Patents by Inventor James Legge

James Legge 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).

  • Customized and varying cross-section electrodes
    Patent number: 9630268
    Abstract: Erosion electrodes and associated devices, systems, and methods for providing improved performance during a process driven by FEED and facilitated by fluid flushing of a worksite is disclosed. Use of erosion electrodes having varying cross-sectional geometries result in customizable channels, within which the FEED process may proceed, improving efficiency and efficacy of the process as the erosion electrode is advanced longitudinally into a workpiece.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: April 25, 2017
    Assignee: Perfect Point EDM Corp.
    Inventors: Mervyn Rudgley, James Legge
  • Advanced flushing for workpiece erosion
    Patent number: 8278584
    Abstract: The hand-held electro-discharge device to remove boluses of material from a workpiece. In some implementations a conductive electrode and its supporting ground pin are immersed in a dielectric fluid contained in a hood or cavity near or at the electrode's distal tip an removably sealed to a conductive workpiece. A flushing inlet and outlet in fluid communication with said hood provide a flushing fluid, which may also be a dielectric fluid to remove FOD and cool.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: October 2, 2012
    Inventors: Kenneth Gold, Mervyn Rudgley, James Legge, Michael Gibbons, Richard Gerlach
  • SPARK GAP CONTROL FOR ELECTRO-DISCHARGE MACHINING
    Publication number: 20120217225
    Abstract: A control module for an EDM device, comprises: controls for managing power supplied to the EDM device, taking voltage measurements, calculating responses, and controlling advancement of an electrode of the EDM device. The EDM device may include a piezoelectric crystal that electrically in parallel with the voltage applied to a spark gap between the electrode and a workpiece.
    Type: Application
    Filed: October 21, 2010
    Publication date: August 30, 2012
    Inventors: Mervyn Rudgley, Kenneth Gold, Michael Gibbons, James Legge, Richard Gerlach