Patents by Inventor Richard Gamwell

Richard Gamwell 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).

  • Jointing of pipes
    Patent number: 4269437
    Abstract: A joint for jointing the ends of two pipes, particularly lined pipes, in which a radial resilient portion extends between the two ends of the pipes, two oppositely extending axial portions at the radial inner part of the radial portion each engage within the interior of one of the two pipe ends. Construction of the joint is such that the axially extending portions of the joint are urged radially outwardly against the inner surface of the two pipe ends as the two pipe ends are drawn axially towards one another.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: May 26, 1981
    Assignee: E. T. Oakes Limited
    Inventors: Douglas W. Shaw, Richard Gamwell