Patents by Inventor John S. Hurst

John S. Hurst 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).

  • Publication number: 20140197144
    Abstract: In a method and system for slitting thin strip magnetic steel such as transformer core material, a laser is mounted above the material and the material is wound from a pay-out reel to one or more take-up reels.
    Type: Application
    Filed: January 14, 2013
    Publication date: July 17, 2014
    Inventors: Keith D. Earhart, John S. Hurst
  • Publication number: 20140111297
    Abstract: In a transformer core and transformer, a wound transformer core is formed from magnetic steel strips that are wound into multiple rings of different widths and arranged to define a ring-like structure having a stepped, substantially circular cross-section without any cuts or gaps in the magnetic path, or the core is wound from one or more tapered strips that are wound to define a cross-section that is circular, oval, egg-shaped, or square-shaped with truncated corners.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 24, 2014
    Inventors: Keith D. Earhart, John S. Hurst
  • Patent number: 4072084
    Abstract: Machine tools utilized in precision machine operations require tool support structures which exhibit minimal deflection, thermal expansion and vibration characteristics. The tool support structure of the present invention is a graphite fiber reinforced composite in which layers of the graphite fibers or yarn are disposed in a 0/90.degree. pattern and bonded together with an epoxy resin. The finished composite possesses a low coefficient of thermal expansion and a substantially greater elastic modulus, stiffness-to-weight ratio, and damping factor than a conventional steel tool support utilized in similar machining operations.
    Type: Grant
    Filed: December 17, 1976
    Date of Patent: February 7, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Charles E. Knight, Jr., Louis Kovach, John S. Hurst