Patents by Inventor Milton Sigelmann

Milton Sigelmann 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).

  • Method for attaching a nut element to a metal structure
    Patent number: 7516534
    Abstract: A method of installing fastening elements, and rivetless fasteners for use with the method. Rivetless nutplate fasteners are installed in metal structures by providing flush fit barrel shaped plug or bushing portions in a hole in the structure as defined by an edge wall. The barrel portion is acted upon axially, and expanded radially outward toward the edge wall of the hole, to provide an interference fit. The ends of the barrel portion are machined as desired for flushness. Also, a hole is installed as necessary. Rivetless nutplates are easily installed, and the installation enhances fatigue life of the hole surrounding the barrel of the nutplate.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: April 14, 2009
    Assignee: Stresswave, Inc.
    Inventors: Eric T. Easterbrook, Milton Sigelmann, Michael Landy, Taeksun Nam
  • Method for installation of nut plates, plugs, and bushings, and enhanced fatigue life metal structures resulting therefrom
    Publication number: 20030118419
    Abstract: A method of installing fastening elements, and rivetless fasteners for use with the method. Rivetless nutplate fasteners are installed in metal structures by providing flush fit barrel shaped plug or bushing portions in a hole in the structure as defined by an edge wall. The barrel portion is acted upon axially, and expanded radially outward toward the edge wall of the hole, to provide an interference fit. The ends of the barrel portion are machined as desired for flushness. Also, a hole is installed as necessary. Rivetless nutplates are easily installed, and the installation enhances fatigue life of the hole surrounding the barrel of the nutplate.
    Type: Application
    Filed: November 25, 2002
    Publication date: June 26, 2003
    Applicant: STRESSWAVE, INC.
    Inventors: Eric T. Easterbrook, Milton Sigelmann, Michael Landy, Taeksun Nam