Patents by Inventor Walker L. Pierce, Jr.

Walker L. Pierce, Jr. 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).

  • Composite wear-resistant alloy, and tools from same
    Patent number: 4113920
    Abstract: Spheroidal particles of wear-resistant alloy comprising boron, chromium and iron having maximum hardness for a given composition are produced by the rapid cooling of a molten alloy mixture. The resultant solid particles are then incorporated into a composite alloy wherein the solid particles are held together with a matrix of different material from the alloy. Inserts of the composite wear-resistant alloy are useful in producing long wearing tools.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: September 12, 1978
    Assignee: Caterpillar Tractor Co.
    Inventors: Eugene L. Helton, Preston L. Gale, Lowell J. Moen, Robert C. Mueller, Walker L. Pierce, Jr., Henry J. Vermillion, Jr.
  • Composite wear-resistant alloy, and tools from same
    Patent number: 4011051
    Abstract: Spheroidal particles of wear-resistant alloy comprising boron, chromium and iron having maximum hardness for a given composition are produced by the rapid cooling of a molten alloy mixture. The resultant solid particles are then incorporated into a composite alloy wherein the solid particles are held together with a matrix of different material from the alloy. Inserts of the composite wear-resistant alloy are useful in producing long wearing tools.
    Type: Grant
    Filed: May 2, 1974
    Date of Patent: March 8, 1977
    Assignee: Caterpillar Tractor Co.
    Inventors: Eugene L. Helton, Preston L. Gale, Lowell J. Moen, Robert C. Mueller, Walker L. Pierce, Jr., Henry J. Vermillion, Jr.