Patents by Inventor Andy Ji

Andy Ji 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).

  • FLUSHING AND FILTERING SYSTEM FOR ELECTROEROSION MACHINING
    Publication number: 20050218089
    Abstract: A flushing and filtering system for an electroerosion machine includes a work tank configured to maintain a workpiece therein, a first filtering stage for roughly filtering residue-containing machining liquid exiting from the work tank, and a second filtering stage for finely filtering roughly-filtered machining liquid exiting from the first filtering stage.
    Type: Application
    Filed: March 30, 2004
    Publication date: October 6, 2005
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Bin Wei, Michael Lamphere, Renwei Yuan, Andy Ji
  • Out flushing guide bushing
    Patent number: 6897400
    Abstract: A guide bushing for use in association with electrical discharge machining (EDM) apparatus including a rotatable electrode defining a longitudinal axis, is provided. The guide bushing includes a body portion defining a bore therethrough for receiving at least a portion of the electrode therein. The bore includes a proximal portion sized to be in contact with an outer surface of the electrode, an intermediate portion sized to be spaced from the electrode, and a distal portion sized to be at least partially in contact with the outer surface of the electrode.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: May 24, 2005
    Assignee: General Electric Company
    Inventors: Renwei Yuan, Michael Scott Lamphere, Bin Wei, Andy Ji