Patents by Inventor James D. Kahl

James D. Kahl 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: 5769922
    Abstract: Vanadium-aluminum master alloys with small amounts of refractory metals such as ruthenium, are made substantially free of refractory inclusions and with a substantially homogeneous microstructure by reacting vanadium oxides with excess aluminum through an aluminothermic reduction reaction in the presence of the refractory to yield the desired master alloy. A preferred homogeneous vanadium-aluminum-ruthenium alloy without inclusions contains from about 59 to 70% of vanadium, about 29 to 40% of aluminum, and about 1 to 10% of ruthenium, all based on the weight of the alloy. The substantially homogeneous and inclusion-free master alloy is then used to produce titanium base alloys of higher quality, such as 4% vanadium and 6% aluminum titanium base alloys containing small amounts of refractory metals, usually containing from about 0.1 to 1.0% of ruthenium.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: June 23, 1998
    Assignee: Reading Alloys, Inc.
    Inventors: Brian J. Higgins, James D. Kahl, deceased, James D. Kahl, Jr., legal representative, Teri Ann Boyer, legal representative, Jeni L. Heenley, legal representative
  • Patent number: 4464151
    Abstract: A chain link assembly comprising a pair of inner sidebar portions, each of the inner sidebar portions defining an aperture. A tubular-shaped bushing is secured to the pair of inner sidebar portions. The bushing includes a central portion and integral bushing extensions at each end of the central portion. The central portion of the bushing extends between the inner sidebar portions and into the apertures, and the bushing extensions project beyond the inner sidebar portions. The inside diameter of the bushing at any point along the bushing extensions is larger than the smallest inside diameter of the central portion.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: August 7, 1984
    Assignee: Rexnord Inc.
    Inventor: James D. Kahl