Patents by Inventor Donald J. Liska

Donald J. Liska 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).

  • Internally cooled linear accelerator and drift tubes
    Patent number: 6172463
    Abstract: A drift tube linear accelerator (DTL) incorporating an improved drift tube design, wherein the DTL comprises a resonance chamber maintaining a vacuum and having an inlet port and an exit port, an RF field source producing an oscillating radio frequency field within the chamber, and a plurality of substantially cylindrical drift tubes comprising a hollow body having a low energy end and a high energy end and housing a magnet, a low energy end cap attached to the low energy end of the hollow body and a high energy end cap attached to the high energy end of the hollow body, and a stem extending from said hollow body to an inner surface of the resonance chamber.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: January 9, 2001
    Assignee: International Isotopes, Inc.
    Inventors: Roy Ira Cutler, Warner Heilbrunn, James Potter, Gan Li, Donald J. Liska
  • Drift tube suspension for high intensity linear accelerators
    Patent number: 4350921
    Abstract: The disclosure relates to a drift tube suspension for high intensity linear accelerators. The system comprises a series of box-sections girders independently adjustably mounted on a linear accelerator. A plurality of drift tube holding stems are individually adjustably mounted on each girder.
    Type: Grant
    Filed: March 11, 1980
    Date of Patent: September 21, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Donald J. Liska, Roger G. Schamaun, Donald C. Clark, R. Christopher Potter, Joseph A. Frank