Patents by Inventor Alfred Henry Kraig

Alfred Henry Kraig 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).

  • Fan structure
    Patent number: 4012165
    Abstract: A fan structure which is particularly well suited for use in a high tip speed turbofan, gas turbine engine is disclosed. Various construction details accommodate both subsonic and supersonic flow across the fan blades. The system is built around compression shock wave phenomenon which are utilized to stably convert a portion of the dynamic energy of a supersonic stream to pressure energy within a subsonic stream.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: March 15, 1977
    Assignee: United Technologies Corporation
    Inventor: Alfred Henry Kraig