Patents by Inventor Eugene W. Bartel

Eugene W. Bartel 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 discharge scribing for improving core loss of grain-oriented silicon steel
    Patent number: 4931613
    Abstract: A method and apparatus are provided for domain refinement of texture annealed and insulation coated grain-oriented silicon steel strip by contacting the insulated steel surface to be scribed with a discharge electrode, providing a high voltage-low current and low voltage-high current to the electrode, moving the electrode across the steel while essentially maintaining contact therewith, and marking the steel with a plurality of indentations generally aligned across the steel surface by pulsing the high current to produce a plurality of electrical discharges.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: June 5, 1990
    Assignee: Allegheny Ludlum Corporation
    Inventors: James A. Salsgiver, Eugene W. Bartel, Rowland C. Rudolf, III
  • Capacitive electrical discharge scribing for improving core loss of grain-oriented silicon steel
    Patent number: 4780155
    Abstract: A method and apparatus are provided for domain refinement of texture annealed and insulation coated grain-oriented silicon steel strip by contacting the insulated steel surface to be scribed with a discharge electrode, moving the electrode substantially transverse to the rolling directioln while essentially maintaining contact, and marking the steel with a plurality of electrical discharge craters generally aligned across the steel by producing a plurality of electrical discharges between the electrode and steel from a capacitor of 0.001-10.0 microfarads.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: October 25, 1988
    Assignee: Allegheny Ludlum Corporation
    Inventors: James A. Salsgiver, Eugene W. Bartel, Rowland C. Rudolf, III
  • Electrical discharge scribing for improving core loss of grain-oriented silicon steel
    Patent number: 4767469
    Abstract: A method and apparatus are provided for domain refinement of texture annealed and insulation coated grain-oriented silicon steel strip by contacting the insulated steel surface to be scribed with a discharge electrode, providing a high voltage-low current and low voltage-high current to the electrode, moving the electrode across the steel while essentially maintaining contact therewith, and marking the steel with a plurality of indentations generally aligned across the steel surface by pulsing the high current to produce a plurality of electrical discharges.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: August 30, 1988
    Assignee: Allegheny Ludlum Corporation
    Inventors: James A. Salsgiver, Eugene W. Bartel, Rowland C. Rudolf, III