Patents by Inventor James T. Legge

James T. 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).

  • METHOD OF SEPERATING FASTENER SHANKS FROM HEADS OR FRAMES
    Publication number: 20150102015
    Abstract: A device and method for removal of fasteners by Electro-discharge Machining (EDM) such that portions of the fastener, such as a flange, may be separated from other portions of the fastener, such as a shank.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 16, 2015
    Inventors: James T. Legge, Mervyn Rudgley
  • Method of separating fastener shanks from heads or frames
    Patent number: 8963040
    Abstract: A device and method for removal of fasteners by Electro-discharge Machining (EDM) such that portions of the fastener, such as a flange, may be separated from other portions of the fastener, such as a shank.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: February 24, 2015
    Assignee: Perfect Point EDM Corporation
    Inventors: James T. Legge, Mervyn Rudgley
  • CUSTOMIZED AND VARYING CROSS-SECTION ELECTRODES
    Publication number: 20140175064
    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 work-piece.
    Type: Application
    Filed: January 12, 2012
    Publication date: June 26, 2014
    Inventors: Mervyn Rudgley, James T. Legge
  • Hand-held electro-discharge device
    Patent number: 8178814
    Abstract: The hand-held electro-discharge machining fastener removal device of this invention brings an EDM electrode and its supporting ground pin and dielectric fluid structure to a fastener in a workpiece, such as an aircraft fuselage. The hand-held device brings the dielectric fluid, power supply, and control system structure to the fastener in a compact tool to permit EDM machining to be brought to large structures.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: May 15, 2012
    Assignee: Perfect Point EDM Corp.
    Inventors: Kenneth Gold, Mervyn Rudgley, Michael Gibbons, James T. Legge, Richard K. Gerlach
  • SELECTIVE EROSION FORMING LIGAMENTS
    Publication number: 20110266258
    Abstract: A device and method for removal of fasteners by Electro-discharge Machining (EDM) such that portions of the fastener, such as a flange, may be separated from other portions of the fastener, such as a shank.
    Type: Application
    Filed: April 25, 2011
    Publication date: November 3, 2011
    Inventors: James T. Legge, Mervyn Rudgley
  • Advanced flushing for workpiece erosion
    Publication number: 20110114605
    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: Application
    Filed: January 13, 2011
    Publication date: May 19, 2011
    Inventors: Kenneth Stewart Gold, Mervyn Rudgley, Michael Gibbons, James T. Legge, Richard K. Gerlach
  • HAND-HELD ELECTRO-DISCHARGE DEVICE
    Publication number: 20100096365
    Abstract: The hand-held electro-discharge machining fastener removal device of this invention brings an EDM electrode and its supporting ground pin and dielectric fluid structure to a fastener in a workpiece, such as an aircraft fuselage. The hand-held device brings the dielectric fluid, power supply, and control system structure to the fastener in a compact tool to permit EDM machining to be brought to large structures.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 22, 2010
    Inventors: Kenneth Stewart Gold, Mervyn Rudgley, Michael Gibbons, James T. Legge, Richard K. Gerlach