Patents by Inventor Edwin A. Crombie

Edwin A. Crombie 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).

  • Precipitation hardenable high temperature shape memory alloy
    Patent number: 7749341
    Abstract: A composition of the invention is a high temperature shape memory alloy having high work output, and is made from (Ni+Pt+Y)xTi(100-x), wherein x is present in a total amount of 49-55 atomic %, Pt is present in a total amount of 10-30 atomic %, Y is one or more of Au, Pd, and Cu and is present in a total amount of 0 to 10 atomic %. The alloy has a matrix phase wherein the total concentration of Ni, Pt, and the one or more of Pd, Au, and Cu is greater than 50 atomic %.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 6, 2010
    Assignee: The United States of America as represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Ronald Dean Noebe, Susan L. Draper, Michael V. Nathal, Edwin A. Crombie
  • Precipitation hardenable high temperature shape memory alloy
    Publication number: 20070204938
    Abstract: A composition of the invention is a high temperature shape memory alloy having high work output, and is made from (Ni+Pt+Y)xTi(100-x), wherein x is present in a total amount of 49-55 atomic %, Pt is present in a total amount of 10-30 atomic %, Y is one or more of Au, Pd, and Cu and is present in a total amount of 0 to 10 atomic %. The alloy has a matrix phase wherein the total concentration of Ni, Pt, and the one or more of Pd, Au, and Cu is greater than 50 atomic %.
    Type: Application
    Filed: March 6, 2006
    Publication date: September 6, 2007
    Inventors: Ronald Noebe, Susan Draper, Michael Nathal, Edwin Crombie
  • Method of selective grain growth in nickel-base superalloys by controlled boron diffusion
    Patent number: 4401480
    Abstract: This is a method for producing a composite grain structure in nickel-base superalloy articles by causing a controlled amount of grain growth in selected regions. The method uses alloys containing 0.01-1.0 carbon and 0.02-0.08 boron and a heat treatment in a non-reducing atmosphere after the alloy has been formed. The heat treatment causes diffusion of boron (but not carbon) in selected regions, lowering the amount of boron and causing controlled grain growth in these regions.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: August 30, 1983
    Assignee: Westinghouse Electric Corp.
    Inventor: Edwin A. Crombie, III