Patents by Inventor Michael Stephen Walker

Michael Stephen Walker 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 and apparatus to trigger superconductors in current limiting devices
    Patent number: 6809910
    Abstract: A method and apparatus for magnetically triggering a superconductor in a superconducting fault current limiter to transition from a superconducting state to a resistive state. The triggering is achieved by employing current-carrying trigger coil or foil on either or both the inner diameter and outer diameter of a superconductor. The current-carrying coil or foil generates a magnetic field with sufficient strength and the superconductor is disposed within essentially uniform magnetic field region. For superconductor in a tubular-configured form, an additional magnetic field can be generated by placing current-carrying wire or foil inside the tube and along the center axial line.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: October 26, 2004
    Assignee: SuperPower, Inc.
    Inventors: Xing Yuan, Drew Willard Hazelton, Michael Stephen Walker