Patents by Inventor David B. Smathers

David B. Smathers 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).

  • Process for making filamentary superconductors using tin-magnesium eutectics
    Patent number: 5098798
    Abstract: A method is disclosed for fabricating a wire from niobium tin produced in situ in a filamentous structure capable of achieving the superconducting state which comprises overlapping a tin alloy core comprised of tin-magnesium eutectic alloy with alternating layers of copper and foraminous layers followed by drawing the thus-formed niobium filaments into wire, then heating the wire at sufficiently high temperature to cause the eutectic alloy to homogeneously diffuse through the length of the copper wire and rods to react with the Nb, forming the A-15 crystal structure of Nb.sub.3 Sn, characterized by refined grain structure therein and improved current carrying capability.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: March 24, 1992
    Assignee: Teledyne Industries, Inc.
    Inventor: David B. Smathers
  • Process for making filamentary superconductors using tin-magnesium eutectics
    Patent number: 4973527
    Abstract: A method is disclosed for fabricating a wire from niobium tin produced in situ in a filamentous structure capable of achieving the superconducting state which comprises overlapping a tin alloy core comprised of tin-magnesium eutectic alloy with alternating layers of copper and foraminous layers followed by drawing the thus-formed niobium filaments into wire, then heating the wire at sufficiently high temperature to cause the eutectic alloy to homogeneously diffuse through the length of the copper wire and rods to react with the Nb, forming the A-15 crystal structure of Nb.sub.3 Sn, characterized by refined grain structure therein and improved current carrying capability.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: November 27, 1990
    Assignee: Teledyne Industries, Inc.
    Inventor: David B. Smathers