Patents by Inventor David Edward Crow

David Edward Crow 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).

  • Aerodynamic seal for a rotary machine
    Patent number: 3980411
    Abstract: A rotary machine, such as a gas turbine engine, capable of reliable operation with improved overall cycle efficiency is disclosed. Various construction details which aerodynamically isolate internal cavities of the machine from the flow path for the working medium gases are developed. A sealing system built around the use of free vortex phenomenon reduces the amount of air which must be flowed through the cavity to prevent ingestion of the working medium gases into the cavity.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: September 14, 1976
    Assignee: United Technologies Corporation
    Inventor: David Edward Crow