wire of the electrical power source, and when the line prong and the neutral prong of the power plug are inserted into the line and neutral wire output receptacles, the line and neutral wire output receptacles are electrically connected to the line wire and neutral wire of the electrical power source.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 26, 2010
    Applicant: GENERAL PROTECHT GROUP, INC.
    Inventors: Yulin Zhang, Chunhua Cheng, Sunmin Lu