Patents by Inventor Sigvard Junkrans

Sigvard Junkrans 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).

  • Nuclear fuel assembly
    Patent number: 4749547
    Abstract: A nuclear fuel assembly containing a plurality of vertical fuel rods and possibly occasional vertical water-filled rods, which are surrounded by a fuel channel of substantially square cross-section and which are divided, by means of a vertical channel for water of substantially cruciform cross-section, into four sub-bundles. Each fuel rod contains a stack of circular-cylindrical pellets of a nuclear fuel arranged in a cladding tube. Each sub-bundle consists of, in all, twenty-five rods arranged in a lattice containing 5.times.5 rods. The cladding tube of each fuel rod has a wall thickness in the range 0.50 to 0.70 mm and an external diameter in the range 8.5 to 10.3 mm.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: June 7, 1988
    Assignee: Aktiebolaget ASEA-ATOM
    Inventors: Jan Blomstrand, Sigvard Junkrans, Olov Nylund
  • Fuel assembly for a boiling water reactor
    Patent number: 4588550
    Abstract: Nuclear fuel assembly having four bundles of fuel rods, at least one fuel bundle being made with twenty symmetrically arranged fuel rod positions, the number of fuel rod positions in each of the remaining fuel rod bundles being at least sixteen and at most twenty-five.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: May 13, 1986
    Assignee: Aktiebolaget ASEA-ATOM
    Inventors: Jan Blomstrand, Anders Johansson, Sigvard Junkrans, Olov Nylund, Aart van Santen