Patents by Inventor John G. Pistolis

John G. Pistolis 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).

  • Apparatus and methods for adjusting the weight of a velocity limiter for a control rod of a nuclear reactor
    Publication number: 20020122527
    Abstract: The control rod includes an upper absorber section and a lower velocity limiter comprised of a socket, a vane, a transition piece and a set of fins. To adjust the weight of the control rod, lighter and heavier sets of fins, as well as lighter and heavier transition pieces are provided. By suitable selection of the lighter and heavier sets of fins and the lighter and heavier transition pieces, the weight of the velocity limiter can be selectively adjusted in accordance with the weights of differently designed sections to obtain a predetermined control rod weight. Additionally, the heavier transition piece may have material removed therefrom to decrease its weight to provide an infinite adjustment of weight within a predetermined range of weights for the velocity limiter.
    Type: Application
    Filed: April 23, 2002
    Publication date: September 5, 2002
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Thomas F. Carter, James E. Holden, Richard E. Kingston, Gary S. Martin, John G. Pistolis, James F. McLeod, Michael J. Sullivan
  • Apparatus and method for adjusting the weight of a velocity limiter for a control rod of a nuclear reactor
    Patent number: 6396893
    Abstract: The control rod includes an upper absorber section and a lower velocity limiter comprised of a socket, a vane, a transition piece and a set of fins. To adjust the weight of the control rod, lighter and heavier sets of fins, as well as lighter and heavier transition pieces are provided. By suitable selection of the lighter and heavier sets of fins and the lighter and heavier transition pieces, the weight of the velocity limiter can be selectively adjusted in accordance with the weights of differently designed sections to obtain a predetermined control rod weight. Additionally, the heavier transition piece may have material removed therefrom to decrease its weight to provide an infinite adjustment of weight within a predetermined range of weights for the velocity limiter.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: May 28, 2002
    Assignee: General Electric Company
    Inventors: Thomas F. Carter, James E. Holden, Richard E. Kingston, Gary S. Martin, John G. Pistolis, James F. McLeod, Michael J. Sullivan