Patents by Inventor Harold L. Nelson

Harold L. Nelson 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).

  • Patent number: 4675154
    Abstract: In a nuclear reactor fuel assembly, a relatively flexible mounting member for mounting a large coolant conducting tube to the lower tie plate whereby excessive side forces on the fuel rod spacers are avoided in the event of lateral displacement of the fuel assembly such as during a seismic event.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: June 23, 1987
    Assignee: General Electric Company
    Inventors: Harold L. Nelson, Thomas G. Dunlap, Eric B. Johansson, Bruce Matzner
  • Patent number: 4663118
    Abstract: A flow channel-to-nozzle attachment for a nuclear fuel assembly wherein the flow channel and nozzle are formed of material having different thermal coefficients of expansion, the attachment comprising tapered bars secured to the lower inner ends of the channel which bars are fitted into similarly tapered grooves in the adjacent outer surfaces of the nozzle, the angle of taper being selected such that the tapered bars move more or less deeply into the grooves in the nozzle with temperature changes without bending or stressing the lower end of the channel.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: May 5, 1987
    Assignee: General Electric Company
    Inventor: Harold L. Nelson
  • Patent number: 4420458
    Abstract: In a nuclear fuel assembly having a coolant conducting or water tube which also retains the spacers in axial position, the fuel rods experience greater axial growth with exposure than the water tube creating a risk that the water tube might become disengaged from the supporting tie plates. An arrangement for preventing such disengagement is described including lengthened end plug shanks for the water tube, a protective boss surrounding the lower end plug shank to protect it from flow induced vibration, a conical seat for the lower end plug and an arrangement for limiting upward movement of the water tube.
    Type: Grant
    Filed: April 29, 1981
    Date of Patent: December 13, 1983
    Assignee: General Electric Company
    Inventors: Thomas G. Dunlap, William G. Jameson, Jr., Carl R. Mefford, Harold L. Nelson, James E. Cearley