Patents by Inventor Timothy J. Hollis

Timothy J. Hollis 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 designing a shim coil to reduce field settling time
    Patent number: 7570141
    Abstract: A shim coil design technique determines a position and a geometry of a room temperature (RT) shim coil to provide both a desired field homogeneity and a desired B0 field setting time. The simultaneous satisfaction of both field homogeneity and field settling time is achieved without a reduction of flux leakage from the shim coil, modification of main magnet protection circuitry, and without necessarily decoupling of the shim coil from the overall main magnet.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: August 4, 2009
    Assignee: General Electric Company
    Inventors: Timothy J. Hollis, Timothy J. Havens, Tomas Duby
  • SYSTEM AND APPARATUS FOR LIMITING CURRENT IN A SUPERCONDUCTING COIL
    Publication number: 20090103217
    Abstract: A superconducting coil circuit for a superconducting magnet includes a superconducting coil and a current limiting apparatus. The current limiting apparatus is connected in series with the superconducting coil and includes a mechanical device configured to cause a quench in the superconducting coil when a current in the superconducting coil reaches a predetermined value.
    Type: Application
    Filed: October 17, 2007
    Publication date: April 23, 2009
    Applicant: General Electric Company
    Inventors: Anthony V. Langtry, Timothy J. Hollis