Patents by Inventor Larry A. Wallace

Larry A. Wallace 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).

  • Weldable nickel base cast alloy for high temperature applications and method
    Patent number: 4336312
    Abstract: The composition of a nickel base cast alloy for high temperature structural parts is modified by controlled reduction of the aluminum content and increasing the carbon content to significantly reduce the occurrence of base metal cracking in the heat-affected zone during fusion welding operations. The modified nickel base casting alloy is subjected to a pre-weld thermal conditioning in order to prevent strain age cracking of the weldments during post-weld thermal cycling operations.
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: June 22, 1982
    Assignee: The Garrett Corporation
    Inventors: Jeffrey J. Clark, Harry R. Fisk, Larry A. Wallace