Patents by Inventor John G. Hogan

John G. Hogan 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).

  • Sealing means for rotary vessels
    Patent number: 4199155
    Abstract: In or for a large diameter rotary vessel having an end which projects into or through a stationary hood, a sealing arrangement comprising a wear ring surrounding the vessel, a sealing ring operatively associated with the wear ring, the sealing ring being mounted on a back-up ring surrounding the vessel and depending from the stationary hood, and means for applying constant pressure between the interfaces of the sealing ring and the wear ring.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: April 22, 1980
    Assignee: Head Wrightson & Company Limited
    Inventors: Allon C. Day, John G. Hogan