Patents by Inventor Zbigniew Piec

Zbigniew Piec 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).

  • Homopolar machine with brush improvement
    Publication number: 20060279163
    Abstract: The wear life of flexible copper fiber brushes when used at a positive pole in a direct current motor or generator is improved by the provision of an effective amount of zinc as a sacrificial anode material. Flame-sprayed zinc is applied as a coating to the exterior surface of such a copper fiber pack to bond the fibers with a surrounding metal wire reinforcing wrap, of cross wound copper wire or fine mesh, woven copper wire screen material, and create an improved brush.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 14, 2006
    Applicant: General Atomics
    Inventors: Alan Langhorn, Zbigniew Piec
  • HOMOPOLAR MACHINE WITH IMPROVED BRUSH LIFETIME
    Publication number: 20050077795
    Abstract: A homopolar machine which exhibits reduced wear and prolonged brush life. Current collectors or brushes are mounted so as to maintain substantially constant contact pressure and so that all of them are polarized negative. Brush holders are provided which facilitate the application of precise and constant contact pressure in a region of very high magnetic forces.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 14, 2005
    Inventors: Zbigniew Piec, Alan Langhorn, David Hazlebeck