Patents by Inventor William D. Nielsen, Sr.

William D. Nielsen, Sr. 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: 6716292
    Abstract: An unwrought continuous cast Cu—Ni—Sn spinodal alloy and a method for producing the same is disclosed. The Cu—Ni—Sn spinodal alloy is characterized by an absence of discontinuous &ggr;′ phase precipitate at the grain boundaries, ductile fracture behavior during tensile testing, high strength, excellent wear and corrosion resistance, superior bearing properties, and contains from about 8-16 wt. % nickel, from about 5-8 wt. % tin, and a remainder copper.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: April 6, 2004
    Assignee: Castech, Inc.
    Inventors: William D. Nielsen, Jr., William D. Nielsen, Sr.
  • Publication number: 20020007879
    Abstract: An unwrought continuous cast Cu—Ni—Sn spinodal alloy and a method for producing the same is disclosed. The Cu—Ni—Sn spinodal alloy is characterized by an absence of discontinuous &ggr;′ phase precipitate at the grain boundaries, ductile fracture behavior during tensile testing, high strength, excellent wear and corrosion resistance, superior bearing properties, and contains from about 8-16 wt. % nickel, from about 5-8 wt. % tin, and a remainder copper.
    Type: Application
    Filed: November 3, 1995
    Publication date: January 24, 2002
    Inventors: WILIAM D. NIELSEN JR., WILLIAM D. NIELSEN SR.
  • Patent number: 5279353
    Abstract: Method and apparatus used for continuous casting of copper alloy rods and tubes for obtaining a fine grain size therein. Liquidus copper alloy material flows from a reservoir area or crucible into a continuous casting die through spaced apart feed slots disposed in the casting die cap, thereby effecting agitation of the liquidus material, which prevents the formation of thermal gradients large enough to produce gross directional solidification of the alloy at the liquid-solid state transition zone. The desired agitation is effected by altering the number, location, size and angle of the feed slots in accordance with formulas provided for that purpose.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: January 18, 1994
    Inventors: William D. Nielsen, Sr., Thomas D. Nielsen