Patents by Inventor Erwin Wenti Liang

Erwin Wenti Liang 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).

  • Patent number: 7351304
    Abstract: A removal assembly and method for removing a submaster from a master is described. A curved tooling surface is arranged within a housing of the assembly. A first array of vacuum cups is attached to the housing adjacent a first end of the curved tooling surface, where the first array of vacuum cups are configured to provide a vacuum grip on a first portion of the submaster. A second array of vacuum cups is attached to the housing adjacent a second end of the curved tooling surface, where the second end opposes the first end, the second array of vacuum cups is configured to provide a vacuum grip on a second portion of the submaster. A rotation mechanism is configured to rotationally support the master as the master is rolled along the curved tooling surface to remove the submaster.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: April 1, 2008
    Assignee: General Electric Company
    Inventors: Erwin Wenti Liang, Harland Lynn Hayden, Dennis Michael Jacobs, Dennis Joseph Coyle, Alvin Un-Teh Chen, Donald Bruce Sorensen, Richard Robert Edwards
  • Patent number: 7272463
    Abstract: A method of determining a tool geometry and tool orientation for any prescribed path along a workpiece of a cutting tool is described. A parameter set is provided, where parameters of the parameter set include tool geometry and tool orientation relative to a surface of the workpiece. Values of the parameters in the parameter set are determined such that no local interference or global interference occurs, where local interference occurs when a portion of the tool immediately adjacent a cutting edge of the tool contacts a sidewall of a groove already cut by the cutting edge, and global interference occurs when a portion of the tool away from the cutting edge contacts a sidewall of a groove already cut by the cutting edge.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: September 18, 2007
    Assignee: General Electric Company
    Inventors: Erwin Wenti Liang, Vinod Padmanabhan Kumar
  • Patent number: 7203569
    Abstract: There is provided a machining tool for machining a workpiece on a workpiece support in response to control signals. The machining tool includes a cutting tool configured to cut a surface of the workpiece. The machining tool also includes a first displacement mechanism and a second displacement mechanism. The first displacement mechanism arranged to displace the cutting tool relative to the workpiece in a first set of coordinates in response to the control signals. The second displacement mechanism supported by the first translation mechanism and arranged to displace the cutting tool relative to the workpiece in a second set of coordinates, the second displacement mechanism capable of a higher frequency response than the first displacement mechanism. The machining tool also includes a controller configured to receive the control signals and synchronize the displacement of the cutting tool due to the first displacement mechanism with the displacement of the cutting tool due to the second displacement mechanism.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: April 10, 2007
    Assignee: General Electric Company
    Inventors: Erwin Wenti Liang, Eugene George Olczak, Joseph Lucian Smolenski, Teeporn Paul Tanpitukpongse, Eric Redito Robrigado