Patents by Inventor Nicholas B. Rohrdanz

Nicholas B. Rohrdanz 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).

  • Methods and apparatus for welding work pieces having dissimilar compositions
    Patent number: 11465226
    Abstract: The example methods and apparatus reduce and/or eliminate adverse effects of welding work pieces having dissimilar compositions. An example method includes depositing a first weld layer on a first end of a first work piece. The first work piece has a first content of a metallic element and the first weld layer has a second content of the metallic element higher than the first content. The example method includes depositing a second weld layer between the first weld layer and a second end of a second work piece to couple the first work piece to the second work piece. The second weld layer has a third content of the metallic element higher than the second content, and the second work piece has a fourth content of the metallic element higher than the first content.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: October 11, 2022
    Assignee: Fisher Controls International LLC
    Inventors: Donald R. Bush, Nicholas B. Rohrdanz
  • Methods and apparatus for welding work pieces having dissimilar compositions
    Patent number: 10500672
    Abstract: The example methods and apparatus reduce and/or eliminate adverse effects of welding work pieces having dissimilar compositions. An example method includes depositing a first weld layer on a first end of a first work piece. The first work piece has a first content of a metallic element and the first weld layer has a second content of the metallic element higher than the first content. The example method includes depositing a second weld layer between the first weld layer and a second end of a second work piece to couple the first work piece to the second work piece. The second weld layer has a third content of the metallic element higher than the second content, and the second work piece has a fourth content of the metallic element higher than the first content.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: December 10, 2019
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Donald R. Bush, Nicholas B. Rohrdanz
  • METHODS AND APPARATUS FOR WELDING WORK PIECES HAVING DISSIMILAR COMPOSITIONS
    Publication number: 20190275604
    Abstract: The example methods and apparatus reduce and/or eliminate adverse effects of welding work pieces having dissimilar compositions. An example method includes depositing a first weld layer on a first end of a first work piece. The first work piece has a first content of a metallic element and the first weld layer has a second content of the metallic element higher than the first content. The example method includes depositing a second weld layer between the first weld layer and a second end of a second work piece to couple the first work piece to the second work piece. The second weld layer has a third content of the metallic element higher than the second content, and the second work piece has a fourth content of the metallic element higher than the first content.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 12, 2019
    Inventors: Donald R. Bush, Nicholas B. Rohrdanz
  • METHODS AND APPARATUS FOR WELDING WORK PIECES HAVING DISSIMILAR COMPOSITIONS
    Publication number: 20160221106
    Abstract: The example methods and apparatus reduce and/or eliminate adverse effects of welding work pieces having dissimilar compositions. An example method includes depositing a first weld layer on a first end of a first work piece. The first work piece has a first content of a metallic element and the first weld layer has a second content of the metallic element higher than the first content. The example method includes depositing a second weld layer between the first weld layer and a second end of a second work piece to couple the first work piece to the second work piece. The second weld layer has a third content of the metallic element higher than the second content, and the second work piece has a fourth content of the metallic element higher than the first content.
    Type: Application
    Filed: October 28, 2015
    Publication date: August 4, 2016
    Inventors: Donald R. Bush, Nicholas B. Rohrdanz