Patents by Inventor Jon Hagstrom

Jon Hagstrom 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).

  • Flanged connection for pressure vessel
    Patent number: 4240561
    Abstract: An improved joint for removably attaching first and second members together. The first member has a circular opening and a circular wall surrounding the opening and projecting axially outwardly from the opening. A double curved second member with a circular periphery has an annular flange with an inner surface surrounding the first member wall. Transmittal of radial forces from the second member annular flange to the first member wall is effected by contact of the walls with each other or by a spacer between and in contact with the walls. Removably securing the first and second members together is effected by shear studs or other securing devices.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: December 23, 1980
    Assignee: Chicago Bridge & Iron Company
    Inventors: Jon Hagstrom, Thomas J. Ahl, James S. Vasilion