Patents by Inventor John E. Swanson

John E. Swanson 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).

  • Seal means
    Patent number: 4453722
    Abstract: For a twin spool gas turbine engine that utilizes a carbon seal. A bellows is supported to bias the carbon seal against its seal plate and a back-up seal consisting of a piston ring is located in the balance diameter of the carbon seal to maintain its loading in the event the bellows fail.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: June 12, 1984
    Assignee: United Technologies Corporation
    Inventor: John E. Swanson