Patents by Inventor Sten Borell

Sten Borell 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 laser welding a nuclear fuel rod
    Patent number: 9586287
    Abstract: A method of welding a fuel rod includes the following steps. An end plug and a cladding tube of the fuel rod are brought together to abut each other, and welded by applying a laser beam directed to a welding zone to melt material of the end plug and the cladding tube. The welding is sensed by sensing radiation within a first wavelength range, which includes the wavelength of the laser beam coming from reflections from the welding zone, sensing radiation within a second wavelength range different from the first wavelength range, which includes infrared radiation from melted material, and sensing radiation within a third wavelength range different from the first and second wavelength ranges, which includes radiation from plasma. The welding and melting of material is monitored by monitoring the sensed radiations.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: March 7, 2017
    Assignee: Westinghouse Electric Sweden AB
    Inventors: Sten Borell, Tomas Rostvall
  • METHOD OF LASER WELDING A NUCLEAR FUEL ROD
    Publication number: 20140251960
    Abstract: A method of welding a fuel rod includes the following steps. An end plug and a cladding tube of the fuel rod are brought together to abut each other, and welded by applying a laser beam directed to a welding zone to melt material of the end plug and the cladding tube. The welding is sensed by sensing radiation within a first wavelength range, which includes the wavelength of the laser beam coming from reflections from the welding zone, sensing radiation within a second wavelength range different from the first wavelength range, which includes infrared radiation from melted material, and sensing radiation within a third wavelength range different from the first and second wavelength ranges, which includes radiation from plasma. The welding and melting of material is monitored by monitoring the sensed radiations.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 11, 2014
    Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB
    Inventors: Sten Borell, Tomas Rostvall
  • Method for production of and material adapted to be sintered to a nuclear fuel element with oxide base
    Patent number: 6669874
    Abstract: A method for production of a nuclear fuel element with oxide base, in which the nuclear fuel with oxide base is mixed with Cr and sintered to a solid body. The amount of chrome oxide added is =>50 and <100 ppm with respect to the amount of nuclear fuel with oxide base added.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: December 30, 2003
    Assignee: Westinghouse Atom AB
    Inventors: Philippe Abry, Sten Borell, Sven Eriksson